PFRA.065.3 Polymeric PTC Resettable Fuse 60V 650mA Radial

Part Overview

The PFRA.065.3 is a polymeric PTC resettable fuse manufactured by SCHURTER Inc., rated for 60V maximum voltage and 650mA hold current in a through-hole radial disc package. This part is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. The PFRA.065.3 shares core electrical and mechanical specifications with active alternatives that maintain functional compatibility while offering improved product availability and support.

Substiute Parts

PFRA.065.3

SCHURTER Inc.In Stock: 1065PFRA.065.3 Datasheet

Current PartRFQ

PFRA.065.2

SCHURTER Inc.In Stock: 1037PFRA.065.2 Datasheet

DirectRFQ

MF-R065-AP

Bourns Inc.In Stock: 2153MF-R065-AP Datasheet

Parametric EquivalentRFQ

MF-RX065/72-AP-17

Bourns Inc.In Stock: 777MF-RX065/72-AP-17 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PFRA.065.3 is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match):

• Voltage - Max: 60V
• Current - Hold (Ih) (Max): 650 mA
• Current - Trip (It): 1.3 A
• Time to Trip: 5.3 s
• Resistance - Initial (Ri) (Min): 270 mOhms
• Resistance - Post Trip (R1) (Max): 720 mOhms

Mechanical Parameters (Must Match):

• Mounting Type: Through Hole
• Package / Case: Radial, Disc
• Size / Dimension: 0.382" Dia x 0.122" T (9.70mm x 3.10mm)
• Lead Spacing: 0.201" (5.10mm)

Compliance Parameters (Must Match):

• RoHS Status: ROHS3 Compliant
• Type: Polymeric

The following parts meet these criteria and are classified as direct substitutes:

1. PFRA.065.2 (SCHURTER Inc.) - Direct manufacturer equivalent with identical electrical and mechanical specifications. Active product status.
2. MF-R065-AP (Bourns Inc.) - Parametric equivalent with identical electrical and mechanical specifications. Active product status.
3. MF-RX065/72-AP-17 (Bourns Inc.) - Parametric equivalent with higher voltage rating (72V) and identical current/thermal characteristics. Suitable for applications where voltage headroom is beneficial.

Parameter Comparison

Engineering Selection Recommendations

PFRA.065.2 is the primary substitute for direct replacement. It is manufactured by SCHURTER Inc., the original manufacturer of the PFRA.065.3, and maintains identical electrical and mechanical specifications. The part is active and widely available. Approval agencies include cURus and TUV certifications.

MF-R065-AP (Bourns Inc. Multifuse® series) is a parametric equivalent suitable for applications requiring an alternative manufacturer source. All electrical and mechanical parameters are identical to the PFRA.065.3. The part is active with cURus and TUV approvals.

MF-RX065/72-AP-17 (Bourns Inc. Multifuse® series) is suitable for applications where higher voltage margin is beneficial. The 72V maximum voltage rating exceeds the 60V requirement of the original part while maintaining identical current and thermal characteristics. This part carries expanded approvals including cUL and UL, and includes AEC-Q200 automotive qualification. The higher voltage rating does not compromise performance in 60V applications and provides additional design margin.

Frequently Asked Questions (FAQ)

Q: Can PFRA.065.2 be used as a direct replacement for PFRA.065.3?

A: Yes. PFRA.065.2 is a direct substitute with identical electrical and mechanical specifications. Both parts are manufactured by SCHURTER Inc. and share the same core electrical characteristics: 60V maximum voltage, 650mA hold current, 1.3A trip current, and 5.3s trip time. The primary difference is product status; PFRA.065.3 is obsolete while PFRA.065.2 is active.

Q: What is the difference between MF-R065-AP and MF-RX065/72-AP-17?

A: Both are Bourns Multifuse® products with identical electrical performance at the PFRA.065.3 specification level. The MF-RX065/72-AP-17 has a higher maximum voltage rating of 72V compared to 60V for the MF-R065-AP. Both maintain the same 650mA hold current, 1.3A trip current, and 5.3s trip time. The MF-RX065/72-AP-17 includes additional certifications (cUL, UL) and AEC-Q200 automotive qualification.

Q: Are all substitute parts compatible with the same PCB footprint?

A: Yes. All substitute parts share identical mechanical specifications: 0.382" diameter, 0.122" thickness, and 0.201" lead spacing. They are all through-hole radial disc packages and mount identically on PCBs designed for the PFRA.065.3.

Q: Which substitute part should be selected for new designs?

A: Selection depends on manufacturer preference and supply chain strategy. PFRA.065.2 maintains continuity with the original SCHURTER manufacturer. MF-R065-AP and MF-RX065/72-AP-17 provide alternative sourcing through Bourns. For applications requiring automotive qualification, MF-RX065/72-AP-17 includes AEC-Q200 certification.

Q: Do all substitute parts meet RoHS3 compliance?

A: Yes. PFRA.065.2, MF-R065-AP, and MF-RX065/72-AP-17 are all ROHS3 compliant.

Q: What is the packaging difference between PFRA.065.2 and the other substitutes?

A: PFRA.065.2 is supplied in Cut Tape (CT) packaging. MF-R065-AP is supplied in Cut Tape (CT) packaging. MF-RX065/72-AP-17 is supplied in Tape & Box (TB) packaging. All three are suitable for production assembly; packaging selection depends on volume requirements and handling preferences.