PTC Resettable Fuses

Manufacturer 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

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PTC Resettable Fuses

PTC Resettable Fuses are circuit protection components used to protect electronic systems from overcurrent, short-circuit and fault conditions. Unlike one-time fuses, PTC resettable fuses increase resistance during a fault and can return to a low-resistance state after the fault is removed and the device cools down.

This category includes polymer PTC resettable fuses, PPTC fuses, radial leaded PTC fuses, surface-mount PTC fuses and related overcurrent protection components. These devices are commonly selected based on hold current, trip current, rated voltage, resistance, response time, package type, operating temperature and application requirements.

TomatoElec supplies original PTC Resettable Fuses from recognized manufacturers such as Littelfuse, Bourns, Eaton, Bel Fuse, TE Connectivity, Murata, TDK, Panasonic and other major brands. As an in-stock electronic components supplier and independent distributor, TomatoElec provides inventory support, original component sourcing and BOM sourcing services for global customers.

Photo 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-NSMF050/24X-2

MF-NSMF050/24X-2

FUSE RESET PPTC 1206 0.50A/24V

Bourns Inc.

5,757 -
RFQ
MF-NSMF050/24X-2

Datasheet

1206 (3216 Metric), Concave Multifuse® freeXpansionTM, MF-NSMF Tape & Reel (TR) Active Polymeric 24V 500 mA 1 A 100 A 100 ms 150 mOhms 750 mOhms - -40°C ~ 85°C - - - Surface Mount 0.126" L x 0.063" W (3.20mm x 1.60mm) - 0.033" (0.85mm) -
MF-NSMF125/8X-2

MF-NSMF125/8X-2

FUSE RESET PPTC 1206 1.25A/8V

Bourns Inc.

4,957 -
RFQ
MF-NSMF125/8X-2

Datasheet

1206 (3216 Metric), Concave Multifuse® freeXpansionTM, MF-NSMF Tape & Reel (TR) Active Polymeric 8V 1.25 A 2.5 A 100 A 200 ms 40 mOhms 150 mOhms - -40°C ~ 85°C - - - Surface Mount 0.126" L x 0.063" W (3.20mm x 1.60mm) - 0.043" (1.10mm) -
MF-LSMF075/60X-2

MF-LSMF075/60X-2

FUSE RESETTABLE 2920 0.75A 60V

Bourns Inc.

3,803 -
RFQ
MF-LSMF075/60X-2

Datasheet

- - Tape & Reel (TR) Active - - - - - - - - - - - - - - - - - -
MF-NSML600/6-2

MF-NSML600/6-2

PTC RESET FUSE 6V 6A 1206

Bourns Inc.

3,090 -
RFQ
MF-NSML600/6-2

Datasheet

1206 (3216 Metric), Concave Multifuse®, MF-NSML/X Tape & Reel (TR) Active Polymeric 6V 6 A 12 A 50 A 5 s 2 mOhms 9 mOhms - -40°C ~ 85°C - - - Surface Mount 0.128" L x 0.063" W (3.25mm x 1.60mm) - 0.039" (1.00mm) -
MF-NSML350/6-2

MF-NSML350/6-2

PTC RESET FUSE 6V 3.5A 1206

Bourns Inc.

2,809 -
RFQ
MF-NSML350/6-2

Datasheet

1206 (3216 Metric), Concave Multifuse®, MF-NSML/X Tape & Reel (TR) Active Polymeric 6V 3.5 A 7 A 50 A 5 s 2 mOhms 22 mOhms - -40°C ~ 85°C - - - Surface Mount 0.128" L x 0.063" W (3.25mm x 1.60mm) - 0.055" (1.40mm) -
MF-LSMF150/33X-2

MF-LSMF150/33X-2

2920 RESETTABLE SMD PPTC 1.5A/33

Bourns Inc.

