Littelfuse 0217.500H Glass Cartridge Fuse 500mA 250VAC 5x20mm Equivalent & Substitute Parts

Part Overview

The Littelfuse 0217.500H is a 500mA fast-blow glass cartridge fuse rated for 250V AC/DC operation in a 5mm x 20mm form factor. This part is classified as obsolete, requiring identification of active equivalent alternatives for new designs and ongoing production support. Substitute parts must maintain identical electrical performance characteristics, mechanical dimensions, and safety certifications to ensure direct compatibility in existing fuse holder assemblies.

Key Parameters

Parameter	Value
Current Rating	500 mA
Voltage Rating (AC)	250 V
Fuse Type	Cartridge, Glass
Response Time	Fast Blow
Package / Case	5mm x 20mm
Breaking Capacity @ Rated Voltage	35A
Operating Temperature Range	-55°C to 125°C
Mounting Type	Requires Holder

Substitute Part Grouping Explanation

Substitution eligibility for the 0217.500H is determined by strict equivalence across the following parameters:

Current Rating: 500 mA (exact match required)
Voltage Rating: 250 V AC (exact match required)
Fuse Type: Cartridge, Glass (exact match required)
Response Time: Fast Blow (exact match required)
Physical Dimensions: 5mm x 20mm (exact match required)
Breaking Capacity: 35A (exact match required)
Operating Temperature: -55°C to 125°C (exact match required)

All substitute parts listed below meet these core electrical and mechanical criteria. Variations in secondary parameters such as melting I²t, DC cold resistance, and approval agency certifications are noted but do not disqualify substitution when primary parameters align.

Parameter Comparison

Part Number	Manufacturer	Current Rating	Voltage (AC)	Response Time	Package	Breaking Capacity	Melting I²t	DC Cold Resistance (Ω)	Product Status	RoHS Status
0217.500H	Littelfuse Inc.	500 mA	250 V	Fast Blow	5x20mm	35A	0.219	0.207	Obsolete	RoHS Non-Compliant
0217.500HXP	Littelfuse Inc.	500 mA	250 V	Fast Blow	5x20mm	35A	0.215	0.2065	Active	RoHS3 Compliant
0217.500MXBP	Littelfuse Inc.	500 mA	250 V	Fast Blow	5x20mm	35A	0.215	0.2065	Active	RoHS3 Compliant
0217.500MXP	Littelfuse Inc.	500 mA	250 V	Fast Blow	5x20mm	35A	0.215	0.2065	Active	RoHS3 Compliant
0217.500TXP	Littelfuse Inc.	500 mA	250 V	Fast Blow	5x20mm	35A	0.215	0.2065	Active	RoHS3 Compliant
0217.500VXP	Littelfuse Inc.	500 mA	250 V	Fast Blow	5x20mm	35A	0.215	0.2065	Active	RoHS3 Compliant
0235.500HXP	Littelfuse Inc.	500 mA	250 V	Fast Blow	5x20mm	35A	0.06915	0.4265	Active	RoHS3 Compliant
0235.500MXP	Littelfuse	500 mA	250 V	Fast Blow	5x20mm	35A	0.06915	0.4265	Active	RoHS3 Compliant
0235.500VXP	Littelfuse Inc.	500 mA	250 V	Fast Blow	5x20mm	35A	0.06915	0.4265	Active	RoHS3 Compliant
0617.500MXP	Littelfuse Inc.	500 mA	250 V	Fast Blow	5x20mm	35A	0.215	0.2065	Active	RoHS3 Compliant
BK/GDB-500MA	Eaton - Electronics Division	500 mA	250 V	Fast Blow	5x20mm	35A	0.18	0.26	Active	RoHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: Littelfuse 0217 Series (Active Status)

The 0217.500HXP, 0217.500MXBP, 0217.500MXP, 0217.500TXP, and 0217.500VXP represent direct series continuations of the obsolete 0217.500H. All are manufactured by Littelfuse Inc., maintain identical electrical and mechanical specifications, and carry RoHS3 compliance. These parts are preferred for direct replacement in existing designs due to series consistency and full certification alignment (CCC, CE, CSA, K-MARK, SEMKO, UL, VDE).

Secondary Recommendation: Littelfuse 0235 Series (Active Status)

The 0235.500HXP, 0235.500MXP, and 0235.500VXP are functionally equivalent across all primary parameters. These parts operate within the same electrical envelope and physical form factor. Certification scope differs (CE, CSA, KC, UL for 0235 series versus expanded certifications for 0217 series), which may affect suitability depending on regional regulatory requirements.

Alternative Manufacturer: Eaton BK/GDB-500MA (Active Status)

The Eaton BK/GDB-500MA provides cross-manufacturer equivalence with identical current, voltage, response time, and physical dimensions. This part carries UL and VDE certifications and RoHS3 compliance. Selection of this part should be based on supply chain requirements or design flexibility for multi-source qualification.

Littelfuse 0617 Series (Active Status)

The 0617.500MXP maintains electrical and mechanical equivalence with melting I²t and DC cold resistance matching the 0217 series variants. Certification includes CCC, CE, CSA, UR, and VDE. This part is suitable for applications where 0617 series qualification is already established.

Frequently Asked Questions (FAQ)

Q: Can the 0217.500H be directly replaced with 0217.500HXP?

A: Yes. Both parts share identical current rating (500 mA), voltage rating (250 V AC), response time (fast blow), and physical dimensions (5x20mm). The primary difference is product status (obsolete versus active) and RoHS compliance. The 0217.500HXP is the recommended direct replacement.

Q: What is the difference between 0217.500HXP and 0235.500HXP?

A: Both parts meet all primary electrical and mechanical substitution criteria. The 0235 series exhibits different melting I²t (0.06915 versus 0.215) and DC cold resistance (0.4265 Ω versus 0.2065 Ω). Certification scope also differs. Selection depends on whether the application has been qualified to either series specification.

Q: Is the Eaton BK/GDB-500MA compatible with Littelfuse fuse holders?

A: Yes. The BK/GDB-500MA maintains the 5mm x 20mm physical form factor and all primary electrical parameters required for mechanical and electrical compatibility with standard fuse holders designed for this package size.

Q: Why do some substitute parts have different melting I²t values?

A: Melting I²t is a secondary thermal characteristic that reflects the specific internal construction of the fuse element. Variations in this parameter do not affect substitution eligibility when all primary parameters (current, voltage, response time, dimensions, breaking capacity) remain identical. The part will still operate within the same electrical circuit protection envelope.

Q: Which substitute part has the best availability?

A: The 0217.500MXP and 0617.500MXP show the highest inventory levels (3196 and 3458 units respectively). The 0217.500HXP offers 2683 units in stock. Availability should be confirmed with your component supplier for current production requirements.

Q: Are all substitute parts RoHS compliant?

A: All active substitute parts listed carry RoHS3 compliance. The original 0217.500H is marked as RoHS non-compliant due to its obsolete status. Transition to any active substitute part ensures RoHS3 compliance for new designs and production.

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