Littelfuse 021502.5VXP Ceramic Fuse 2.5A 250VAC 5x20mm - Equivalent & Substitute Parts

Part Overview

The Littelfuse 021502.5VXP is an active ceramic cartridge fuse rated for 2.5A at 250VAC with slow-blow response characteristics. The fuse is housed in a 5mm x 20mm form factor and requires a compatible holder for installation. This part is ROHS3 compliant and carries multiple international approvals including UL, CE, CSA, VDE, CCC, KC, PSE, and SEMKO certifications. Equivalent and substitute parts are identified based on matching electrical ratings, mechanical dimensions, response time characteristics, and approval agency compliance.

Key Parameters

Parameter	Specification
Current Rating	2.5 A
Voltage Rating (AC)	250 V
Package / Case	5mm x 20mm
Fuse Type	Cartridge, Ceramic
Response Time	Slow Blow
Mounting Type	Requires Holder
Breaking Capacity @ Rated Voltage	1.5kA
Operating Temperature Range	-55°C ~ 125°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following parameters: current rating (2.5A), AC voltage rating (250V), package dimensions (5mm x 20mm), fuse type (ceramic cartridge), response time (slow blow), and mounting requirement (holder-based installation). Parts are grouped into two categories:

Littelfuse Series 215 Equivalents: Parts 021502.5HXP, 021502.5MXP, and 021502.5TXP are direct parametric equivalents manufactured by Littelfuse. All three share identical electrical ratings, mechanical dimensions, response characteristics, breaking capacity, melting I²t value (22.29), DC cold resistance (0.0386 Ohms), operating temperature range, and approval agency certifications with the main part 021502.5VXP.

Cross-Manufacturer Equivalents: Parts from SCHURTER (0001.2508, 0001.2708.11), Bel Fuse (0659C2500-12), OptiFuse (TCC-2.5A, TCD-2.5A), and Conquer (VBS UDA 2.5A 250V) meet the core electrical and mechanical substitution criteria: 2.5A current rating, 250VAC voltage rating, 5mm x 20mm package, ceramic cartridge construction, slow-blow response, and 1.5kA breaking capacity. These parts carry overlapping international approvals and ROHS3 compliance.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Current Rating (A)	Voltage Rating AC (V)	Voltage Rating DC (V)	Package / Case	Response Time	Breaking Capacity @ Rated Voltage	Melting I²t	DC Cold Resistance (Ohms)	Operating Temperature	RoHS Status	Inventory (Pcs)
021502.5VXP	Littelfuse Inc.	2.5	250	—	5mm x 20mm	Slow Blow	1.5kA	22.29	0.0386	-55°C ~ 125°C	ROHS3 Compliant	886
021502.5HXP	Littelfuse Inc.	2.5	250	—	5mm x 20mm	Slow Blow	1.5kA	22.29	0.0386	-55°C ~ 125°C	ROHS3 Compliant	1298
021502.5MXP	Littelfuse Inc.	2.5	250	—	5mm x 20mm	Slow Blow	1.5kA	22.29	0.0386	-55°C ~ 125°C	ROHS3 Compliant	2300
021502.5TXP	Littelfuse Inc.	2.5	250	—	5mm x 20mm	Slow Blow	1.5kA	22.29	0.0386	-55°C ~ 125°C	ROHS3 Compliant	1169
0001.2508	SCHURTER Inc.	2.5	250	300	5mm x 20mm	Slow Blow	1.5kA	11.7	—	-55°C ~ 125°C	ROHS3 Compliant	1070
0001.2708.11	SCHURTER Inc.	2.5	250	300	5mm x 20mm	Slow Blow	1.5kA	11.7	—	-55°C ~ 125°C	ROHS3 Compliant	1971
0659C2500-12	Bel Fuse Inc.	2.5	250	—	5mm x 20mm	Slow Blow	1.5kA	25	0.036	-55°C ~ 125°C	ROHS3 Compliant	4490
TCC-2.5A	OptiFuse	2.5	250	—	5mm x 20mm	Slow Blow	100A	5.1183	0.0872	-55°C ~ 125°C	ROHS3 Compliant	1048
TCD-2.5A	OptiFuse	2.5	250	—	5mm x 20mm	Slow Blow	1.5kA	—	—	-55°C ~ 125°C	ROHS3 Compliant	1957
VBS UDA 2.5A 250V (PF)	Conquer	2.5	250	—	5mm x 20mm	Slow Blow	1.5kA	29.07	0.0384	-55°C ~ 125°C	ROHS3 Compliant	2066

