MF-FSMF020X-2

**==> picture [505 x 127] intentionally omitted <==**

**----- Start of picture text -----**<br>
Features Applications<br>■ Compact design to save board space - ■ USB port protection<br>0603 footprint ■ HDMI 1.4 Source protection<br>■ Small size results in very fast time to react ■ PC motherboards - Plug and Play<br>to fault events protection<br>■ Low profile ■ Mobile phones - Battery and port<br>: “74 ■ RoHS compliant* and halogen free** protection<br>■ Agency recognition: ■ PDAs / digital cameras<br>MF-FSMF Series - PTC Resettable Fuses<br>BOURNS  iy<br>&<br>RoHS COMPLIANT*<br>HALOGEN FREE**<br>**----- End of picture text -----**<br>


## ~~**Electrical Characteristic**~~ 

**==> picture [502 x 516] intentionally omitted <==**

**----- Start of picture text -----**<br>
|||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|Tripped Power|
|Vmax.|Imax.|Ihold|Itrip|Resistance|Max. Time To Trip|Dissipation|Agency Recognition|
|Model|
|at 23 °C|Ohms at 23 °C|at 23 °C|Watts at 23 °C|cUL|TÜV|
|==|Volts|Amps|Amps|RMin.|R1Max.|Amps|Seconds|Typ.|E174545|R 50256634|
|MF-FSMF010X|15|40|0.10|0.30|0.90|6.00|0.50|1.0|0.5|✓|✓|
|po|a|ee|es|es|es|ee|
|MF-FSMF020X|9|40|0.20|0.50|0.55|3.50|1.00|0.6|0.5|✓|✓|
|po|
|MF-FSMF025X|6|40|0.25|0.75|0.20|1.40|8.00|0.1|0.5|✓|✓|
|Po|
|MF-FSMF035X|6|40|0.35|0.75|0.20|1.40|8.00|0.1|0.5|✓|✓|
|po|
|MF-FSMF050X|6|40|0.50|1.00|0.10|0.80|8.00|0.1|0.5|✓|✓|
|PE|CE|
|Environmental Characteristics|Additional Information|
|Click these links for more information:|
|Item|Condition|Criteria|
|Operating Temperature|-40 °C to +85 °C|
|Recommended Storage|+40 °C max. / 70 % R.H. max.|PRODUCT|TECHNICAL|INVENTORY|SAMPLES|CONTACT|
|SELECTOR|LIBRARY|
|±5 % typical resistance|
|Passive Aging|+85 °C, 1000 hours|
|change|
|±5 % typical resistance|
|Humidity Aging|+85 °C, 85 % R.H. 1000 hours|
|change|
|±10 % typical resistance|
|Thermal Shock|-40 °C to +85 °C, 20 times|
|change|
|No change|
|Solvent Resistance|MIL-STD-202, Method 215|
|(Marking still legible)|
|MIL-STD-883C, Method 2007.1|No change|
|Vibration|
|Condition A|(Rmin < R < R1max)|
|Moisture Sensitivity Level|
|See Note|
|(MSL)|
|ESD Classification|Class 6 (per AEC-Q200-2, HBM)|
|===|
|Test Procedures and Requirements|
|Item|Test Conditions|Accept/Reject Criteria|
|Visual/Mechanical|Verify dimensions and materials|Per MF physical description|
|Resistance|In still air @ 23 °C|Rmin ≤ R ≤ Rmax|
|Time to Trip|At specified current, Vmax, 23 °C, still air|T ≤ max. time to trip (seconds)|
|Hold Current|30 min. at Ihold, still air|No trip|
|Trip Cycle Life|Vmax, Imax, 100 cycles|No arcing or burning|
|Trip Endurance|Vmax, 48 hours|No arcing or burning|
|Solderability|ANSI/J-STD-002|95 % min. coverage|

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


PRODUCT TECHNICAL INVENTORY SAMPLES CONTACT SELECTOR **LIBRARY** 

- 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) 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. 

