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MF-RHS450-0
Resettable Fuse, PPTC, MF-RHS Series, 16 V, 4.5 A, 9 A, 5.5 s, Rectangular
⚠️ 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: Radial Leaded PPTCs
- SVHC: No SVHC (04-Feb-2026)
- Height: 18.9mm
- Length: 8.4mm
- Diameter: -
- Thickness: 3mm
- Fuse Shape: Rectangular
- Lead Spacing: 5.1mm
- Time to Trip: 5.5s
- Trip Current: 9A
- Voltage Rating: 16V
- Holding Current: 4.5A
- Current Rating Max: 100A
- Operating Temperature Max: 125°C
- Operating Temperature Min: -40°C
- Automotive Qualification Standard: -
| Delivery and price | |
|---|---|
| Units per pack | 1000 |
| Price | 0.305 € |
| Current stock | 200+ |
| Lead time | 30 days |
Datasheet
**MF-RHS Series - High Temperature PPTC Resettable Fuses** POURNS ~~i~~ ~~**Electrical Characteristics**~~ **==> picture [48 x 50] intentionally omitted <==** **----- Start of picture text -----**<br> &<br>RoHS COMPLIANT*<br>HALOGEN FREE**<br>**----- End of picture text -----**<br> **Features** n Operating temperature range up to 125 °C n Low thermal derating factor n Higher hold currents at elevated temperatures n RoHS compliant* and halogen free** n Agency recognition: ck us n Higher hold currents at elevated temperatures |**Model**<br>**Vmax**<br>**Imax**<br>**Ihold**<br>**Itrip**<br>**Resistance**<br>**Max. Time to Trip**<br>**Tripped**<br>**Power**<br>**Dissipation**<br>**Agency**<br>**Recognition**<br>**at 23 °C**<br>**at 23 °C**<br>**(Ohms)**<br>**at 23 °C**<br>**at 23 °C**<br>**(Watts)**<br>**cUL**<br>**Volts**<br>**Amps**<br>**Amps**<br>**Rmin**<br>**R1Max.*****<br>**Amps**<br>**Seconds**<br>**Typ.**<br>E174545<br>MF-RHS350<br>16<br>100<br>3.5<br>7.0<br>0.018<br>0.050<br>17.5<br>4.5<br>3.0<br>3<br>MF-RHS400<br>4.0<br>8.0<br>0.016<br>0.044<br>20.0<br>5.0<br>3.0<br>3<br>MF-RHS450<br>4.5<br>9.0<br>0.0145<br>0.040<br>22.5<br>5.5<br>3.0<br>3<br>MF-RHS500<br>5.0<br>10.0<br>0.0135<br>0.038<br>25.0<br>5.8<br>3.0<br>3<br>MF-RHS550<br>5.5<br>11.0<br>0.0120<br>0.032<br>27.5<br>10.0<br>3.0<br>3<br>MF-RHS600<br>6.0<br>12.0<br>0.0090<br>0.0252<br>30.0<br>6.5<br>3.3<br>3<br>MF-RHS650<br>6.5<br>13.0<br>0.0095<br>0.0225<br>32.5<br>6.5<br>3.3<br>3<br>MF-RHS700<br>7.0<br>14.0<br>0.0085<br>0.0190<br>35.0<br>6.8<br>3.7<br>3<br>MF-RHS750<br>7.5<br>15.0<br>0.0073<br>0.0168<br>37.5<br>7.0<br>4.0<br>3<br>MF-RHS800<br>8.0<br>16.0<br>0.0060<br>0.0145<br>40.0<br>8.0<br>4.3<br>3<br>MF-RHS900<br>9.0<br>18.0<br>0.0046<br>0.0098<br>45.0<br>9.0<br>5.0<br>3<br>MF-RHS1000<br>10.0<br>20.0<br>0.0042<br>0.0090<br>50.0<br>10.0<br>5.4<br>3<br>MF-RHS1100<br>11.0<br>22.0<br>0.0038<br>0.0083<br>55.0<br>11.2<br>5.7<br>3<br>MF-RHS1200<br>12.0<br>24.0<br>0.0035<br>0.0077<br>60.0<br>12.5<br>6.0<br>3<br>MF-RHS1300<br>13.0<br>26.0<br>0.0033<br>0.0070<br>60.0<br>14.0<br>6.4<br>3<br>***R1max: measured 1 hour post reflow.