Littelfuse 021801.6VXP Glass Cartridge Fuse 1.6A 250VAC 5x20mm Equivalent & Substitute Parts

Part Overview

The Littelfuse 021801.6VXP is a 1.6 A, 250 V AC/DC slow-blow glass cartridge fuse in 5mm x 20mm form factor. This fuse is designed for circuit protection in applications requiring a slow-blow response characteristic and is classified as Active product status. Substitute parts are identified when inventory constraints, regional availability, or specific certification requirements necessitate alternative Littelfuse series selections that maintain identical electrical and mechanical parameters.

Key Parameters

Parameter	Value
Current Rating	1.6 A
Voltage Rating (AC)	250 V
Response Time	Slow Blow
Package / Case	5mm x 20mm
Fuse Type	Cartridge, Glass
Mounting Type	Requires Holder
Operating Temperature Range	-55°C to 125°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the 021801.6VXP are grouped based on strict electrical and mechanical equivalence. All substitute parts maintain the following critical parameters:

Current Rating: 1.6 A
Voltage Rating: 250 V AC
Response Time: Slow Blow
Package: 5mm x 20mm
Fuse Type: Cartridge, Glass
Operating Temperature: -55°C to 125°C
RoHS3 Compliance

Substitution is determined by series designation (218, 213, 219XA, 239, 618) and variant codes (MXP, TXP, HXP, MXABP, MXAP). Differences in Breaking Capacity, Melting I²t, DC Cold Resistance, and approval agency certifications do not preclude substitution when electrical and mechanical parameters are identical.

Parameter Comparison

Part Number	Series	Current (A)	Voltage (V AC)	Response	Package	Breaking Capacity (A)	Melting I²t	DC Resistance (Ω)	Inventory (Pcs)
021801.6VXP	218	1.6	250	Slow Blow	5x20mm	35	23.35	0.0336	994
021301.6MXP	213	1.6	250	Slow Blow	5x20mm	35	44.2	0.0551	1001
021301.6TXP	213	1.6	250	Slow Blow	5x20mm	35	44.2	0.0551	904
021801.6HXP	218	1.6	250	Slow Blow	5x20mm	35	23.35	0.0336	1213
021801.6MXP	218	1.6	250	Slow Blow	5x20mm	35	23.35	0.0336	2622
021801.6TXP	218	1.6	250	Slow Blow	5x20mm	35	23.35	0.0336	704
021901.6MXABP	219XA	1.6	250	Slow Blow	5x20mm	150	44.2	0.0551	2757
021901.6MXAP	219XA	1.6	250	Slow Blow	5x20mm	150	44.2	0.0551	2200
023901.6HXP	239	1.6	250	Slow Blow	5x20mm	100	30.43	0.1205	2100
023901.6MXP	239	1.6	250	Slow Blow	5x20mm	100	30.43	0.1205	5626
061801.6MXP	618	1.6	250	Slow Blow	5x20mm	35	23.35	0.0336	10400

Engineering Selection Recommendations

All substitute parts listed maintain Active product status and ROHS3 compliance. Selection among equivalent parts is based on:

Series 218 (021801.6VXP, 021801.6HXP, 021801.6MXP, 021801.6TXP): Direct equivalents with identical electrical characteristics, Breaking Capacity of 35A, and Melting I²t of 23.35. Variant codes (VXP, HXP, MXP, TXP) indicate approval agency differences. 021801.6MXP offers highest inventory (2622 Pcs).

Series 213 (021301.6MXP, 021301.6TXP): Equivalent electrical ratings with higher Melting I²t (44.2) and DC Cold Resistance (0.0551 Ω). Approval agencies include BSI and UR certifications not present in Series 218.

Series 219XA (021901.6MXABP, 021901.6MXAP): Equivalent electrical ratings with elevated Breaking Capacity (150A) and higher Melting I²t (44.2). MSL rating of 1 (Unlimited) applies. 021901.6MXABP provides highest inventory in this series (2757 Pcs).

Series 239 (023901.6HXP, 023901.6MXP): Equivalent electrical ratings with Breaking Capacity of 100A and Melting I²t of 30.43. Higher DC Cold Resistance (0.1205 Ω). Approval agencies limited to CE, CSA, KC, PSE, UL. 023901.6MXP offers highest inventory in this series (5626 Pcs).

Series 618 (061801.6MXP): Equivalent to Series 218 with identical electrical characteristics and Breaking Capacity. Highest overall inventory availability (10400 Pcs). Approval agencies: CCC, CE, CSA, UR, VDE.

Frequently Asked Questions (FAQ)

Q: Can I substitute a Series 213 fuse for the original 021801.6VXP?

A: Yes. Series 213 maintains identical current rating (1.6 A), voltage rating (250 V AC), response time (Slow Blow), and package dimensions (5x20mm). Differences in Melting I²t and DC Cold Resistance do not affect mechanical or electrical compatibility in the 5x20mm holder.

Q: What is the difference between Series 218 and Series 219XA?

A: Both maintain identical electrical parameters (1.6 A, 250 V AC, Slow Blow, 5x20mm). Series 219XA has higher Breaking Capacity (150A vs. 35A) and higher Melting I²t (44.2 vs. 23.35). Series 219XA also carries MSL rating of 1 (Unlimited).

Q: Why does Series 239 have higher DC Cold Resistance?

A: DC Cold Resistance of 0.1205 Ω in Series 239 differs from 0.0336 Ω in Series 218, but both maintain the same current rating, voltage rating, and response time. This parameter difference does not preclude substitution for 5x20mm cartridge fuse applications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 Compliant status and are suitable for applications requiring RoHS compliance.

Q: Which substitute part has the highest inventory?

A: Series 618 part number 061801.6MXP has the highest inventory at 10400 Pcs. Within Series 218, 021801.6MXP offers 2622 Pcs.

Q: Do approval agency certifications affect substitution eligibility?

A: Approval agency certifications (CCC, CE, CSA, UL, VDE, etc.) are application-specific requirements. All listed parts are Active status and ROHS3 compliant. Verify that the substitute part's certification set meets your application requirements before selection.

Q: Can I use a 5x20mm fuse from a different manufacturer?

A: This reference covers Littelfuse series equivalents only. Cross-manufacturer substitution requires separate verification of electrical parameters, approval certifications, and mechanical compatibility with the fuse holder.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message