MF-SM200-2

Resettable Fuse, PPTC, 3425 (8763 Metric), MF-SM, 15 VDC, 2 A, 4 A, 12 s

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Manufacturer: BOURNS
Product type: Surface Mount PPTCs
Thermistor Mounting:SMD; Product Range:MF-SM Series; Holding Current:2A; Tripping Current:4A; Voltage Rating:15V; Operating Temperature Min:-40°C; Operating Temperature Max:85°C; Automotive Qualificat
SVHC: No SVHC (04-Feb-2026)
Time to Trip: 12s
Trip Current: 4A
Product Range: MF-SM
Voltage Rating: 15VDC
Holding Current: 2A
PPTC Case Style: 3425 (8763 Metric)
Current Rating Max: 100A
Thermistor Mounting: SMD
Operating Temperature Max: 85°C
Operating Temperature Min: -40°C
Automotive Qualification Standard: AEC-Q200

Delivery and price
Units per pack	3000
Price	0.235 €
Current stock	1000+
Lead time	30 days

Datasheet

## **Features** 

■ Compliant with AEC-Q200 Rev-C- Stress ■ RoHS compliant* and halogen free** Test Qualification for Passive Components ■ Agency recognition: in Automotive Applications ■ Patents pending 

- Surface mount devices 

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7A<br>**----- End of picture text -----**<br>


- Fully compatible with current industry standards 

- Packaged per EIA 481-2 standard 

## **MF-SM Series – PTC Resettable Fuses** RPOURNS BRT 

## **Electrical Characteristics** 

**Tripped Max. Time V max. I max Ihold Itrip Resistance To Trip DissiPowerpation Model Volts Amps Amperes Ohms Amperes Seconds Watts at 23 °C at 23 °C at 23 °C at 23 °C at 23 °C** ~~rd~~ **Hold Trip R Min. R1 Max. Max. Typ.** ~~a~~ MF-SM030 60 40 0.30 0.60 0.90 4.80 1.5 3.0 1.7 ~~a~~ MF-SM050 ~~GG~~ 60 40 ~~OG~~ 0.50 1.00 0.35 1.40 2.5 4.0 1.7 ~~OG~~ MF-SM075 30 80 0.75 1.50 0.23 1.00 8.0 0.3 1.7 ~~a~~ MF-SM075/60 ~~a~~ 60 ~~OO~~ 10 0.75 1.50 ~~GG~~ 0.23 1.00 8.0 0.3 1.7 ~~a~~ MF-SM100 30 ~~GG~~ 80 1.10 2.20 ~~GG~~ 0.12 0.48 8.0 0.5 1.7 MF-SM100/33 33 40 1.10 2.20 0.12 0.41 8.0 0.5 1.7 ~~oo TE LE a~~ MF-SM125 ~~GG~~ 15 100 ~~OG~~ 1.25 2.50 0.07 0.25 8.0 2.0 1.7 ~~OG~~ MF-SM150 15 100 1.50 3.00 0.06 0.25 8.0 5.0 1.9 ~~a~~ MF-SM150/33 ~~a~~ 33 ~~OO~~ 40 1.50 3.00 ~~GG~~ 0.06 0.23 8.0 5.0 1.9 ~~a~~ MF-SM185/33 33 ~~GG~~ 40 1.80 3.60 ~~GG~~ 0.04 0.15 8.0 5.0 1.9 MF-SM200 15 100 2.00 4.00 0.045 0.125 8.0 12.0 1.9 ~~oo TE LE GOO~~ MF-SM250 15 100 2.50 5.00 0.024 0.085 8.0 25.0 1.9 ~~a~~ MF-SM260 6 ~~GG~~ 100 2.60 5.20 ~~GG~~ 0.025 0.075 8.0 20.0 1.7 MF-SM300 6 100 3.00 6.00 0.015 0.048 8.0 35.0 1.5 ~~ooo OTT oTETET~~ **Environmental Characteristics Additional Information** Click these links for more information: **Item Condition Criteria** Operating Temperature -40 °C to +85 °C Maximum Device Surface +125 °C Temperature in Tripped State PRODUCT TECHNICAL INVENTORY SAMPLES CONTACT SELECTOR LIBRARY ±5 % typical Passive Aging +85 °C, 1000 hours resistance change ±5 % typical Humidity Aging +85 °C, 85 % R.H. 7 days resistance change MIL-STD-202F, Method 107G, ±10 % typical -55 °C to +85 °C, 20 cycle resistance change Thermal Shock -20 % typical -55 °C to +85 °C, 20 cycles resistance change MIL-STD-883C, Method 2007.1 Vibration Rmin ≤ R ≤ R1max Condition A Moisture Sensitivity Level (MSL) Level 1 ESD Classification - HBM Class 6 ~~===~~ * RoHS Directive 2015/863, Mar 31, 2015 and Annex. **Bourns considers a product to be “halogen free” if (a) the Bromine (Br) content is 900 ppm or less; (b) the Chlorine (Cl) **WARNING** 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 **Cancer and Reproductive Harm** applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last www.P65Warnings.ca.gov page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.. 