<br>~~SS~~<br>~~|~~<br>~~a~~<br>~~|~~<br>~~ee~~<br>~~|~~<br>~~a~~<br>~~|~~<br>~~ee~~<br>~~|~~<br>~~a~~<br>~~|~~<br>~~ee~~<br>~~|~~<br>~~a~~<br>~~|~~<br>~~ee~~<br>~~|~~<br>~~a~~<br>~~|~~<br>~~ee~~<br>~~|~~<br>~~a~~<br>~~|~~<br>~~ee~~<br>~~|~~<br>~~a~~<br>~~|~~<br>~~ee~~<br>~~|~~<br>~~a~~| |---| |~~**Additional Information**~~<br>~~**Environmental Characteristics**~~| |Click these links for more information:<br>PRODUCT<br>SELECTOR<br>TECHNICAL<br>LIBRARY<br>INVENTORY<br>SAMPLES<br>CONTACT<br>**Item**<br>**Condition**<br>**Criteria**<br>Operating Temperature<br>-40 °C to +125 °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 +125 °C, 10 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.<br>** Bourns considers a product to be “halogen free” if<br>(a) the Bromine (Br) content is 900 ppm or less; (b)<br>the Chlorine (Cl) content is 900 ppm or less; and (c)<br>the total Bromine (Br) and Chlorine (Cl) content is<br>1500 ppm or less.<br>Specifications are subject to change without notice.<br>Users should verify actual device performance in their<br>specific applications. The products described herein and<br>this document are subject to specific legal disclaimers as<br>set forth on the last page of this document, and at<br>www.bourns.com/docs/legal/disclaimer.pdf.<br>**WARNING**<br>**Cancer and Reproductive Harm**<br>www.P65Warnings.ca.gov<br>~~===~~| **Applications** n DC motors ## n Servers and data centers n HVAC (heating, ventilation and cooling) protection in motors, air-flow detection and I/O ## **MF-RHS Series - High Temperature PPTC 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> |**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|245 °C ± 5 °C, 5 seconds|95 % min. coverage| ## ~~**Thermal Derating Table - Ihold (Amps)**~~ **==> picture [505 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 125 ° 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**|**Ambient Operating Temperature**| |---|---|---|---|---|---|---|---|---|---|---| ||**-40**°**C**|**-20**°**C**|**0**°**C**|**23**°**C**|**40**°**C**|**50**°**C**|**60**°**C**|**70**°**C**|**85**°**C**|**125**°**C**| |||||||||||| |MF-RHS350|4.8|4.5|4.1|3.5|3.2|3.0|2.8|2.5|2.1|1.0| |MF-RHS400|5.2|4.9|4.5|4.0|3.5|3.3|3.0|2.6|2.2|1.0| |MF-RHS450|5.4|5.2|5.0|4.5|3.8|3.5|3.2|2.9|2.4|1.1| |MF-RHS500|6.3|6.0|5.7|5.0|4.7|4.4|4.0|3.8|3.3|1.5| |MF-RHS550|8.1|7.2|6.2|5.5|5.1|4.8|4.3|4.0|3.5|1.7| |MF-RHS600|8.6|7.7|6.6|6.0|5.5|5.2|4.8|4.4|3.8|1.8| |MF-RHS650|9.0|8.1|7.2|6.5|6.0|5.5|5.1|4.7|4.1|1.9| |MF-RHS700|9.4|8.6|7.9|7.0|6.4|5.8|5.4|4.9|4.4|2.0| |MF-RHS750|9.9|9.1|8.4|7.5|6.7|6.1|5.8|5.2|4.6|2.2| |MF-RHS800|11.2|9.7|8.9|8.0|7.1|6.5|6.3|5.8|4.8|2.6| |MF-RHS900|13.1|11.4|10.3|9.0|8.4|7.8|7.4|6.6|5.9|3.1| |MF-RHS1000|15.0|13.1|11.2|10.0|9.4|8.8|8.1|7.6|6.8|3.5| |MF-RHS1100|15.7|13.8|12.2|11.0|10.0|9.2|8.4|7.9|7.1|3.6| |MF-RHS1200|16.3|14.6|12.9|12.0|10.5|9.6|8.9|8.2|7.3|3.8| |MF-RHS1300|16.8|15.4|14.0|13.0|11.5|10.3|9.4|8.5|7.5|3.9| 