**WARNING Cancer and Reproductive Harm** www.P65Warnings.ca.gov 

**Additional Applications** ■ Game console port protection 

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

## ~~**Thermal Derating Table - I**~~ **hold** ~~**(Amps)**~~ 

**==> picture [505 x 27] intentionally omitted <==**

**----- Start of picture text -----**<br>
Ambient Operating Temperature<br>Model<br>-40 °C -20 °C 0 °C 23 °C 40 °C 50 °C 60 °C 70 °C 85 °C<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 °C**|**-20 °C**|**0 °C**|**23 °C**|**40 °C**|**50 °C**|**60 °C**|**70 °C**|**85 °C**|
|||||||||||
|MF-FSMF010X|0.13|0.12|0.11|0.10|0.08|0.07|0.06|0.05|0.03|
|MF-FSMF020X|0.27|0.25|0.23|0.20|0.17|0.14|0.12|0.10|0.07|
|MF-FSMF025X|0.32|0.29|0.27|0.25|0.21|0.18|0.16|0.14|0.10|
|MF-FSMF035X|0.47|0.41|0.38|0.35|0.29|0.26|0.24|0.20|0.14|
|MF-FSMF050X|0.67|0.59|0.54|0.50|0.41|0.37|0.34|0.29|0.20|



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

|**_Top View_**<br>**I**|**_Top View_**<br>**I**||**_Bottom View_**|**_Bottom View_**|**_Bottom View_**|**_Bottom View_**|B<br> <br>**_Si_**|B<br> <br>**_Si_**|**_de Vie_**|C<br>**_w_**<br>**_Terminal material_**<br>Nickel/gold plated|C<br>**_w_**<br>**_Terminal material_**<br>Nickel/gold plated|C<br>**_w_**<br>**_Terminal material_**<br>Nickel/gold plated|C<br>**_w_**<br>**_Terminal material_**<br>Nickel/gold plated|||**_Recom_**|**_Recom_**|**_mend_**|**_mend_**|**_ed Pad Layout_**|**_ed Pad Layout_**|**_ed Pad Layout_**|1.00±0.05<br>(.039 ± .002)<br> 0.05<br>.002)|1.00±0.05<br>(.039 ± .002)<br> 0.05<br>.002)|1.00±0.05<br>(.039 ± .002)<br> 0.05<br>.002)|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
||||A<br>D|A||||||||||||||||||||||
||**I**||||||B|||||||0.70±0.05|||||||||1.00±0.05|||
|||||||||||||||||||||||||||
||||||||||||||||||||||||(.039 ± .002)<br> 0.05<br>002)|||
|||||||||||||||||||||||||||
||||||||||||||||||||||1.00±|||||
|||||||||||||||(028 ± 002)|||||||(039 ±|||||
|||||||||||||||.|.|||||.|||.|||
|**Model**|||**A**|||||||**B**|||||**C**|||||||||**D**||
||||**Min.**||||**Max.**|||**Min.**||**Max.**|||**Min.**|||||**Max.**||||**Min.**||
|MF-FSMF010X|||1.45<br>(0.057)||||1.85<br>(0.073)|||0.65<br>(0.026)||1.05<br>(0.041)|||0.30<br>(0.012)|||||0.65<br>(0.026)||||0.20<br>(0.008)||
|MF-FSMF020X|||1.45<br>(0.057)||||1.85<br>(0.073)|||0.65<br>(0.026)||1.05<br>(0.041)|||0.30<br>(0.012)|||||0.65<br>(0.026)||||0.20<br>(0.008)||
|MF-FSMF025X|||1.45<br>(0.057)||||1.85<br>(0.073)|||0.65<br>(0.026)||1.05<br>(0.041)|||0.30<br>(0.012)|||||0.65<br>(0.026)||||0.20<br>(0.008)||
|MF-FSMF035X|||1.45<br>(0.057)||||1.85<br>(0.073)|||0.65<br>(0.026)||1.05<br>(0.041)|||0.30<br>(0.012)|||||0.65<br>(0.026)||||0.20<br>(0.008)||
|MF-FSMF050X|||1.45<br>(0.057)||||1.85<br>(0.073)|||0.65<br>(0.026)||1.05<br>(0.041)|||0.65<br>(0.026)|||||1.00<br>(0.039)||||0.20<br>(0.008)||
|||||||||||||||||||||DIMENSIONS:|||||MM<br>(INCHES)|



