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MF-NSMF125-2
Resettable Fuse, PPTC, 1206 (3216 Metric), MF-NSMF, 6 V, 1.25 A, 2.5 A, 0.2 s
⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.
- Manufacturer: BOURNS
- Product type: Surface Mount PPTCs
- SVHC: No SVHC (04-Feb-2026)
- Time to Trip: 0.2s
- Trip Current: 2.5A
- Product Range: MF-NSMF
- Voltage Rating: 6V
- Holding Current: 1.25A
- PPTC Case Style: 1206 (3216 Metric)
- Current Rating Max: 100A
- Operating Temperature Max: 85°C
- Operating Temperature Min: -40°C
- Automotive Qualification Standard: AEC-Q200
| Delivery and price | |
|---|---|
| Units per pack | 1500 |
| Price | 0.241 € |
| Current stock | 1000+ |
| Lead time | 30 days |
Datasheet
**==> picture [128 x 48] intentionally omitted <==** **----- Start of picture text -----**<br> AUTOMOTIVE<br>GRADE<br>*RoHS COMPLIANT,<br>**HALOGEN FREE &AEC-Q200 COMPLIANT<br>**----- End of picture text -----**<br> ## **Features** n Compliant with AEC-Q200 Rev-D Stress n Symmetrical design Test Qualification for Passive Components n Low profile in Automotive Applications - n RoHS compliant* and halogen free** - n Compact design to save board space - 1206 footprint - n Agency recognition: - n Small size results in very fast time to react to fault events - **MF-NSMF Series - PTC Resettable Fuses** ~~**Electrical Characteristics**~~ |**Model**<br>**Vmax.**<br>**Imax.**<br>**Ihold**<br>**Itrip**<br>**Resistance**<br>**Max. Time To Trip**<br>**Tripped Power**<br>**Dissipation**<br>**Agency Recognition**<br>**at 23 °C**<br>**Ohms at 23 °C**<br>**at 23 °C**<br>**Watts at 23 °C**<br>**cUL**<br>**TÜV**<br>**Volts**<br>**Amps**<br>**Amps**<br>**RMin.**<br>**R1Max.**<br>**Amps**<br>**Seconds**<br>**Typ.**<br>E174545<br>R 50256634<br>MF-NSMF012<br>30.0<br>10<br>0.12<br>0.29<br>1.35<br>8.50<br>1.0<br>0.20<br>0.6<br>3<br>3<br>MF-NSMF016<br>30.0<br>10<br>0.16<br>0.37<br>0.70<br>6.00<br>1.0<br>0.30<br>0.6<br>3<br>3<br>MF-NSMF020<br>24.0<br>10<br>0.20<br>0.46<br>0.60<br>2.60<br>1.0<br>0.60<br>0.6<br>3<br>3<br>MF-NSMF020X<br>30.0<br>60<br>0.20<br>0.40<br>0.60<br>3.30<br>1.0<br>0.60<br>0.6<br>3<br>3<br>MF-NSMF025X<br>16.0<br>20<br>0.25<br>0.50<br>0.45<br>2.30<br>8.0<br>0.08<br>0.6<br>3<br>3<br>MF-NSMF035<br>6.0<br>100<br>0.35<br>0.75<br>0.30<br>1.20<br>8.0<br>0.10<br>0.6<br>3<br>3<br>MF-NSMF035X<br>16.0<br>20<br>0.35<br>0.75<br>0.30<br>1.40<br>3.5<br>0.14<br>0.6<br>3<br>3<br>MF-NSMF050<br>13.2<br>100<br>0.50<br>1.00<br>0.15<br>0.70<br>8.0<br>0.10<br>0.6<br>3<br>3<br>MF-NSMF075<br>6.0<br>100<br>0.75<br>1.50<br>0.10<br>0.40<br>8.0<br>0.20<br>0.6<br>3<br>3<br>MF-NSMF110<br>6.0<br>100<br>1.10<br>2.20<br>0.06<br>0.20<br>8.0<br>0.10<br>0.6<br>3<br>3<br>MF-NSMF125<br>6.0<br>100<br>1.25<br>2.50<br>0.05<br>0.14<br>8.0<br>0.20<br>0.6<br>3<br>3<br>MF-NSMF150<br>6.0<br>100<br>1.50<br>3.00<br>0.03<br>0.13<br>8.0<br>0.30<br>0.6<br>3<br>3<br>MF-NSMF175<br>6.0<br>100<br>1.75<br>3.50<br>0.02<br>0.085<br>8.0<br>1.00<br>0.7<br>3<br>3<br>~~EEE~~<br>~~ee~~<br>~~ee