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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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-RX110 Bourns Inc.

MF-RX110

PTC RESET FUSE 60V 1.1A RADIAL

Bourns Inc.

8,856
RFQ
MF-RX110 Datasheet

Datasheet

Radial, Disc Multifuse®, MF-RX Bulk Obsolete Polymeric 60V 1.1 A 2.2 A 40 A 8.2 s 150 mOhms 380 mOhms - -40°C ~ 85°C - - - Through Hole 0.427" L x 0.122" W (10.84mm x 3.10mm) 0.662" (16.84mm) - 0.201" (5.10mm)
MF-RX135 Bourns Inc.

MF-RX135

PTC RESET FUSE 60V 1.35A RADIAL

Bourns Inc.

6,188
RFQ
MF-RX135 Datasheet

Datasheet

Radial, Disc Multifuse®, MF-RX Bulk Obsolete Polymeric 60V 1.35 A 2.7 A 40 A 9.6 s 120 mOhms 300 mOhms - -40°C ~ 85°C - - - Through Hole 0.483" L x 0.122" W (12.26mm x 3.10mm) 0.718" (18.26mm) - 0.201" (5.10mm)
MF-RX160 Bourns Inc.

MF-RX160

PTC RESET FUSE 60V 1.6A RADIAL

Bourns Inc.

2,371
RFQ
MF-RX160 Datasheet

Datasheet

Radial, Disc Multifuse®, MF-RX Bulk 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" L x 0.122" W (16.30mm x 3.10mm) 0.839" (21.30mm) - 0.201" (5.10mm)
MF-RX185 Bourns Inc.

MF-RX185

PTC RESET FUSE 60V 1.85A RADIAL

Bourns Inc.

7,292
RFQ
MF-RX185 Datasheet

Datasheet

Radial, Disc Multifuse®, MF-RX Bulk 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" L x 0.122" W (17.80mm x 3.10mm) 0.902" (22.90mm) - 0.201" (5.10mm)
MF-RX250 Bourns Inc.

MF-RX250

PTC RESET FUSE 60V 2.5A RADIAL

Bourns Inc.

3,349
RFQ
MF-RX250 Datasheet

Datasheet

Radial, Disc Multifuse®, MF-RX Bulk 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" L x 0.122" W (21.30mm x 3.10mm) 1.039" (26.40mm) - 0.402" (10.20mm)
MF-RX300 Bourns Inc.

MF-RX300

PTC RESET FUSE 60V 3A RADIAL

Bourns Inc.

8,869
RFQ
MF-RX300 Datasheet

Datasheet

Radial, Disc Multifuse®, MF-RX Bulk Obsolete Polymeric 60V 3 A 6 A 40 A 19.8 s 40 mOhms 100 mOhms - -40°C ~ 85°C - - - Through Hole 0.980" L x 0.122" W (24.90mm x 3.10mm) 1.181" (30.00mm) - 0.402" (10.20mm)
MF-RX375 Bourns Inc.

MF-RX375

PTC RESET FUSE 60V 3.75A RADIAL

Bourns Inc.

8,300
RFQ
MF-RX375 Datasheet

Datasheet

Radial, Disc Multifuse®, MF-RX Bulk 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" L x 0.122" W (28.40mm x 3.10mm) 1.319" (33.50mm) - 0.402" (10.20mm)
RGE300 Littelfuse Inc.

RGE300

PTC RESET FUSE 16V 3A RADIAL

Littelfuse Inc.

4,891
RFQ

-

Radial, Disc PolySwitch® Bulk Obsolete Polymeric 16V 3 A 5.1 A 100 A 1 s 38 mOhms - - - - - - Through Hole 0.260" L x 0.098" W (6.60mm x 2.50mm) 0.433" (11.00mm) - 0.199" (5.05mm)
RGE500 Littelfuse Inc.

RGE500

PTC RESET FUSE 16V 5A RADIAL

Littelfuse Inc.

5,556
RFQ

-

Radial, Disc PolySwitch® Bulk Obsolete Polymeric 16V 5 A 8.5 A 100 A 2 s 15 mOhms 34 mOhms - - - - - Through Hole 0.390" L x 0.098" W (9.90mm x 2.50mm) 0.563" (14.30mm) - 0.199" (5.05mm)
RGE700 Littelfuse Inc.