2,254 -
RFQ
MF-LSMF150/33X-2

Datasheet

2920 (7351 Metric), Concave Multifuse®, MF-LSMF Tape & Reel (TR) Active Polymeric 33V 1.5 A - - - - - - -40°C ~ 85°C Automotive AEC-Q200 - Surface Mount 0.290" L x 0.202" W (7.36mm x 5.12mm) - - -
MF-SMHT300-2

MF-SMHT300-2

PTC RESET FUSE 16V 3.0A 2SMD

Bourns Inc.

1,499 -
RFQ
MF-SMHT300-2

Datasheet

2-SMD Multifuse®, MF-S Tape & Reel (TR) Active Polymeric 16V 3 A 6 A 100 A 8 s 24 mOhms 83 mOhms - -40°C ~ 125°C Automotive AEC-Q200 AEC-Q200 Surface Mount 0.344" L x 0.264" W (8.75mm x 6.71mm) - 0.118" (3.00mm) -
MF-LSMF110/60X-2

MF-LSMF110/60X-2

FUSE RESETTABLE 2920 1.1A 60V

Bourns Inc.

3,957 -
RFQ
MF-LSMF110/60X-2

Datasheet

- - Tape & Reel (TR) Active - - - - - - - - - - - - - - - - - -
MF-USML400/6-2

MF-USML400/6-2

PTC RESET FUSE 6V 4A 1210

Bourns Inc.

3,500 -
RFQ
MF-USML400/6-2

Datasheet

1210 (3225 Metric), Concave Multifuse®, MF-USML/X Tape & Reel (TR) Active Polymeric 6V 4 A 8 A 50 A 5 s 2 mOhms 18 mOhms - -40°C ~ 85°C - - - Surface Mount 0.127" L x 0.101" W (3.22mm x 2.58mm) - 0.047" (1.20mm) -
MF-NSML550/6-2

MF-NSML550/6-2

PTC RESET FUSE 6V 5.5A 1206

Bourns Inc.

3,235 -
RFQ
MF-NSML550/6-2

Datasheet

1206 (3216 Metric), Concave Multifuse®, MF-NSML/X Tape & Reel (TR) Active Polymeric 6V 5.5 A 11 A 50 A 5 s 2 mOhms 10 mOhms - -40°C ~ 85°C - - - Surface Mount 0.128" L x 0.063" W (3.25mm x 1.60mm) - 0.039" (1.00mm) -
MF-LSMF260/16X-2

MF-LSMF260/16X-2

2920 RESETTABLE SMD PPTC 2.6A/16

Bourns Inc.

3,000 -
RFQ
MF-LSMF260/16X-2

Datasheet

2920 (7351 Metric), Concave Multifuse®, MF-LSMF Tape & Reel (TR) Active Polymeric 16V 2.6 A - - - - - - -40°C ~ 85°C Automotive AEC-Q200 - Surface Mount 0.290" L x 0.202" W (7.36mm x 5.12mm) - - -
TRF250-145US-B-0.5

TRF250-145US-B-0.5

PTC RESET FUSE 60V 145MA RADIAL

Littelfuse Inc.

1,890 -
RFQ
TRF250-145US-B-0.5

Datasheet

Radial, Disc PolySwitch®, TRF250 Bag Active Polymeric 60V (250V Int) 145 mA 290 mA 3 A 4 s 3.5 Ohms 14 Ohms - -40°C ~ 85°C - - - Through Hole 0.236" L x 0.150" W (6.00mm x 3.80mm) 0.394" (10.00mm) - 0.197" (5.00mm)
MF-LSMF125/33X-2

MF-LSMF125/33X-2

2920 RESETTABLE SMD PPTC 1.25A/3

Bourns Inc.

4,457 -
RFQ
MF-LSMF125/33X-2

Datasheet

2920 (7351 Metric), Concave Multifuse®, MF-LSMF Tape & Reel (TR) Active Polymeric 33V 1.25 A - - - - - - -40°C ~ 85°C Automotive AEC-Q200 - Surface Mount 0.290" L x 0.202" W (7.36mm x 5.12mm) - - -
TCF250-120T-B-0.5

TCF250-120T-B-0.5

PTC RESET FUSE 60V 120MA SMD

Littelfuse Inc.

