MF-SM050-2-99

## **Features** 

n Compliant with AEC-Q200 Rev-C- Stress n RoHS compliant* and halogen free** Test Qualification for Passive Components n Agency recognition: cWkus & in Automotive Applications n Patents pending ~~n Surface mount devices n~~ 

~~n Surface mount devices n Fully compatible with current industry standards~~ 

~~n Packaged per EIA 481-2 standard~~ 

## **MF-SM Series - PTC Resettable Fuses** 

## ~~**Electrical Characteristics**~~ 

|**Model**<br>~~ee~~|**V max.**<br>**Volts**<br>~~ee~~|**I max**<br>**Amps**<br>|**Ihold**|**Itrip**|**Resistance**|**Resistance**|**Max. Time**<br>**To Trip**|**Max. Time**<br>**To Trip**|**Tripped**<br>**Power**<br>**Dissipation**|
|---|---|---|---|---|---|---|---|---|---|
||||**Amperes**<br>**at 23 °C**||**Ohms**<br>**at 23 °C**||**Amperes**<br>**at 23 °C**|**Seconds**<br>**at 23 °C**|**Watts**<br>**at 23 °C**|
||||Hold<br>~~GGG~~<br>|Trip<br>~~GGG~~|R Min.<br>~~GGG~~|R1 Max.||Max.|Typ.|
|MF-SM030<br>~~ss~~<br>~~ee~~|60<br>~~ss~~<br>~~ee~~|40<br>~~ss~~<br>|0.30<br>~~ss~~<br>~~GGG~~<br>|0.60<br>~~ss~~<br>~~GGG~~|0.90<br>~~ss~~<br>~~GGG~~|4.80<br>~~ss~~|1.5<br>~~ss~~|3.0<br>~~ss~~|1.7<br>~~ss~~|
|MF-SM050<br>~~ee~~<br>~~Rs~~|60<br>~~ee~~<br>~~Rs~~|40<br>~~GG~~|0.50<br>~~GGG~~<br>~~GG~~<br>~~Ge~~|1.00<br>~~GGG~~<br>~~GO~~<br>~~GG~~|0.35<br>~~GGG~~<br>~~GO~~<br>~~GG~~|1.40<br>~~GO~~|2.5|4.0|1.7|
|MF-SM075<br>~~ee~~<br>~~ee~~<br>~~Rs~~|30<br>~~ee~~<br>~~ee~~<br>~~Rs~~<br>~~es~~|80<br>~~GG~~<br>~~ee~~<br>~~GG~~|0.75<br>~~GGG~~<br>~~GG~~<br>~~ee~~<br>~~Ge~~<br>~~GG~~|1.50<br>~~GGG~~<br>~~GO~~<br>~~ee~~<br>~~GG~~<br>~~GG~~|0.23<br>~~GGG~~<br>~~GO~~<br>~~ee~~<br>~~GG~~<br>~~GO~~|1.00<br>~~GO~~<br>~~ee~~<br>~~GO~~|8.0<br>~~ee~~|0.3<br>~~ee~~|1.7<br>~~ee~~|
|MF-SM075/60<br>~~Rs~~|60<br>~~Rs~~<br>~~es~~|10<br>~~GG~~|0.75<br>~~Ge~~<br>~~GG~~<br>~~Ge~~|1.50<br>~~GG~~<br>~~GG~~<br>~~GG~~|0.23<br>~~GG~~<br>~~GO~~<br>~~GG~~|1.00<br>~~GO~~|8.0|0.3|1.7|
|MF-SM100<br>~~Rs~~<br>~~es~~<br>~~Re~~|30<br>~~Rs~~<br>~~es ~~<br>~~es~~<br>~~Re~~|80<br> ~~GG~~<br>~~es~~<br>|1.10<br>~~Ge ~~<br>~~GG~~<br>~~es~~<br>~~Ge~~<br>~~GO~~<br>|2.20<br> ~~GG~~<br>~~GG ~~<br>~~es~~<br>~~GG~~<br>~~GO~~|0.12<br>~~GG~~<br> ~~GO~~<br>~~es~~<br>~~GG~~<br>~~GO~~|0.48<br>~~GO~~<br>~~es~~|8.0<br>~~es~~|0.5<br>~~es~~|1.7<br>~~es~~|