**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: 

■ Computers & peripherals 

- General electronics 

- Automotive applications 

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

## ~~**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|
|Time to Trip .......................................................At specified current, Vmax, 23 °C ....................T≤max. time to trip (seconds)|
|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|
|http://www.ul.com/ Follow link to Online Certificates Directory, then enter UL File No.|
|E174545, orclick here|



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

## ~~**Solder Reflow Recommendations**~~ 

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300 Preheating Soldering Cooling<br>Solder reflow<br>250 •<br>•<br>200 board.<br>•  Gluing the devices is not recommended.<br>150<br>•<br>100 •<br>Note:<br>50<br>•<br>0 meet the performance requirements.<br>Rework<br>160–220 10–20 120<br>•  A device should not be reworked.<br>Time (seconds)<br>Temperature (°C)<br>**----- End of picture text -----**<br>


- 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. 

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

## ~~**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. 

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** 

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

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



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. 

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


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

_**Recommended Pad Layout MF-SM150, 150/33, 185/33, 200, 250**_ 

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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>MM 4.6  ±  0.1 4.6  ±  0.1<br>DIMENSIONS: (INCHES) (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” suffix 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)**~~ 

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Ambient Operating Temperature<br>Model<br>-40 ºC -20 ºC 0 ºC 23 ºC 40 ºC 50 ºC 60 ºC 70 ºC 85 ºC<br>MF-SM030 0.45 0.40 0.35 0.30 0.25 0.23 0.20 0.17 0.14<br>**----- End of picture text -----**<br>


|**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**~~ 

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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. 

