PFRA.075 Polymeric PTC Resettable Fuse 60V 750mA Radial

Part Overview

The PFRA.075 is a polymeric PTC resettable fuse manufactured by SCHURTER Inc., rated for 60V maximum voltage with a 750mA hold current (Ih). This through-hole radial disc component provides automatic overcurrent protection with a trip current (It) of 1.5A and operates across the temperature range of -40°C to 85°C. The part is ROHS3 compliant and holds active product status with 973 units in current inventory.

Equivalent and substitute parts are necessary when the PFRA.075 becomes unavailable, when alternative packaging formats are required, or when design specifications allow for compatible alternatives from different manufacturers that meet the same electrical and mechanical parameters.

Substiute Parts

PFRA.075

SCHURTER Inc.In Stock: 1058PFRA.075 Datasheet

Current PartRFQ

60R010XPR

Littelfuse Inc.In Stock: 349360R010XPR Datasheet

SimilarRFQ

60R025XPR

Littelfuse Inc.In Stock: 406160R025XPR Datasheet

SimilarRFQ

60R065XPR

Littelfuse Inc.In Stock: 421460R065XPR Datasheet

SimilarRFQ

60R075XPR

Littelfuse Inc.In Stock: 694460R075XPR Datasheet

SimilarRFQ

60R075XU

Littelfuse Inc.In Stock: 302660R075XU Datasheet

SimilarRFQ

60R090XPR

Littelfuse Inc.In Stock: 820360R090XPR Datasheet

SimilarRFQ

MF-R075

Bourns Inc.In Stock: 3178MF-R075 Datasheet

Parametric EquivalentRFQ

MF-RX075/72-0

Bourns Inc.In Stock: 2272MF-RX075/72-0 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PFRA.075 is determined by strict equivalence across the following critical parameters:

• Voltage - Max: 60V (allows 60V rated parts only; higher voltage ratings are not interchangeable downward)
• Current - Hold (Ih) (Max): 750 mA (exact match required for circuit protection integrity)
• Current - Trip (It): 1.5 A (exact match required)
• Time to Trip: 6.3 s (exact match required)
• Operating Temperature: -40°C ~ 85°C (must support full range)
• Mounting Type: Through Hole (mechanical compatibility)
• Package / Case: Radial, Disc (mechanical compatibility)
• Lead Spacing: 0.201" (5.10mm) (PCB footprint compatibility)
• Approval Agency: cURus, TUV (regulatory compliance)
• RoHS Status: ROHS3 Compliant (environmental compliance)

Parts are grouped into two categories: direct parametric equivalents (identical electrical and mechanical specifications) and similar manufacturer alternatives (same voltage and current ratings with minor dimensional variations that do not affect PCB mounting).

Parameter Comparison

Engineering Selection Recommendations

Direct Parametric Equivalents (Preferred)

MF-R075 (Bourns Inc.) is a direct parametric equivalent to PFRA.075. Both parts share identical electrical specifications (60V, 750mA Ih, 1.5A It, 6.3s trip time), identical initial resistance (180 mOhms minimum), and identical mechanical dimensions. Both hold cURus and TUV approval with ROHS3 compliance. This part is available in bulk packaging with 3136 units in inventory.

Voltage-Compatible Alternatives

MF-RX075/72-0 (Bourns Inc.) is rated for 72V maximum voltage while maintaining all other electrical parameters identical to PFRA.075 (750mA Ih, 1.5A It, 6.3s trip time, 180 mOhms initial resistance). This part is suitable for circuits designed to operate at 60V, as the higher voltage rating provides additional safety margin. Both parts hold cURus and TUV approval with ROHS3 compliance. This part is available in bulk packaging with 2236 units in inventory.

Packaging Alternatives

60R075XPR and 60R075XU (Littelfuse Inc., POLY-FUSE® 60R series) are electrically equivalent to PFRA.075 with identical voltage (60V), hold current (750mA), trip current (1.5A), and trip time (6.3s). Both parts hold cURus and TUV approval with ROHS3 compliance. The 60R075XU is available in bulk packaging (2956 units), while 60R075XPR is supplied in cut tape format (6866 units). Initial resistance is 250 mOhms minimum, which remains within acceptable operating parameters for this application class.

All substitute parts maintain through-hole radial disc mounting with 0.201" (5.10mm) lead spacing, ensuring PCB footprint compatibility with the original PFRA.075 design.

Frequently Asked Questions (FAQ)

Q: Can I use 60R075XPR or 60R075XU as direct replacements for PFRA.075?

A: Yes. Both Littelfuse parts maintain identical voltage (60V), hold current (750mA), trip current (1.5A), and trip time (6.3s) specifications. The initial resistance difference (250 mOhms vs. 180 mOhms) does not affect substitution compatibility. Both parts are ROHS3 compliant with cURus and TUV approval. The primary difference is packaging: 60R075XU is supplied in bulk, while 60R075XPR is supplied in cut tape format.

Q: What is the difference between 60R075XPR and 60R075XU?

A: Both parts are electrically identical. The difference is packaging format: 60R075XPR is supplied in cut tape (CT) format suitable for automated assembly, while 60R075XU is supplied in bulk format. Select based on your assembly process requirements.

Q: Can I substitute MF-RX075/72-0 for PFRA.075 in a 60V circuit?

A: Yes. MF-RX075/72-0 is rated for 72V maximum voltage and maintains all other electrical parameters identical to PFRA.075 (750mA Ih, 1.5A It, 6.3s trip time). The higher voltage rating is compatible with 60V circuits and provides additional safety margin. Both parts hold cURus and TUV approval with ROHS3 compliance.

Q: Are there any dimensional differences between PFRA.075 and its substitutes?

A: All substitute parts maintain the same lead spacing (0.201" / 5.10mm) for PCB footprint compatibility. Minor variations exist in disc diameter and height: PFRA.075 is 0.409" diameter × 0.122" thickness with 0.630" seated height; 60R075XPR and 60R075XU are 0.402" diameter × 0.122" thickness with 0.591" seated height; MF-R075 and MF-RX075/72-0 are 0.409" diameter × 0.122" thickness with 0.630" seated height. These variations do not affect PCB mounting compatibility.

Q: What certifications do the substitute parts hold?

A: All substitute parts (60R075XPR, 60R075XU, MF-R075, MF-RX075/72-0) hold cURus and TUV approval and are ROHS3 compliant, matching the regulatory compliance of PFRA.075.

Q: Which substitute part should I select for new designs?

A: For new designs, MF-R075 (Bourns Inc.) is the preferred choice as it provides direct parametric equivalence with identical electrical specifications and initial resistance (180 mOhms). For applications requiring higher voltage margin, MF-RX075/72-0 (72V rated) is suitable. For packaging flexibility, Littelfuse 60R series parts (60R075XPR in cut tape or 60R075XU in bulk) are available with higher inventory levels.