|MF-SM100/33<br>~~es~~<br>~~ss~~<br>~~Re~~|33<br>~~es~~<br>~~ss~~<br>~~Reee~~|40<br>~~es~~<br>~~ss~~<br>~~GG~~|1.10<br>~~es~~<br>~~Ge ~~<br>~~ss~~<br>~~GO~~<br>~~GG~~|2.20<br>~~es~~<br> ~~GG~~<br>~~ss~~<br>~~GO~~<br>~~GO~~|0.12<br>~~es~~<br>~~GG~~<br>~~ss~~<br>~~GO~~<br>~~GO~~|0.41<br>~~es~~<br>~~ss~~<br>~~GO~~|8.0<br>~~es~~<br>~~ss~~|0.5<br>~~es~~<br>~~ss~~|1.7<br>~~es~~<br>~~ss~~|
|MF-SM125<br>~~Re~~<br>~~Re~~|15<br>~~Reee~~<br>~~Re~~|100<br>~~GG~~<br>|1.25<br>~~GO~~<br>~~GG~~<br>~~Ge~~<br>|2.50<br>~~GO~~<br>~~GO~~<br>~~GG~~<br>|0.07<br>~~GO~~<br>~~GO~~<br>~~GG~~<br>|0.25<br>~~GO~~|8.0|2.0|1.7|
|MF-SM150<br>~~Re~~<br>~~es~~<br>~~Re~~|15<br>~~Reee~~<br>~~es~~<br>~~Re~~|100<br>~~GG~~<br>~~es~~<br>|1.50<br>~~GO~~<br>~~GG~~<br>~~es~~<br>~~Ge~~<br>|3.00<br>~~GO~~<br>~~GO~~<br>~~es~~<br>~~GG~~<br>|0.06<br>~~GO~~<br>~~GO~~<br>~~es~~<br>~~GG~~<br>|0.25<br>~~GO~~<br>~~es~~|8.0<br>~~es~~|5.0<br>~~es~~|1.9<br>~~es~~|
|MF-SM150/33<br>~~Re~~<br>~~Rs~~|33<br>~~Ress~~<br>~~Rs~~|40<br>~~ss~~|1.50<br>~~Ge~~<br>~~GG~~|3.00<br>~~GG~~<br>~~GG~~|0.06<br>~~GG~~<br>~~GG~~|0.23|8.0|5.0|1.9|
|MF-SM185/33<br>~~Re~~<br>~~Rs~~<br>~~se~~|33<br>~~Re ss~~<br>~~Rs~~<br>~~se~~|40<br>~~ss~~<br>~~Ge~~<br>|1.80<br>~~Ge ~~<br>~~GG~~<br>~~Ge~~<br>~~Ge~~<br>|3.60<br> ~~GG~~<br>~~GG~~<br>~~GG~~<br>~~GG~~|0.04<br>~~GG~~<br>~~GG~~<br>~~GG~~<br>~~GG~~|0.15|8.0|5.0|1.9|
|MF-SM200<br><br>~~Rs~~<br>~~ss~~<br>~~se~~|15<br> ~~ss~~<br>~~Rs~~<br>~~ss~~<br>~~se~~|100<br>~~ss~~<br>~~Ge~~<br>~~ss~~<br>|2.00<br>~~GG~~<br>~~Ge~~<br>~~ss~~<br>~~Ge~~<br>|4.00<br>~~GG~~<br>~~GG~~<br>~~ss~~<br>~~GG~~|0.045<br>~~GG~~<br>~~GG~~<br>~~ss~~<br>~~GG~~|0.125<br>~~ss~~|8.0<br>~~ss~~|12.0<br>~~ss~~|1.9<br>~~ss~~|
|MF-SM250<br>~~se~~<br>~~Rs~~|15<br>~~se~~<br>~~Rs~~|100<br>~~GG~~|2.50<br>~~Ge~~<br>~~GG~~<br>~~Ge~~|5.00<br>~~GG~~<br>~~GO~~<br>~~GG~~|0.024<br>~~GG~~<br>~~GO~~<br>~~GG~~|0.085<br>~~GO~~|8.0|25.0|1.9|
|MF-SM260<br>~~se~~<br>~~ss~~<br>~~Rs~~|6<br>~~se~~<br>~~ss~~<br>~~Rs~~|100<br>~~GG~~<br>~~ss~~|2.60<br>~~Ge ~~<br>~~GG~~<br>~~ss~~<br>~~Ge~~|5.20<br> ~~GG~~<br>~~GO~~<br>~~ss~~<br>~~GG~~|0.025<br>~~GG~~<br>~~GO~~<br>~~ss~~<br>~~GG~~|0.075<br>~~GO~~<br>~~ss~~|8.0<br>~~ss~~|20.0<br>~~ss~~|1.7<br>~~ss~~|
|MF-SM300<br>~~Rs~~|6<br>~~Rs~~<br>~~ss~~|100<br>~~ss~~|3.00<br>~~Ge~~<br>~~eG~~|6.00<br>~~GG~~<br>~~eG~~|0.015<br>~~GG~~<br>~~eG~~|0.048|8.0|35.0|1.5|



