Equivalent & Substitute Parts for Littelfuse 0217002.H

Part Overview

The Littelfuse 0217002.H is a 2 A, 250 V AC/DC fast-blow glass cartridge fuse in 5mm x 20mm form factor, designed for applications requiring holder-mounted fuse protection. This part is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production support. Substitute parts maintain identical electrical and mechanical specifications while offering active product status and improved compliance profiles.

Key Parameters

Parameter	Value
Current Rating	2 A
Voltage Rating (AC)	250 V
Fuse Type	Cartridge, Glass
Response Time	Fast Blow
Package / Case	5mm x 20mm
Mounting Type	Requires Holder
Breaking Capacity @ Rated Voltage	35 A (Series 217), 100 A (Series 235)
Operating Temperature Range	-55°C to 125°C
Size / Dimension	0.205" Dia x 0.787" L (5.20mm x 20.00mm)

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following parameters: current rating (2 A), voltage rating (250 V AC), fuse type (cartridge glass), response time (fast blow), package dimensions (5mm x 20mm), and mounting requirement (holder-mounted). All substitute parts listed maintain these core electrical and mechanical specifications.

Substitute parts are grouped into two categories based on breaking capacity:

Series 217 and 617 Substitutes (35 A Breaking Capacity): Parts 0217002.HXP, 0217002.MXBP, 0217002.MXP, 0217002.TXP, 0217002.VXP, and 0617002.MXP maintain identical breaking capacity to the original part.

Series 235 Substitutes (100 A Breaking Capacity): Parts 0235002.HXP, 0235002.MXP, and 0235002.VXP feature increased breaking capacity while maintaining all other electrical parameters.

Cross-Manufacturer Substitute (Bel Fuse): Part 5MF 2-R from Bel Fuse Inc. provides an alternative from a different manufacturer with 200 A breaking capacity.

Parameter Comparison

Part Number	Manufacturer	Series	Current (A)	Voltage (V AC)	Breaking Capacity (A)	Melting I²t	DC Cold Resistance (Ω)	Product Status	RoHS Status
0217002.H	Littelfuse	217	2	250	35	5.726	0.042	Obsolete	Non-compliant
0217002.HXP	Littelfuse	217	2	250	35	5.73	0.0416	Active	ROHS3 Compliant
0217002.MXBP	Littelfuse	217	2	250	35	5.73	0.0416	Active	ROHS3 Compliant
0217002.MXP	Littelfuse	217	2	250	35	5.73	0.0416	Active	ROHS3 Compliant
0217002.TXP	Littelfuse	217	2	250	35	5.73	0.0416	Active	ROHS3 Compliant
0217002.VXP	Littelfuse	217	2	250	35	5.73	0.0416	Active	ROHS3 Compliant
0235002.HXP	Littelfuse	235	2	250	100	2.645	0.0603	Active	ROHS3 Compliant
0235002.MXP	Littelfuse	235	2	250	100	2.645	0.0603	Active	ROHS3 Compliant
0235002.VXP	Littelfuse	235	2	250	100	2.645	0.0603	Active	ROHS3 Compliant
0617002.MXP	Littelfuse	617	2	250	35	5.73	0.0416	Active	ROHS3 Compliant
5MF 2-R	Bel Fuse Inc.	5MF	2	250	200	4.4	0.046	Active	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Same Breaking Capacity): Select from Series 217 or 617 Littelfuse parts (0217002.HXP, 0217002.MXBP, 0217002.MXP, 0217002.TXP, 0217002.VXP, or 0617002.MXP). All maintain 35 A breaking capacity and are active products with ROHS3 compliance. These parts are functionally identical to the obsolete 0217002.H and require no circuit redesign.

For Enhanced Breaking Capacity: Series 235 parts (0235002.HXP, 0235002.MXP, 0235002.VXP) provide 100 A breaking capacity while maintaining 2 A current and 250 V voltage ratings. These are suitable for applications requiring higher fault current protection margins. Note that melting I²t values differ (2.645 vs. 5.73), which may affect response characteristics in specific circuit conditions.

For Cross-Manufacturer Compatibility: Bel Fuse 5MF 2-R offers 200 A breaking capacity with active product status and ROHS3 compliance. Physical dimensions are slightly different (5.10mm vs. 5.20mm diameter), requiring confirmation of holder compatibility before selection.

Compliance Considerations: All recommended substitutes are ROHS3 compliant and REACH unaffected. Series 217 and 617 parts maintain the same approval agencies as the original (BSI, CE, CCC, CSA, KC, PSE, SEMKO, UR, VDE). Series 235 parts carry reduced agency approvals (CE, CSA, KC, PSE, UL), which may impact applications with specific certification requirements.

Frequently Asked Questions (FAQ)

Q: Can Series 235 parts be used as direct replacements for Series 217? A: Series 235 parts are electrically compatible for the 2 A, 250 V AC/DC application. However, they feature different melting I²t values (2.645 vs. 5.73) and higher breaking capacity (100 A vs. 35 A). Selection depends on circuit requirements and whether the altered response characteristics are acceptable for the application.

Q: What is the difference between packaging designations (HXP, MXBP, MXP, TXP, VXP)? A: All packaging variants within Series 217 and 617 maintain identical electrical and mechanical specifications. Packaging designations reflect internal Littelfuse manufacturing or distribution classifications. Selection can be based on availability and inventory status without affecting performance.

Q: Is the Bel Fuse 5MF 2-R physically compatible with existing fuse holders? A: The 5MF 2-R has a diameter of 5.10mm compared to the standard 5.20mm. Holder compatibility must be confirmed before use, as the slightly smaller diameter may result in loose contact or inadequate retention in some holder designs.

Q: Why do Series 235 parts have lower melting I²t values? A: Melting I²t is a characteristic of fuse element design and material composition. Series 235 parts are engineered for faster response at the same current rating. The lower I²t value indicates the fuse will melt more quickly under fault conditions, which may be beneficial or detrimental depending on circuit protection requirements.

Q: Are all substitute parts available in the same quantities as the original? A: Inventory levels vary by part number. Series 217 MXP (30,200 pcs) and Series 235 MXP (9,994 pcs) offer the highest stock levels. Availability should be confirmed with the supplier for production requirements.

Q: What certifications are lost when switching from Series 217 to Series 235? A: Series 217 includes BSI, CCC, and VDE approvals that are not present in Series 235. Applications requiring these specific certifications must remain within the Series 217 or 617 product lines.

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