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-RHS Series - High Temperature PPTC Resettable Fuses** ~~**How to Order**~~ **MF - RHS 750 - 2 - 14** Multifuse[®] Product Designator Series RHS = High Temperature Radial Leaded Component Hold Current, Ihold 350 - 1300 (3.50 - 13.0 Amps) Packaging Options - 0 = Bulk Packaging - 2 = Tape & Reel* - AP = Ammo-Pak* Part Number Suffix Option - 14 = Kinked leads where straight leads are standard *Packaged per EIA-468 ## ~~**Typical Part Marking**~~ Represents total content. Layout may vary. **==> picture [144 x 79] intentionally omitted <==** **----- Start of picture text -----**<br> MANUFACTURER'S<br>TRADEMARK<br>PART<br>IDENTIFICATION<br>RS750<br>3034<br>DATE CODE<br>(FIRST DIGIT =<br>LAST DIGIT OF YEAR;<br>NEXT THREE DIGITS =<br>DAY OF YEAR)<br>EXAMPLE: 3034 = 2023 DAY 34<br>**----- End of picture text -----**<br> ## ~~**Packaging Quantity**~~ **==> picture [330 x 18] intentionally omitted <==** **----- Start of picture text -----**<br> Packaging options Models Unit Quantity (Pcs.) Unit<br>**----- End of picture text -----**<br> |**Packaging options**|**Models**|**Unit Quantity (Pcs.)**|**Unit**| |---|---|---|---| ||||| |Bulk|All models|500|Bag| |Tape & Reel|MF-RHS350, MF-RHS400,<br>MF-RHS450, MF-RHS500,<br>MF-RHS550, MF-RHS600,<br>MF-RHS650|3000|Reel| ||MF-RHS700, MF-RHS750,<br>MF-RHS800, MF-RHS900,<br>MF-RHS1000|1500|| ||MF-RHS1100, MF-RHS1200,<br>MF-RHS1300|1000|| |Ammo-Pack|MF-RHS350, MF-RHS400,<br>MF-RHS450, MF-RHS500,<br>MF-RHS550, MF-RHS600,<br>MF-RHS650|2000|Box| ||MF-RHS700, MF-RHS750,<br>MF-RHS800, MF-RHS900,<br>MF-RHS1000|1000|| ||MF-RHS1100, MF-RHS1200,<br>MF-RHS1300|500|| 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-RHS Series - High Temperature PPTC Resettable Fuses** **==> picture [516 x 315] intentionally omitted <==** **----- Start of picture text -----**<br> Typical Time to Trip at 23 ˚C<br>100 MF-RHS350<br>MF-RHS400<br>MF-RHS450<br>MF-RHS500<br>MF-RHS550<br>MF-RHS600<br>MF-RHS650<br>MF-RHS700<br>MF-RHS750<br>10 MF-RHS800<br>MF-RHS900<br>MF-RHS1000<br>MF-RHS1100<br>MF-RHS1200<br>MF-RHS1300<br>1<br>0.1<br>0 10 20 30 40 50 60<br>Fault Current (Amps)<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-RHS Series - High Temperature PPTC Resettable Fuses** ## ~~**Product Dimensions**~~ **==> picture [507 x 503] intentionally omitted <==** **----- Start of picture text -----**<br> A B C D E F Physical Characteristics<br>Model<br>Max. Max. Nom. Tol. ± Min. Max. Nom. Style Material<br>8.40 16.9 5.1 0.7 7.6 3.0 0.81<br>MF-RHS350 2 Sn/Cu<br>(0.331) (0.665) (0.201) (0.028) (0.299) (0.118) (0.032)<br>8.40 17.9 5.1 0.7 7.6 3.0 0.81<br>MF-RHS400 2 Sn/Cu<br>(0.331) (0.705) (0.201) (0.028) (0.299) (0.118) (0.032)<br>8.40 18.9 5.1 0.7 7.6 3.0 0.81<br>MF-RHS450 2 Sn/Cu<br>(0.331) (0.744) (0.201) (0.028) (0.299) (0.118) (0.032)<br>9.20 