Image not available
Illustrative purposes only
MF-USMF175X-2
SMD FUSES
⚠️ 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 / PARTNER STOCK
- Product type: SMD Fuses
- SVHC: No SVHC (04-Feb-2026)
| Delivery and price | |
|---|---|
| Units per pack | 750 |
| Price | 0.235 € |
| Current stock | 1000+ |
| Lead time | 30 days |
Datasheet
**==> picture [45 x 13] intentionally omitted <==** **----- Start of picture text -----**<br> AUTOMOTIVE<br>GRADE<br>**----- End of picture text -----**<br> ## **Features** ■ Compliant with AEC-Q200 Rev-D Stress ■ RoHS compliant* and halogen free** Test Qualification for Passive Components ■ Agency recognition: in Automotive Applications - Fast tripping resettable circuit protection - Surface mount packaging for automated assembly - ■ Small footprint size (1210) ## **MF-USMF Series - PTC Resettable Fuses** BOURNS --- ## ~~**Electrical Characteristics**~~ |**Model**<br>~~|~~<br>~~a~~|**Vmax.**<br>~~a~~|**Imax.**<br>~~a ee~~|**Ihold**|**Itrip**|**Resistance**|**Resistance**|**Max. Time to**<br>**Trip**|**Max. Time to**<br>**Trip**|**Tripped**<br>**Power**<br>**Dissipation**|**Agency Recognition**|**Agency Recognition**|**AEC-Q200**<br>**Compliance**<br>~~[|~~| |---|---|---|---|---|---|---|---|---|---|---|---|---| ||||**at 23 °C**<br>~~ee~~||**Ohms at 23 °C**<br>~~eeee~~||**at 23 °C**<br>~~eeee~~||**Typ. at 23 °C**<br>~~es~~|**cUL**<br>~~es~~|**TÜV**|| ||**Volts**<br>~~a~~<br>||**Amps**<br>~~a ee~~<br>||**Amps**<br>~~ee~~<br>~~[|~~<br>|||**Rmin**<br>~~ee~~<br>~~|~~|**R1max**<br>~~ee~~<br>~~|~~|**Amps**<br>~~ee~~<br>~~[|~~|**Sec.**<br>~~ee~~<br>~~[|[|~~|**Watts**<br>~~es~~<br>~~[|~~<br>~~[~~|E174545<br>~~es~~<br>~~[~~|R50256634<br>~~[|~~|| |MF-USMF005<br>~~|~~<br>~~a~~|30<br>~~a ~~<br>||10<br> ~~a ee~~<br>||0.05<br>~~ee~~<br>~~[|~~|0.15<br>~~ee~~<br>~~[|~~<br>||2.80<br>~~ee ~~<br>~~|~~|50.00<br> ~~ee~~<br>~~|~~|0.25<br>~~ee ~~<br>~~[|~~|1.50<br> ~~ee~~<br>~~[|[|~~|0.6<br>~~es~~<br>~~[|~~<br>~~[~~|✓<br>~~es~~<br>~~[~~|✓<br>~~[|~~|✓<br>~~[|~~| |MF-USMF010<br>~~a~~|30<br>||10<br>||0.10<br>~~[|~~|0.30<br>~~[|~~<br>||0.80<br>~~|~~|15.00<br>~~|~~|0.50<br>~~[|~~|0.60<br>~~[| [|~~|0.6<br>~~[|~~<br>~~[~~|✓<br>~~[ ~~|✓<br> ~~[|~~|✓<br>~~[|~~| |MF-USMF020<br>~~a~~|30|10|0.20|0.40|0.40|5.00|8.00|0.02|0.6|✓|✓|✓| |MF-USMF035<br>~~a~~|6|40|0.35|0.75|0.20|1.30|8.00|0.20|0.6|✓|✓|| |MF-USMF050<br>~~a~~|13.2|40|0.50|1.00|0.18|0.90|8.00|0.10|0.6|✓|✓|✓| |MF-USMF075<br>~~a~~|6|40|0.75|1.50|0.07|0.45|8.00|0.10|0.6|✓|✓|| |MF-USMF110<br>~~a~~|6|40|1.10|2.20|0.05|0.21|5.00|1.00|0.6|✓|✓|| |MF-USMF150<br>~~a~~|6|40|1.50|3.00|0.03|0.11|5.00|5.00|0.6|✓|✓|| |MF-USMF175<br>~~a~~|6|40|1.75|3.50|0.02|0.09|8.00|1.00|0.7|✓|✓|| |MF-USMF175X<br>~~a~~|6|40|1.75|3.50|0.02|0.08|8.00|1.00|0.7|✓|✓|| |MF-USMF200X<br>~~a~~|6|40|2.00|4.00|0.02|0.08|8.00|1.00|0.7|✓|✓|| ## ~~**Environmental Characteristics**~~ |**Item**|**Condition**|**Criteria**| |---|---|---| |Operating Temperature|-40 °C to +85 °C|| |Recommended Storage|+40 °C max. / 70 % R.H. max.