Equivalent & Substitute Parts for RLD60P010XFF

Part Overview

The RLD60P010XFF is a polymeric PTC resettable fuse manufactured by Littelfuse Inc., part of the POLY-FUSE® RLD60 series. This component is rated for 60V maximum voltage with a 100 mA hold current and is designed for through-hole radial disc mounting. The RLD60P010XFF is currently listed as obsolete, making identification of active equivalent and substitute parts essential for ongoing design support and procurement.

Key Parameters

Parameter	Value
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
Operating Temperature	-40°C ~ 85°C
Mounting Type	Through Hole
Package / Case	Radial, Disc
Size / Dimension	0.291" Dia x 0.122" T (7.40mm x 3.10mm)
Lead Spacing	0.201" (5.10mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the RLD60P010XFF is determined by strict equivalence across the following electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - Max: 60V (exact match required)
Current - Hold (Ih) (Max): 100 mA (exact match required)
Current - Trip (It): 200 mA (exact match required)
Resistance - Initial (Ri) (Min): 2.5 Ohms (exact match required)
Resistance - Post Trip (R1) (Max): 7.5 Ohms (exact match required)
Time to Trip: 4 s (exact match required)
Operating Temperature: -40°C ~ 85°C (exact match required)
Mounting Type: Through Hole (exact match required)
Package / Case: Radial, Disc (exact match required)
Size / Dimension: 0.291" Dia x 0.122" T (7.40mm x 3.10mm) (exact match required)
Lead Spacing: 0.201" (5.10mm) (exact match required)

Parts meeting all these criteria are classified as direct parametric equivalents. Parts with different current ratings, resistance values, or time-to-trip specifications are listed as reference alternatives but do not qualify as direct substitutes for the RLD60P010XFF.

Parameter Comparison

Part Number	Manufacturer	Series	Voltage - Max	Current - Hold (Ih) (Max)	Current - Trip (It)	Time to Trip	Resistance - Initial (Ri) (Min)	Resistance - Post Trip (R1) (Max)	Operating Temperature	Size / Dimension	Lead Spacing	Product Status	Packaging
RLD60P010XFF	Littelfuse Inc.	POLY-FUSE®, RLD60	60V	100 mA	200 mA	4 s	2.5 Ohms	7.5 Ohms	-40°C ~ 85°C	0.291" Dia x 0.122" T (7.40mm x 3.10mm)	0.201" (5.10mm)	Obsolete	-
RXEF010-AP	Littelfuse	PolySwitch®, RXEF	60V	100 mA	200 mA	4 s	2.5 Ohms	7.5 Ohms	-40°C ~ 85°C	0.291" Dia x 0.118" T (7.40mm x 3.00mm)	0.199" (5.05mm)	Active	Cut Tape (CT)
60R010XPR	Littelfuse Inc.	POLY-FUSE®, 60R	60V	100 mA	200 mA	4 s	2.5 Ohms	7.5 Ohms	-40°C ~ 85°C	0.291" Dia x 0.122" T (7.40mm x 3.10mm)	0.201" (5.10mm)	Active	Cut Tape (CT)
PFRA.010	SCHURTER Inc.	PFRA	60V	100 mA	200 mA	4 s	2.5 Ohms	7.5 Ohms	-40°C ~ 85°C	0.291" Dia x 0.122" T (7.40mm x 3.10mm)	0.201" (5.10mm)	Active	Bulk
PFRA.010.2	SCHURTER Inc.	PFRA	60V	100 mA	200 mA	4 s	2.5 Ohms	7.5 Ohms	-40°C ~ 85°C	0.291" Dia x 0.122" T (7.40mm x 3.10mm)	0.201" (5.10mm)	Active	Cut Tape (CT)

Engineering Selection Recommendations

Direct Parametric Equivalents (Recommended for RLD60P010XFF Replacement):

The following parts meet all electrical and mechanical parameters of the RLD60P010XFF and are suitable for direct substitution:

60R010XPR (Littelfuse Inc., POLY-FUSE® 60R series): Active product status with identical electrical specifications and mechanical dimensions. Approval agencies: cURus. RoHS3 compliant. Available in Cut Tape packaging with 3400 units in stock.
PFRA.010 (SCHURTER Inc., PFRA series): Active product status with identical electrical specifications and mechanical dimensions. Approval agencies: cURus, TUV. RoHS3 compliant. Available in Bulk packaging with 1685 units in stock.
PFRA.010.2 (SCHURTER Inc., PFRA series): Active product status with identical electrical specifications and mechanical dimensions. Approval agencies: cURus, TUV. RoHS3 compliant. Available in Cut Tape packaging with 879 units in stock.

Alternative with Minor Mechanical Variation:

RXEF010-AP (Littelfuse, PolySwitch® RXEF series): Active product status with identical electrical specifications. Thickness is 0.118" (3.00mm) versus 0.122" (3.10mm) and lead spacing is 0.199" (5.05mm) versus 0.201" (5.10mm). These minor dimensional differences may require PCB layout verification. Approval agencies: CQC, CSA, TUV, UL. RoHS3 compliant. Available in Cut Tape packaging with 720 units in stock.

All recommended substitutes are RoHS3 compliant and maintain the -40°C to 85°C operating temperature range of the original part.

Frequently Asked Questions (FAQ)

Q: Can RXEF010-AP be used as a direct replacement for RLD60P010XFF?

A: RXEF010-AP matches all electrical parameters exactly but has minor dimensional variations. The thickness is 0.118" instead of 0.122", and lead spacing is 0.199" instead of 0.201". These differences are within typical manufacturing tolerances but require verification against your PCB layout and mechanical constraints before implementation.

Q: What is the difference between PFRA.010 and PFRA.010.2?

A: Both parts are electrically and mechanically identical. The primary difference is packaging: PFRA.010 is supplied in Bulk, while PFRA.010.2 is supplied in Cut Tape (CT). Select based on your procurement and assembly requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All recommended substitute parts—60R010XPR, PFRA.010, PFRA.010.2, and RXEF010-AP—are RoHS3 compliant, matching the compliance status of the original RLD60P010XFF.

Q: Why is the RLD60P010XFF listed as obsolete?

A: The RLD60P010XFF is an older product designation. Active equivalents from both Littelfuse (60R010XPR, RXEF010-AP) and SCHURTER (PFRA.010, PFRA.010.2) provide the same electrical and mechanical functionality with current manufacturing support.

Q: Which substitute offers the best availability?

A: 60R010XPR has the highest inventory at 3400 units in stock. PFRA.010 and PFRA.010.2 offer 1685 and 879 units respectively. RXEF010-AP has 720 units available.

Q: Do all substitutes have the same approval certifications?

A: No. 60R010XPR and PFRA series parts carry cURus certification. PFRA.010 and PFRA.010.2 additionally carry TUV certification. RXEF010-AP carries CQC, CSA, TUV, and UL certifications. Verify that the selected substitute meets your specific regulatory requirements.

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