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PFRX.160 Polymeric PTC Resettable Fuse Equivalent & Substitute Parts
Part Overview
The PFRX.160 is a polymeric PTC resettable fuse manufactured by SCHURTER Inc., rated for 60V at 1.6A hold current with through-hole radial disc mounting. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The PFRX.160 series has been superseded by active production alternatives that maintain electrical and mechanical compatibility within specified parameter tolerances.
Substiute Parts
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) |
Substitute Part Grouping Explanation
Substitute parts for the PFRX.160 are classified into three categories based on electrical and mechanical parameter alignment:
Direct Manufacturer Substitutes maintain identical electrical specifications (60V, 1.6A hold current, 3.2A trip current, 11.4s trip time, 90 mOhms initial resistance, 220 mOhms post-trip resistance) with active product status. These include PTR060V0160-BK and PTR060V0160-BK1 from Eaton - Electronics Division, and PFRY.160 from SCHURTER Inc. (which operates at 72V maximum voltage, providing higher voltage margin while maintaining all other electrical parameters).
Similar Manufacturer Substitutes from Littelfuse Inc. (60R160XMR, 60R185XMR, 60R300XF, 60R375XH) and Eaton (PTR060V0160-TR1) maintain the 60V voltage rating and 1.6A hold current specification but vary in trip current, trip time, and initial resistance based on their specific current rating. These are suitable where the higher current ratings do not conflict with circuit design requirements.
Parametric Equivalents from Bel Fuse Inc. (0ZRR0160FF1A) and YAGEO (BK60-160-DZ) provide complete electrical and mechanical parameter matching to the PFRX.160, with active product status and full compliance certifications.
Parameter Comparison
| Part Number | Manufacturer | Voltage - Max | Current - Hold (Ih) | Current - Trip (It) | Time to Trip | Resistance - Initial (Ri) | Resistance - Post Trip (R1) | Lead Spacing | Product Status |
|---|---|---|---|---|---|---|---|---|---|
| PFRX.160 | SCHURTER Inc. | 60V | 1.6 A | 3.2 A | 11.4 s | 90 mOhms | 220 mOhms | 0.201" (5.10mm) | Obsolete |
| PFRY.160 | SCHURTER Inc. | 72V | 1.6 A | 3.2 A | 11.4 s | 90 mOhms | 220 mOhms | 0.201" (5.10mm) | Active |
| PTR060V0160-BK | Eaton - Electronics Division | 60V | 1.6 A | 3.2 A | 11.4 s | 90 mOhms | 220 mOhms | 0.197" (5.00mm) | Active |
| PTR060V0160-BK1 | Eaton - Electronics Division | 60V | 1.6 A | 3.2 A | 11.4 s | 90 mOhms | 220 mOhms | 0.197" (5.00mm) | Active |
| 60R160XMR | Littelfuse Inc. | 60V | 1.6 A | 3.2 A | 11.4 s | 90 mOhms | 220 mOhms | 0.201" (5.10mm) | Active |
| 60R185XMR | Littelfuse Inc. | 60V | 1.85 A | 3.7 A | 12.6 s | 80 mOhms | 190 mOhms | 0.201" (5.10mm) | Active |
| 60R300XF | Littelfuse Inc. | 60V | 3 A | 6 A | 19.8 s | 40 mOhms | 100 mOhms | 0.402" (10.20mm) | Active |
| 60R375XH | Littelfuse Inc. | 60V | 3.75 A | 7.5 A | 24 s | 30 mOhms | 80 mOhms | 0.402" (10.20mm) | Active |
| PTR060V0160-TR1 | Eaton - Electronics Division | 60V | 1.6 A | 3.2 A | 11.4 s | 90 mOhms | 220 mOhms | 0.197" (5.00mm) | Active |
| 0ZRR0160FF1A | Bel Fuse Inc. | 60V | 1.6 A | 3.2 A | 11.4 s | 90 mOhms | 220 mOhms | 0.201" (5.10mm) | Active |
| BK60-160-DZ | YAGEO | 60V | 1.6 A | 3.2 A | 11.4 s | 90 mOhms | 220 mOhms | 0.201" (5.10mm) | Active |
Engineering Selection Recommendations
For direct replacement of the obsolete PFRX.160 without circuit modification, select from parts with identical electrical parameters: PTR060V0160-BK, PTR060V0160-BK1, 60R160XMR, PTR060V0160-TR1, 0ZRR0160FF1A, or BK60-160-DZ. All maintain 60V maximum voltage, 1.6A hold current, 3.2A trip current, and 11.4 second trip time.
