MF-USMF075

Resettable Fuse, PPTC, 1210 (3225 Metric), MF-USMF, 6 VDC, 750 mA, 1.5 A, 0.1 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
Thermistor Mounting:SMD; Product Range:MF-USMF Series; Holding Current:750mA; Tripping Current:1.5A; Voltage Rating:6V; Operating Temperature Min:-40°C; Operating Temperature Max:85°C; Automo
SVHC: No SVHC (04-Feb-2026)
Time to Trip: 0.1s
Trip Current: 1.5A
Product Range: MF-USMF
Voltage Rating: 6VDC
Holding Current: 750mA
PPTC Case Style: 1210 (3225 Metric)
Current Rating Max: 40A
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	0.226 €
Current stock	1000+
Lead time	30 days

Datasheet

## **Features** 

- Fast tripping resettable circuit protection 

- Surface mount packaging for automated assembly 

- Small footprint size (1210) 

- RoHS compliant* and halogen free** 

- Agency recognition* 

## **Applications** 

- Game consoles 

- PC motherboards 

- USB port protection - USB 2.0, 3.0 & OTG ■ HDMI 1.4 Source protection ■ IEEE 1394 ports ■ Mobile phones ■ Digital cameras 

|**Model**|**V max.**<br>**Volts**|**I max.**<br>**Amps**|**Ihold**|**Itrip**|**Resistance**|**Resistance**|**Max. Time**<br>**To Trip**|**Max. Time**<br>**To Trip**|**Tripped**<br>**Power**<br>**Dissipation**|
|---|---|---|---|---|---|---|---|---|---|
||||**Amperes**<br>**at 23 °C**||**Ohms**<br>**at 23 °C**||**Amperes**<br>**at 23 °C**|**Seconds**<br>**at 23 °C**|**Watts**<br>**at 23 °C**|
||||Hold<br>se|Trip<br>se|RMin.<br>se|R1Max.<br>se|se|se|Typ.<br>se|
|MF-USMF005<br>po|30<br>po|10<br>po<br>sD|0.05<br>po<br>sD|0.15<br>po<br>GO|2.800<br>po<br>GO|50.000<br>po<br>GO|0.25<br>po|1.50<br>po|0.6<br>po|
|MF-USMF010<br>ee|30<br>ee|10<br>ee<br>sD|0.10<br>ee<br>sD<br>GDGD|0.30<br>ee<br>GO<br>GDGD|0.800<br>ee<br>GO<br>GO|15.000<br>ee<br>GO<br>I|0.50<br>ee|0.60<br>ee|0.6<br>ee|
|MF-USMF020<br>ee<br>Gn|30<br>ee<br>Gn|10<br>ee<br>sD<br>Gn|0.20<br>ee<br>sD<br>Gn<br>GDGD<br>(UD|0.40<br>ee<br>GO<br>Gn<br>GDGD<br>(OUD|0.400<br>ee<br>GO<br>Gn<br>GO<br>GI(OO|5.000<br>ee<br>GO<br>Gn<br>I<br>(OO|8.00<br>ee<br>Gn<br>(OO|0.02<br>ee<br>Gn|0.6<br>ee<br>Gn|
|MF-USMF035<br>Gn<br>GD<br>PO|6<br>Gn<br>GD|40<br>Gn<br>GD<br>GD|0.35<br>Gn<br>GDGD<br>GD<br>(UD<br>GD|0.75<br>Gn<br>GDGD<br>GD<br>(OUD<br>(OUD|0.200<br>Gn<br>GO<br>GD<br>GI(OO<br>(I|1.300<br>Gn<br>I<br>GD<br>(OO<br>(I|8.00<br>Gn<br>GD<br>(OO<br>OO|0.20<br>Gn<br>GD|0.6<br>Gn<br>GD|
|MF-USMF050<br>GD<br>Gn<br>PO|13.2<br>GD<br>Gn|40<br>GD<br>Gn<br>GD|0.50<br>GD<br>(UD<br>Gn<br>GD|1.00<br>GD<br>(OUD<br>Gn<br>(OUD|0.180<br>GD<br>GI(OO<br>Gn<br>(I|0.900<br>GD<br>(OO<br>Gn<br>(I|8.00<br>GD<br>(OO<br>Gn<br>OO|0.10<br>GD<br>Gn|0.6<br>GD<br>Gn|
|MF-USMF075<br>Gn<br>PO<br>PO|6<br>Gn|40<br>Gn<br>GD|0.75<br>Gn<br>GD|1.50<br>Gn<br>(OUD|0.070<br>Gn<br>(I|0.450<br>Gn<br>(I|8.00<br>Gn<br>OO|0.10<br>Gn|0.6<br>Gn|
|MF-USMF110<br>PO<br>PO<br>PO|6|40<br>GD|1.10<br>GD|2.20<br>(OUD|0.050<br>(I|0.210<br>(I|5.00<br>OO|1.00|0.6|
|MF-USMF150<br>PO<br>PO<br>Po|6|40|1.50|3.00|0.030|0.110|5.00|5.00|0.6|
|MF-USMF175X***<br>PO<br>Po|6|40|1.75|3.50|0.020|0.090|8.00|1.00|0.7|