## ~~**Environmental Characteristics**~~ 

Operating Temperature ......................................... -40 °C to +85 °C Maximum Device Surface Temperature in Tripped State .................................................... 125 °C Passive Aging ....................................................... +85 °C, 1000 hours ............................................... ±5 % typical resistance change Humidity Aging...................................................... +85 °C, 85 % R.H. 7 days ..................................... ±5 % typical resistance change Thermal Shock ..................................................... MIL-STD-202F, Method 107G ............................... ±10 % typical resistance change .............................................................................. -40 °C to +85 °C, 20 cycles .................................. -20 % typical resistance change Vibration ............................................................... MIL-STD-883C, Method 2007.1, ........................... Rmin ≤ R ≤ R1max Condition A Moisture Sensitivity Level (MSL) .......................... Level 1 ESD Classification - HBM ..................................... Class 6 

## ~~**Test Procedures And Requirements For Model MF-SM Series**~~ 

|**Test**<br>**Test Conditions**<br>**Accept/Reject Criteria**|
|---|
|Visual/Mech. .....................................................Verify dimensions and materials .......................Per MF physical description|
|Resistance ........................................................In still air @ 23 °C .............................................Rmin≤R≤R1max<br>Time to Trip .......................................................At specified current, Vmax, 23 °C ....................T≤max. time to trip (seconds)<br>Hold Current .....................................................30 min. at Ihold .................................................No trip|
|Trip Cycle Life ...................................................Vmax, Imax, 100 cycles ...................................No arcing or burning|
|Trip Endurance .................................................Vmax, 48 hours ................................................No arcing or burning|
|Solderability ......................................................MIL-STD-202F, Method 208F ...........................95 % min. coverage|
|UL File Number ................................................E174545<br>http://www.ul.com/ Follow link to Online Certificates Directory, then enter UL File No.|



http://www.ul.com/ Follow link to Online Certificates Directory, then enter UL File No. E174545, or click here 

click here TÜV Certificate .................................................Certificate Number Available on Request, or 

A WARNING Cancer and Reproductive Harm ~~- www.P65Warnings.ca.gov~~ 

* RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011. 

**Bourns considers a product to be “halogen free” if (a) the Bromine (Br) content is 900 ppm or less; (b) the Chlorine (Cl) content is 900 ppm or less; and (c) the total Bromine (Br) and Chlorine (Cl) content is 1500 ppm or less. 

Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. 

The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. 

## **Applications** 

Almost anywhere there is a low voltage power supply and a load to be protected, including: n Computers & peripherals n General electronics n Automotive applications 

