HVR250P120CRAF Equivalent & Substitute Parts

Part Overview

The HVR250P120CRAF is a polymeric PTC resettable fuse manufactured by Littelfuse Inc. in the POLY-FUSE® HVR250 series. This component is rated for 60V maximum voltage with a 120 mA hold current and is designed for through-hole radial mounting in disc configuration. The part is currently obsolete, making identification of active equivalent alternatives essential for ongoing design support and procurement.

Key Parameters

Parameter	Value
Voltage - Max	60V (250V Int)
Current - Hold (Ih) (Max)	120 mA
Current - Trip (It)	240 mA
Current - Max	3 A
Resistance - Initial (Ri) (Min)	7 Ohms
Resistance - Post Trip (R1) (Max)	16 Ohms
Operating Temperature	-40°C ~ 85°C
Mounting Type	Through Hole
Package / Case	Radial, Disc
Type	Polymeric
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the HVR250P120CRAF is determined by the following critical parameters:

Voltage Rating: Maximum voltage must be 60V or greater
Current - Hold (Ih): Must be 120 mA or within acceptable tolerance for the application
Mounting Type: Through hole radial configuration required
Package / Case: Radial disc format required
Type: Polymeric PTC resettable fuse technology
Operating Temperature Range: Must support -40°C ~ 85°C minimum
RoHS Compliance: ROHS3 compliance required

Substitute parts are grouped into two categories: direct Littelfuse equivalents (same manufacturer, active status) and cross-manufacturer alternatives from Bel Fuse Inc. (0ZRF series). All listed substitutes meet the core electrical and mechanical requirements for direct replacement in the HVR250P120CRAF application.

Parameter Comparison

Part Number	Manufacturer	Status	Voltage (Max)	Ih (mA)	It (mA)	Ri (Ohms)	R1 (Ohms)	Lead Spacing	Approval Agency
HVR250P120CRAF	Littelfuse Inc.	Obsolete	60V	120	240	7	16	0.217" (5.50mm)	cURus, TUV
250R120-RAZR	Littelfuse Inc.	Active	60V	120	240	7	16	0.201" (5.10mm)	cURus, TUV
TRF250-120	Littelfuse Inc.	Active	60V	120	240	4	16	0.197" (5.00mm)	CSA, TUV, UL
0ZRF0012FF1E	Bel Fuse Inc.	Active	60V	120	480	4	16	0.197" (5.00mm)	cURus, TUV
0ZRF0012FF2B	Bel Fuse Inc.	Active	60V	120	480	4	16	0.197" (5.00mm)	cURus, TUV
0ZRF0011FF1E	Bel Fuse Inc.	Active	60V	110	400	5	16	0.197" (5.00mm)	cURus, TUV
0ZRF0011FF2B	Bel Fuse Inc.	Active	60V	110	400	5	16	0.197" (5.00mm)	cURus, TUV
0ZRF0015FF1E	Bel Fuse Inc.	Active	60V	150	580	3	12	0.197" (5.00mm)	cURus, TUV
0ZRF0015FF2B	Bel Fuse Inc.	Active	60V	150	580	3	12	0.197" (5.00mm)	cURus, TUV

Engineering Selection Recommendations

Primary Recommendation: 250R120-RAZR (Littelfuse Inc.)

The 250R120-RAZR is the direct active equivalent from the original manufacturer. It maintains identical electrical specifications (120 mA Ih, 240 mA It, 60V rating) and is ROHS3 compliant with cURus and TUV approval. This part is available in Cut Tape packaging with 11,546 units in stock. Lead spacing differs slightly (0.201" vs. 0.217"), requiring PCB layout verification.

Secondary Recommendation: TRF250-120 (Littelfuse Inc.)

The TRF250-120 from the PolySwitch® TRF250 series provides identical hold and trip current specifications with expanded approval agency coverage (CSA, TUV, UL). Initial resistance is lower (4 Ohms vs. 7 Ohms), which may affect circuit behavior in sensitive applications. Lead spacing is 0.197" (5.00mm). This part has the highest inventory availability (45,100 units) and is supplied in Bag packaging.