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-FSMF Series - PTC Resettable Fuses** 

## ~~**How To Order**~~ 

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

**==> picture [86 x 8] intentionally omitted <==**

**----- Start of picture text -----**<br>
MF - FSMF 020 X - 2<br>**----- End of picture text -----**<br>


PART IDENTIFICATION: Multifuse[®] Product MF-FSMF010X = II MF-FSMF020X = I Designator MF-FSMF025X = + Series MF-FSMF035X = • MF-FSMF050X = — FSMF = 0603 Surface Mount Component BI-WEEKLY DATE CODE WILL APPEAR ON THE PACKAGING LABEL:WEEK 1 AND 2 = A Hold Current, Ihold WEEK 51 AND 52 = Z 010-050 (0.10 - 0.50 Amps) 

## ~~**Packaging Quantity**~~ 

**==> picture [156 x 15] intentionally omitted <==**

**----- Start of picture text -----**<br>
Model Packaging Quantity<br>**----- End of picture text -----**<br>


|**Model**|**Packaging Quantity**|
|---|---|
|MF-FSMF010X|5,000pcs.per reel|
|MF-FSMF020X|6,000pcs.per reel|
|MF-FSMF025X|6,000pcs.per reel|
|MF-FSMF035X|6,000pcs.per reel|
|MF-FSMF050X|4,000 pcs. per reel|



Multifuse[®] freeXpansion™ Design Packaging Packaged per EIA 481-1 -2 = Tape and Reel 

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

**==> picture [258 x 131] intentionally omitted <==**

**----- Start of picture text -----**<br>
tp<br>TP CRITICAL ZONE<br>RAMP-UP TL TO TP<br>TL<br>t L<br>Ts max<br>RAMP-DOWN<br>Ts min<br>ts<br>PREHEAT<br>25<br>t  25 °C TO PEAK<br>Temperature<br>**----- End of picture text -----**<br>


## **Notes:** 

- MF-FSMF models are intended for reflow soldering (including, but not limited to heating plate, hot air, IR, nitrogen, and vapor phase). 

- Wave soldering is permissible only if the device is on the top of the PCB, opposite the heat source. 

- Hand soldering is not recommended for these devices. 

- All temperatures refer to the topside of the device, measured on the device body surface. 

- If reflow temperatures exceed the recommended profile, devices may not meet the published specifications. 

- Compatible with Pb and Pb-free solder reflow profiles. 

- Excess solder may cause a short circuit. 

- Please refer to the Multifus ~~e~~[®] Polymer PTC Resettable Fuse Soldering Recommendations document for more details. 

## **Time** 

**==> picture [506 x 18] intentionally omitted <==**

**----- Start of picture text -----**<br>
Profile Feature Pb-Free Assembly<br>**----- End of picture text -----**<br>


|**Profile Feature**|**Pb-Free Assembly**|
|---|---|
|||
|Average Ramp-Up Rate (Tsmaxto Tp)|3 °C / second max.|
|PREHEAT:<br>Temperature Min. (Tsmin)<br>Temperature Max. (Tsmax)<br>Time (Tsminto Tsmax) (ts)|150 °C<br>200 °C<br>60~180 seconds|
|TIME MAINTAINED ABOVE:<br>Temperature (TL)<br>Time (tL)|217 °C<br>60~150 seconds|
|Peak Temperature (Tp)|260 °C|
|Time within 5 °C of Actual Peak Temperature (tp)|20~40 seconds|
|Ramp-Down Rate|6 °C / second max.|
|Time 25 °C to Peak Temperature|8 minutes max.|



“freeXpansion Design” is a trademark of Bourns, Inc. 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-FSMF Series - PTC Resettable Fuses** 