|| |Passive Aging|+85 °C, 1000 hours|±5 % typical resistance<br>change| |Humidity Aging|+85 °C, 85 % R.H. 1000 hours|±5 % typical resistance<br>change| |Thermal Shock|-40 °C to +85 °C, 20 times|±10 % typical resistance<br>change| |Solvent Resistance|MIL-STD-202, Method 215|No change<br>(marking still legible)| |Vibration|MIL-STD-883C, Method 2007.1<br>Condition A|No change<br>(Rmin< R < R1max)| |Moisture Sensitivity Level<br>(MSL)|See Note|| |ESD Classification|Class 6 (per AEC-Q200-2, HBM)|| ## ~~**Additional Information**~~ Click these links for more information: PRODUCT TECHNICAL INVENTORY SAMPLES CONTACT SELECTOR LIBRARY **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** > * 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 **Applications** ■ Game consoles ■ IEEE 1394 ports ■ PC motherboards ■ Mobile phones ■ USB port protection - USB 2.0, 3.0 & OTG ■ HDMI 1.4 Source protection ■ Digital cameras ## **MF-USMF 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|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|245 °C ± 5 °C, 5 seconds|95 % min. coverage| ## ~~**Product Dimensions**~~ **==> picture [505 x 33] intentionally omitted <==** **----- Start of picture text -----**<br> A B C D<br>Model<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**|**D**| |---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---| ||**Min.**||**Max.**||**Min.**||**Max.**||**Min.**||**Max.**||**Min.**||| ||||||||||||||||| |MF-USMF005||3.00<br>(0.118)||3.43<br>(0.135)||2.35<br>(0.093)||2.80<br>(0.110)||0.80<br>(0.031)||1.1<br>(0.043)||0.30<br>(0.012)|| |MF-USMF010||3.00<br>(0.118)||3.43<br>(0.135)||2.35<br>(0.093)||2.80<br>(0.110)||0.80<br>(0.031)||1.1<br>(0.043)||0.30<br>(0.012)|| |MF-USMF020||3.00<br>(0.118)||3.43<br>(0.135)||2.35<br>(0.093)||2.80<br>(0.110)||0.80<br>(0.031)||1.1<br>(0.043)||0.30<br>(0.012)|| |MF-USMF035||3.00<br>(0.118)||3.43<br>(0.135)||2.35<br>(0.093)||2.80<br>(0.110)||0.55<br>(0.022)||0.85<br>(0.033)||0.30<br>(0.012)|| |MF-USMF050||3.00<br>(0.118)||3.43<br>(0.135)||2.35<br>(0.093)||2.80<br>(0.110)||0.55<br>(0.022)||0.85<br>(0.033)||0.30<br>(0.012)|| |MF-USMF075||3.00<br>(0.118)||3.43<br>(0.135)||2.35<br>(0.093)||2.80<br>(0.110)||0.55<br>(0.022)||0.85<br>(0.033)||0.30<br>(0.012)|| |MF-USMF110