Littelfuse 02853.15MXP Ceramic Fuse 3.15A 250VAC 5x20mm - Equivalent & Substitute Parts

Part Overview

The Littelfuse 02853.15MXP is a ceramic cartridge fuse rated for 3.15A at 250VAC, housed in a 5x20mm form factor. This slow-blow fuse is designed for circuit protection in AC/DC applications requiring a holder for installation. The part is active in production with ROHS3 compliance and PSE approval. Substitute parts are identified when equivalent electrical ratings, mechanical dimensions, and functional characteristics align with the original specification, enabling direct replacement in compatible fuse holders.

Key Parameters

Parameter	Value
Current Rating	3.15 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 alignment of the following parameters:

Current Rating: 3.15 A (exact match required)
Voltage Rating (AC): 250 V (exact match required)
Package / Case: 5mm x 20mm (exact match required)
Fuse Type: Cartridge, Ceramic (exact match required)
Response Time: Slow Blow (exact match required)
Mounting Type: Requires Holder (exact match required)

Parts meeting all seven criteria are classified as parametric equivalents. Secondary considerations include breaking capacity, melting I²t characteristics, approval agencies, and DC voltage ratings where applicable. All substitute parts listed maintain compatibility with standard 5x20mm fuse holders.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Current Rating (A)	Voltage AC (V)	Voltage DC (V)	Package	Response Time	Breaking Capacity	Melting I²t	Operating Temp (°C)	RoHS Status
02853.15MXP	Littelfuse Inc.	3.15	250	—	5x20mm	Slow Blow	1.5kA	51.597	-55 ~ 125	ROHS3
02153.15HXP	Littelfuse Inc.	3.15	250	—	5x20mm	Slow Blow	1.5kA	43.255	-55 ~ 125	ROHS3
02153.15MXP	Littelfuse Inc.	3.15	250	—	5x20mm	Slow Blow	1.5kA	43.255	-55 ~ 125	ROHS3
02153.15TXP	Littelfuse Inc.	3.15	250	—	5x20mm	Slow Blow	1.5kA	43.255	-55 ~ 125	ROHS3
02853.15HXP	Littelfuse Inc.	3.15	250	—	5x20mm	Slow Blow	1.5kA	51.597	-55 ~ 125	ROHS3
0001.2509	SCHURTER Inc.	3.15	250	300	5x20mm	Slow Blow	1.5kA	33.7	-55 ~ 125	ROHS3
0001.2709.11	SCHURTER Inc.	3.15	250	300	5x20mm	Slow Blow	1.5kA	33.7	-55 ~ 125	ROHS3
0659C3150-12	Bel Fuse Inc.	3.15	250	—	5x20mm	Slow Blow	1.5kA	24.8	-55 ~ 125	ROHS3
TCC-3.15A	OptiFuse	3.15	250	—	5x20mm	Slow Blow	100A	12.145	-55 ~ 125	ROHS3
TCD-3.15A	OptiFuse	3.15	250	—	5x20mm	Slow Blow	1.5kA	—	-55 ~ 125	ROHS3

Engineering Selection Recommendations

All listed substitute parts maintain the core electrical and mechanical specifications required for direct replacement in 5x20mm fuse holders. Selection among equivalents should be based on:

Littelfuse Series 215 and 285 variants (02153.15HXP, 02153.15MXP, 02153.15TXP, 02853.15HXP): These parts share identical current, voltage, and package ratings with the primary part. Series 215 variants carry expanded approval certifications (CCC, CE, CSA, KC, PSE, SEMKO, UL, VDE), while Series 285 variants carry PSE approval only. Melting I²t values differ between series, affecting thermal response characteristics.

SCHURTER SPT and SMD-SPT series (0001.2509, 0001.2709.11): These parts provide dual AC/DC voltage ratings (250VAC / 300VDC) and carry certifications including CCC, cURus, VDE, and PSE/JET. Lower melting I²t values (33.7) indicate faster thermal response compared to Littelfuse Series 285.

Bel Fuse 0659C3150-12: Offers CCC, cURus, PSE, and VDE certifications with a melting I²t of 24.8, representing the fastest thermal response among listed equivalents.

OptiFuse TCC-3.15A and TCD-3.15A: Both maintain 3.15A / 250VAC ratings in 5x20mm form. TCC-3.15A carries cULus and UL 248 approvals with a breaking capacity of 100A. TCD-3.15A carries cURus and IEC 60127 approvals with 1.5kA breaking capacity.

All parts are ROHS3 compliant and operate across the -55°C to 125°C temperature range.

Frequently Asked Questions (FAQ)

Q: Can any of these substitute parts be used interchangeably with the Littelfuse 02853.15MXP?

A: Yes, all listed parts are parametric equivalents meeting the core requirements: 3.15A current rating, 250VAC voltage rating, 5x20mm package, ceramic cartridge type, slow-blow response, and holder-based mounting. Physical dimensions and electrical ratings are identical, enabling direct installation in compatible fuse holders.

Q: What is the significance of different melting I²t values among the substitute parts?

A: Melting I²t represents the thermal energy required to melt the fuse element. Lower values indicate faster thermal response to overcurrent conditions. The primary part (02853.15MXP) has a melting I²t of 51.597, while SCHURTER parts measure 33.7 and Bel Fuse measures 24.8. These differences affect the speed at which the fuse responds to thermal stress, which may be relevant in applications with specific thermal protection requirements.

Q: Do all substitute parts carry the same regulatory approvals?

A: No. The primary part carries PSE approval only. Littelfuse Series 215 variants carry expanded certifications (CCC, CE, CSA, KC, PSE, SEMKO, UL, VDE). SCHURTER parts carry CCC, cURus, VDE, and PSE/JET approvals. Bel Fuse carries CCC, cURus, PSE, and VDE. OptiFuse TCC-3.15A carries cULus and UL 248, while TCD-3.15A carries cURus and IEC 60127. Selection should align with the regulatory requirements of the target application.

Q: What is the difference between parts with AC-only and AC/DC voltage ratings?

A: The primary part and most Littelfuse and OptiFuse variants are rated for 250VAC. SCHURTER parts (0001.2509, 0001.2709.11) carry dual ratings of 250VAC / 300VDC, providing protection in both AC and DC circuits. Selection depends on whether the application operates in AC, DC, or mixed-mode environments.

Q: Are all substitute parts available in the same packaging format?

A: Yes. All listed parts are supplied in bulk packaging and are housed in the standard 5x20mm ceramic cartridge form factor, compatible with universal 5x20mm fuse holders.

Q: How do I determine which substitute part is most suitable for my application?

A: Verify that your application requires a 3.15A, 250VAC, 5x20mm ceramic slow-blow fuse. Confirm the regulatory certifications required by your target market. If DC operation is needed, select SCHURTER parts with dual AC/DC ratings. If thermal response speed is critical, compare melting I²t values. All parts maintain identical electrical and mechanical compatibility with the primary part.

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