RLD60P065XFF Equivalent & Substitute Parts

Part Overview

The RLD60P065XFF 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 650 mA hold current and is designed for through-hole radial mounting in disc configuration. The product status is obsolete, making equivalent and substitute parts necessary for ongoing design support, maintenance, and new production applications requiring compatible electrical and mechanical characteristics.

Substiute Parts

RLD60P065XFF

Littelfuse Inc.In Stock: 726RLD60P065XFF Datasheet

Current PartRFQ

60R065XPR

Littelfuse Inc.In Stock: 421460R065XPR Datasheet

DirectRFQ

72R065XPR

Littelfuse Inc.In Stock: 222672R065XPR Datasheet

DirectRFQ

RXEF065-AP

LittelfuseIn Stock: 3156RXEF065-AP Datasheet

DirectRFQ

PFRA.065

SCHURTER Inc.In Stock: 1967PFRA.065 Datasheet

MFR RecommendedRFQ

PFRA.065.2

SCHURTER Inc.In Stock: 1037PFRA.065.2 Datasheet

MFR RecommendedRFQ

PFRA.075

SCHURTER Inc.In Stock: 1058PFRA.075 Datasheet

MFR RecommendedRFQ

PFRA.075.2

SCHURTER Inc.In Stock: 818PFRA.075.2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the RLD60P065XFF is determined by strict equivalence across the following critical parameters:

• Voltage - Max: 60V (primary electrical constraint)
• Current - Hold (Ih) (Max): 650 mA (functional protection threshold)
• Current - Trip (It): 1.3 A (trip response specification)
• Resistance - Initial (Ri) (Min): 310 mOhms (circuit performance baseline)
• Resistance - Post Trip (R1) (Max): 720 mOhms (post-trip behavior)
• Operating Temperature: -40°C ~ 85°C (environmental operating range)
• Mounting Type: Through Hole (PCB assembly compatibility)
• Package / Case: Radial, Disc (physical form factor)
• Lead Spacing: 0.201" (5.10mm) (board layout compatibility)

Parts meeting all these parameters are classified as direct equivalents. Parts with voltage ratings above 60V or current ratings above 650 mA are functional alternatives for applications where higher ratings are acceptable but do not represent direct substitutes.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalents (Electrical and Mechanical Match)

60R065XPR is the primary direct equivalent. Manufactured by Littelfuse Inc., it matches all critical parameters of the RLD60P065XFF and carries active product status. This part is available in Cut Tape (CT) packaging with 4200 units in stock. Both parts are ROHS3 compliant and carry cURus and TUV approvals.

PFRA.065 and PFRA.065.2 (SCHURTER Inc.) are manufacturer-recommended alternatives meeting the 60V, 650 mA electrical specification. Both are ROHS3 compliant with cURus and TUV approvals. PFRA.065 is available in Bulk packaging; PFRA.065.2 is available in Cut Tape (CT) packaging. The initial resistance (Ri) is lower at 270 mOhms compared to 310 mOhms, which may affect circuit performance in applications sensitive to quiescent current draw.

Functional Alternatives (Higher Voltage Rating)

72R065XPR and RXEF065-AP both operate at 72V maximum voltage while maintaining the 650 mA hold current specification. These parts are suitable for applications where the circuit voltage does not exceed 60V but higher voltage margin is desired. 72R065XPR is Littelfuse Inc. POLY-FUSE® series; RXEF065-AP is Littelfuse PolySwitch® series. Both are active products with ROHS3 compliance. RXEF065-AP carries expanded approvals (CQC, CSA, TUV, UL) and has a lead spacing of 0.199" (5.05mm), which is within tolerance of the 0.201" (5.10mm) specification.

Higher Current Rating Alternative

PFRA.075 and PFRA.075.2 (SCHURTER Inc.) are rated for 750 mA hold current at 60V. These parts are functional alternatives only when circuit design permits higher current thresholds. They are not direct substitutes due to different trip current (1.5 A vs. 1.3 A) and resistance characteristics.

Frequently Asked Questions (FAQ)

Q: Can 60R065XPR directly replace RLD60P065XFF?

A: Yes. 60R065XPR is a direct equivalent meeting all electrical and mechanical parameters: 60V maximum voltage, 650 mA hold current, 1.3 A trip current, 310 mOhms initial resistance, and 0.201" lead spacing. Both are ROHS3 compliant with cURus and TUV approvals. The primary difference is product status: RLD60P065XFF is obsolete while 60R065XPR is active with higher inventory availability.

Q: What is the difference between PFRA.065 and 60R065XPR?

A: Both meet the 60V, 650 mA electrical specification and 0.201" lead spacing. PFRA.065 is manufactured by SCHURTER Inc. while 60R065XPR is Littelfuse Inc. The key difference is initial resistance: PFRA.065 has 270 mOhms minimum versus 310 mOhms for 60R065XPR. In applications where quiescent current or power dissipation is critical, this difference may affect circuit performance. Both are ROHS3 compliant with equivalent approvals.

Q: Can I use 72R065XPR or RXEF065-AP in place of RLD60P065XFF?

A: These parts are functional alternatives, not direct substitutes. Both are rated for 72V maximum voltage while maintaining 650 mA hold current and 1.3 A trip current. They are suitable only if your circuit voltage does not exceed 60V and you accept the higher voltage rating. RXEF065-AP has a lead spacing of 0.199" (5.05mm) versus the specified 0.201" (5.10mm), which is within typical PCB tolerance but should be verified for your specific board layout.

Q: Why would I choose PFRA.075 over PFRA.065?

A: PFRA.075 is rated for 750 mA hold current versus 650 mA for PFRA.065. This is a functional alternative only when your circuit design permits higher current thresholds. PFRA.075 has different trip current (1.5 A vs. 1.3 A) and lower initial resistance (180 mOhms vs. 310 mOhms), making it unsuitable as a direct replacement for RLD60P065XFF.

Q: What packaging options are available?

A: 60R065XPR is available in Cut Tape (CT) packaging. PFRA.065 is available in Bulk packaging; PFRA.065.2 is available in Cut Tape (CT) packaging. Packaging selection depends on your procurement and assembly requirements. Both packaging formats are ROHS3 compliant.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts are ROHS3 compliant. Approval agencies include cURus, TUV, and for RXEF065-AP, additional certifications include CQC, CSA, and UL.