||3.00<br>(0.118)||3.43<br>(0.135)||2.35<br>(0.093)||2.80<br>(0.110)||0.55<br>(0.022)||0.85<br>(0.033)||0.30<br>(0.012)|| |MF-USMF150||3.00<br>(0.118)||3.43<br>(0.135)||2.35<br>(0.093)||2.80<br>(0.110)||0.40<br>(0.016)||0.85<br>(0.033)||0.30<br>(0.012)|| |MF-USMF175||3.00<br>(0.118)||3.43<br>(0.135)||2.35<br>(0.093)||2.80<br>(0.110)||0.40<br>(0.016)||0.85<br>(0.033)||0.30<br>(0.012)|| |MF-USMF175X||3.00<br>(0.118)||3.43<br>(0.135)||2.35<br>(0.093)||2.80<br>(0.110)||0.40<br>(0.016)||0.85<br>(0.033)||0.30<br>(0.012)|| |MF-USMF200X||3.00<br>(0.118)||3.43<br>(0.135)||2.35<br>(0.093)||2.80<br>(0.110)||0.40<br>(0.016)||0.85<br>(0.033)||0.30<br>(0.012)|| |||||||||||||DIMENSIONS:|||MM<br>(INCHES)| **==> picture [283 x 92] intentionally omitted <==** **----- Start of picture text -----**<br> Top and Bottom View Side View Terminal material:<br>Electroless Ni under immersion Au<br>A C<br>Packaging Quantity<br>B 3000 pcs. per reel<br>D<br>**----- End of picture text -----**<br> **==> picture [140 x 79] intentionally omitted <==** **----- Start of picture text -----**<br> Recommended Pad Layout<br>1.0 ± 0.05 1.0 ± 0.05<br>(.039 ± .002) (.039 ± .002)<br>2.5 ± 0.1<br>(.098 ± .004)<br>2.0 ± 0.1<br>(.079 ± .004)<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-USMF Series - PTC Resettable Fuses** ## ~~**Solder Reflow Recommendations**~~ |TP<br>TL<br>25<br>Ts max<br>Ts min<br>**Temperature**||||tp||TP<br>T<br>TO<br>L<br> <br>CRITICAL ZONE<br>RAMP-DOWN|TP<br>T<br>TO<br>L<br> <br>CRITICAL ZONE<br>RAMP-DOWN| |---|---|---|---|---|---|---|---| ||||||||| |||RAMP-UP|||t L||| ||||||||| ||||||||| ||||||||| ||||||||| ||||||||| |||**Time**<br>t 25 °C TO PEAK|||||| ||||||||| ||||||||| ||||||||| ||||||||| |||**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.| 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-USMF Series - PTC Resettable Fuses** ## ~~**Thermal Derating Table - Ihold (Amps)**~~ **==> picture [507 x 33] 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-USMF005|0.08|0.07|0.06|0.05|0.04|0.04|0.03|0.03|0.02| |MF-USMF010|0.15|0.13|0.12|0.10|0.09|0.08|0.07|0.06|0.05| |MF-USMF020|0.32|0.28|0.24|0.20|0.18|0.16|0.14|0.12|0.10| |MF-USMF035|0.51|0.46|0.40|0.35|0.30|0.27|0.24|0.22|0.18| |MF-USMF050|0.76|0.66|0.58|0.50|0.42|0.38|0.35|0.29|0.26| |MF-USMF075|1.10|0.97|0.86|0.75|0.64|0.58|0.55|0.47|0.39| |MF-USMF110|1.60|1.42|1.26|1.10|0.94|0.86|0.80|0.70|0.58| |MF-USMF150|2.30|2.02|1.76|1.50|1.24|1.11|1.00|0.85|0.65| |MF-USMF175|2.80|2.45|2.10|1.75|1.55|1.45|1.35|1.25|1.10| |MF-USMF175X|2.80|2.45|2.10|1.75|1.55|1.45|1.35|1.25|1.10| |MF-USMF200X|3.06|2.68|2.32|2.00|1.78|1.58|1.48|1.38|1.22| ## ~~**How