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
LVR075S-1

LVR075S-1

PTC RESET FUSE 240V 750MA RADIAL

Littelfuse Inc.

9,034 -
RFQ
LVR075S-1

Datasheet

Radial, Disc PolySwitch®, LVR Bulk Obsolete Polymeric 240V (265V Int) 750 mA 1.5 A 7.5 A 18 s 316 mOhms 839 mOhms - -20°C ~ 85°C - - - Through Hole 0.450" L x 0.189" W (11.43mm x 4.80mm) 0.921" (23.40mm) - 0.200" (5.08mm)
TRF250-055T

TRF250-055T

PTC RESET FUSE 60V 55MA RADIAL

Littelfuse Inc.

9,520 -
RFQ
TRF250-055T

Datasheet

Radial, Disc PolySwitch®, TRF250 Bulk Active Polymeric 60V (250V Int) 55 mA 170 mA 3 A 3.5 s 15 Ohms 35 Ohms - -40°C ~ 85°C - - - Through Hole 0.228" Dia x 0.181" T (5.80mm x 4.60mm) 0.390" (9.90mm) - 0.197" (5.00mm)
MXP180

MXP180

PTC RESET FUSE 6V 1.8A STRAP

Littelfuse Inc.

2,496 -
RFQ

-

Strap PolySwitch®, MXP Bulk Obsolete Polymeric 6V 1.8 A 5.2 A 50 A 5 s 7 mOhms 24 mOhms - - - - - User Defined - 0.043" (1.10mm) - -
MXP270

MXP270

PTC RESET FUSE 6V 2.7A STRAP

Littelfuse Inc.

5,923 -
RFQ

-

Strap PolySwitch®, MXP Bulk Obsolete Polymeric 6V 2.7 A 6.2 A 50 A 2 s 6 mOhms 26 mOhms - - - - - User Defined - 0.043" (1.10mm) - -
MGP500

MGP500

PTC RESET FUSE 6V 5A STRAP

Littelfuse Inc.

4,129 -
RFQ

-

Strap PolySwitch®, MGP Bulk Obsolete Polymeric 6V 5 A 9.2 A 50 A 5 s 2.5 mOhms 13 mOhms - - - - - User Defined 0.591" L x 0.122" W (15.00mm x 3.11mm) 0.037" (0.95mm) - -
FEMTOSMDC035F-2

FEMTOSMDC035F-2

PTC RESET FUSE 6V 350MA 0603

Littelfuse Inc.

8,874 -
RFQ
FEMTOSMDC035F-2

Datasheet

0603 (1608 Metric), Concave PolySwitch®, femtoSMDC Tape & Reel (TR) Discontinued at Digi-Key Polymeric 6V 350 mA 700 mA 40 A 100 ms 280 mOhms 1 Ohms - - - - - Surface Mount 0.063" L x 0.032" W (1.60mm x 0.80mm) - 0.037" (0.95mm) -
MF-NSML380-2

MF-NSML380-2

PTC RESET FUSE 6V 3.8A 1206

Bourns Inc.

5,983 -
RFQ

-

1206 (3216 Metric), Concave Multifuse®, MF-NSML Tape & Reel (TR) Obsolete Polymeric 6V 3.8 A 8 A 50 A 5 s 1.5 mOhms 14 mOhms - -40°C ~ 85°C - - - Surface Mount 0.128" L x 0.063" W (3.25mm x 1.60mm) - 0.024" (0.60mm) -
MF-USML450-2

MF-USML450-2

PTC RESET FUSE 6V 4.5A 1210

Bourns Inc.

9,295 -
RFQ
MF-USML450-2

Datasheet

1210 (3225 Metric), Concave Multifuse®, MF-USML Tape & Reel (TR) Obsolete Polymeric 6V 4.5 A 9 A 50 A 2 s 1 mOhms 15 mOhms - -40°C ~ 85°C - - - Surface Mount 0.127" L x 0.102" W (3.22mm x 2.58mm) - 0.047" (1.20mm) -
MF-USML500-2

MF-USML500-2

PTC RESET FUSE 6V 5A 1210

Bourns Inc.

2,528 -
RFQ
MF-USML500-2

Datasheet

1210 (3225 Metric), Concave Multifuse®, MF-USML Tape & Reel (TR) Obsolete Polymeric 6V 5 A 10 A 50 A 2 s 1 mOhms 14.5 mOhms - -40°C ~ 85°C - - - Surface Mount 0.127" L x 0.102" W (3.22mm x 2.58mm) - 0.047" (1.20mm) -
MF-USML200-2

MF-USML200-2

PTC RESET FUSE 6V 2A 1210

Bourns Inc.

6,755 -
RFQ
MF-USML200-2

Datasheet

1210 (3225 Metric), Concave Multifuse®, MF-USML Tape & Reel (TR) Obsolete Polymeric 6V 2 A 4 A 50 A 3 s 5 mOhms 30 mOhms - -40°C ~ 85°C - - - Surface Mount 0.127" L x 0.102" W (3.22mm x 2.58mm) - 0.024" (0.60mm) -
MF-USML250-2

MF-USML250-2

PTC RESET FUSE 6V 2.5A 1210

Bourns Inc.

