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-SM200-2-99

MF-SM200-2-99

PTC RESET FUSE 15V 2A 2SMD

Bourns Inc.

9,230 -
RFQ
MF-SM200-2-99

Datasheet

2-SMD Multifuse®, MF-SM Tape & Reel (TR) Obsolete Polymeric 15V 2 A 4 A 100 A 12 s 45 mOhms 125 mOhms - -40°C ~ 85°C Automotive AEC-Q200 - Surface Mount 0.344" L x 0.264" W (8.75mm x 6.71mm) - 0.118" (3.00mm) -
MF-SM250-2-99

MF-SM250-2-99

PTC RESET FUSE 15V 2.5A 2SMD

Bourns Inc.

9,995 -
RFQ
MF-SM250-2-99

Datasheet

2-SMD Multifuse®, MF-SM Tape & Reel (TR) Obsolete Polymeric 15V 2.5 A 5 A 100 A 25 s 24 mOhms 85 mOhms - -40°C ~ 85°C Automotive AEC-Q200 - Surface Mount 0.344" L x 0.264" W (8.75mm x 6.71mm) - 0.118" (3.00mm) -
MICROSMD200LR-2

MICROSMD200LR-2

PTC RESET FUSE 6V 2A 1210

Littelfuse Inc.

4,287 -
RFQ
MICROSMD200LR-2

Datasheet

1210 (3225 Metric), Concave PolySwitch®, LoRho Tape & Reel (TR) Obsolete Polymeric 6V 2 A 5 A 50 A 4 s 6 mOhms - - - - - - Surface Mount 0.127" L x 0.102" W (3.22mm x 2.58mm) - 0.039" (1.00mm) -
MICROSMD250LR-A-2

MICROSMD250LR-A-2

PTC RESET FUSE 6V 2.5A 1210

Littelfuse Inc.

5,450 -
RFQ
MICROSMD250LR-A-2

Datasheet

1210 (3225 Metric), Concave PolySwitch®, LoRho Tape & Reel (TR) Obsolete Polymeric 6V 2.5 A 5.2 A 50 A 5 s 5 mOhms - - - - - - Surface Mount 0.127" L x 0.102" W (3.22mm x 2.58mm) - 0.039" (1.00mm) -
MICROSMD350LR-2

MICROSMD350LR-2

PTC RESET FUSE 6V 3.5A 1206

Littelfuse Inc.

4,388 -
RFQ
MICROSMD350LR-2

Datasheet

1210 (3225 Metric) PolySwitch®, microSMD Tape & Reel (TR) Obsolete Polymeric 6V 3.5 A 9 A 50 A 10 s 2.5 mOhms - - - - - - Surface Mount 0.127" L x 0.102" W (3.22mm x 2.58mm) - 0.039" (1.00mm) -
MICROSMD350LR-D-2

MICROSMD350LR-D-2

PTC RESET FUSE 6V 3.5A 1206

Littelfuse Inc.

3,592 -
RFQ

-

1210 (3225 Metric) PolySwitch®, microSMD Tape & Reel (TR) Obsolete Polymeric 6V 3.5 A 9 A 50 A 10 s 2.5 mOhms 11 mOhms - -40°C ~ 80°C - - - Surface Mount 0.127" L x 0.102" W (3.22mm x 2.58mm) - 0.039" (1.00mm) -
MICROSMD380LR-2

MICROSMD380LR-2

PTC RESET FUSE 6V 3.8A 1206

Littelfuse Inc.

2,797 -
RFQ

-

1210 (3225 Metric) PolySwitch®, microSMD Tape & Reel (TR) Obsolete Polymeric 6V 3.8 A 9 A 50 A 10 s 2.5 mOhms 9 mOhms - -40°C ~ 80°C - - - Surface Mount 0.127" L x 0.102" W (3.22mm x 2.58mm) - 0.039" (1.00mm) -
MICROSMD400LR-2

MICROSMD400LR-2

PTC RESET FUSE 6V 4A 1206

Littelfuse Inc.

9,209 -
RFQ

-

1210 (3225 Metric) PolySwitch®, microSMD Tape & Reel (TR) Obsolete Polymeric 6V 4 A 9 A 50 A 10 s 2.5 mOhms 9.9 mOhms - -40°C ~ 80°C - - - Surface Mount 0.127" L x 0.102" W (3.22mm x 2.58mm) - 0.039" (1.00mm) -
MICROSMD450LR-2

MICROSMD450LR-2

PTC RESET FUSE 5V 4.5A 1210

Littelfuse Inc.

3,655 -
RFQ
MICROSMD450LR-2

Datasheet

1210 (3225 Metric), Concave PolySwitch®, microSMD Tape & Reel (TR) Obsolete Polymeric 5V 4.5 A 9 A 50 A 2 s 2 mOhms 8 mOhms - -40°C ~ 80°C - - - Surface Mount 0.127" L x 0.102" W (3.22mm x 2.58mm) - 0.039" (1.00mm) -
MICROSMD550LR-2

MICROSMD550LR-2

PTC RESET FUSE 5V 5.5A 1210

Littelfuse Inc.

4,648 -
RFQ

-

1210 (3225 Metric), Concave PolySwitch®, microSMD Tape & Reel (TR) Obsolete Polymeric 5V 5.5 A 11 A 50 A 2 s 2 mOhms 6.5 mOhms - -40°C ~ 80°C - - - Surface Mount 0.127" L x 0.102" W (3.22mm x 2.58mm) - 0.039" (1.00mm) -
MICROSMD600LR-2

MICROSMD600LR-2

PTC RESET FUSE 6V 6A 1210

Littelfuse Inc.

