RLD60P250XF Equivalent & Substitute Parts

Part Overview

The RLD60P250XF is a Littelfuse Polymeric PTC Resettable Fuse rated for 60V maximum voltage with 2.5A hold current. This component is classified as Obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The part functions as a thermal protection device in Through Hole Radial, Disc configuration, suitable for applications requiring automatic circuit protection with resettable characteristics.

Substiute Parts

RLD60P250XF

LittelfuseIn Stock: 1020RLD60P250XF Datasheet

Current PartRFQ

60R250XMR

Littelfuse Inc.In Stock: 245460R250XMR Datasheet

DirectRFQ

72R250XMR

LittelfuseIn Stock: 311372R250XMR Datasheet

DirectRFQ

RXEF250-AP

Littelfuse Inc.In Stock: 956RXEF250-AP Datasheet

DirectRFQ

60R250XF

Littelfuse Inc.In Stock: 181960R250XF Datasheet

MFR RecommendedRFQ

MF-RX250/72-0

Bourns Inc.In Stock: 4130MF-RX250/72-0 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

• Voltage - Max: Must equal or exceed 60V
• Current - Hold (Ih) (Max): Must equal 2.5 A
• Current - Trip (It): Must equal 5 A
• Mounting Type: Must be Through Hole
• Package / Case: Must be Radial, Disc
• Lead Spacing: Must equal 0.402" (10.20mm)
• Operating Temperature Range: Must encompass -40°C ~ 85°C
• Resistance characteristics (Ri and R1): Must match specified ranges

The substitute parts are grouped into two categories:

Category 1 - Direct Voltage Match (60V): 60R250XF and 60R250XMR maintain the original 60V rating with identical electrical characteristics.

Category 2 - Higher Voltage Rating (72V): 72R250XMR, RXEF250-AP, and MF-RX250/72-0 provide 72V maximum voltage rating while maintaining all other electrical parameters. These are suitable for applications where the circuit voltage does not exceed 60V but higher voltage margin is acceptable.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation - 60R250XF (Littelfuse POLY-FUSE® 60R Series): This part provides direct electrical and mechanical compatibility with the RLD60P250XF while offering Active product status and ROHS3 compliance. The 60V rating maintains the original design specification without voltage margin increase. Littelfuse manufacturer continuity ensures consistent performance characteristics.

Secondary Recommendation - 60R250XMR (Littelfuse POLY-FUSE® 60R Series): Functionally equivalent to 60R250XF with identical electrical parameters and Active status. Supplied in Cut Tape packaging, suitable for automated assembly processes. ROHS3 compliant with MSL 1 rating.

Alternative for Higher Voltage Margin - 72R250XMR (Littelfuse POLY-FUSE® 72R Series): Provides 12V additional voltage headroom while maintaining all other electrical characteristics. Active product status and ROHS3 compliance. Suitable for applications where circuit voltage remains at or below 60V but design margin enhancement is required.

Cross-Manufacturer Alternative - MF-RX250/72-0 (Bourns Multifuse® MF-RX/72 Series): Offers 72V rating with equivalent electrical performance. Active status and ROHS3 compliance. Expands sourcing options through multi-manufacturer availability. Approval agencies include UL in addition to cURus and TUV.

Specialized Application - RXEF250-AP (Littelfuse PolySwitch® RXEF Series): Provides 72V rating with expanded approval agency coverage (CQC, CSA, TUV, UL). Lead spacing of 0.400" (10.15mm) represents a 0.05mm deviation from the standard 0.402" specification. Suitable for applications requiring broader international certifications.

Frequently Asked Questions (FAQ)

Q: Can I use a 72V rated substitute in a 60V circuit? A: Yes. The 72R250XMR, RXEF250-AP, and MF-RX250/72-0 are rated for 72V maximum voltage and function correctly in circuits operating at 60V or below. The higher voltage rating provides additional design margin without affecting circuit operation.

Q: What is the difference between 60R250XF and 60R250XMR? A: Both parts are Littelfuse POLY-FUSE® 60R series with identical electrical specifications and 60V rating. The primary difference is packaging: 60R250XF is supplied in Bulk, while 60R250XMR is supplied in Cut Tape (CT). Selection depends on assembly process requirements.

Q: Is the RLD60P250XF still available? A: The RLD60P250XF is classified as Obsolete. Active substitutes with equivalent or superior specifications are available from multiple manufacturers. 60R250XF is the manufacturer-recommended replacement.

Q: Does the RXEF250-AP lead spacing difference affect compatibility? A: The RXEF250-AP has 0.400" (10.15mm) lead spacing compared to the standard 0.402" (10.20mm). This 0.05mm difference is within typical PCB tolerance for Through Hole radial components but should be verified against specific board design specifications.

Q: Are all substitute parts RoHS compliant? A: The original RLD60P250XF is RoHS non-compliant. All substitute parts (60R250XF, 60R250XMR, 72R250XMR, RXEF250-AP, and MF-RX250/72-0) are ROHS3 compliant, meeting current environmental regulations.

Q: Which substitute offers the broadest international certification? A: The RXEF250-AP provides the most comprehensive approval agency coverage with CQC, CSA, TUV, and UL certifications, compared to cURus and TUV for most other options.

Q: Can I mix different substitute parts in the same design? A: All substitute parts maintain identical electrical characteristics (2.5A hold current, 5A trip current, 15.6s trip time, 50mOhms initial resistance, 130mOhms post-trip resistance). Mechanical compatibility should be verified for specific PCB layouts, particularly regarding lead spacing and disc diameter variations.