8,190 -
RFQ
MF-USML250-2

Datasheet

1210 (3225 Metric), Concave Multifuse®, MF-USML Tape & Reel (TR) Obsolete Polymeric 6V 2.5 A 5 A 50 A 3.5 s 4.5 mOhms 22 mOhms - -40°C ~ 85°C - - - Surface Mount 0.127" L x 0.102" W (3.22mm x 2.58mm) - 0.024" (0.60mm) -
MF-USML350-2

MF-USML350-2

PTC RESET FUSE 6V 3.5A 1210

Bourns Inc.

2,685 -
RFQ
MF-USML350-2

Datasheet

1210 (3225 Metric), Concave Multifuse®, MF-USML Tape & Reel (TR) Obsolete Polymeric 6V 3.5 A 7 A 50 A 2 s 3 mOhms 18 mOhms - -40°C ~ 85°C - - - Surface Mount 0.127" L x 0.102" W (3.22mm x 2.58mm) - 0.024" (0.60mm) -
B59673A0100B110

B59673A0100B110

PTC RESET FUSE

EPCOS - TDK Electronics

2,855 -
RFQ

-

- - Bulk Obsolete - - - - - - - - - - - - - - - - - -
PTGL04BD102N9N54B0

PTGL04BD102N9N54B0

PTC RESET FUSE RADIAL DISC

Murata Electronics

4,224 -
RFQ
PTGL04BD102N9N54B0

Datasheet

Radial, Disc POSISTOR®, PTGL Bulk Obsolete Ceramic - - - - - - - 1 kOhms -10°C ~ 60°C - - - Through Hole - - - -
MF-R010-0-A0

MF-R010-0-A0

PTC RESET FUSE 60V 100MA RADIAL

Bourns Inc.

2,552 -
RFQ
MF-R010-0-A0

Datasheet

Radial, Disc Multifuse®, MF-R Bulk Active Polymeric 60V 100 mA 200 mA 40 A 4 s 2.5 Ohms 7.5 Ohms - -40°C ~ 85°C - - - Through Hole 0.291" Dia x 0.122" T (7.40mm x 3.10mm) 0.500" (12.70mm) - 0.201" (5.10mm)
MF-R400-0-15

MF-R400-0-15

PTC RESET FUSE 30V 4A RADIAL

Bourns Inc.

6,088 -
RFQ
MF-R400-0-15

Datasheet

Radial, Disc Multifuse®, MF-R Bulk Active Polymeric 30V 4 A 8 A 40 A 12.7 s 10 mOhms 50 mOhms - -40°C ~ 85°C - - - Through Hole 0.567" L x 0.118" W (14.40mm x 3.00mm) 0.976" (24.80mm) - 0.201" (5.10mm)
MF-R075-2-14-99

MF-R075-2-14-99

PTC RESET FUSE 60V 750MA RADIAL

Bourns Inc.

4,785 -
RFQ
MF-R075-2-14-99

Datasheet

Radial, Disc Multifuse®, MF-R Tape & Reel (TR) Obsolete Polymeric 60V 750 mA 1.5 A 40 A 6.3 s 180 mOhms 600 mOhms - -40°C ~ 85°C - - - Through Hole 0.409" Dia x 0.122" T (10.40mm x 3.10mm) 0.630" (16.00mm) - 0.201" (5.10mm)
MF-R300-2-14-99

MF-R300-2-14-99

PTC RESET FUSE 30V 3A RADIAL

Bourns Inc.

3,661 -
RFQ
MF-R300-2-14-99

Datasheet

Radial, Disc Multifuse®, MF-R Tape & Reel (TR) Obsolete Polymeric 30V 3 A 6 A 40 A 10.8 s 20 mOhms 80 mOhms - -40°C ~ 85°C - - - Through Hole 0.472" L x 0.118" W (12.00mm x 3.00mm) 0.720" (18.30mm) - 0.201" (5.10mm)
MF-R400-2-14-99

MF-R400-2-14-99

PTC RESET FUSE 30V 4A RADIAL

Bourns Inc.

9,952 -
RFQ
MF-R400-2-14-99

Datasheet

Radial, Disc Multifuse®, MF-R Tape & Reel (TR) Obsolete Polymeric 30V 4 A 8 A 40 A 12.7 s 10 mOhms 50 mOhms - -40°C ~ 85°C - - - Through Hole 0.567" L x 0.118" W (14.40mm x 3.00mm) 0.976" (24.80mm) - 0.201" (5.10mm)
MF-R010-0-A0-99

MF-R010-0-A0-99

PTC RESET FUSE 60V 100MA RADIAL

Bourns Inc.

4,777 -
RFQ
MF-R010-0-A0-99

Datasheet

Radial, Disc Multifuse®, MF-R Bulk Obsolete Polymeric 60V 100 mA 200 mA 40 A 4 s 2.5 Ohms 7.5 Ohms - -40°C ~ 85°C - - - Through Hole 0.291" Dia x 0.122" T (7.40mm x 3.10mm) 0.500" (12.70mm) - 0.201" (5.10mm)
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