to Order**~~ **MF - USMF 010 X - 2** Multifuse[®] Product Designator Series USMF = 1210 Surface Mount Component Hold Current, Ihold 005-200 (0.05-2.00 Amps) Multifuse[®] freeXpansion[™] Design Packaging -2 = Tape and Reel packaged per EIA 481-1 ## ~~**Typical Part Marking**~~ Represents total content. Layout may vary. PART IDENTIFICATION: MF-USMF005 = 0 MF-USMF010 = 1 MF-USMF020 = 2 MF-USMF035 = 3 **6** MF-USMF050 = 4 **A** MF-USMF075 = 5 MF-USMF110 = 6 MF-USMF150 = 8 MF-USMF175 = 9 MF-USMF175X = 9 MF-USMF200X = A BIWEEKLY DATE CODE: WEEK 1 AND 2 = A WEEK 51 AND 52 = Z 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-USMF Series - PTC Resettable Fuses** ~~**Typical Time to Trip at 23 ˚C**~~ **==> picture [494 x 348] intentionally omitted <==** **----- Start of picture text -----**<br> 100<br>A MF-USMF005<br>K<br>B MF-USMF010<br>J<br>C MF-USMF020<br>I<br>10 C D E F G H D MF-USMF035<br>E MF-USMF050<br>B F MF-USMF075<br>G MF-USMF110<br>H MF-USMF150<br>I MF-USMF175<br>1 A<br>J MF-USMF175X<br>K MF-USMF200X<br>0.1<br>0.01<br>0.001<br>0.1 1 10 100<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-USMF Series Tape and Reel Specifications** |**Tape Dimensions**|**Tape Dimensions**|||||||||||||||**MF-USMF005 ~ MF-USMF110**<br>**per EIA-481**<br>**MF-USMF150 ~ MF-USMF200X**<br>**per EIA-481**|**MF-USMF005 ~ MF-USMF110**<br>**per EIA-481**<br>**MF-USMF150 ~ MF-USMF200X**<br>**per EIA-481**|**MF-USMF005 ~ MF-USMF110**<br>**per EIA-481**<br>**MF-USMF150 ~ MF-USMF200X**<br>**per EIA-481**|**MF-USMF005 ~ MF-USMF110**<br>**per EIA-481**<br>**MF-USMF150 ~ MF-USMF200X**<br>**per EIA-481**|**MF-USMF005 ~ MF-USMF110**<br>**per EIA-481**<br>**MF-USMF150 ~ MF-USMF200X**<br>**per EIA-481**|**MF-USMF005 ~ MF-USMF110**<br>**per EIA-481**<br>**MF-USMF150 ~ MF-USMF200X**<br>**per EIA-481**|**MF-USMF005 ~ MF-USMF110**<br>**per EIA-481**<br>**MF-USMF150 ~ MF-USMF200X**<br>**per EIA-481**|**MF-USMF005 ~ MF-USMF110**<br>**per EIA-481**<br>**MF-USMF150 ~ MF-USMF200X**<br>**per EIA-481**|**MF-USMF005 ~ MF-USMF110**<br>**per EIA-481**<br>**MF-USMF150 ~ MF-USMF200X**<br>**per EIA-481**|**MF-USMF005 ~ MF-USMF110**<br>**per EIA-481**<br>**MF-USMF150 ~ MF-USMF200X**<br>**per EIA-481**|**MF-USMF005 ~ MF-USMF110**<br>**per EIA-481**<br>**MF-USMF150 ~ MF-USMF200X**<br>**per EIA-481**| |---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---| |W|||||||||||||||||8.0 ± 0.3<br>(.315 ± .012)|||||8.0 ± 0.3<br>(.315 ± .012)||||| |P0|||||||||||||||||4.0 ± 0.1<br>(.157 ± .004)|||||4.0 ± 0.1<br>(.157 ± .004)||||| |P1|||||||||||||||||4.0 ± 0.1<br>(.157 ± .004)|||||4.0 ± 0.1<br>(.157 ± .004)||||| |P2|||||||||||||||||2.0 ± 0.05<br>(.079 ± .002)|||||2.0 ± 0.05<br>(.079 ± .002)||||| |A0|||||||||||||||||2.86 ± 0.10<br>(.113 ± .004)|||||3.00 ± 0.10<br>(.118 ± .004)||||| |B0|||||||||||||||||3.50 ± 0.10<br>(.138 ± .004)|||||3.65 ± 0.10<br>(.144 ± .004)||||| |B1max.