*** CSA approval pending. 

## ~~**Environmental Characteristics**~~ 

|Operating Temperature ......................................... -40 °C to +85 °C|Operating Temperature ......................................... -40 °C to +85 °C|
|---|---|
|Maximum Device Surface Temperature||
|in Tripped State .................................................... 125 °C|in Tripped State .................................................... 125 °C|
|Passive Aging ....................................................... +85 °C, 1000 hours ............................................... ±5 % typical resistance change|Passive Aging ....................................................... +85 °C, 1000 hours ............................................... ±5 % typical resistance change|
|Humidity Aging ..................................................... +85 °C, 85 % R.H. 1000 hours ............................. ±5 % typical resistance change|Humidity Aging ..................................................... +85 °C, 85 % R.H. 1000 hours ............................. ±5 % typical resistance change|
|Thermal Shock ..................................................... +85 °C to -40 °C, 20 times ................................... ±10 % typical resistance change|Thermal Shock ..................................................... +85 °C to -40 °C, 20 times ................................... ±10 % typical resistance change|
|Solvent Resistance ............................................... MIL-STD-202, Method 215 ................................... No change|Solvent Resistance ............................................... MIL-STD-202, Method 215 ................................... No change|
|Vibration ............................................................... MIL-STD-883C, Method 2007.1, .......................... No change|Vibration ............................................................... MIL-STD-883C, Method 2007.1, .......................... No change|
||Condition A|



## ~~**Test Procedures And Requirements For Model MF-USMF 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 specifi ed 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 .......................................................... ANSI/J-STD-002 ................................................... 95 % min. coverage|
|UL File Number .................................................... E174545|
|http://www.ul.com/  Follow link to Certifi cations, then UL File No., enter E174545|
|CSA File Number .................................................. CA110338|
|http://directories.csa-international.org/ Under “Certifi cation Record” and “File Number”|
|enter 110338-0-000|
|TÜV Certifi cate Number ....................................... R 02057213|
|http://www.tuvdotcom.com/ Follow link to “other certifi cates”, enter File No. 2057213|



*RoHS Directive 2002/95/EC Jan 27 2003 including Annex. 

**To be considered halogen free, each homogenous material can have a maximum concentration of 900 ppm of either bromine or chlorine. Specifi cations are subject to change without notice. Customers should verify actual device performance in their specifi c applications. 

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

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

|**Model**||**A**|**A**|||**B**|**B**|||**C**|**C**|||**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-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)|



Packaging: 3000 pcs. per reel. 

MM DIMENSIONS: (INCHES) 

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Top and Bottom View Side View Recommended Pad Layout<br>A C 1.0 ± 0.05 1.0 ± 0.05<br>(.039 ± .002) (.039 ± .002)<br>1.6 ± 0.1<br>B (.063  ± .004)<br>2.0 ± 0.1<br>(.079 ± .004)<br>D<br>**----- End of picture text -----**<br>


## **Terminal material:** 

Electroless Ni under immersion Au 

**Termination pad solderability:** Standard Au f nish: 

Meets ANSI/J-STD-002 Category 2. 

**Recommended Storage:** 40 °C max./70 % RH max. 

## ~~**Solder Ref ow Recommendations**~~ 

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Preheating Soldering Cooling<br>300<br>250<br>200<br>150<br>100<br>50<br>0<br>160–220 10–20 120<br>Time (seconds)<br>C)Temperature (°<br>**----- End of picture text -----**<br>


## **Notes:** 

- MF-USMF models cannot be wave soldered. 

- If refl ow temperatures exceed the recommended profi le, devices may not meet the performance requirements. 

- Compatible with Pb and Pb-free solder refl ow profi les. 

- Excess solder may cause a short circuit, especially during hand soldering. Please refer to the Multifuse[®] Polymer PTC Soldering Recommendation guidelines. 

Specifi cations are subject to change without notice. Customers should verify actual device performance in their specifi c applications. 

