Littelfuse 0217.630TXP Glass Cartridge Fuse Equivalent & Substitute Parts

Part Overview

The Littelfuse 0217.630TXP is a 630 mA, 250 V AC/DC fast-blow glass cartridge fuse in a 5mm x 20mm package format. This component is classified as Active product status and is designed for applications requiring overcurrent protection in electrical circuits. Equivalent and substitute parts are identified when identical electrical parameters, mechanical dimensions, and approval certifications align with the original specification, enabling direct replacement in circuit designs without modification to fuse holder assemblies or electrical schematics.

Key Parameters

Parameter	Value
Current Rating	630 mA
Voltage Rating (AC)	250 V
Response Time	Fast Blow
Package / Case	5mm x 20mm
Fuse Type	Cartridge, Glass
Breaking Capacity @ Rated Voltage	35A
Operating Temperature Range	-55°C ~ 125°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the 0217.630TXP is determined by strict equivalence across the following parameters: current rating (630 mA), voltage rating (250 V AC), response time classification (fast blow), physical package dimensions (5mm x 20mm), and fuse type (cartridge, glass). All identified substitute parts maintain these core electrical and mechanical specifications. Substitutes are grouped into two categories: Littelfuse parametric equivalents (0217.630HXP, 0217.630MXP, 0217.630VXP) and cross-manufacturer alternatives (0034.1514 from SCHURTER, FSD-630MA from OptiFuse). Differences in approval agency certifications, melting I²t values, and DC cold resistance are noted but do not preclude substitution when the primary electrical and dimensional parameters are identical.

Parameter Comparison

Part Number	Manufacturer	Current Rating	Voltage Rating (AC)	Response Time	Package	Breaking Capacity	Melting I²t	DC Cold Resistance	Approval Agencies
0217.630TXP	Littelfuse Inc.	630 mA	250 V	Fast Blow	5mm x 20mm	35A	0.41	0.19 Ohms	CCC, CE, CSA, KC, SEMKO, UR, VDE
0217.630HXP	Littelfuse Inc.	630 mA	250 V	Fast Blow	5mm x 20mm	35A	0.41	0.19 Ohms	CCC, CE, CSA, K-MARK, SEMKO, UL, VDE
0217.630MXP	Littelfuse Inc.	630 mA	250 V	Fast Blow	5mm x 20mm	35A	0.41	0.19 Ohms	CCC, CE, CSA, K-MARK, SEMKO, UL, VDE
0217.630VXP	Littelfuse Inc.	630 mA	250 V	Fast Blow	5mm x 20mm	35A	0.41	0.19 Ohms	CCC, CE, CSA, KC, SEMKO, UL, VDE
0034.1514	SCHURTER Inc.	630 mA	250 V	Fast Blow	5mm x 20mm	35A	0.303	Not Specified	CCC, cURus, VDE
FSD-630MA	OptiFuse	630 mA	250 V	Fast Blow	5mm x 20mm	35A	0.5505	Not Specified	cURus, IEC 60127

Engineering Selection Recommendations

All identified substitute parts maintain Active product status and are ROHS3 compliant. The Littelfuse parametric equivalents (0217.630HXP, 0217.630MXP, 0217.630VXP) are direct Littelfuse series alternatives with identical electrical specifications and melting I²t characteristics. The 0034.1514 from SCHURTER is a cross-manufacturer substitute with equivalent electrical parameters and approval certifications including cURus and VDE. The FSD-630MA from OptiFuse is a parametric equivalent with IEC 60127 certification. Selection between these alternatives is determined by approval agency requirements specific to the end application and regional compliance mandates. Littelfuse variants are preferred when UR or K-MARK certification is required; SCHURTER 0034.1514 is suitable for applications requiring cURus certification; OptiFuse FSD-630MA is applicable for IEC 60127-compliant designs.

Frequently Asked Questions (FAQ)

Q: Can the 0217.630HXP, 0217.630MXP, and 0217.630VXP be used interchangeably with the 0217.630TXP?

A: Yes. These Littelfuse variants are parametric equivalents with identical current rating (630 mA), voltage rating (250 V AC), response time (fast blow), and package dimensions (5mm x 20mm). Differences in approval agency certifications do not affect electrical or mechanical compatibility.

Q: What is the difference between the Littelfuse 0217.630TXP and the SCHURTER 0034.1514?

A: Both parts are electrically equivalent with 630 mA current rating, 250 V AC voltage rating, and 5mm x 20mm package dimensions. The primary difference is manufacturer and approval agency certifications. The SCHURTER part carries cURus and VDE certifications, while the Littelfuse carries UR, KC, and CSA certifications. Melting I²t values differ (0.303 for SCHURTER versus 0.41 for Littelfuse), but both meet the 35A breaking capacity specification.

Q: Is the OptiFuse FSD-630MA compatible with the 0217.630TXP?

A: Yes. The FSD-630MA is a parametric equivalent with matching current rating (630 mA), voltage rating (250 V AC), response time (fast blow), and 5mm x 20mm package dimensions. The melting I²t value is 0.5505, which differs from the Littelfuse specification of 0.41, but the part meets the 35A breaking capacity requirement and carries cURus and IEC 60127 certifications.

Q: Can these fuses be used in any 5mm x 20mm fuse holder?

A: Yes. All identified substitute parts share the identical 5mm x 20mm package dimensions and cartridge glass fuse type, enabling installation in any standard 5mm x 20mm fuse holder without mechanical modification.

Q: Which substitute part should I select for my application?

A: Selection is determined by the approval agency certifications required by your application and regional compliance standards. Verify that the substitute part's certification list (CCC, CE, CSA, cURus, KC, K-MARK, SEMKO, UL, UR, VDE, IEC 60127) includes all certifications mandated for your end product.

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