## **MF-SM Series - PTC Resettable Fuses** 

## ~~**Product Dimensions**~~ 

**==> picture [507 x 278] intentionally omitted <==**

**----- Start of picture text -----**<br>
Model               A  B  C                 D                 E                 F                 G  H<br>Min.  Max.  Max.  Max.  Min.  Max.  Min.  Max.  Min.  Max.  Min.  Max.  Min.<br>6.73  7.98  3.18  5.44  0.56  0.71  0.56  0.71  2.16  2.41  0.66  1.37  0.43<br>MF-SM030<br>(0.265) (0.314) (0.125) (0.214) (0.022) (0.028) (0.022) (0.028) (0.085) (0.095) (0.026) (0.054) (0.017)<br>6.73  7.98  3.18  5.44  0.56  0.71  0.56  0.71  2.16  2.41  0.66  1.37  0.43<br>MF-SM050<br>(0.265) (0.314) (0.125) (0.214) (0.022) (0.028) (0.022) (0.028) (0.085) (0.095) (0.026) (0.054) (0.017)<br>6.73  7.98  3.18  5.44  0.56  0.71  0.56  0.71  2.16  2.41  0.66  1.37  0.43<br>MF-SM075<br>(0.265) (0.314) (0.125) (0.214) (0.022) (0.028) (0.022) (0.028) (0.085) (0.095) (0.026) (0.054) (0.017)<br>6.73  7.98  3.18  5.44  0.56  0.71  0.56  0.71  2.16  2.41  0.66  1.37  0.43<br>MF-SM075/60<br>(0.265) (0.314) (0.125) (0.214) (0.022) (0.028) (0.022) (0.028) (0.085) (0.095) (0.026) (0.054) (0.017)<br>6.73  7.98  3.0  5.44  0.56  0.71  0.56  0.71  2.16  2.41  0.66  1.37  0.43<br>MF-SM100<br>(0.265) (0.314) (0.118) (0.214) (0.022) (0.028) (0.022) (0.028) (0.085) (0.095) (0.026) (0.054) (0.017)<br>6.73  7.98  3.0  5.44  0.56  0.71  0.56  0.71  2.16  2.41  0.66  1.37  0.43<br>MF-SM100/33<br>(0.265) (0.314) (0.118) (0.214) (0.022) (0.028) (0.022) (0.028) (0.085) (0.095) (0.026) (0.054) (0.017)<br>6.73  7.98  3.0  5.44  0.56  0.71  0.56  0.71  2.16  2.41  0.66  1.37  0.43<br>MF-SM125<br>(0.265) (0.314) (0.118) (0.214) (0.022) (0.028) (0.022) (0.028) (0.085) (0.095) (0.026) (0.054) (0.017)<br>8.00  9.50  3.0  6.71  0.56  0.71  0.56  0.71  3.68  3.94  0.66  1.37  0.43<br>MF-SM150<br>(0.315) (0.374) (0.118) (0.264) (0.022) (0.028) (0.022) (0.028) (0.145) (0.155) (0.026) (0.054) (0.017)<br>8.00  9.50  3.0  6.71  0.56  0.71  0.56  0.71  3.68  3.94  0.66  1.37  0.43<br>MF-SM150/33<br>(0.315) (0.374) (0.118) (0.264) (0.022) (0.028) (0.022) (0.028) (0.145) (0.155) (0.026) (0.054) (0.017)<br>8.00  9.50  3.0  6.71  0.56  0.71  0.56  0.71  3.68  3.94  0.66  1.37  0.43<br>MF-SM185/33<br>(0.315) (0.374) (0.118) (0.264) (0.022) (0.028) (0.022) (0.028) (0.145) (0.155) (0.026) (0.054) (0.017)<br>8.00  9.50  3.0  6.71  0.56  0.71  0.56  0.71  3.68  3.94  0.66  1.37  0.43<br>MF-SM200<br>(0.315) (0.374) (0.118) (0.264) (0.022) (0.028) (0.022) (0.028) (0.145) (0.155) (0.026) (0.054) (0.017)<br>8.00  9.50  3.0  6.71  0.56  0.71  0.56  0.71  3.68  3.94  0.66  1.37  0.43<br>MF-SM250<br>(0.315) (0.374) (0.118) (0.264) (0.022) (0.028) (0.022) (0.028) (0.145) (0.155) (0.026) (0.054) (0.017)<br>6.73  7.98  3.0  5.44  0.56  0.71  0.56  0.71  2.16  2.41  0.66  1.37  0.43<br>MF-SM260<br>(0.265) (0.314) (0.118) (0.214) (0.022) (0.028) (0.022) (0.028) (0.085) (0.095) (0.026) (0.054) (0.017)<br>6.73  7.98  3.0  5.44  0.56  0.71  0.56  0.71  2.16  2.41  0.66  1.37  0.43<br>MF-SM300<br>(0.265)  (0.314) (0.118) (0.214) (0.022) (0.028) (0.022) (0.028) (0.085) (0.095) (0.026) (0.054) (0.017)<br>**----- End of picture text -----**<br>


Packaging: 

TAPE & REEL:  MF-SM030, 050, 075, 075/60, 100, 100/33, 125, 260, 300 = 2000 pcs. per reel; MF-SM150, 150/33, 185/33, 200, 250 = 1500 pcs. per reel. 

**==> picture [280 x 81] intentionally omitted <==**

**----- Start of picture text -----**<br>
C<br>MM<br>DIMENSIONS: (INCHES) G<br>B<br>Terminal material:<br>Tin-plated brass F<br>H<br>D E<br>A End View<br>Side View<br>**----- End of picture text -----**<br>


**==> picture [115 x 15] intentionally omitted <==**

**----- Start of picture text -----**<br>
Recommended Pad Layout<br>MF-SM150, 150/33, 185/33, 200, 250<br>**----- End of picture text -----**<br>


_**Recommended Pad Layout MF-SM030, 050, 075, 075/60, 100, 100/33, 125, 260, 300**_ 

**==> picture [315 x 105] intentionally omitted <==**

**----- Start of picture text -----**<br>
2.3 ± 0.1 2.3 ± 0.1<br>(0.09 ± 0.004) (0.09 ± 0.004)<br>9.7 ± 0.1<br>(0.38 ± 0.004)<br>3.1 ± 0.1 3.1 ± 0.1 10.7 ± 0.1<br>(0.12 ± 0.004) (0.12 ± 0.004) (0.42 ± 0.004)<br>4.6 ± 0.1 4.6 ± 0.1<br>(0.18 ± 0.004) (0.18 ± 0.004)<br>**----- End of picture text -----**<br>


## ~~**How to Order**~~ 

**MF - SM  100/33 - 2 - 99** 

Multifuse[®] Product Designator 

Series SM = Surface Mount Component 

Hold Current, Ihold/Vmax* 030 - 300 (0.3 - 3.0 Amps) Packaging Options 

- 2 = Tape and Reel** 

- Part Number Suffix Option 

   - 99 = RoHS Compliancy As of date code April 1, 2005 all MF-SM models are RoHS compliant. The suffix “-99” can be used if a new part number is required to reference the RoHS compliance, **but including the “-99” suffx option is not recommended for new designs.** 

- Vmax entry applies only to models MF-SM075/60, MF-SM100/33, MF-SM150/33 & MF-SM185/33. 