19.2 5.1 0.7 7.6 3.0 0.81<br>MF-RHS500 2 Sn/Cu<br>(0.362) (0.756) (0.201) (0.028) (0.299) (0.118) (0.032)<br>9.30 19.5 5.1 0.7 7.6 3.0 0.81<br>MF-RHS550 2 Sn/Cu<br>(0.366) (0.768) (0.201) (0.028) (0.299) (0.118) (0.032)<br>8.75 22.4 5.1 0.7 7.6 3.0 0.81<br>MF-RHS600 2 Sn/Cu<br>(0.344) (0.882) (0.201) (0.028) (0.299) (0.118) (0.032)<br>10.70 23.2 5.1 0.7 7.6 3.0 0.81<br>MF-RHS650 2 Sn/Cu<br>(0.421) (0.913) (0.201) (0.028) (0.299) (0.118) (0.032)<br>11.80 23.3 5.1 0.7 7.6 3.0 0.81<br>MF-RHS700 2 Sn/Cu<br>(0.465) (0.917) (0.201) (0.028) (0.299) (0.118) (0.032)<br>11.80 24.3 5.1 0.7 7.6 3.0 0.81<br>MF-RHS750 2 Sn/Cu<br>(0.465) (0.957) (0.201) (0.028) (0.299) (0.118) (0.032)<br>12.80 24.7 5.1 0.7 7.6 3.6 1.00<br>MF-RHS800 2 Sn/Cu<br>(0.504) (0.972) (0.201) (0.028) (0.299) (0.142) (0.039)<br>14.40 24.9 10.2 0.7 7.6 3.6 1.00<br>MF-RHS900 2 Sn/Cu<br>(0.567) (0.980) (0.402) (0.028) (0.299) (0.142) (0.039)<br>14.40 27.9 10.2 0.7 7.6 3.6 1.00<br>MF-RHS1000 2 Sn/Cu<br>(0.567) (1.098) (0.402) (0.028) (0.299) (0.142) (0.039)<br>17.40 27.9 10.2 0.7 7.6 3.6 1.00<br>MF-RHS1100 2 Sn/Cu<br>(0.685) (1.098) (0.402) (0.028) (0.299) (0.142) (0.039)<br>17.40 27.9 10.2 0.7 7.6 3.6 1.00<br>MF-RHS1200 2 Sn/Cu<br>(0.685) (1.098) (0.402) (0.028) (0.299) (0.142) (0.039)<br>17.40 28.9 10.2 0.7 7.6 3.6 1.00<br>MF-RHS1300 2 Sn/Cu<br>(0.685) (1.138) (0.402) (0.028) (0.299) (0.142) (0.039)<br>MM<br>DIMENSIONS:<br>(INCHES) A E A E Als o av ai labl e with kinke d leads in place of<br>standard lea d s (S t yle 1).<br>(see How to Order).<br>B B<br>D<br>D<br>C F C F<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-RHS Series Tape and Reel Specifications** Devices taped using EIA-468/IEC 60286-2 standards. See table below and figures for details. |Devices taped using EIA-468/IEC 60286-2 standards. See table below and figures for details.|Devices taped using EIA-468/IEC 60286-2 standards. See table below and figures for details.|Devices taped using EIA-468/IEC 60286-2 standards. See table below and figures for details.|||| |---|---|---|---|---|---| |**Dimension Description**<br>**IEC**<br>**Mark**<br>**EIA**<br>**Mark**<br>**Dimensions**|||**Tolerance**||| |Carrier tape width<br>_W_<br>_W_||18<br>(.709)|+1.0/-0.5<br>(+.039/-.020)||| |Hold down tape width<br>_W0_<br>_W0_||11<br>(.433)|min.||| |Hold down tape<br>No protrusion|||||| |Adhesive tape position<br>_W2_<br>_W2_||3<br>(.118)|max.||| |Sprocket hole position<br>_W1_<br>_W1_||9<br>(.354)|+0.75-0.5<br>(+.030/-.020)||| |Sprocket hole diameter<br>_D0_<br>_D0_||4<br>(.157)||±0.2<br>(±.0078)|| |Height to seating plane (straight lead)<br>_H_<br>_H_|18~20<br>(.709 ~ .787)||||| |Height to seating plane (formed lead)<br>_H0_<br>_H0_||16<br>(.630)||±0.5<br>(±.020)|| |Overall height above abscissa: MF-RHS350 ~ MF-RHS650<br>_H1_<br>_H1_||38.5<br>(1.516)||max.