RGE700

PTC RESET FUSE 16V 7A RADIAL

Littelfuse Inc.

3,110
RFQ

-

Radial, Disc PolySwitch® Bulk Obsolete Polymeric 16V 7 A 11.9 A 100 A 3.5 s 8 mOhms 20 mOhms - - - - - Through Hole 0.441" L x 0.118" W (11.20mm x 3.00mm) 0.776" (19.70mm) - 0.201" (5.10mm)
RGE900 Littelfuse Inc.

RGE900

PTC RESET FUSE 16V 9A RADIAL

Littelfuse Inc.

4,880
RFQ

-

Radial, Disc PolySwitch® Bulk Obsolete Polymeric 16V 9 A 15.3 A 100 A 5.5 s 5 mOhms 14 mOhms - - - - - Through Hole 0.530" L x 0.100" W (13.50mm x 2.50mm) 0.854" (21.70mm) - 0.199" (5.05mm)
RGE1100 Littelfuse Inc.

RGE1100

PTC RESET FUSE 16V 11A RADIAL

Littelfuse Inc.

5,071
RFQ
RGE1100 Datasheet

Datasheet

Radial, Disc PolySwitch® Bulk Obsolete Polymeric 16V 11 A 18.7 A 100 A 7 s 3.7 mOhms 8.9 mOhms - - - - - Through Hole 0.669" L x 0.098" W (17.00mm x 2.50mm) 1.024" (26.00mm) - 0.199" (5.05mm)
TR250-080U Littelfuse Inc.

TR250-080U

PTC RESET FUSE 250V 80MA RADIAL

Littelfuse Inc.

8,714
RFQ
TR250-080U Datasheet

Datasheet

Radial, Disc PolySwitch® Bulk Obsolete Polymeric 250V (60V Int) 80 mA - 3 A 3 s 14 Ohms 33 Ohms - -40°C ~ 85°C - - - Through Hole 0.189" Dia x 0.150" T (4.80mm x 3.80mm) 0.366" (9.30mm) - 0.197" (5.00mm)
RXE110-1 Littelfuse Inc.

RXE110-1

PTC RESET FUSE 72V 1.1A RADIAL

Littelfuse Inc.

2,359
RFQ
RXE110-1 Datasheet

Datasheet

Radial, Disc PolySwitch®, RXE Bulk Obsolete Polymeric 72V 1.1 A 2.2 A 40 A 8.2 s 150 mOhms 380 mOhms - - - - - Through Hole 0.504" Dia x 0.118" T (12.80mm x 3.00mm) 0.689" (17.50mm) - 0.199" (5.05mm)
RUSB075 Littelfuse Inc.

RUSB075

PTC RESET FUSE 6V 750MA RADIAL

Littelfuse Inc.

7,653
RFQ
RUSB075 Datasheet

Datasheet

Radial, Disc PolySwitch® Bulk Obsolete Polymeric 6V 750 mA 1.3 A 40 A 400 ms 110 mOhms 230 mOhms - - - - - Through Hole 0.272" L x 0.118" W (6.90mm x 3.00mm) 0.449" (11.40mm) - 0.201" (5.10mm)
RUSB090 Littelfuse Inc.

RUSB090

PTC RESET FUSE 16V 900MA RADIAL

Littelfuse Inc.

5,190
RFQ
RUSB090 Datasheet

Datasheet

Radial, Disc PolySwitch® Bulk Obsolete Polymeric 16V 900 mA 1.8 A 40 A 1.2 s 70 mOhms 180 mOhms - - - - - Through Hole 0.291" L x 0.118" W (7.40mm x 3.00mm) 0.480" (12.20mm) - 0.199" (5.05mm)
RUSB120 Littelfuse Inc.

RUSB120

PTC RESET FUSE 6V 1.2A RADIAL

Littelfuse Inc.

8,991
RFQ
RUSB120 Datasheet

Datasheet

Radial, Disc PolySwitch® Bulk Obsolete Polymeric 6V 1.2 A 2 A 40 A 500 ms 70 mOhms 140 mOhms - - - - - Through Hole 0.272" Dia x 0.122" T (6.90mm x 3.10mm) 0.461" (11.70mm) - 0.201" (5.10mm)
RUSB135 Littelfuse Inc.

RUSB135

PTC RESET FUSE 16V 1.35A RADIAL

Littelfuse Inc.