**==> picture [516 x 359] intentionally omitted <==**

**----- Start of picture text -----**<br>
Typical Time to Trip at 23 °C<br>100<br>10<br>1<br>0.1<br>0.01<br>0.001<br>0.1 1 10<br>Fault Current (Amps)<br>MF-FSMF010XMF-FSMF020XMF-FSMF025X &  MF-FSMF035XMF-FSMF050X<br>Time to Trip (Seconds)<br>**----- End of picture text -----**<br>


The Time to Trip curves represent typical performance of a device in a simulated application environment. Actual performance in specific customer applications may differ from these values due to the influence of other variables. 

**Asia-Pacific:** Tel: +886-2 2562-4117 • Email: asiacus@bourns.com **EMEA:** Tel: +36 88 885 877 • Email: eurocus@bourns.com **The Americas:** Tel: +1-951 781-5500 • Email: americus@bourns.com **www.bourns.com** 

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-FSMF Series Tape and Reel Specifications** 

**==> picture [468 x 148] intentionally omitted <==**

**----- Start of picture text -----**<br>
W2<br>(MEASURED<br>10 P0 AT HUB)<br>T P0 D0 E1<br>COVER<br>TAPE<br>B0 F A N (HUB DIA.)<br>W<br>P2 P1 A0<br>TRAILER LEADER<br>NO COMPONENT COMPONENTS NO COMPONENT<br>0.055 ± 0.01 160 390 W1 (MEASURED<br>(.0022 ± .0004) (6.30) (15.35) AT HUB)<br>MIN. MIN.<br>USER DIRECTION OF FEED<br>**----- End of picture text -----**<br>


|**Tape Dimensions**<br>**per EIA-481**|**MF-FSMF010X**|**MF-FSMF010X**|**M**<br>**M**<br>**M**|**F-FSMF020X**<br>**F-FSMF025X**<br>**F-FSMF035X**|**F-FSMF020X**<br>**F-FSMF025X**<br>**F-FSMF035X**|**MF-FSMF050X**|**MF-FSMF050X**|
|---|---|---|---|---|---|---|---|
|W||||8.0 ± 0.1<br>(.315 ± .004)||||
|P0||||4.0 ± 0.10<br>(.157 ± .004)||||
|P1||||4.00 ± 0.05<br>(.157 ± .002)||||
|P2||||2.00 ± 0.05<br>(.079 ± .002)||||
|A0||||1.17 ± 0.05<br>(.046 ± .002)||||
|B0||||2.02 ± 0.05<br>(.079 ± .002)||||
|D0||||1.55 ± 0.05<br>(.061 +.002)||||
|F||||3.5 ± 0.05<br>(.138 ± .002)||||
|E1||||1.75 ± 0.1<br>(.069 ± .004)||||
|T||0.75 ± 0.05<br>(.030 ± .002)||0.60 ± 0.05<br>(.024 ± .002)|||0.95 ± 0.05<br>(.037 ± .002)|
|10 P0||40.0 ± 0.1<br>(1.575 ± .004)|(|40.0 ± 0.1<br>1.575 ± .004)|||40.0 ± 0.1<br>(1.575 ± .004)|
|**Reel Dimensions**||||||||
|A max.|||||185<br>(7.283)|||
|N min.|||||50<br>(1.97)|||
|W1||(||8.4 +1.5/-0<br>.331 +.059/-0)||||
|W2max.|||||14.4<br>(.567)|||



MF-FSMF SERIES, REV. J, 06/21 

DIMENSIONS: 

MM (INCHES) 

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. 

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 

® product with other components ® 

the actual performance of the Bourns[®] 

® product as meeting the requirements of a particular industry 

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 

Bourns[®] 

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

® 

® 

® 

Bourns[®] 

® standard products that are suitable for use in aircraft “Applications.” Unless expressly and specifically ® standard 

the user’s sole risk. 

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 

Users shall not sell, transfer, export or re-export any Bourns[®] 

Bourns[®] 

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_