HVR250P120CF Polymeric PTC Resettable Fuse Equivalent & Substitute Parts

Part Overview

The HVR250P120CF is a polymeric PTC resettable fuse manufactured by Littelfuse Inc., rated for 60V (250V internal) with a 120 mA hold current. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing circuit protection applications. The part operates across a temperature range of -40°C to 85°C and is approved by cURus and TUV agencies with ROHS3 compliance.

Substiute Parts

HVR250P120CF

Littelfuse Inc.In Stock: 1068HVR250P120CF Datasheet

Current PartRFQ

250R120ZR

Littelfuse Inc.In Stock: 1119250R120ZR Datasheet

DirectRFQ

0ZRF0011FF1E

Bel Fuse Inc.In Stock: 7170ZRF0011FF1E Datasheet

MFR RecommendedRFQ

0ZRF0011FF2B

Bel Fuse Inc.In Stock: 8730ZRF0011FF2B Datasheet

MFR RecommendedRFQ

0ZRF0012FF1E

Bel Fuse Inc.In Stock: 9090ZRF0012FF1E Datasheet

MFR RecommendedRFQ

0ZRF0012FF2B

Bel Fuse Inc.In Stock: 11260ZRF0012FF2B Datasheet

MFR RecommendedRFQ

0ZRF0015FF1E

Bel Fuse Inc.In Stock: 9260ZRF0015FF1E Datasheet

MFR RecommendedRFQ

0ZRF0015FF2B

Bel Fuse Inc.In Stock: 12080ZRF0015FF2B Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the HVR250P120CF is determined by the following critical parameters:

Voltage Rating: All substitute parts must maintain 60V maximum voltage rating to ensure equivalent circuit protection capability.

Current - Hold (Ih): The 120 mA hold current is the primary functional specification. Substitute parts are grouped into two categories: exact 120 mA matches and 110 mA alternatives with slightly lower hold current specifications.

Mounting and Package: All substitutes maintain through-hole radial disc configuration, ensuring mechanical compatibility with existing PCB layouts.

Thermal and Compliance Requirements: Operating temperature range (-40°C to 85°C), cURus/TUV approval, and ROHS3 compliance are maintained across all substitute options.

Time to Trip and Current - Trip (It): These parameters vary among substitutes but remain within acceptable operational ranges for polymeric PTC fuse technology.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute - Littelfuse 250R120ZR: This part is the direct functional equivalent from the original manufacturer. It maintains identical voltage, hold current, and resistance specifications while offering active product status. The extended time-to-trip (2.5 s vs. 1.5 s) provides slightly slower response but remains within acceptable polymeric PTC fuse operation. This option is recommended for applications requiring minimal design changes.

Secondary Substitutes - Bel Fuse 0ZRF Series (120 mA Hold Current): The 0ZRF0012FF1E and 0ZRF0012FF2B maintain the exact 120 mA hold current specification with identical initial resistance (4 Ohms). These parts are cross-manufacturer alternatives with active status and full compliance certifications. Packaging options (Box or Tape & Reel) accommodate different procurement workflows.

Alternative Substitutes - Bel Fuse 0ZRF Series (110 mA Hold Current): The 0ZRF0011FF1E and 0ZRF0011FF2B provide 110 mA hold current, representing a 8.3% reduction from the original specification. These are suitable for applications where slightly lower hold current is acceptable within circuit design margins.

Higher Current Alternative - Bel Fuse 0ZRF0015FF Series (150 mA Hold Current): The 0ZRF0015FF1E and 0ZRF0015FF2B offer 150 mA hold current for applications requiring higher current capacity. These parts are not direct equivalents but are listed as manufacturer-recommended alternatives for circuits tolerating increased hold current specifications.

All substitute parts maintain cURus and TUV approvals, ROHS3 compliance, and the required operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can I use 250R120ZR as a direct replacement for HVR250P120CF?

A: Yes. The 250R120ZR maintains identical voltage rating (60V), hold current (120 mA), and resistance specifications. The primary difference is time-to-trip (2.5 s vs. 1.5 s), which is within acceptable polymeric PTC fuse operation. This is the recommended direct substitute from the original manufacturer.

Q: What is the difference between the Bel Fuse 0ZRF0012FF1E and 0ZRF0012FF2B?

A: Both parts are electrically identical with 120 mA hold current and 60V rating. The difference is packaging: 0ZRF0012FF1E is supplied in Box format, while 0ZRF0012FF2B is supplied in Tape & Reel (TR) format. Select based on procurement and assembly requirements.

Q: Can I use the 0ZRF0011FF series (110 mA) instead of 120 mA parts?

A: The 0ZRF0011FF series provides 110 mA hold current, which is 8.3% lower than the original specification. This substitution is acceptable only if circuit design margins accommodate the reduced hold current. Verify that normal operating current remains below 110 mA to prevent nuisance trips.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts are ROHS3 compliant and maintain cURus and TUV approval certifications, meeting regulatory requirements for equivalent applications.

Q: What is the significance of the 250V internal rating on the HVR250P120CF?

A: The 250V internal rating indicates the component's internal voltage withstand capability. The 60V maximum operating voltage is the specified external circuit rating. All substitutes maintain the 60V external rating required for circuit protection.

Q: Can I use the 150 mA 0ZRF0015FF series as a substitute?

A: The 0ZRF0015FF series (150 mA hold current) is not a direct equivalent but is listed as a manufacturer-recommended alternative. Use only if circuit design accommodates the 25% increase in hold current and the corresponding change in trip characteristics.