Littelfuse 0235002.H Glass Cartridge Fuse 2A 250VAC 5x20mm Equivalent & Substitute Parts

Part Overview

The Littelfuse 0235002.H is a 2A 250VAC fast-blow glass cartridge fuse in 5x20mm form factor, designed for circuits requiring holder-mounted protection. This part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility. Substitute parts must match the core electrical parameters (2A current rating, 250V AC voltage rating, fast-blow response) and physical dimensions (5x20mm) while meeting current RoHS and certification requirements.

Key Parameters

Parameter	Value
Current Rating	2 A
Voltage Rating (AC)	250 V
Response Time	Fast Blow
Package / Case	5mm x 20mm
Fuse Type	Cartridge, Glass
Mounting Type	Requires Holder
Operating Temperature Range	-55°C ~ 125°C

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence in the following parameters:

Current Rating: 2 A (exact match required)
Voltage Rating: 250 V AC (exact match required)
Response Time: Fast Blow (exact match required)
Package / Case: 5mm x 20mm (exact match required)
Fuse Type: Cartridge, Glass (exact match required)
Mounting Type: Requires Holder (exact match required)

All identified substitute parts meet these core electrical and mechanical criteria. Variations in breaking capacity, melting I²t, DC cold resistance, and approval agencies do not preclude substitution but reflect design differences within the same functional class. Parts are grouped by manufacturer series and product status (active vs. obsolete).

Parameter Comparison

Part Number	Manufacturer	Series	Current (A)	Voltage (V AC)	Response	Package	Breaking Capacity (A)	Melting I²t	DC Cold Resistance (Ω)	Product Status	RoHS Status
0235002.H	Littelfuse Inc.	235	2	250	Fast Blow	5x20mm	100	2.72	0.06	Obsolete	Non-compliant
0217002.HXP	Littelfuse Inc.	217	2	250	Fast Blow	5x20mm	35	5.73	0.0416	Active	ROHS3 Compliant
0217002.MXBP	Littelfuse Inc.	217	2	250	Fast Blow	5x20mm	35	5.73	0.0416	Active	ROHS3 Compliant
0217002.MXP	Littelfuse Inc.	217	2	250	Fast Blow	5x20mm	35	5.73	0.0416	Active	ROHS3 Compliant
0217002.TXP	Littelfuse Inc.	217	2	250	Fast Blow	5x20mm	35	5.73	0.0416	Active	ROHS3 Compliant
0217002.VXP	Littelfuse Inc.	217	2	250	Fast Blow	5x20mm	35	5.73	0.0416	Active	ROHS3 Compliant
0235002.HXP	Littelfuse Inc.	235	2	250	Fast Blow	5x20mm	100	2.645	0.0603	Active	ROHS3 Compliant
0235002.MXP	Littelfuse Inc.	235	2	250	Fast Blow	5x20mm	100	2.645	0.0603	Active	ROHS3 Compliant
0235002.VXP	Littelfuse Inc.	235	2	250	Fast Blow	5x20mm	100	2.645	0.0603	Active	ROHS3 Compliant
0617002.MXP	Littelfuse Inc.	617	2	250	Fast Blow	5x20mm	35	5.73	0.0416	Active	ROHS3 Compliant
0034.3877	SCHURTER Inc.	FSK 5x20	2	250	Fast Blow	5x20mm	100	2.93	N/A	Active	ROHS3 Compliant

Engineering Selection Recommendations

All listed substitute parts are electrically and mechanically equivalent to the 0235002.H. Selection should prioritize active product status and current compliance certifications.

Littelfuse Series 235 (0235002.HXP, 0235002.MXP, 0235002.VXP): These parts maintain the same series lineage as the obsolete 0235002.H with 100A breaking capacity. All are active products with ROHS3 compliance. The 0235002.MXP offers the highest inventory availability (9994 pcs). Certification coverage includes CE, CSA, KC, PSE, and UL.

Littelfuse Series 217 (0217002.HXP, 0217002.MXBP, 0217002.MXP, 0217002.TXP, 0217002.VXP): These parts feature 35A breaking capacity and extended certification scope (BSI, CE, CCC, CSA, KC, PSE, SEMKO, UR, VDE). The 0217002.MXP provides the largest inventory (30200 pcs) and is suitable for applications where the lower breaking capacity is acceptable.

Littelfuse Series 617 (0617002.MXP): Active product with 35A breaking capacity and broad certification (CCC, CE, CSA, UR, VDE). Inventory availability is 7181 pcs.

SCHURTER FSK 5x20 (0034.3877): Cross-manufacturer alternative with 100A breaking capacity, cULus certification, and active product status. Operating temperature range is -40°C to 85°C (narrower than Littelfuse alternatives). Inventory: 1840 pcs.

Frequently Asked Questions (FAQ)

Q: Can I substitute the obsolete 0235002.H with any of the listed parts?

A: Yes. All listed parts match the required electrical parameters (2A, 250V AC, fast-blow response) and physical dimensions (5x20mm). All are active products with current RoHS3 compliance. Selection depends on your specific certification requirements and breaking capacity tolerance.

Q: What is the difference between Series 235 and Series 217 substitutes?

A: The primary difference is breaking capacity. Series 235 parts (0235002.HXP, 0235002.MXP, 0235002.VXP) have 100A breaking capacity, matching the original 0235002.H. Series 217 parts (0217002.HXP, 0217002.MXBP, 0217002.MXP, 0217002.TXP, 0217002.VXP) have 35A breaking capacity. Both series are electrically equivalent for 2A/250V applications. Choose Series 235 if your circuit design specifies 100A breaking capacity; choose Series 217 if 35A is acceptable.

Q: Are there packaging differences between substitute options?

A: All substitute parts are supplied in bulk packaging. The physical form factor (5x20mm glass cartridge requiring holder) is identical across all options. No mechanical redesign is required for installation.

Q: Which substitute offers the best availability?

A: The Littelfuse 0217002.MXP provides the highest inventory (30200 pcs). For Series 235 equivalents, the 0235002.MXP offers 9994 pcs. Both are active products with full ROHS3 compliance.

Q: Can I use the SCHURTER 0034.3877 as a direct replacement?

A: Yes, the SCHURTER 0034.3877 is electrically and mechanically equivalent with 100A breaking capacity. Note that its operating temperature range (-40°C to 85°C) is narrower than Littelfuse alternatives (-55°C to 125°C). Verify this range is acceptable for your application before selection.

Q: What certifications should I prioritize?

A: This depends on your end-market requirements. Littelfuse Series 235 parts include UL certification (relevant for North American markets). Series 217 parts include broader international certifications (BSI, CCC, SEMKO, VDE). The SCHURTER part carries cULus certification. Confirm your regional compliance requirements before final selection.

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