1,216 -
RFQ
TCF250-120T-B-0.5

Datasheet

Nonstandard SMD PolySwitch®, TCF250 Bag Active Polymeric 60V (250V Int) 120 mA 240 mA 3 A 600 ms 6.3 Ohms 18 Ohms - -40°C ~ 85°C - - - Surface Mount 0.217" L x 0.217" W (5.50mm x 5.50mm) - 0.091" (2.30mm) -
MF-LSMF200/24X-2

MF-LSMF200/24X-2

2920 RESETTABLE SMD PPTC 2.0A/24

Bourns Inc.

2,839 -
RFQ
MF-LSMF200/24X-2

Datasheet

2920 (7351 Metric), Concave Multifuse®, MF-LSMF Tape & Reel (TR) Active Polymeric 24V 2 A - - - - - - -40°C ~ 85°C Automotive AEC-Q200 - Surface Mount 0.290" L x 0.202" W (7.36mm x 5.12mm) - - -
0ZRV0012FF1E

0ZRV0012FF1E

SENSOR PTC RADIAL

Bel Fuse Inc.

3,000 -
RFQ
0ZRV0012FF1E

Datasheet

Radial, Disc 0ZRV Bulk Active Ceramic 277V (305V Int) 120 mA 300 mA 1.2 A 18 s 3 Ohms 12 Ohms - -20°C ~ 85°C - - AEC-Q200 Through Hole 0.319" L x 0.150" W (8.10mm x 3.80mm) 0.504" (12.80mm) - 0.201" (5.10mm)
0ZRV0016FF1E

0ZRV0016FF1E

SENSOR PTC RADIAL

Bel Fuse Inc.

3,000 -
RFQ
0ZRV0016FF1E

Datasheet

Radial, Disc 0ZRV Bulk Active Ceramic 277V (305V Int) 160 mA 370 mA 1.6 A 18 s 2.3 Ohms 8 Ohms - -20°C ~ 85°C - - AEC-Q200 Through Hole 0.291" L x 0.150" W (7.40mm x 3.80mm) 0.559" (14.20mm) - 0.201" (5.10mm)
TRF250-120T-RF-B-0.5

TRF250-120T-RF-B-0.5

PTC RESET FUSE 60V 120MA RADIAL

Littelfuse Inc.

6,560 -
RFQ
TRF250-120T-RF-B-0.5

Datasheet

Radial, Disc PolySwitch®, TRF250 Bag Active Polymeric 60V (250V Int) 120 mA 240 mA 3 A 900 ms 6 Ohms 16 Ohms - -40°C ~ 85°C - - - Through Hole 0.256" L x 0.181" W (6.50mm x 4.60mm) 0.433" (11.00mm) - 0.197" (5.00mm)
MF-RX250/72-0-14

MF-RX250/72-0-14

FUSE PTC RESETTABLE

Bourns Inc.

2,933 -
RFQ
MF-RX250/72-0-14

Datasheet

Radial, Disc MF-RX/72 Bulk Active - 72V 2.5 A 5 A 40 A 15.6 s - - - - - - - Through Hole 0.839" L x 0.122" W (21.30mm x 3.10mm) 1.039" (26.40mm) - 0.402" (10.20mm)
TRF250-120UT

TRF250-120UT

PTC RESET FUSE 60V 120MA RADIAL

Littelfuse Inc.

1,960 -
RFQ
TRF250-120UT

Datasheet

Radial, Disc PolySwitch®, TRF250 Bag Active Polymeric 60V (250V Int) 120 mA 240 mA 3 A 1.5 s 7 Ohms 16 Ohms - -40°C ~ 85°C - - - Through Hole 0.236" L x 0.150" W (6.00mm x 3.80mm) 0.394" (10.00mm) - 0.197" (5.00mm)
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