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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, 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**|||**MF-SM030, 050, 075, 100, 125, 260, 300;**<br>**MF-SM075/60; MF-SM-100/33; MF-SM008/250F**<br>**per EIA-481-2 **|**MF-SM030, 050, 075, 100, 125, 260, 300;**<br>**MF-SM075/60; MF-SM-100/33; MF-SM008/250F**<br>**per EIA-481-2 **|**MF-SM030, 050, 075, 100, 125, 260, 300;**<br>**MF-SM075/60; MF-SM-100/33; MF-SM008/250F**<br>**per EIA-481-2 **|**MF-SM030, 050, 075, 100, 125, 260, 300;**<br>**MF-SM075/60; MF-SM-100/33; MF-SM008/250F**<br>**per EIA-481-2 **|**MF-SM030, 050, 075, 100, 125, 260, 300;**<br>**MF-SM075/60; MF-SM-100/33; MF-SM008/250F**<br>**per EIA-481-2 **|**MF-SM030, 050, 075, 100, 125, 260, 300;**<br>**MF-SM075/60; MF-SM-100/33; MF-SM008/250F**<br>**per EIA-481-2 **|**MF-SM030, 050, 075, 100, 125, 260, 300;**<br>**MF-SM075/60; MF-SM-100/33; MF-SM008/250F**<br>**per EIA-481-2 **|**MF-SM030, 050, 075, 100, 125, 260, 300;**<br>**MF-SM075/60; MF-SM-100/33; MF-SM008/250F**<br>**per EIA-481-2 **|**MF-SM030, 050, 075, 100, 125, 260, 300;**<br>**MF-SM075/60; MF-SM-100/33; MF-SM008/250F**<br>**per EIA-481-2 **|**MF-SM030, 050, 075, 100, 125, 260, 300;**<br>**MF-SM075/60; MF-SM-100/33; MF-SM008/250F**<br>**per EIA-481-2 **|**MF-SM030, 050, 075, 100, 125, 260, 300;**<br>**MF-SM075/60; MF-SM-100/33; MF-SM008/250F**<br>**per EIA-481-2 **|**MF-SM030, 050, 075, 100, 125, 260, 300;**<br>**MF-SM075/60; MF-SM-100/33; MF-SM008/250F**<br>**per EIA-481-2 **|**MF-SM030, 050, 075, 100, 125, 260, 300;**<br>**MF-SM075/60; MF-SM-100/33; MF-SM008/250F**<br>**per EIA-481-2 **|**MF-SM030, 050, 075, 100, 125, 260, 300;**<br>**MF-SM075/60; MF-SM-100/33; MF-SM008/250F**<br>**per EIA-481-2 **|**MF-SM030, 050, 075, 100, 125, 260, 300;**<br>**MF-SM075/60; MF-SM-100/33; MF-SM008/250F**<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**|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|W max.|||||||||||||||||16.3<br>(0.642)||16.3<br>(0.642)|||
|P0|||||||||||||||||||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|||1.5 + 0.1/-0.0<br>(0.059 + 0.004/-0)|||
||||||||||||||||(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|||16.4 + 2.0/-0.0<br>(0.646 + 0.079/-0)|||
||||||||||||||||(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|||||||||||||F<br>E2<br>E1<br>W||DIMENSIONS:||MM<br>(INCHES)<br>N(HUB DIA.)<br>(MEASURED<br>AT HUB)<br>W2<br>(MEASURED<br>AT HUB)<br>W1|
|||(0.150 ±||||||||||||||||||||
||R<br>|D0||||||P2<br>0|||||||||E1|||||
|||||||||||||||||||A|||W2|
|||||||||||||||||||||||
|||||||||||||||||||||||
||||||||||||||||||||||N|
||||||||||||||||||||||W1|
|||||||||||||||||||||||
||||||A0||P1|||||||||||||||
|||||||||||||||||||||||



## 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. 

## **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 

Unless otherwise expressly indicated in writing, Bourns[®] products and data sheets relating thereto are subject to change 

and complete before placing orders for Bourns[®] products. 

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® product with other components ® 

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Bourns[®] 

on a case-by-case basis, use of any Bourns[®] 

® 

® 

® 

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and the user for which such Bourns[®] custom and the user regarding the use and level of also apply to such Bourns[®] custom products. 

® custom products shall be negotiated on a case-by-case basis by Bourns are specially designed. Absent a written agreement between Bourns testing, the above provisions applicable to Bourns ® standard products shall 

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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 

_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_

Updated at June 8, 2026

Bourns, Inc. is a globally recognized manufacturer of high-reliability electronic components, headquartered in Riverside, California. Renowned for its engineering excellence, the company delivers critical solutions across a diverse range of demanding markets, including automotive, industrial, consumer electronics, telecommunications, and medical equipment. The Bourns product portfolio is anchored by an industry-leading selection of passive components and circuit protection devices. The brand is particularly dominant in magnetic components, offering thousands of high-performance power inductors, alongside specialized RF and toroidal inductors engineered for optimized power management and signal integrity. Equally prominent is their comprehensive suite of circuit protection solutions. This robust lineup features a vast array of standard and resettable fuses, transient voltage suppressors (including TVS varistors and diodes), and gas discharge tubes (GDTs) designed to rigorously safeguard sensitive electronics against overvoltage and overcurrent faults. Beyond its core passives and protection technologies, Bourns manufactures highly effective EMC and RFI suppression components, such as common mode chokes and power line filters. The company's offering also extends into discrete semiconductors and power management, including Schottky diodes, fast recovery rectifiers, bridge rectifiers, and board-level transformers. This expansive breadth of quality components provides design engineers with a trusted foundation for developing resilient, efficient, and long-lasting electronic systems.

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