|| |Overall height above abscissa: MF-RHS700 ~ MF-RHS1300<br>_H1_<br>_H1_||45.0<br>(1.772)||max.|| |Cutout length<br>_L_||11<br>(.433)||max.|| |Sprocket hole pitch<br>_P0_<br>_P0_||12.7<br>(.500)||±0.3<br>(±.012)|| |Device pitch: MF-RHS350 ~ MF-RHS650<br>_P_<br>_P_||12.7<br>(0.50)||±0.3<br>(±.012)|| |Device pitch: MF-RHS700 ~ MF-RHS1300<br>_P_<br>_P_||25.4<br>(1.00)||±0.6<br>(±.024)|| |Pitch tolerance<br>20 consecutive||||±1<br>(±.039)|| |Composite tape thickness<br>_t_<br>_t_||0.9<br>(.035)||max.|| |Overall tape and lead thickness<br>_t1_<br>_t1_||2.3<br>(.091)||max.|| |Splice sprocket hole alignment||0||±0.3<br>(±.012)|| |Front-to-back deviation<br>Δ_h_<br>Δ_h_||0||±1.0<br>(±.039)|| |Side-to-side deviation<br>Δ_p_<br>Δ_p_||0||±1.3<br>(±.051)|| |Ordinate to adjacent component lead: MF-RHS350 ~ MF-RHS800<br>_P1_<br>_P1_||3.81<br>(.150)||±0.7<br>(±.028)|| |Ordinate to adjacent component lead: MF-RHS900 ~ MF-RHS1300<br>_P1_<br>_P1_||7.62<br>(.300)||±0.7<br>(±.028)|| |Lead spacing: MF-RHS350 ~ MF-RHS800<br>_F_<br>_F_||5.08<br>(.200)|||| |Lead spacing: MF-RHS900 ~ MF-RHS1300<br>_F_<br>_F_||10.2<br>(.400)|+0.6/-0.2<br>(+.024/-.008)||| |_— Continued on next page —_||DIME|NSIONS:||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-RHS Series Tape and Reel Specifications** Devices taped using EIA-468/IEC 60286-2 standards. See table below and figures for details. ||**IEC**|**EIA**||| |---|---|---|---|---| |**Dimension Description**|**Mark**|**Mark**|**Dimensions**|**Tolerance**| |Reel width including flanges and hub|_W4_|_w2_|62.0<br>(2.44)|max| |Dimension between flanges (measured at hub)|_W3_|_w1_|allow proper reeling|and unreeling| |Reel diameter|_A_|a|370.0<br>(14.57)|max.| |Space between flanges (at hub, excluding device)|||4.75<br>(.187)|±3.25<br>(±.128)| |Arbor hole diameter|_C_|_c_|26.0<br>(1.024)|±12.0<br>(±.472)| |Core diameter|_N_|_n_|80<br>(3.15)|mi~~n.~~| |Box dimensions|||62 x 372 x 372<br>(2.44 x 14.6 x 14.6)|max.| |Consecutive missing places|||3|max.| |Empty places per reel|||Less than 0.1 %|| **==> picture [502 x 196] intentionally omitted <==** **----- Start of picture text -----**<br> MM<br>DIMENSIONS:<br>Taped Component Dimensions - (INCHES)<br>per EIA Mark - h h p p<br>Figure 1<br>Reference plane<br>H1 P1 F W2 H1<br>H<br>L A B W0 H0 W1<br>W<br>User direction of feed<br>P0 D0<br>t1 Cross section A - B t<br>**----- End of picture text -----**<br> **Reel Dimensions - per EIA Mark - Figure 2** **==> picture [399 x 142] intentionally omitted <==** **----- Start of picture text -----**<br> Reel<br>Upper side<br>n<br>Tape<br>User<br>a direction<br>of<br>feed<br>c Lower side<br>w1<br>w2<br>**----- End of picture text -----**<br> MF-RHS SERIES, REV. A, 12/23 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 April 27, 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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