ee~~<br>~~ee ee~~<br>~~ee~~<br>~~Fe~~<br>~~Gener ncn Gennes~~<br>~~ee~~<br>~~ee~~<br>~~Fe~~<br>~~Gener ncn Gennes~~<br>~~ee~~<br>~~ee~~<br>~~Fe~~<br>~~Gener ncn Gennes~~<br>~~ee~~<br>~~ee~~<br>~~Fe~~<br>~~Gener ncn Gennes~~<br>~~ee~~| |---| |MF-NSMF200<br>6.0<br>100<br>2.00<br>4.00<br>0.02<br>0.085<br>8.0<br>1.00<br>0.7<br>3<br>3<br>~~ee a a ee~~| || |~~**Additional Information**~~<br>~~**Environmental Characteristics**~~| |Click these links for more information:<br>PRODUCT<br>TECHNICAL<br>LIBRARY<br>INVENTORY<br>SAMPLES<br>CONTACT<br>**Item**<br>**Condition**<br>**Criteria**<br>Operating Temperature<br>-40 °C to +85 °C<br>Recommended Storage<br>+40 °C max. / 70 % R.H. max.<br>Passive Aging<br>+85 °C, 1000 hours<br>±5 % typical resistance<br>change<br>Humidity Aging<br>+85 °C, 85 % R.H. 1000 hours<br>±5 % typical resistance<br>change<br>Thermal Shock<br>-40 °C to +85 °C, 20 times<br>±10 % typical resistance<br>change<br>Solvent Resistance<br>MIL-STD-202, Method 215<br>No change<br>(marking still legible)<br>Vibration<br>MIL-STD-883C, Method 2007.1<br>Condition A<br>No change<br>(Rmin< R < R1max)<br>Moisture Sensitivity Level<br>(MSL)<br>See Note<br>ESD Classification<br>Class 6 (per AEC-Q200-2, HBM)<br>~~===~~| |* 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.<br>Specifications are subject to change without notice. Users should verify actual device performance in their specific<br>applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last<br>page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.<br>**WARNING**<br>**Cancer and Reproductive Harm**<br>www.P65Warnings.ca.gov| ** 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** n USB port protection - USB 2.0, 3.0 & OTG - n HDMI 1.4 Source protection - n PC motherboards - Plug and Play protection - n Mobile phones - Battery and port protection - n PDAs / digital cameras n Game console port protection ## **MF-NSMF Series - PTC Resettable Fuses** ## ~~**Test Procedures and Requirements**~~ **==> picture [506 x 18] intentionally omitted <==** **----- Start of picture text -----**<br> Item Test Conditions Accept/Reject Criteria<br>**----- End of picture text -----**<br> |~~**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, Imax, 48 hours|No arcing or burning| |Solderability|245 °C ± 5 °C, 5 seconds|95 % min. coverage| ## ~~**Thermal Derating Table - Ihold (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-NSMF012|0.19|0.17|0.15|0.12|0.11|0.10|0.09|0.08|0.07| |MF-NSMF016|0.21|0.20|0.18|0.16|0.14|0.13|0.12|0.11|0.09| |MF-NSMF020|0.30|0.27|0.24|0.20|0.18|0.16|0.14|0.12|0.11| |MF-NSMF020X|0.30|0.27|0.24|0.20|0.18|0.16|0.14|0.12|0.10| |MF-NSMF025X|0.39|0.35|0.31|0.25|0.23|0.21|0.18|0.16|0.13| |MF-NSMF035|0.51|0.46|0.40|0.35|0.30|0.27|0.24|0.22|0.18| |MF-NSMF035X|0.51|0.46|0.40|0.35|0.30|0.27|0.24|0.22|0.18| |MF-NSMF050|0.76|0.68|0.59|0.50|0.44|0.40|0.35|0.32|0.26| |MF-NSMF075|1.11|1.00|0.85|0.75|0.67|0.61|0.52|0.50|0.42| |MF-NSMF110|1.64|1.46|1.30|1.10|0.92|0.83|0.80|0.65|0.52| |MF-NSMF125|1.84|1.66|1.47|1.25|1.11|1.02|0.91|0.82|0.69| |MF-NSMF150|2.20|1.99|1.77|1.50|1.34|1.23|1.10|1.01|0.84| |MF-NSMF175|2.52|2.28|1.99|1.75|1.57|1.45|1.32|1.21|1.04| |MF-NSMF200|2.88|2.61|2.28|2.00|1.80|1.66|1.51|1.39|1.19| ## ~~**How to Order**~~ ## **MF - NSMF 020 X - 2** Multifuse[®] Product Designator Series NSMF = 1206 Surface Mount Component Hold Current, Ihold 012-200 (0.12 Amps - 2.00 Amps) - Options __ = Standard X = Multifuse[®] freeXpansion Design[™] - Packaging -2 = Tape and Reel Packaged per EIA 481 ## ~~**Typical Part Marking**~~ Represents total content. Layout may vary. **==> picture [118 x 159] intentionally omitted <==** **----- Start of picture text -----**<br> STYLE 1 PART<br>IDENTIFICATION:<br>MF-NSMF012 = 0<br>MF-NSMF016 = 1<br>MF-NSMF020 = 2<br>0 MF-NSMF035 = 3MF-NSMF050 = 4<br>MF-NSMF075 = 5<br>MF-NSMF110 = 6<br>MF-NSMF125 = 7<br>MF-NSMF150 = 8<br>MF-NSMF175 = 9<br>MF-NSMF200 = A<br>STYLE 2 PART<br>IDENTIFICATION:<br>MF-NSMF020X = 2<br>MF-NSMF025X = C<br>2 MF-NSMF035X = 3<br>BIWEEKLY DATE CODE WILL APPEAR ON THE<br>PACKAGING LABEL:<br>WEEK 1 AND 2 = A<br>WEEK 51 AND 52 = Z<br>**----- End of picture text -----**<br> ## ~~**Packaging Quantity**~~ 3000 pcs. per reel 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-NSMF Series - PTC Resettable Fuses** ## ~~**Typical Time to Trip at 23 ˚C**~~ **==> picture [499 x 348] intentionally omitted <==** **----- Start of picture text -----**<br> 100.0000<br>A MF-NSMF012<br>B MF-NSMF016<br>B<br>D C MF-NSMF020<br>F<br>10.0000 E H M D MF-NSMF020X<br>E MF-NSMF025X<br>G I J F MF-NSMF035<br>K G MF-NSMF035X<br>C<br>N H MF-NSMF050<br>L I MF-NSMF075<br>1.0000 A<br>J MF-NSMF110<br>K MF-NSMF125<br>L MF-NSMF150<br>M MF-NSMF175<br>N MF-NSMF200<br>0.1000<br>0.0100<br>0.0010<br>0.10 1.00 10.00 100.00<br>Fault Current (Amps)<br>Time to Trip (Seconds)<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-NSMF Series - PTC Resettable Fuses** ## ~~**Product Dimensions**~~ **==> picture [484 x 170] intentionally omitted <==** **----- Start of picture text -----**<br> Style 1 Top and Bottom View Side View Terminal material: Recommended Pad Layout<br>A C Electroless Ni under immersion Au 1.0 ± 0.05 1.0 ± 0.05<br>(.039 ± .002) (.039 ± .002)<br>1.6 ± 0.1<br>B<br>(0.063 ± .004)<br>2.0 ± 0.1<br>D (.079 ± .004)<br>Style 2 Top View Bottom View Side View Recommended Pad Layout<br>A C<br>1.0 ± 0.05 1.0 ± 0.05<br>(.039 ± .002) (.039 ± .002)<br>2 B 1.6 ± 0.1<br>(0.063 ± .004)<br>D 2.0 ± 0.1<br>(.079 ± .004)<br>**----- End of picture text -----**<br> **==> picture [505 x 33] intentionally omitted <==** **----- Start of picture text -----**<br> A B C D<br>Model Style<br>Min. Max. Min. Max. Min. Max. Min.