• • • PTC Resettable Fuses

PTC Resettable Fuses

PTC Resettable Fuses are designed to stop current flow when it exceeds a certain limit (overcurrent protection). The Fuses work by increasing its resistance as its temperature rises due to the current increase. The trip current ranges from 14 mA to 50 A with the Time to trip ranging from 8 ms to 90 s. PTC = Positive Temperature Coefficient.

Sourcing Bourns, Inc. PTC Resettable Fuses: in-stock lines for quick ship, BOM matching for multi-line builds, and original-channel screening — not keyword stuffing.

BOM matching · Lead time · Authenticity · Brands

Product	Pricing	Datasheet	Voltage - Max	Current - Max	Current - Hold (Ih) (Max)	Current - Trip (It)	Time to Trip	Resistance - Initial (Ri) (Min)	Resistance - Post Trip (R1) (Max)	Resistance - 25°C (Typ)	Ratings	Height - Seated (Max)	Thickness (Max)	Mounting Type	Operating Temperature	Size / Dimension	Type	Lead Spacing	Package / Case	Stock & Quantity
MF-USMF010-2 Bourns, Inc.	1 $0.3400	Datasheet	30V	10 A	100 mA	300 mA	600 ms	800 mOhms	15 Ohms	-	AEC-Q200	-	0.033" (0.85mm)	Surface Mount	-40°C ~ 85°C	0.127" L x 0.102" W (3.22mm x 2.58mm)	Polymeric	-	1210 (3225 Metric), Concave	4,438 Buy Now Get Quote
MF-USMF050-2 Bourns, Inc.	1 $0.3400	Datasheet	13.2V	40 A	500 mA	1 A	100 ms	180 mOhms	900 mOhms	-	AEC-Q200	-	0.033" (0.85mm)	Surface Mount	-40°C ~ 85°C	0.127" L x 0.102" W (3.22mm x 2.58mm)	Polymeric	-	1210 (3225 Metric), Concave	5,501 Buy Now Get Quote
MF-USMF020-2 Bourns, Inc.	1 $0.3400	Datasheet	30V	10 A	200 mA	400 mA	20 ms	400 mOhms	5 Ohms	-	AEC-Q200	-	0.033" (0.85mm)	Surface Mount	-40°C ~ 85°C	0.127" L x 0.102" W (3.22mm x 2.58mm)	Polymeric	-	1210 (3225 Metric), Concave	4,191 Buy Now Get Quote
MF-USMF005-2 Bourns, Inc.	1 $0.3400	Datasheet	30V	10 A	50 mA	150 mA	1.5 s	2.8 Ohms	50 Ohms	-	AEC-Q200	-	0.033" (0.85mm)	Surface Mount	-40°C ~ 85°C	0.127" L x 0.102" W (3.22mm x 2.58mm)	Polymeric	-	1210 (3225 Metric), Concave	3,452 Buy Now Get Quote
MF-PSMF010X-2 Bourns, Inc.	1 $0.3200	Datasheet	15V	40 A	100 mA	300 mA	1.5 s	1 Ohms	7.5 Ohms	-	-	-	0.033" (0.85mm)	Surface Mount	-40°C ~ 85°C	0.085" L x 0.053" W (2.15mm x 1.35mm)	Polymeric	-	0805 (2012 Metric), Concave	5,309 Buy Now Get Quote
MF-PSMF110X-2 Bourns, Inc.	1 $0.3200	Datasheet	6V	40 A	1.1 A	2.2 A	300 ms	60 mOhms	210 mOhms	-	-	-	0.049" (1.25mm)	Surface Mount	-40°C ~ 85°C	0.085" L x 0.053" W (2.15mm x 1.35mm)	Polymeric	-	0805 (2012 Metric), Concave	9,477 Buy Now Get Quote
MF-PSMF075X-2 Bourns, Inc.	1 $0.3200	Datasheet	6V	40 A	750 mA	1.5 A	200 ms	90 mOhms	350 mOhms	-	-	-	0.049" (1.25mm)	Surface Mount	-40°C ~ 85°C	0.085" L x 0.053" W (2.15mm x 1.35mm)	Polymeric	-	0805 (2012 Metric), Concave	3,458 Buy Now Get Quote
MF-NSMF050-2 Bourns, Inc.	1 $0.3400	Datasheet	13.2V	100 A	500 mA	1 A	100 ms	150 mOhms	700 mOhms	-	AEC-Q200	-	0.033" (0.85mm)	Surface Mount	-40°C ~ 85°C	0.126" L x 0.063" W (3.20mm x 1.60mm)	Polymeric	-	1206 (3216 Metric), Concave	8,081 Buy Now Get Quote