Cross-Manufacturer Alternative: 0ZRF0012FF1E or 0ZRF0012FF2B (Bel Fuse Inc.)

The 0ZRF0012 series from Bel Fuse Inc. matches the 120 mA hold current specification exactly. Both FF1E (Box) and FF2B (Tape & Reel) variants are active with cURus and TUV approval. Trip current is higher (480 mA vs. 240 mA), which affects protection response timing. Initial resistance is 4 Ohms. These parts are suitable where cross-manufacturer qualification is acceptable.

Alternative for Lower Hold Current Applications: 0ZRF0011FF1E or 0ZRF0011FF2B (Bel Fuse Inc.)

If circuit design permits a 110 mA hold current, the 0ZRF0011 series offers lower initial resistance (5 Ohms) and is available in both Box and Tape & Reel formats with active status and cURus/TUV approval.

Alternative for Higher Hold Current Applications: 0ZRF0015FF1E or 0ZRF0015FF2B (Bel Fuse Inc.)

For applications requiring 150 mA hold current, the 0ZRF0015 series provides lower initial resistance (3 Ohms) and reduced post-trip resistance (12 Ohms max). Both Box and Tape & Reel variants are active with full compliance.

Frequently Asked Questions (FAQ)

Q: Can I use 250R120-RAZR as a direct replacement for HVR250P120CRAF?

A: Yes. The 250R120-RAZR maintains identical electrical specifications (120 mA Ih, 240 mA It, 60V rating, 16 Ohms max post-trip resistance). The primary consideration is lead spacing: 0.201" (5.10mm) versus the original 0.217" (5.50mm). PCB layout verification is required before implementation.

Q: What is the difference between TRF250-120 and 250R120-RAZR?

A: Both are Littelfuse products with identical hold and trip currents. TRF250-120 has lower initial resistance (4 Ohms vs. 7 Ohms), broader approval agency coverage (CSA, TUV, UL vs. cURus, TUV), and higher inventory availability. Lead spacing differs: 0.197" (5.00mm) for TRF250-120 versus 0.201" (5.10mm) for 250R120-RAZR.

Q: Can I substitute a Bel Fuse 0ZRF part for the Littelfuse HVR250P120CRAF?

A: Yes, provided the electrical specifications match your application requirements. The 0ZRF0012 series matches the 120 mA hold current exactly. However, trip current is higher (480 mA vs. 240 mA), affecting protection response timing. Cross-manufacturer substitution requires design review and qualification testing.

Q: What does the packaging designation mean (CT, Bag, Box, TR)?

A: CT = Cut Tape; Bag = bulk packaging; Box = individual box packaging; TR = Tape & Reel. Packaging affects procurement quantity, handling, and assembly process compatibility. Verify your assembly equipment supports the selected packaging format.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitutes are ROHS3 compliant. Littelfuse parts carry cURus and TUV approval (TRF250-120 adds CSA). Bel Fuse parts carry cURus and TUV approval. Compliance certifications are suitable for industrial and consumer applications within the specified operating temperature range (-40°C ~ 85°C).

Q: Why do some parts have different trip currents (It)?

A: Trip current is determined by the specific polymer formulation and device design. The HVR250P120CRAF has 240 mA trip current, while Bel Fuse 0ZRF0012 series has 480 mA. Higher trip current means the device takes longer to activate under fault conditions. Application circuit behavior may differ; design verification is necessary.

Q: Can I use parts with different hold currents (110 mA or 150 mA)?

A: Only if your circuit design permits deviation from the original 120 mA specification. The 0ZRF0011 series (110 mA) and 0ZRF0015 series (150 mA) are electrically compatible with the 60V rating and through-hole radial package, but hold current directly affects circuit protection response. Use only if application requirements explicitly allow this variation.

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