- ** Packaged per EIA-481-2 

Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. 

The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. 

## **MF-SM Series - PTC Resettable Fuses** 

## ~~**Thermal Derating Chart - Ihold (Amps)**~~ 

|**Model**|**Ambient Operating Temperature**|**Ambient Operating Temperature**|**Ambient Operating Temperature**|**Ambient Operating Temperature**|**Ambient Operating Temperature**|**Ambient Operating Temperature**|**Ambient Operating Temperature**|**Ambient Operating Temperature**|**Ambient Operating Temperature**|
|---|---|---|---|---|---|---|---|---|---|
||**-40 ºC**|**-20 ºC**|**0 ºC**|**23 ºC**|**40 ºC**|**50 ºC**|**60 ºC**|**70 ºC**|**85 ºC**|
|MF-SM030|0.45|0.40|0.35|0.30|0.25|0.23|0.20|0.17|0.14|
|MF-SM050|0.76|0.67|0.59|0.50|0.42|0.38|0.33|0.29|0.23|
|MF-SM075|1.11|0.99|0.84|0.75|0.63|0.57|0.49|0.45|0.36|
|MF-SM075/60|1.11|0.99|0.84|0.75|0.63|0.57|0.49|0.45|0.36|
|MF-SM100|1.66|1.47|1.29|1.10|0.91|0.83|0.73|0.64|0.50|
|MF-SM100/33|1.66|1.47|1.29|1.10|0.91|0.83|0.73|0.64|0.50|
|MF-SM125|1.89|1.68|1.46|1.25|1.04|0.94|0.83|0.73|0.56|
|MF-SM150|2.27|2.01|1.76|1.50|1.25|1.13|0.99|0.87|0.68|
|MF-SM150/33|2.27|2.01|1.76|1.50|1.25|1.13|0.99|0.87|0.68|
|MF-SM185/33|2.56|2.32|2.08|1.85|1.60|1.44|1.28|1.12|0.88|
|MF-SM200|3.02|2.68|2.34|2.00|1.66|1.50|1.32|1.16|0.90|
|MF-SM250|3.78|3.35|2.93|2.50|2.08|1.88|1.65|1.45|1.13|
|MF-SM260|3.64|3.25|2.91|2.60|2.26|2.08|1.95|1.74|1.48|
|MF-SM300|4.13|3.75|3.30|2.87|2.62|2.43|2.25|2.00|1.78|



Itrip is approximately two times Ihold. 

## ~~**Typical Time to Trip at 23 °C**~~ 

**==> picture [231 x 278] intentionally omitted <==**

**----- Start of picture text -----**<br>
100<br>10<br>1<br>0.1<br>0.01<br>0.001<br>0.1 1 10 100<br>Fault Current  (Amps)<br>MF-SM030MF-SM050MF-SM075, MF-SM075/60MF-SM100, MF-SM100/33MF-SM185/33MF-SM125MF-SM150, MF-SM150/33MF-SM200MF-SM250MF-SM300MF-SM260<br>Time to Trip (Seconds)<br>**----- End of picture text -----**<br>


## ~~**Typical Part Marking**~~ 

Represents total content. Layout may vary. 

**==> picture [153 x 53] intentionally omitted <==**

**----- Start of picture text -----**<br>
MANUFACTURER'S PART IDENTIFICATION<br>TRADEMARK<br>030<br>7A DATE CODE -<br>WEEK 1 OF 2017 = 7A<br>(YEAR & WEEK)<br>WEEK 27 OF 2017 = A7<br>(WEEK & YEAR)<br>**----- End of picture text -----**<br>


Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. 

## **MF-SM Series - PTC Resettable Fuses** 

## ~~**Solder Refow Recommendations**~~ 

**==> picture [259 x 148] intentionally omitted <==**

**----- Start of picture text -----**<br>
300 Preheating Soldering Cooling<br>250<br>200<br>150<br>100<br>50<br>0<br>160–220 10–20 120<br>Time (seconds)<br>C)ϒ<br>Temperature (<br>**----- End of picture text -----**<br>


## **Solder reflow** 

- Recommended reflow methods: IR, vapor phase oven, hot air oven. 

- Devices are not designed to be wave soldered to the bottom side of the board. 

