Equivalent & Substitute Parts for RXE010

Part Overview

The RXE010 is a polymeric PTC resettable fuse manufactured by Littelfuse Inc., rated for 60V maximum voltage and 100 mA hold current. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The RXE010 series provides overcurrent protection through automatic resetting functionality in through-hole radial disc configuration.

Key Parameters

Parameter	RXE010 Specification
Voltage - Max	60V
Current - Hold (Ih) (Max)	100 mA
Current - Trip (It)	200 mA
Current - Max	40 A
Time to Trip	4 s
Resistance - Initial (Ri) (Min)	2.5 Ohms
Resistance - Post Trip (R1) (Max)	7.5 Ohms
Mounting Type	Through Hole
Package / Case	Radial, Disc
Size / Dimension	0.291" Dia x 0.118" T (7.40mm x 3.00mm)
Lead Spacing	0.199" (5.05mm)

Substitute Part Grouping Explanation

Substitution eligibility for the RXE010 is determined by strict equivalence across the following critical parameters:

Voltage - Max: 60V (or higher rating acceptable for backward compatibility)
Current - Hold (Ih) (Max): 100 mA
Current - Trip (It): 200 mA
Current - Max: 40 A
Time to Trip: 4 s
Resistance - Initial (Ri) (Min): 2.5 Ohms
Resistance - Post Trip (R1) (Max): 7.5 Ohms
Mounting Type: Through Hole
Package / Case: Radial, Disc

All substitute parts listed maintain these electrical specifications. Physical dimensions show minor variations within acceptable tolerances for through-hole radial disc mounting. The 0ZRC0010FF1E variant operates at 90V maximum voltage, providing enhanced voltage margin while maintaining all other electrical parameters.

Parameter Comparison

Parameter	RXE010	RXEF010	60R010XU	0ZRC0010FF1E	MF-R010	PFRA.010
Manufacturer	Littelfuse Inc.	Littelfuse	Littelfuse Inc.	Bel Fuse Inc.	Bourns Inc.	SCHURTER Inc.
Series	PolySwitch®, RXE	PolySwitch®, RXEF	POLY-FUSE®, 60R	0ZRC	Multifuse®, MF-R	PFRA
Product Status	Obsolete	Active	Active	Active	Active	Active
Voltage - Max	60V	60V	60V	90V	60V	60V
Current - Hold (Ih) (Max)	100 mA	100 mA	100 mA	100 mA	100 mA	100 mA
Current - Trip (It)	200 mA	200 mA	200 mA	200 mA	200 mA	200 mA
Current - Max	40 A	40 A	40 A	40 A	40 A	40 A
Time to Trip	4 s	4 s	4 s	4 s	4 s	4 s
Resistance - Initial (Ri) (Min)	2.5 Ohms	2.5 Ohms	2.5 Ohms	2.5 Ohms	2.5 Ohms	2.5 Ohms
Resistance - Post Trip (R1) (Max)	7.5 Ohms	7.5 Ohms	7.5 Ohms	7.5 Ohms	7.5 Ohms	7.5 Ohms
Operating Temperature	Not specified	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	Radial, Disc	Radial, Disc	Radial, Disc	Radial, Disc	Radial, Disc	Radial, Disc
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Approval Agency	CSA, TUV, UL	CQC, CSA, TUV, UL	cURus	cURus	cURus, TUV	cURus, TUV
Inventory Status	916 Pcs	26300 Pcs	6400 Pcs	16834 Pcs	17180 Pcs	1685 Pcs

Engineering Selection Recommendations

All listed substitute parts maintain electrical equivalence to the RXE010 across voltage, current, resistance, and trip characteristics. Selection should prioritize active product status and compliance requirements:

RXEF010 provides direct Littelfuse PolySwitch series continuity with active product status, ROHS3 compliance, and highest inventory availability (26300 units). This part is the primary recommended substitute for direct replacement applications.

60R010XU and MF-R010 offer active alternatives from established manufacturers (Littelfuse POLY-FUSE and Bourns Multifuse series respectively) with ROHS3 compliance and substantial inventory levels. Both are suitable for new designs requiring RoHS3 certification.

0ZRC0010FF1E from Bel Fuse Inc. provides 90V maximum voltage rating, exceeding the RXE010 specification while maintaining all other electrical parameters. This part includes AEC-Q200 automotive qualification and is appropriate for applications requiring enhanced voltage margin or automotive-grade reliability.

PFRA.010 from SCHURTER Inc. completes the substitute portfolio with ROHS3 compliance and TUV certification. Inventory availability is lower (1685 units) compared to other alternatives.

All substitute parts are RoHS3 compliant, addressing the non-compliance status of the obsolete RXE010. Selection between active alternatives depends on design requirements, supply chain preferences, and certification needs.

Frequently Asked Questions (FAQ)

Q: Can RXEF010 be used as a direct replacement for RXE010?

A: Yes. RXEF010 maintains identical electrical specifications (60V, 100 mA hold current, 200 mA trip current, 4 s trip time, 2.5 Ohms initial resistance, 7.5 Ohms post-trip resistance) and through-hole radial disc mounting. RXEF010 is active product status with ROHS3 compliance and superior inventory availability.

Q: What is the difference between 60R010XU and RXEF010?

A: Both parts maintain identical electrical specifications. 60R010XU is from the Littelfuse POLY-FUSE series versus RXEF010 from the PolySwitch series. Physical dimensions show minor variations: 60R010XU height is 0.500" (12.70mm) versus RXEF010 at 0.457" (11.60mm). Both are ROHS3 compliant and active products.

Q: Why is 0ZRC0010FF1E rated for 90V instead of 60V?

A: 0ZRC0010FF1E maintains all electrical specifications of the RXE010 while providing higher maximum voltage rating (90V versus 60V). This part is suitable for applications requiring enhanced voltage margin or where circuit voltage may exceed 60V. All other parameters remain equivalent.

Q: Are all substitute parts RoHS3 compliant?

A: All listed substitute parts are ROHS3 compliant. The original RXE010 is RoHS non-compliant. Substitution with any listed part addresses RoHS compliance requirements for new designs and production.

Q: What certifications do these parts carry?

A: RXEF010 carries CQC, CSA, TUV, and UL approvals. 60R010XU, 0ZRC0010FF1E, MF-R010, and PFRA.010 carry cURus certification. MF-R010 and PFRA.010 additionally carry TUV certification. 0ZRC0010FF1E includes AEC-Q200 automotive qualification.

Q: Can these parts be used interchangeably in existing RXE010 designs?

A: Yes, provided physical mounting dimensions are verified for PCB layout compatibility. Lead spacing and height variations are within acceptable tolerances for through-hole radial disc mounting. Electrical performance is equivalent across all specifications.

Q: Which substitute part has the best inventory availability?

A: RXEF010 has the highest inventory level at 26300 units, followed by MF-R010 at 17180 units and 0ZRC0010FF1E at 16834 units. PFRA.010 has the lowest availability at 1685 units.

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