PTC Resettable Fuses

Explore PTC Resettable Fuses parts from multiple manufacturers, with model information, availability, datasheets and technical specifications for engineering and purchasing.

For parts that are not shown in the list, send the manufacturer part number, quantity or BOM to JIEXIN Electronics. Our team can assist with availability checks and quotation support.

Mfr. Part #	Availability	Price	Quantity	Datasheet	Package/Case	Series	Packaging	Product Status	Type	Voltage - Max	Current - Hold (Ih) (Max)	Current - Trip (It)	Current - Max	Time to Trip	Resistance - Initial (Ri) (Min)	Resistance - Post Trip (R1) (Max)	Resistance - 25°C (Typ)	Operating Temperature	Grade	Qualification	Ratings	Mounting Type	Size / Dimension	Height - Seated (Max)	Thickness (Max)	Lead Spacing
MF-RX250-AP-14 PTC RESET FUSE 60V 2.5A RADIAL Bourns Inc.	6,874	0.00	RFQ	Datasheet	Radial, Disc	Multifuse®, MF-RX	Tape & Box (TB)	Obsolete	Polymeric	60V	2.5 A	5 A	40 A	15.6 s	50 mOhms	130 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.839" Dia x 0.122" T (21.30mm x 3.10mm)	1.050" (26.67mm)	-	0.402" (10.20mm)
MF-RX110-AP-14 PTC RESET FUSE 60V 1.1A RADIAL Bourns Inc.	6,106	0.00	RFQ	Datasheet	Radial, Disc	Multifuse®, MF-RX	Tape & Box (TB)	Obsolete	Polymeric	60V	1.1 A	2.2 A	40 A	8.2 s	150 mOhms	380 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.512" Dia x 0.122" T (13.00mm x 3.10mm)	0.902" (22.90mm)	-	0.201" (5.10mm)
MF-RX135-AP-14 PTC RESET FUSE 60V 1.35A RADIAL Bourns Inc.	7,908	0.00	RFQ	Datasheet	Radial, Disc	Multifuse®, MF-RX	Tape & Box (TB)	Obsolete	Polymeric	60V	1.35 A	2.7 A	40 A	9.6 s	120 mOhms	300 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.571" Dia x 0.122" T (14.50mm x 3.10mm)	0.939" (23.84mm)	-	0.402" (10.20mm)
MF-RX160-AP-14 PTC RESET FUSE 60V 1.6A RADIAL Bourns Inc.	3,221	0.00	RFQ	Datasheet	Radial, Disc	Multifuse®, MF-RX	Tape & Box (TB)	Obsolete	Polymeric	60V	1.6 A	3.2 A	40 A	11.4 s	90 mOhms	220 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.642" Dia x 0.122" T (16.30mm x 3.10mm)	1.039" (26.40mm)	-	0.402" (10.20mm)
MF-RX375-2-14 PTC RESET FUSE 60V 3.75A RADIAL Bourns Inc.	6,383	0.00	RFQ	Datasheet	Radial, Disc	Multifuse®, MF-RX	Tape & Box (TB)	Obsolete	Polymeric	60V	3.75 A	7.5 A	40 A	24 s	30 mOhms	80 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	1.118" Dia x 0.122" T (28.40mm x 3.10mm)	1.319" (33.50mm)	-	0.402" (10.20mm)
MF-RX160-2-14 PTC RESET FUSE 60V 1.6A RADIAL Bourns Inc.	4,251	0.00	RFQ	Datasheet	Radial, Disc	Multifuse®, MF-RX	Tape & Box (TB)	Obsolete	Polymeric	60V	1.6 A	3.2 A	40 A	11.4 s	90 mOhms	220 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.642" Dia x 0.122" T (16.30mm x 3.10mm)	0.939" (23.84mm)	-	0.402" (10.20mm)
MF-RX185-AP-14 PTC RESET FUSE 60V 1.85A RADIAL Bourns Inc.	8,109	0.00	RFQ	Datasheet	Radial, Disc	Multifuse®, MF-RX	Tape & Box (TB)	Obsolete	Polymeric	60V	1.85 A	3.7 A	40 A	12.6 s	80 mOhms	190 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.701" Dia x 0.122" T (17.80mm x 3.10mm)	1.050" (26.67mm)	-	0.402" (10.20mm)
0007770020 RAYCHEM FUSE (RUE 185) 70020 Molex	9,791	0.00	RFQ	Datasheet	-	*	Bulk	Obsolete	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