- Gluing the devices is not recommended. 

- Recommended maximum paste thickness is 0.25  mm (.010 inch). 

- Devices can be cleaned using standard industry methods and solvents. 

## **Note:** 

- If reflow temperatures exceed the recommended profile, devices may not meet the performance requirements. 

- **Rework** 

- A device should not be reworked. 

## ~~**Storage Recommendations**~~ 

The recommended long term storage conditions for Multifuse[®] Polymer PTC devices are 40 °C maximum and 70 % RH maximum. All devices should remain in the original sealed packaging prior to use. Devices may not conform with data sheet specifications if these storage recommendations are exceeded. Devices stored in this manner have an indefinite shelf life. 

MF-SM SERIES, REV. W, 09/19 Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. 

## **MF-SM, MF-SM/33, MF-SM/60 & MF-SM/250 Series Tape and Reel Specifications** 

_NOTE: Effective December 1, 2010 (product date code V0), the cover tape was changed to the new 3M[™] Universal Cover Tape (UCT)._ 

|**Tape Dimensions**|**Tape Dimensions**|**Tape Dimensions**|**Tape Dimensions**|||**MF-SM030,**<br>**MF-SM075/60;**|**MF-SM030,**<br>**MF-SM075/60;**|**MF-SM030,**<br>**MF-SM075/60;**|**MF-SM030,**<br>**MF-SM075/60;**|**MF-SM030,**<br>**MF-SM075/60;**|**MF-SM030,**<br>**MF-SM075/60;**|**MF-SM030,**<br>**MF-SM075/60;**|**MF-SM030,**<br>**MF-SM075/60;**|**MF-SM030,**<br>**MF-SM075/60;**|**MF-SM030,**<br>**MF-SM075/60;**|**MF-SM030,**<br>**MF-SM075/60;**|**050, 075, 100, 125, 260, 300;**<br>**MF-SM-100/33; MF-SM008/250**<br>**per EIA-481-2 **|**050, 075, 100, 125, 260, 300;**<br>**MF-SM-100/33; MF-SM008/250**<br>**per EIA-481-2 **|**050, 075, 100, 125, 260, 300;**<br>**MF-SM-100/33; MF-SM008/250**<br>**per EIA-481-2 **|**050, 075, 100, 125, 260, 300;**<br>**MF-SM-100/33; MF-SM008/250**<br>**per EIA-481-2 **|**MF-SM150, 200, 250;**<br>**MF-SM-150/33, MF-SM-185/33;**<br>**MF-SM013/250 per EIA 481-2**|**MF-SM150, 200, 250;**<br>**MF-SM-150/33, MF-SM-185/33;**<br>**MF-SM013/250 per EIA 481-2**|**MF-SM150, 200, 250;**<br>**MF-SM-150/33, MF-SM-185/33;**<br>**MF-SM013/250 per EIA 481-2**|**MF-SM150, 200, 250;**<br>**MF-SM-150/33, MF-SM-185/33;**<br>**MF-SM013/250 per EIA 481-2**|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|W max.|||||||||||||||||||16.3<br>(0.642)||16.3<br>(0.642)||||
|P0|||||||||||||||||4.0±0.1<br>(0.157 ± 0.004)||||4.0±0.1<br>(0.157 ± 0.004)||||
|P1|||||||||||||||||8.0 ± 0.1<br>(0.315 ± 0.004)||||12.0 ± 0.1<br>(0.472 ± 0.004)||||
|P2|||||||||||||||||2.0 ± 0.1<br>(0.079 ± 0.004)||||2.0 ± 0.1<br>(0.079 ± 0.004)||||
|A0|||||||||||||||||5.7 ±0.1<br>(0.224 ± 0.004)||||6.9±0.1<br>(0.272 ± 0.004)||||
|B0|||||||||||||||||8.1 ± 0.1<br>(0.319 ± 0.004)||||9.6±0.1<br>(0.378 ± 0.004)||||
|B1 max.|||||||||||||||||||12.1<br>(0.476)||12.1<br>(0.476)||||
|D0||||||||||||||||1.5 + 0.1/-0.0<br>(0.059 + 0.004/-0)|1.5 + 0.1/-0.0||||1.5 + 0.1/-0.0<br>(0.059 + 0.004/-0)||||
|F|||||||||||||||||7.5±0.1<br>(0.295 + 0.004)||||7.5 ± 0.1<br>(0.295 + 0.004)||||
|E1|||||||||||||||||1.75 ± 0.1<br>(0.069 ± 0.004)||||1.75 ± 0.1<br>(0.069 ± 0.004)||||
|E2 min.|||||||||||||||||||14.25<br>(0.561)||14.25<br>(0.561)||||
|T max.|||||||||||||||||||0.6<br>(0.024)||0.6<br>(0.024)||||
|T1 max.|||||||||||||||||||0.1<br>(0.004)||0.1<br>(0.004)||||
|K0|||||||||||||||||||||3.4 ± 0.1*<br>(0.134 ± 0.004)*||||
|Leader min.|||||||||||||||||||390<br>(15.35)||390<br>(15.35)||||
|Trailer min.|||||||||||||||||||160<br>(6.30)||160<br>(6.30)||||
|**Reel Dimensions**|||||||||||||||||||||||||
|A max.|||||||||||||||||||360<br>(14.17)||360<br>(14.17)||||
|N min.|||||||||||||||||||50<br>(1.97)||50<br>(1.97)||||
|W1||||||||||||||||16.4 + 2.0/-0.0<br>(0.646 + 0.079/-0)|16.4 + 2.0/-0.0||||16.4 + 2.0/-0.0<br>(0.646 + 0.079/-0)||||
|W2 max.|||||||||||||||||||22.4<br>(0.882)||22.4<br>(0.882)||||
|* Model MF-SM013/250 =<br>B1<br>T<br>COVER<br>TAPE<br>K0<br>T1||||3.8±||0.1<br>0.004)<br>P|||||||||||||||DIMENSIONS:<br>MM<br>(INCHES)<br>N(HUB DIA.)<br>(MEASURED<br>AT HUB)<br>W2<br>(MEASURED<br>AT HUB)<br>W1|||MM|
|||||(0.150 ±|||||||||||||||||||||
||||T<br>COVER<br>TAPE<br>K0<br>T1|D0||||||P2<br>0|||||||||E1||||||
|||||||||||||||||||||A|||W2||
||||||||||||||||||||||||||
||||||||||||||||||||||||||
||B1||||||||||||||||||||||N<br>W1||
||||||||||||||||||||||||||
||||||||||||||||||||||||||
||||||||A0||P1||||||||||||||||
||||||||||||||||||||||||||
||||||||||||||||||||||||||



Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. 

The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. 

## **3312 - 2 mm SMD Trimming PotentiometerBourns[®] Multifuse[®] PPTC Resettable Fuses** 

## ~~**Application Notice**~~ 

- Users are responsible for independent and adequate evaluation of Bourns[®] Multifuse[®] Polymer PTC devices in the user’s application, including the PPTC device characteristics stated in the applicable data sheet. 

- Polymer PTC devices must not be allowed to operate beyond their stated maximum ratings. Operation in excess of such maximum ratings could result in damage to the PTC device and possibly lead to electrical arcing and/or fire. Circuits with inductance may generate a voltage above the rated voltage of the polymer PTC device and should be thoroughly evaluated within the user’s application during the PTC selection and qualification process. 

- Polymer PTC devices are intended to protect against adverse effects of temporary overcurrent or overtemperature conditions up to rated limits and are not intended to serve as protective devices where overcurrent or overvoltage conditions are expected to be repetitive or prolonged. 

- In normal operation, polymer PTC devices experience thermal expansion under fault conditions. Thus, a polymer PTC device must be protected against mechanical stress, and must be given adequate clearance within the user’s application to accommodate such thermal expansion. Rigid potting materials or fixed housings or coverings that do not provide adequate clearance should be thoroughly examined and tested by the user, as they may result in the malfunction of polymer PTC devices if the thermal expansion is inhibited. 

- Exposure to lubricants, silicon-based oils, solvents, gels, electrolytes, acids, and other related or similar materials may adversely affect the performance of polymer PTC devices. 

- Aggressive solvents may adversely affect the performance of polymer PTC devices. Conformal coating, encapsulating, potting, molding, and sealing materials may contain aggressive solvents including but not limited to xylene and toluene, which are known to cause adverse effects on the performance of polymer PTCs. Such aggressive solvents must be thoroughly cured or baked to ensure their complete removal from polymer PTCs to minimize the possible adverse effect on the device. 

- Recommended storage conditions should be followed at all times. Such conditions can be found on the applicable data sheet and on the Multifuse[®] Polymer PTC Moisture/Reflow Sensitivity Classification (MSL) note: - 

- https://www.bourns.com/docs/RoHS MSL/msl_mf.pdf 

_MFAN 12/18_ Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. 

## **Legal Disclaimer Notice** 

This legal disclaimer applies to purchasers and users of Bourns[®] products manufactured by or on behalf of Bourns, Inc. and its affiliates (collectively, “Bourns”). 

Unless otherwise expressly indicated in writing, Bourns[®] products and data sheets relating thereto are subject to change without notice.  Users should check for and obtain the latest relevant information and verify that such information is current and complete before placing orders for Bourns[®] products. 