2,275 -
RFQ

-

1210 (3225 Metric), Concave PolySwitch®, microSMD Tape & Reel (TR) Obsolete Polymeric 6V 6 A 12 A 50 A 2 s 2 mOhms 6.3 mOhms - -40°C ~ 80°C - - - Surface Mount 0.127" L x 0.102" W (3.22mm x 2.58mm) - 0.039" (1.00mm) -
MF-USML600-2

MF-USML600-2

PTC RESET FUSE 6V 6A 1210

Bourns Inc.

3,433 -
RFQ
MF-USML600-2

Datasheet

1210 (3225 Metric), Concave Multifuse®, MF-USML Tape & Reel (TR) Obsolete Polymeric 6V 6 A 12 A 50 A 2 s 1 mOhms 14 mOhms - -40°C ~ 85°C - - - Surface Mount 0.127" L x 0.102" W (3.22mm x 2.58mm) - 0.047" (1.20mm) -
MF-USML380/6-2

MF-USML380/6-2

PTC RESET FUSE 6V 3.8A 1210

Bourns Inc.

8,339 -
RFQ
MF-USML380/6-2

Datasheet

1210 (3225 Metric), Concave Multifuse®, MF-USML/X Tape & Reel (TR) Active Polymeric 6V 3.8 A 7.6 A 50 A 5 s 2 mOhms 20 mOhms - -40°C ~ 85°C - - - Surface Mount 0.127" L x 0.101" W (3.22mm x 2.58mm) - 0.047" (1.20mm) -
MF-USML260/6-2

MF-USML260/6-2

PTC RESET FUSE 6V 2.6A 1210

Bourns Inc.

5,397 -
RFQ
MF-USML260/6-2

Datasheet

1210 (3225 Metric), Concave Multifuse®, MF-USML/X Tape & Reel (TR) Active Polymeric 6V 2.6 A 5.2 A 50 A 5 s 4 mOhms 30 mOhms - -40°C ~ 85°C - - - Surface Mount 0.127" L x 0.101" W (3.22mm x 2.58mm) - 0.031" (0.80mm) -
MF-USML450/6-2

MF-USML450/6-2

PTC RESET FUSE 6V 4.5A 1210

Bourns Inc.

7,967 -
RFQ
MF-USML450/6-2

Datasheet

1210 (3225 Metric), Concave Multifuse®, MF-USML/X Tape & Reel (TR) Active Polymeric 6V 4.5 A 9 A 50 A 2 s 2 mOhms 14 mOhms - -40°C ~ 85°C - - - Surface Mount 0.127" L x 0.101" W (3.22mm x 2.58mm) - 0.047" (1.20mm) -
MF-LSMF330X-2

MF-LSMF330X-2

2920 RESETTABLE SMD PPTC 3.3A/6V

Bourns Inc.

5,645 -
RFQ
MF-LSMF330X-2

Datasheet

2920 (7351 Metric), Concave Multifuse®, MF-LSMF Tape & Reel (TR) Active Polymeric - 3.3 A - - - - - - -40°C ~ 85°C Automotive AEC-Q200 - Surface Mount 0.290" L x 0.202" W (7.36mm x 5.12mm) - - -
MF-RG1100-AP-14

MF-RG1100-AP-14

PTC RESETTABLE 11A 16V RADIAL LE

Bourns Inc.

2,325 -
RFQ
MF-RG1100-AP-14

Datasheet

Radial, Disc Multifuse®, MF-RG Tape & Box (TB) Active Polymeric 16V 11 A 18.7 A 100 A 7 s 3.7 mOhms 8.9 mOhms - -40°C ~ 85°C Automotive AEC-Q200 - Through Hole 0.689" L x 0.118" W (17.50mm x 3.00mm) 1.024" (26.00mm) - 0.201" (5.10mm)
MF-RG1100-2-14

MF-RG1100-2-14

PTC RESETTABLE 11A 16V RADIAL LE

Bourns Inc.

8,689 -
RFQ
MF-RG1100-2-14

Datasheet

Radial, Disc Multifuse®, MF-RG Tape & Reel (TR) Active Polymeric 16V 11 A 18.7 A 100 A 7 s 3.7 mOhms 8.9 mOhms - -40°C ~ 85°C Automotive AEC-Q200 - Through Hole 0.689" L x 0.118" W (17.50mm x 3.00mm) 1.024" (26.00mm) - 0.201" (5.10mm)
RL3006-50-30-25-PTO

RL3006-50-30-25-PTO

PTC RESET FUSE 25V RADIAL DISC

Amphenol Advanced Sensors (Thermometrics)

2,473 -
RFQ
RL3006-50-30-25-PTO

Datasheet

Radial, Disc PTO Bulk Obsolete Ceramic 25V - - - 35 s - - 50 Ohms - - - - Through Hole 0.350" Dia x 0.150" T (8.90mm x 3.80mm) 0.350" (8.89mm) - 0.250" (6.35mm)
YPBJ5.60T

YPBJ5.60T

PTC RESET FUSE 80V 130MA RADIAL

Amphenol Advanced Sensors (Thermometrics)

8,297 -
RFQ
YPBJ5.60T

Datasheet

Radial, Disc YP Tape & Reel (TR) Obsolete Ceramic 80V 130 mA 265 mA 4.3 A - - - 5.6 Ohms 0°C ~ 60°C - - - Through Hole 0.433" Dia x 0.138" T (11.00mm x 3.50mm) 0.492" (12.50mm) - 0.200" (5.08mm)
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