3,383
RFQ
RUSB135 Datasheet

Datasheet

Radial, Disc PolySwitch® Bulk Obsolete Polymeric 16V 1.35 A 2.7 A 40 A 4.5 s 40 mOhms 115 mOhms - - - - - Through Hole 0.350" L x 0.118" W (8.90mm x 3.00mm) 0.532" (13.50mm) - 0.199" (5.05mm)
RUSB250 Littelfuse Inc.

RUSB250

PTC RESET FUSE 16V 2.5A RADIAL

Littelfuse Inc.

3,946
RFQ
RUSB250 Datasheet

Datasheet

Radial, Disc PolySwitch® Bulk Obsolete Polymeric 16V 2.5 A 5 A 40 A 40 s 20 mOhms 60 mOhms - - - - - Through Hole 0.449" L x 0.118" W (11.40mm x 3.00mm) 0.720" (18.30mm) - 0.199" (5.05mm)
RGE1400 Littelfuse Inc.

RGE1400

PTC RESET FUSE 16V 14A RADIAL

Littelfuse Inc.

7,578
RFQ

-

Radial, Disc PolySwitch® Bulk Obsolete Polymeric 16V 14 A 23.8 A 100 A 9 s 2.6 mOhms 6.4 mOhms - - - - - Through Hole 0.904" L x 0.114" W (22.96mm x 2.90mm) 1.102" (28.00mm) - 0.400" (10.15mm)
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PTC Resettable Fuses Electronic Components Sourcing and Lifecycle Support

FPGAX is a global sourcing partner specializing in FPGA and programmable logic solutions for engineering and manufacturing organizations worldwide. For customers sourcing PTC Resettable Fuses components, we support both current production requirements and long-term component availability across demanding product lifecycles.

Our sourcing approach combines traceability, supply stability, and technical coordination. FPGAX is certified to AS9120B, ISO 9001:2008, and ISO 14001 standards and supports procurement programs where continuity, documentation, and dependable component supply are important.

How FPGAX Supports PTC Resettable Fuses Requirements

  • Active component sourcing: support for current FPGA, programmable logic, and related semiconductor requirements.
  • End-of-life sourcing: assistance with obsolete and hard-to-find parts when designs must remain in production.
  • Lifecycle management: sourcing support during product transitions, allocation periods, and supply interruptions.
  • Design continuity: long-term supply support intended to reduce redesign pressure and production disruption.
  • Major programmable logic brands: sourcing coverage includes Xilinx, Intel/Altera, Lattice, Microchip, and QuickLogic.

Supply Support at a Glance

Requirement FPGAX Support
Current production Active FPGA, programmable logic, and semiconductor component sourcing
Legacy programs End-of-life and hard-to-find component sourcing
Supply continuity Lifecycle transition and long-term availability support
Quality requirements Traceable sourcing and quality-management processes

Focused on FPGA and Programmable Logic Supply

FPGAX focuses on helping customers maintain access to critical programmable devices throughout the full component lifecycle. Whether the requirement is for a current design, an established production program, or an older platform facing component obsolescence, our goal is to provide a stable sourcing path and help customers maintain design and manufacturing continuity.

PTC Resettable Fuses FAQ

Can FPGAX source both active and end-of-life PTC Resettable Fuses components?

Yes. FPGAX supports sourcing for both active components and end-of-life or hard-to-find parts, with an emphasis on maintaining supply continuity for engineering and manufacturing programs.

Which programmable logic manufacturers does FPGAX support?

Our core sourcing coverage includes major FPGA and programmable logic manufacturers such as Xilinx, Intel/Altera, Lattice, Microchip, and QuickLogic, subject to specific part requirements and availability.

How does FPGAX help with component lifecycle changes?

We support customers through lifecycle transitions by helping locate current or legacy supply, reducing exposure to supply disruptions, and supporting long-term availability for designs that need to remain in production.

What quality and traceability standards does FPGAX follow?

FPGAX states certification to AS9120B, ISO 9001:2008, and ISO 14001 standards. Our sourcing services are structured around traceability, stable supply, and quality-management requirements.

What information should I provide for a PTC Resettable Fuses sourcing request?

Providing the manufacturer part number, required quantity, target delivery schedule, and any lifecycle or traceability requirements helps us evaluate the sourcing request more efficiently.