The characteristics and parameters of a Bourns[®] product set forth in its data sheet are based on laboratory conditions, and statements regarding the suitability of products for certain types of applications are based on Bourns’ knowledge of typical requirements in generic applications.  The characteristics and parameters of a Bourns[®] product in a user application may vary from the data sheet characteristics and parameters due to (i) the combination of the Bourns[®] product with other components in the user’s application, or (ii) the environment of the user application itself.  The characteristics and parameters of a Bourns[®] product also can and do vary in different applications and actual performance may vary over time.  Users should always verify the actual performance of the Bourns[®] product in their specific devices and applications, and make their own independent judgments regarding the amount of additional test margin to design into their device or application to compensate for differences between laboratory and real world conditions. 

Unless Bourns has explicitly designated an individual Bourns[®] product as meeting the requirements of a particular industry standard (e.g., ISO/TS 16949) or a particular qualification (e.g., UL listed or recognized), Bourns is not responsible for any failure of an individual Bourns[®] product to meet the requirements of such industry standard or particular qualification.  Users of Bourns[®] products are responsible for ensuring compliance with safety-related requirements and standards applicable to their devices or applications. 

Bourns[®] products are not recommended, authorized or intended for use in nuclear, lifesaving, life-critical or life-sustaining applications, nor in any other applications where failure or malfunction may result in personal injury, death, or severe property or environmental damage.  Unless expressly and specifically approved in writing by two authorized Bourns representatives on a case-by-case basis, use of any Bourns[®] products in such unauthorized applications might not be safe and thus is at the user’s sole risk.  Life-critical applications include devices identified by the U.S. Food and Drug Administration as Class III devices and generally equivalent classifications outside of the United States. 

Bourns expressly identifies those Bourns[®] standard products that are suitable for use in automotive applications on such products’ data sheets in the section entitled “Applications.”  Unless expressly and specifically approved in writing by two authorized Bourns representatives on a case-by-case basis, use of any other Bourns[®] standard products in an automotive application might not be safe and thus is not recommended, authorized or intended and is at the user’s sole risk.  If Bourns expressly identifies a sub-category of automotive application in the data sheet for its standard products (such as infotainment or lighting), such identification means that Bourns has reviewed its standard product and has determined that if such Bourns[®] standard product is considered for potential use in automotive applications, it should only be used in such sub-category of automotive applications.  Any reference to Bourns[®] standard product in the data sheet as compliant with the AEC-Q standard or “automotive grade” does not by itself mean that Bourns has approved such product for use in an automotive application. 

Bourns[®] standard products are not tested to comply with United States Federal Aviation Administration standards generally or any other generally equivalent governmental organization standard applicable to products designed or manufactured for use in aircraft or space applications. Bourns expressly identifies Bourns[®] standard products that are suitable for use in aircraft or space applications on such products’ data sheets in the section entitled “Applications.”  Unless expressly and specifically approved in writing by two authorized Bourns representatives on a case-by-case basis, use of any other Bourns[®] standard product in an aircraft or space application might not be safe and thus is not recommended, authorized or intended and is at the user’s sole risk. 

The use and level of testing applicable to Bourns[®] custom products shall be negotiated on a case-by-case basis by Bourns and the user for which such Bourns[®] custom products are specially designed.  Absent a written agreement between Bourns and the user regarding the use and level of such testing, the above provisions applicable to Bourns[®] standard products shall also apply to such Bourns[®] custom products. 

Users shall not sell, transfer, export or re-export any Bourns[®] products or technology for use in activities which involve the design, development, production, use or stockpiling of nuclear, chemical or biological weapons or missiles, nor shall they use Bourns[®] products or technology in any facility which engages in activities relating to such devices.  The foregoing restrictions apply to all uses and applications that violate national or international prohibitions, including embargos or international regulations.  Further, Bourns[®] products and Bourns technology and technical data may not under any circumstance be exported or re-exported to countries subject to international sanctions or embargoes.  Bourns[®] products may not, without prior authorization from Bourns and/or the U.S. Government, be resold, transferred, or re-exported to any party not eligible to receive U.S. commodities, software, and technical data. 

To the maximum extent permitted by applicable law, Bourns disclaims (i) any and all liability for special, punitive, consequential, incidental or indirect damages or lost revenues or lost profits, and (ii) any and all implied warranties, including implied warranties of fitness for particular purpose, non-infringement and merchantability. 

_For your convenience, copies of this Legal Disclaimer Notice with German, Spanish, Japanese, Traditional Chinese and Simplified Chinese bilingual versions are available at:_ 

_Web Page: http://www.bourns.com/legal/disclaimers-terms-and-policies PDF: http://www.bourns.com/docs/Legal/disclaimer.pdf_ 

C1753 05/17/18R