<br>**----- End of picture text -----**<br> |**Model**|**A**|**A**|**A**|**A**|**B**|**B**|**B**|**B**|**C**|**C**|**C**|**C**|**D**|**D**|**Style**| |---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---| ||**Min.**||**Max.**||**Min.**||**Max.**||**Min.**||**Max.**||**Min.**||| ||||||||||||||||| |MF-NSMF012||3.00<br>(0.118)||3.40<br>(0.134)||1.40<br>(0.055)||1.80<br>(0.071)||0.70<br>(0.028)||1.10<br>(0.043)||0.25<br>(0.010)|1| |MF-NSMF016||3.00<br>(0.118)||3.40<br>(0.134)||1.40<br>(0.055)||1.80<br>(0.071)||0.48<br>(0.019)||0.85<br>(0.033)||0.25<br>(0.010)|1| |MF-NSMF020||3.00<br>(0.118)||3.40<br>(0.134)||1.40<br>(0.055)||1.80<br>(0.071)||0.48<br>(0.019)||0.85<br>(0.033)||0.25<br>(0.010)|1| |MF-NSMF020X||3.00<br>(0.118)||3.40<br>(0.134)||1.40<br>(0.055)||1.80<br>(0.071)||0.40<br>(0.016)||0.85<br>(0.033)||0.25<br>(0.010)|2| |MF-NSMF025X||3.00<br>(0.118)||3.40<br>(0.134)||1.40<br>(0.055)||1.80<br>(0.071)||0.40<br>(0.016)||0.85<br>(0.033)||0.25<br>(0.010)|2| |MF-NSMF035||3.00<br>(0.118)||3.40<br>(0.134)||1.40<br>(0.055)||1.80<br>(0.071)||0.48<br>(0.019)||0.85<br>(0.033)||0.25<br>(0.010)|1| |MF-NSMF035X||3.00<br>(0.118)||3.40<br>(0.134)||1.40<br>(0.055)||1.80<br>(0.071)||0.40<br>(0.016)||0.85<br>(0.033)||0.25<br>(0.010)|2| |MF-NSMF050||3.00<br>(0.118)||3.40<br>(0.134)||1.40<br>(0.055)||1.80<br>(0.071)||0.48<br>(0.019)||0.85<br>(0.033)||0.25<br>(0.010)|1| |MF-NSMF075||3.00<br>(0.118)||3.40<br>(0.134)||1.40<br>(0.055)||1.80<br>(0.071)||0.40<br>(0.016)||0.70<br>(0.028)||0.25<br>(0.010)|1| |MF-NSMF110||3.00<br>(0.118)||3.40<br>(0.134)||1.40<br>(0.055)||1.80<br>(0.071)||0.40<br>(0.016)||0.70<br>(0.028)||0.25<br>(0.010)|1| |MF-NSMF125||3.00<br>(0.118)||3.40<br>(0.134)||1.40<br>(0.055)||1.80<br>(0.071)||0.40<br>(0.016)||0.70<br>(0.028)||0.25<br>(0.010)|1| |MF-NSMF150||3.00<br>(0.118)||3.40<br>(0.134)||1.40<br>(0.055)||1.80<br>(0.071)||0.40<br>(0.016)||0.70<br>(0.028)||0.25<br>(0.010)|1| |MF-NSMF175||3.00<br>(0.118)||3.50<br>(0.138)||1.40<br>(0.055)||1.80<br>(0.071)||0.70<br>(0.028)||1.60<br>(0.063)||0.25<br>(0.010)|1| |MF-NSMF200||3.00<br>(0.118)||3.50<br>(0.138)||1.40<br>(0.055)||1.80<br>(0.071)||0.70<br>(0.028)||1.60<br>(0.063)||0.25<br>(0.010)|1| |||||||||||||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-NSMF Series - PTC Resettable Fuses** ## ~~**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-NSMF 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. - not meet the published specifications. - - Excess solder may cause a short circuit. - Please refer to the Multifus ~~e~~[®] Polymer PTC Resettable Fuse Soldering Recommendations 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 (Tsto Ts) (ts)|150 °C<br>200 °C<br>60~180 seconds| |min max <br>TIME MAINTAINED ABOVE:<br>Temperature (TL)<br>Time (tL)|<br>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.