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

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

|**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**|
|---|---|---|---|---|---|---|---|---|
||**-40 ˚C**|**-20 ˚C**<br>**0 ˚C**|<br>**23 ˚C**|**40 ˚C**|**50 ˚C**|**60 ˚C**|**70 ˚C**|**85 ˚C**|
|MF-USMF005|0.08|0.07<br>0.0|6<br>0.05|0.04|0.04|0.03|0.03|0.02|
|MF-USMF010|0.15|0.13<br>0.1|2<br>0.10|0.09|0.08|0.07|0.06|0.05|
|MF-USMF020|0.32|0.28<br>0.2|4<br>0.20|0.18|0.16|0.14|0.12|0.10|
|MF-USMF035|0.51|0.46<br>0.4|0<br>0.34|0.30|0.27|0.24|0.22|0.18|
|MF-USMF050|0.76|0.66<br>0.5|8<br>0.48|0.42|0.38|0.35|0.29|0.23|
|MF-USMF075|1.10|0.97<br>0.8|6<br>0.72|0.64|0.58|0.55|0.47|0.39|
|MF-USMF110|1.60|1.42<br>1.2|6<br>1.10|0.94|0.86|0.80|0.70|0.58|
|MF-USMF150|2.30|2.02<br>1.7|6<br>1.43|1.24|1.11|1.00|0.85|0.65|
|MF-USMF175X|2.80|2.45<br>2.1|0<br>1.75|1.55|1.45|1.35|1.25|1.10|



## ~~**Typical Time to Trip at 23 ˚C**~~ 

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100<br>MF-USMF020 MF-USMF075 MF-USMF110<br>MF-USMF035 MF-USMF150<br>MF-USMF050 MF-USMF175X<br>MF-USMF010<br>10<br>1<br>MF-USMF005<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>


The Time to Trip curves represent typical performance of a device in a simulated application environment. Actual performance in specifi c customer applications may differ from these values 

## ~~**How to Order**~~ 

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MF - USMF 010  X  -  2<br>Multifuse [®]  Product<br>Designator<br>Series<br>USMF = 1210 Surface Mount<br>Component<br>Hold Current, Ihold<br>005-175 (0.05-1.75 Amps)<br>Multifuse [®]  freeXpansion [™]  Design<br>Packaging<br>Packaged per EIA 481-1<br>-2 = Tape and Reel<br>**----- End of picture text -----**<br>


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

Represents total content. Layout may vary. 

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PART IDENTIFICATION:<br>MF-USMF005   = 0<br>MF-USMF010   = 1<br>MF-USMF020   = 2<br>MF-USMF035   = 3<br>6 MF-USMF050   = 4<br>A MF-USMF075   = 5<br>MF-USMF110   = 6<br>MF-USMF150   = 8<br>MF-USMF175X = 9<br>UNDERSCORE<br>SIGNIFIES<br>HALOGEN FREE  BIWEEKLY DATE CODE:<br>COMPLIANCE WEEK 1 AND 2 = A<br>WEEK 51 AND 52 = Z<br>**----- End of picture text -----**<br>


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**Asia-Pacifi c:** TEL +886-2 25624117 • FAX +886-2 25624116 **Europe:** TEL +41-41 7685555 • FAX +41-41 7685510 **The Americas:** TEL +1-951 781-5500 • FAX +1-951 781-5700 **www.bourns.com** 

MF-USMF SERIES, REV. L, 04/10 

“freeXpansion Design” is a trademark of Bourns, Inc. Specifi cations are subject to change without notice. Customers should verify actual device performance in their specifi c applications. 

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MF-USMF Series Tape and Reel Specifications<br>MF-USMF Series<br>Tape Dimensions per EIA 481-2<br>8.0 ± 0.3<br>W (0.315 ± 0.012)<br>P0 (0.157 ± 0.0044.0 ± 0.1 )<br>P1 4.0 ± 0.1<br>(0.157 ± 0.004)<br>P2 (0.079 ± 0.002)2.0 ± 0.05<br>A0 (0.109 ± 0.004)2.76 ± 0.10<br>B0 3.50 ± 0.10<br>(0.138 ± 0.004)<br>B1 max. 4.35<br>(0.171)<br>D0  (0.059 + 0.004/1.5 + 0.1/-0.0-0)<br>F 3.5 ± 0.05<br>(0.138 ± 0.002)<br>1.75 ± 0.10<br>E1 (0.069 ± 0.004)<br>E2 min. (0.246)6.25<br>T max. 0.6<br>(0.024)<br>0.1<br>T1 max. (0.004)<br>K0 (0.042 ± 0.004)1.07 ± 0.10<br>Leader min. 390<br>(15.35)<br>Trailer min. 160<br>(6.30)<br>Reel Dimensions<br>A max. 185<br>(7.283)<br>N min. 50<br>(1.97)<br>W1 (0.331 + 0.059/-0.08.4 + 1.5/ -0.0 )<br>W2  max. 14.4<br>(0.567)<br>MM<br>P0 UNIT =<br>(INCHES)<br>T D0 P2 E1<br>W2(MEASURED<br>AT HUB)<br>COVER<br>TAPE<br>F<br>A N(HUB DIA.)<br>E2 W<br>B1<br>B0<br>W1(MEASURED<br>K0 P1 AT HUB)<br>T1 A0<br>**----- End of picture text -----**<br>


Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications.

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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