R1206-010 PTC RESET FUSE 60V 100MA 1206 OptiFuse	6,629	0.20	RFQ	Datasheet	1206 (3216 Metric)	R1206	Tape & Reel (TR)	Active	Polymeric	60V	100 mA	250 mA	100 A	1 s	1.6 Ohms	15 Ohms	-	-40°C ~ 85°C	-	-	-	Surface Mount	0.128" L x 0.065" W (3.25mm x 1.65mm)	-	0.033" (0.85mm)	-
R1206-010-R PTC RESET FUSE 60V 100MA 1206 OptiFuse	9,773	0.20	RFQ	Datasheet	1206 (3216 Metric), Concave	R1206	Tape & Reel (TR)	Active	Polymeric	60V	100 mA	250 mA	100 A	1 s	1.6 Ohms	15 Ohms	-	-40°C ~ 85°C	-	-	-	Surface Mount	0.128" L x 0.065" W (3.25mm x 1.65mm)	-	0.033" (0.85mm)	-
PSR-28690-2 PSR RESET FUSE Littelfuse Inc.	2,979	0.00	RFQ	Datasheet	-	*	Tape & Reel (TR)	Obsolete	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
NANOSMD175LR-E PTC RESET FUSE 6V 1.75A 1206 Littelfuse Inc.	7,574	0.00	RFQ	Datasheet	-	*	Tape & Reel (TR)	Obsolete	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
PSR-28445-E-2 PSR RESET FUSE Littelfuse Inc.	2,934	0.00	RFQ	Datasheet	-	*	Tape & Reel (TR)	Obsolete	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
MICROSMD450LR-XC-2 PTC RESET FUSE 12V 4.5A 1206 Littelfuse Inc.	5,947	0.00	RFQ	Datasheet	-	*	Tape & Reel (TR)	Obsolete	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
PSR-29330-C PSR RESET FUSE Littelfuse Inc.	2,935	0.00	RFQ	Datasheet	-	*	Tape & Reel (TR)	Obsolete	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
PSR-28473-D-2 PSR RESET FUSE Littelfuse Inc.	2,832	0.00	RFQ	Datasheet	-	*	Tape & Reel (TR)	Obsolete	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
NANOSMD550LR-2 PTC RESET FUSE 6V 5.5A 1206 Littelfuse Inc.	3,359	0.00	RFQ	Datasheet	-	*	Tape & Reel (TR)	Obsolete	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
PSR-29138-C-2 PSR RESET FUSE Littelfuse Inc.	6,299	0.00	RFQ	Datasheet	-	*	Tape & Reel (TR)	Obsolete	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
PSR-29131-2 PSR RESET FUSE Littelfuse Inc.	3,418	0.00	RFQ	Datasheet	-	*	Tape & Reel (TR)	Obsolete	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
PSR-28120-2 PSR RESET FUSE Littelfuse Inc.	4,192	0.00	RFQ	Datasheet	-	*	Tape & Reel (TR)	Obsolete	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-

FAQ

Frequently Asked Questions

What are PTC Resettable Fuses components used for?

PTC Resettable Fuses components are used in a wide range of electronic equipment and systems. Their exact function depends on the device, circuit design and technical requirements of the application.

How do I choose the right PTC Resettable Fuses part?

Compare the manufacturer part number, key specifications, package type, operating conditions, availability and datasheet information. For replacement projects, always verify the critical electrical and mechanical parameters before selecting an alternative.

Can JIEXIN Electronics help source obsolete or hard-to-find PTC Resettable Fuses parts?

Yes. Send us the required manufacturer part number, quantity or BOM. Our sourcing team can help check stock availability, lead time, alternative sourcing options and quotation details.

How can I request pricing and availability?

Submit the part number, manufacturer and required quantity through our RFQ form. JIEXIN Electronics will review your request and provide available stock, pricing and sourcing information.