| **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-NSMF Series Tape and Reel Specifications** |T<br>COVER<br>TAPE<br>B1<br>K 0<br>T1<br>D0|R<br>D0|R<br>D0|R<br>D0|R<br>D0|||||2<br>P 0|2<br>P 0|2<br>P 0|2<br>P 0||||||E1|E1|||||||14.4<br>(.57)<br>MAX.<br>50<br>(2.0) DIA. MIN.<br>8.4 +1.5/-0<br>(.331 +.059/-0)<br>(MEASURED<br>AT HUB)<br>(MEASURED<br>AT HUB)| |---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---| |||||||||P||||||||||||||||||| |||||||||||||||||||||185<br>(7.3)<br>MAX.||||||14.4<br>(.57)<br>MAX.<br>50<br>(2.0) DIA. MIN.<br>8.4 +1.5/-0<br>331 059/-0<br>(MEASURED<br>AT HUB)| |||||||||||||||||||||||||||| |||||||||||||||||||||||||||| |||||||||||||||||||||||||||| |||||||||||||||||||||||||||| |||||||||||||||||||||||||||| ||||||P1<br>A 0|||||||||||||||||||||| |||||||||||||||||||||||||||| |||||||||||||||||||||||||||| |**Tape Dimensions**<br>**per EIA-481**||**MF-NSMF012**|||||||**MF-NSMF016**<br>**MF-NSMF020**<br>**MF-NSMF035**<br>**MF-NSMF050**|||||||||**MF-NSMF075**|||**MF-NSMF110**<br>**MF-NSMF125**<br>**MF-NSMF150**<br>**MF-NSMF175**<br>**MF-NSMF200**|||**MF-NSMF020X**<br>**MF-NSMF025X**<br>**MF-NSMF035X**||| |W||||||||||||||||||8.00 ± 0.30<br>(.315 ± .012)||||||||| |P0||||||||||||||||||4.00 ± 0.10<br>(.157 ± .004)||||||||| |10 P0||||||||||||||||||40.0 ± 0.20<br>(1.575 ± .008)||||||||| |P1||||||||||||||||||4.00 ± 0.10<br>(.157 ± .004)||||||||| |P2||||||||||||||||||2.00 ± 0.05<br>(.079 ± .002)||||||||| |A0|||1.90 ± 0.10<br>(.075 ± .004)|||||||1.90 ± 0.10<br>(.075 ± .004)||||||||1.90 ± 0.10<br>(.075 ± .004)||||1.90 ± 0.10<br>(.075 ± .004)|||1.95 ± 0.10<br>(.077 ± .004)|| |B0|||3.50 ± 0.10<br>(.138 ± .004)|||||||3.45 ± 0.10<br>(.136 ± .004)||||||||3.50 ± 0.10<br>(.138 ± .004)||||3.45 ± 0.10<br>(.136 ± .004)|||3.55 ± 0.10<br>(.140 ± .004)|| |B1 max|||||||||||||||||||4.35<br>(.171)|||||||| |D0||||||||||||||||||1.50 +0.10/-0<br>(.059 +.004/-0)||||||||| |F||||||||||||||||||3.50 ± 0.05<br>(.138 ± .002)||||||||| |E1||||||||||||||||||1.75 ± 0.10<br>(.069 ± .004)||||||||| |E2typ|||||||||||||||||||6.25<br>(.246)|||||||| |T max|||||||||||||||||||0.60<br>(.024)|||||||| |T1max|||||||||||||||||||0.10<br>(.004)|||||||| |K0|||1.35 ± 0.10<br>(.053 ± .004)|||||||1.04 ± 0.10<br>(.041 ± .004)||||||||0.85 ± 0.10<br>(.033 ± .004)||||0.85 ± 0.10<br>(.033 ± .004)|||0.80 ± 0.15<br>(.031 ± .006)|| |Leader min.|||||||||||||||||||390<br>(15.4)|||||||| |Trailer min.|||||||||||||||||||160<br>(6.3)|||||||| MM DIMENSIONS: (INCHES) MF-NSMF SERIES, REV. Z, 05/21 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_
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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