||||||||||||||||||4.35<br>(.171)|||||4.35<br>(.171)|||| |D0|||||||||||||||||1.5 +0.1/-0<br>(.059 +.004/-0)|||||1.5 +0.1/-0||||| ||||||||||||||||||||||(.059 +.004/-0)|||||| |F|||||||||||||||||3.5 ± 0.05<br>(.138 ± .002)|||||3.5 ± 0.05<br>(.138 ± .002)||||| |E1|||||||||||||||||1.75 ± 0.10<br>(.069 ± .004)|||||1.75 ± 0.10<br>(.069 ± .004)||||| |E2min.||||||||||||||||||6.25<br>(.246)|||||6.25<br>(.246)|||| |T max.||||||||||||||||||0.6<br>(.024)|||||0.6<br>(.024)|||| |T1max.||||||||||||||||||0.1<br>(.004)|||||0.1<br>(.004)|||| |K0|||||||||||||||||1.07 ± 0.10<br>(.042 ± .004)|||||0.85 ± 0.10<br>(.033 ± .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.||||||||||||||||||185<br>(7.283)|||||185<br>(7.283)|||| |N min.||||||||||||||||||50<br>(1.97)|||||50<br>(1.97)|||| |W1|||||||||||||||||8.4 +1.5/-0<br>(.331 +.059/-0)|||||8.4 +1.5/-0||||| ||||||||||||||||||||||(.331 +.059/-0)|||||| |W2max.||||||||||||||||||14.4<br>(.567)|||||14.4<br>(.567)|||| |T<br>COVER<br>TAPE<br>B1<br>K0<br>T1|||||||||||||||||W||||DIMENSIONS:<br>MM<br>(INCHES)<br>(MEASURED<br>AT HUB)<br>W2<br>N(HUB DIA.)<br>(MEASURED<br>AT HUB)<br>W1|||||| ||R<br>|D0|||||||P2<br>P0|||||||E1||||||||||| ||||||||||||||||||||A||||||W2<br>N<br>W|| |||||||||||||||||||||||||||| ||||||||||||||||||W|||||||||| |||||||||||||||||||||||||||| |||||||||||||||||||||||||||| |||||||||||||||||||||||||||| |||||||||||||||||||||||||||| |||||||||||||||||||||||||||| |||||||A0||P1||||||||||||||||||| |||||||||||||||||||||||||||| MF-USMF SERIES, REV. S, 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 9, 2026
About Novapart
Novapart is a B2B electronic component broker specialising in stock shortages and cost reduction. We source hard-to-find parts and identify compliant alternatives across a catalogue of 410,000+ components from 500+ manufacturers.
Learn more →Stock Shortage Specialist
When a component is unavailable, discontinued or has an unacceptable lead time, we tap into our network of vetted European and Asian distributors to source what you need — without compromising on quality or traceability.
Request a quote →Compliant Alternatives
We identify pin-to-pin, electrically equivalent substitutes that meet the same certifications (RoHS, AEC-Q100, REACH) as your original specification — validated against datasheets, not just part numbers. Often at a lower cost.
BOM Analysis service →