Engineering Selection Recommendations

All listed substitute parts maintain active product status and ROHS3 compliance. Selection among Littelfuse Series 215 equivalents (021502.5HXP, 021502.5MXP, 021502.5TXP) is interchangeable based on availability and inventory levels, as these parts are parametrically identical to the main part 021502.5VXP.

Cross-manufacturer substitutes are suitable where approval agency certifications align with application requirements. SCHURTER parts (0001.2508, 0001.2708.11) provide additional DC voltage rating capability (300V DC) and carry CCC, cURus, VDE, and PSE certifications. Bel Fuse 0659C2500-12 offers high inventory availability (4490 pcs) with CCC, cURus, PSE, and VDE approvals. OptiFuse TCD-2.5A and TCC-2.5A carry cURus and UL certifications suitable for North American applications. Conquer VBS UDA 2.5A 250V (PF) provides the broadest approval agency coverage including BSI, CCC, CSA, KC, PSE, SEMKO, UL, and VDE.

Frequently Asked Questions (FAQ)

Q: Can 021502.5HXP, 021502.5MXP, and 021502.5TXP be used interchangeably with 021502.5VXP?

A: Yes. These three Littelfuse Series 215 parts are parametric equivalents with identical current rating (2.5A), voltage rating (250VAC), package dimensions (5mm x 20mm), response time (slow blow), breaking capacity (1.5kA), melting I²t (22.29), DC cold resistance (0.0386 Ohms), operating temperature range (-55°C ~ 125°C), and approval certifications. They are direct substitutes.

Q: What is the difference between Littelfuse and SCHURTER ceramic fuses in this list?

A: The primary difference is DC voltage rating. Littelfuse parts (021502.5VXP, 021502.5HXP, 021502.5MXP, 021502.5TXP) are rated for 250VAC only. SCHURTER parts (0001.2508, 0001.2708.11) are rated for 250VAC and 300VDC, providing broader DC application capability. Both share identical AC ratings, package dimensions, and response characteristics.

Q: Are OptiFuse TCC-2.5A and TCD-2.5A suitable replacements?

A: Both OptiFuse parts meet the core substitution criteria: 2.5A current rating, 250VAC voltage rating, 5mm x 20mm package, ceramic cartridge type, and slow-blow response. TCD-2.5A matches the 1.5kA breaking capacity of the main part. TCC-2.5A has a lower breaking capacity (100A) and higher DC cold resistance (0.0872 Ohms). Selection depends on application-specific breaking capacity requirements and approval agency needs (cURus, UL 248 for TCC; cURus, IEC 60127 for TCD).

Q: What does melting I²t indicate, and why do values vary among substitutes?

A: Melting I²t is a thermal characteristic indicating the fuse's energy absorption capacity before melting. Values range from 5.1183 (OptiFuse TCC-2.5A) to 29.07 (Conquer VBS UDA 2.5A 250V). All listed parts maintain slow-blow response and 2.5A current rating; variations in I²t reflect different ceramic formulations and internal construction. Selection should align with circuit protection requirements and thermal stress conditions.

Q: Can SCHURTER 0001.2508 replace 021502.5VXP in AC-only applications?

A: Yes. SCHURTER 0001.2508 is suitable for AC-only circuits. It matches the 250VAC rating, 2.5A current rating, 5mm x 20mm package, slow-blow response, and 1.5kA breaking capacity. The additional 300VDC rating does not affect AC performance and provides design flexibility for future DC applications.

Q: Which substitute offers the highest inventory availability?

A: Bel Fuse 0659C2500-12 has the highest inventory level at 4490 pcs. This part meets all core substitution criteria and carries CCC, cURus, PSE, and VDE certifications suitable for most industrial applications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 Compliant status, matching the environmental compliance of the main part 021502.5VXP.

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