MF-NSMF012-2 Bourns, Inc.	1 $0.0180 100 $0.0144 500 $0.0120	Datasheet	30V	10 A	120 mA	290 mA	200 ms	1.35 Ohms	8.5 Ohms	-	AEC-Q200	-	0.043" (1.10mm)	Surface Mount	-40°C ~ 85°C	0.126" L x 0.063" W (3.20mm x 1.60mm)	Polymeric	-	1206 (3216 Metric), Concave	6,000 Buy Now Get Quote
MF-NSMF020-2 Bourns, Inc.	1 $0.3400	Datasheet	24V	10 A	200 mA	460 mA	600 ms	600 mOhms	2.6 Ohms	-	AEC-Q200	-	0.033" (0.85mm)	Surface Mount	-40°C ~ 85°C	0.126" L x 0.063" W (3.20mm x 1.60mm)	Polymeric	-	1206 (3216 Metric), Concave	1,795 Buy Now Get Quote
MF-NSMF075-2 Bourns, Inc.	1 $0.3400	Datasheet	6V	100 A	750 mA	1.5 A	100 ms	100 mOhms	400 mOhms	-	AEC-Q200	-	0.028" (0.70mm)	Surface Mount	-40°C ~ 85°C	0.126" L x 0.063" W (3.20mm x 1.60mm)	Polymeric	-	1206 (3216 Metric), Concave	6,152 Buy Now Get Quote
MF-MSMF050-2 Bourns, Inc.	1 $0.0531 100 $0.0425 500 $0.0354	Datasheet	15V	100 A	500 mA	1 A	150 ms	150 mOhms	1 Ohms	-	AEC-Q200	-	0.033" (0.85mm)	Surface Mount	-40°C ~ 85°C	0.179" L x 0.128" W (4.55mm x 3.24mm)	Polymeric	-	1812 (4532 Metric), Concave	1,000 Buy Now Get Quote
MF-MSMF075-2 Bourns, Inc.	1 $0.3200	Datasheet	13.2V	100 A	750 mA	1.5 A	200 ms	110 mOhms	450 mOhms	-	AEC-Q200	-	0.033" (0.85mm)	Surface Mount	-40°C ~ 85°C	0.179" L x 0.128" W (4.55mm x 3.24mm)	Polymeric	-	1812 (4532 Metric), Concave	2,808 Buy Now Get Quote
MF-SM100-2 Bourns, Inc.	1 $0.3700	Datasheet	30V	80 A	1.1 A	2.2 A	500 ms	120 mOhms	480 mOhms	-	AEC-Q200	-	0.118" (3.00mm)	Surface Mount	-40°C ~ 85°C	0.287" L x 0.214" W (7.31mm x 5.44mm)	Polymeric	-	2-SMD	8,271 Buy Now Get Quote
MF-SM030-2 Bourns, Inc.	1 $0.3700	Datasheet	60V	40 A	300 mA	600 mA	3 s	900 mOhms	4.8 Ohms	-	AEC-Q200	-	0.125" (3.18mm)	Surface Mount	-40°C ~ 85°C	0.287" L x 0.214" W (7.31mm x 5.44mm)	Polymeric	-	2-SMD	8,140 Buy Now Get Quote
MF-SM075-2 Bourns, Inc.	1 $0.3700	Datasheet	30V	80 A	750 mA	1.5 A	300 ms	230 mOhms	1 Ohms	-	AEC-Q200	-	0.125" (3.18mm)	Surface Mount	-40°C ~ 85°C	0.287" L x 0.214" W (7.31mm x 5.44mm)	Polymeric	-	2-SMD	5,887 Buy Now Get Quote
MF-SM050-2 Bourns, Inc.	1 $0.3700	Datasheet	60V	40 A	500 mA	1 A	4 s	350 mOhms	1.4 Ohms	-	AEC-Q200	-	0.125" (3.18mm)	Surface Mount	-40°C ~ 85°C	0.287" L x 0.214" W (7.31mm x 5.44mm)	Polymeric	-	2-SMD	4,014 Buy Now Get Quote
MF-MSMF030-2 Bourns, Inc.	1 $0.6923 100 $0.5538 500 $0.4615	Datasheet	30V	10 A	300 mA	600 mA	100 ms	300 mOhms	3 Ohms	-	AEC-Q200	-	0.043" (1.10mm)	Surface Mount	-40°C ~ 85°C	0.179" L x 0.128" W (4.55mm x 3.24mm)	Polymeric	-	1812 (4532 Metric), Concave	10 Buy Now Get Quote
MF-MSMF010-2 Bourns, Inc.	1 $0.3200	Datasheet	60V	40 A	100 mA	300 mA	1.5 s	700 mOhms	15 Ohms	-	AEC-Q200	-	0.043" (1.10mm)	Surface Mount	-40°C ~ 85°C	0.179" L x 0.128" W (4.55mm x 3.24mm)	Polymeric	-	1812 (4532 Metric), Concave	3,677 Buy Now Get Quote
MF-MSMF014-2 Bourns, Inc.	1 $0.3200	Datasheet	60V	40 A	140 mA	340 mA	150 ms	400 mOhms	6.5 Ohms	-	AEC-Q200	-	0.043" (1.10mm)	Surface Mount	-40°C ~ 85°C	0.179" L x 0.128" W (4.55mm x 3.24mm)	Polymeric	-	1812 (4532 Metric), Concave	3,764 Buy Now Get Quote