RLD60P160XF Equivalent & Substitute Parts

Part Overview

The RLD60P160XF is a polymeric PTC resettable fuse manufactured by Littelfuse Inc. in the POLY-FUSE® RLD60 series. This component is rated for 60V maximum voltage with a 1.6A hold current and is designed for through-hole radial mounting in disc configuration. The part is currently obsolete, making equivalent substitutes necessary for ongoing design support and component sourcing.

Key Parameters

Parameter	Value
Voltage - Max	60V
Current - Hold (Ih) (Max)	1.6 A
Current - Trip (It)	3.2 A
Current - Max	40 A
Time to Trip	11.4 s
Resistance - Initial (Ri) (Min)	90 mOhms
Resistance - Post Trip (R1) (Max)	220 mOhms
Operating Temperature	-40°C ~ 85°C
Mounting Type	Through Hole
Package / Case	Radial, Disc
Lead Spacing	0.201" (5.10mm)
Approval Agency	cURus, TUV

Substitute Part Grouping Explanation

Substitution eligibility for the RLD60P160XF is determined by the following critical parameters:

Voltage rating must equal or exceed 60V maximum
Current hold (Ih) must equal 1.6A
Current trip (It) must equal 3.2A
Time to trip must equal 11.4s
Resistance characteristics (Ri and R1) must match specified ranges
Operating temperature range must cover -40°C ~ 85°C
Mounting type must be through hole radial disc configuration
Lead spacing must be compatible with 0.201" (5.10mm) spacing

Three substitute parts meet these criteria with varying compliance and availability status.

Parameter Comparison

Parameter	RLD60P160XF	60R160XF	60R160XMR	RXEF160-AP	MF-RX160/72-0
Manufacturer	Littelfuse Inc.	Littelfuse Inc.	Littelfuse Inc.	Littelfuse Inc.	Bourns Inc.
Series	POLY-FUSE® RLD60	POLY-FUSE® 60R	POLY-FUSE® 60R	PolySwitch® RXEF	Multifuse® MF-RX/72
Voltage - Max	60V	60V	60V	72V	72V
Current - Hold (Ih) (Max)	1.6 A	1.6 A	1.6 A	1.6 A	1.6 A
Current - Trip (It)	3.2 A	3.2 A	3.2 A	3.2 A	3.2 A
Current - Max	40 A	40 A	40 A	40 A	40 A
Time to Trip	11.4 s	11.4 s	11.4 s	11.4 s	11.4 s
Resistance - Initial (Ri) (Min)	90 mOhms	90 mOhms	90 mOhms	90 mOhms	90 mOhms
Resistance - Post Trip (R1) (Max)	220 mOhms	220 mOhms	220 mOhms	220 mOhms	220 mOhms
Operating Temperature	-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
Package / Case	Radial, Disc	Radial, Disc	Radial, Disc	Radial, Disc	Radial, Disc
Lead Spacing	0.201" (5.10mm)	0.201" (5.10mm)	0.201" (5.10mm)	0.199" (5.05mm)	0.201" (5.10mm)
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Approval Agency	cURus, TUV	cURus, TUV	cURus, TUV	CQC, CSA, TUV, UL	cURus, TUV

Engineering Selection Recommendations

60R160XF (Littelfuse Inc., POLY-FUSE® 60R Series)

This part is the manufacturer-recommended direct replacement for the RLD60P160XF. It maintains identical electrical specifications and operating parameters while offering ROHS3 compliance and active product status. The 60R160XF is available in bulk packaging and provides the most direct functional equivalence with improved regulatory compliance.

60R160XMR (Littelfuse Inc., POLY-FUSE® 60R Series)

This variant offers identical electrical and thermal characteristics to the 60R160XF with the same ROHS3 compliance and active status. The primary distinction is cut tape packaging, which may be preferred for automated assembly processes. Dimensional specifications remain compatible with the original design.

RXEF160-AP (Littelfuse Inc., PolySwitch® RXEF Series)

This part operates at 72V maximum voltage, providing higher voltage margin than the original 60V specification. All other electrical parameters match the RLD60P160XF. The RXEF160-AP carries expanded approval certifications including CQC, CSA, TUV, and UL. Lead spacing is 0.199" (5.05mm), which is within tolerance of the original 0.201" (5.10mm) specification. This option is suitable for applications requiring enhanced regulatory coverage.

MF-RX160/72-0 (Bourns Inc., Multifuse® MF-RX/72 Series)

This cross-manufacturer substitute from Bourns Inc. provides 72V maximum voltage rating with identical electrical trip and resistance characteristics. The part maintains full ROHS3 compliance and REACH compliance status. Dimensional and lead spacing specifications are compatible with the original design. This option offers supply diversification through an alternative manufacturer.

Frequently Asked Questions (FAQ)

Q: Can I use a 72V rated fuse in place of the 60V RLD60P160XF?

A: Yes. The RXEF160-AP and MF-RX160/72-0 both operate at 72V maximum voltage and maintain all other electrical specifications identical to the original part. Higher voltage rating provides additional safety margin and does not affect circuit operation at 60V or below.

Q: What is the difference between 60R160XF and 60R160XMR?

A: Both parts are electrically and thermally identical. The primary difference is packaging: 60R160XF is supplied in bulk, while 60R160XMR is supplied in cut tape. Selection depends on assembly process requirements.

Q: Are all substitutes RoHS compliant?

A: The original RLD60P160XF is RoHS non-compliant. All four substitute parts (60R160XF, 60R160XMR, RXEF160-AP, and MF-RX160/72-0) are ROHS3 compliant, meeting current regulatory requirements.

Q: Will the lead spacing difference of RXEF160-AP affect PCB compatibility?

A: The RXEF160-AP has 0.199" (5.05mm) lead spacing compared to the original 0.201" (5.10mm). This 0.002" difference is within standard PCB tolerance and will not cause compatibility issues with existing through-hole designs.

Q: Which substitute offers the best supply availability?

A: MF-RX160/72-0 from Bourns Inc. currently has the highest inventory at 4859 pieces. The Littelfuse alternatives (60R160XF, 60R160XMR, and RXEF160-AP) each have inventory between 998 and 1677 pieces.

Q: Can I use these substitutes interchangeably in my design?

A: All four substitutes maintain the critical electrical parameters (1.6A hold current, 3.2A trip current, 11.4s trip time, and 90-220 mOhms resistance range). They are functionally interchangeable from an electrical standpoint. Verify packaging and lead spacing compatibility with your specific PCB design.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message