PFRY.160 from SCHURTER Inc. provides an alternative with elevated 72V maximum voltage rating while preserving all other electrical specifications, suitable for applications requiring higher voltage margin.
For applications where higher current handling is acceptable, 60R185XMR (1.85A hold), 60R300XF (3A hold), and 60R375XH (3.75A hold) from Littelfuse Inc. offer active product status with 60V voltage rating. These require verification that circuit design tolerates the increased hold and trip current thresholds.
All recommended substitutes carry active product status and maintain RoHS3 compliance. Certifications include cURus, TUV, and UL approvals across the substitute portfolio. Lead spacing variations (0.197" to 0.402") must be verified against PCB layout constraints.
Frequently Asked Questions (FAQ)
Q: Can PTR060V0160-BK directly replace PFRX.160 in existing designs?
A: Yes. PTR060V0160-BK maintains identical electrical specifications (60V, 1.6A hold, 3.2A trip, 11.4s trip time, 90 mOhms initial resistance, 220 mOhms post-trip resistance) and through-hole radial disc mounting. Lead spacing differs by 0.004" (0.197" vs 0.201"), which is within typical PCB tolerance for radial component placement.
Q: What is the difference between PFRY.160 and PFRX.160?
A: PFRY.160 operates at 72V maximum voltage compared to PFRX.160 at 60V. All other electrical parameters remain identical: 1.6A hold current, 3.2A trip current, 11.4 second trip time, and 90 mOhms initial resistance. PFRY.160 is active production status. Use PFRY.160 when higher voltage margin is required.
Q: Are Littelfuse 60R300XF and 60R375XH suitable substitutes?
A: These parts share the 60V voltage rating and through-hole radial mounting but differ in hold current (3A and 3.75A respectively versus 1.6A), trip current, trip time, and resistance values. They are suitable only if circuit design accommodates higher current thresholds and longer trip times. Lead spacing is 0.402" (10.20mm) versus 0.201" (5.10mm) for PFRX.160, requiring PCB layout verification.
Q: What packaging options are available for PFRX.160 substitutes?
A: Substitute parts are available in Bulk, Cut Tape (CT), and Tape & Reel (TR) packaging. PTR060V0160-BK and PTR060V0160-BK1 are supplied in Bulk. PTR060V0160-TR1 is supplied in Tape & Reel. Littelfuse 60R160XMR is supplied in Cut Tape. Select packaging based on procurement and assembly requirements.
Q: Do all substitutes meet the same compliance standards as PFRX.160?
A: All recommended substitutes carry RoHS3 compliance and cURus/TUV certifications. PFRX.160 lists CSA, TUV, and UR approvals. Bel Fuse 0ZRR0160FF1A adds UL certification and AEC-Q200 automotive qualification. YAGEO BK60-160-DZ carries UL certification. Verify specific certification requirements for your application.
Q: Can I use 0ZRR0160FF1A or BK60-160-DZ as direct replacements?
A: Yes. Both parts provide complete electrical and mechanical parameter matching to PFRX.160: 60V, 1.6A hold current, 3.2A trip current, 11.4 second trip time, 90 mOhms initial resistance, 220 mOhms post-trip resistance, and 0.201" (5.10mm) lead spacing. Both are active production status with full compliance certifications.
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