Littelfuse 0219.160M Equivalent & Substitute Parts

Part Overview

The Littelfuse 0219.160M is a 160 mA, 250 V AC/DC glass cartridge fuse with a 5mm x 20mm form factor and slow-blow response time. This part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain identical electrical and mechanical specifications for direct substitution in existing designs and applications.

Key Parameters

Parameter	Value
Current Rating	160 mA
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 ~ 125°C
Breaking Capacity @ Rated Voltage	150A

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following critical parameters: current rating (160 mA), voltage rating (250 V AC), response time (slow blow), physical package (5mm x 20mm), and fuse type (cartridge, glass). All identified substitutes maintain these core electrical and mechanical specifications.

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

Category A: 150A Breaking Capacity (Direct Electrical Equivalents) Parts 0219.160MXABP, 0219.160MXAP, and 0219.160TXAP maintain the original 150A breaking capacity specification.

Category B: 35A Breaking Capacity (Reduced Breaking Capacity) Parts 0218.160HXP, 0218.160MX8810P, 0218.160MXP, 0218.160TXP, 0218.160VXP, 0618.160MXP, and SCHURTER 0034.3109 operate at 35A breaking capacity, suitable for applications where lower fault current levels are present.

Parameter Comparison

Part Number	Manufacturer	Series	Current Rating	Voltage (AC)	Response Time	Package	Breaking Capacity	Melting I²t	DC Cold Resistance (Ω)	Product Status	RoHS Status
0219.160M	Littelfuse	219	160 mA	250 V	Slow Blow	5x20mm	150A	0.225	2.44	Obsolete	Non-compliant
0218.160HXP	Littelfuse	218	160 mA	250 V	Slow Blow	5x20mm	35A	0.219	2.55	Active	ROHS3 Compliant
0218.160MX8810P	Littelfuse	218	160 mA	250 V	Slow Blow	5x20mm	35A	0.219	2.55	Active	ROHS3 Compliant
0218.160MXP	Littelfuse	218	160 mA	250 V	Slow Blow	5x20mm	35A	0.219	2.55	Active	ROHS3 Compliant
0218.160TXP	Littelfuse	218	160 mA	250 V	Slow Blow	5x20mm	35A	0.144	3.7	Active	ROHS3 Compliant
0218.160VXP	Littelfuse	218	160 mA	250 V	Slow Blow	5x20mm	35A	0.144	3.7	Active	ROHS3 Compliant
0219.160MXABP	Littelfuse	219XA	160 mA	250 V	Slow Blow	5x20mm	150A	0.31	2.55	Active	ROHS3 Compliant
0219.160MXAP	Littelfuse	219XA	160 mA	250 V	Slow Blow	5x20mm	150A	0.31	2.55	Active	ROHS3 Compliant
0219.160TXAP	Littelfuse	219XA	160 mA	250 V	Slow Blow	5x20mm	150A	0.31	2.55	Active	ROHS3 Compliant
0618.160MXP	Littelfuse	618	160 mA	250 V	Slow Blow	5x20mm	35A	0.144	3.7	Active	ROHS3 Compliant
0034.3109	SCHURTER	FST 5x20	160 mA	250 V	Slow Blow	5x20mm	35A	0.23	—	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (Recommended for Direct Replacement)

The Littelfuse 0219.160MXAP and 0219.160MXABP are the preferred direct replacements. Both maintain the original 150A breaking capacity, operate within the identical -55°C to 125°C temperature range, and are ROHS3 compliant with active product status. These parts are electrically and mechanically equivalent to the obsolete 0219.160M.

Secondary Substitutes (Application-Dependent)

The Littelfuse 0219.160TXAP provides equivalent performance with active status and ROHS3 compliance. All three 219XA series parts carry identical electrical specifications and certifications.

Alternative Substitutes (Reduced Breaking Capacity)

Parts 0218.160HXP, 0218.160MX8810P, and 0218.160MXP from the 218 series are suitable for applications where the circuit fault current does not exceed 35A. These parts maintain the 160 mA current rating, 250 V voltage rating, slow-blow response, and 5mm x 20mm package. All are ROHS3 compliant and active.

The Littelfuse 0218.160TXP and 0218.160VXP offer reduced breaking capacity (35A) with higher DC cold resistance (3.7 Ω) compared to the original specification (2.44 Ω). These are suitable only where circuit impedance permits the higher resistance.

Cross-Manufacturer Alternative

The SCHURTER 0034.3109 (FST 5x20 series) provides equivalent electrical performance with 35A breaking capacity. This part is ROHS3 compliant and active, suitable for applications with lower fault current levels.

Frequently Asked Questions (FAQ)

Q: Can I use a 35A breaking capacity fuse as a direct replacement for the 150A breaking capacity original?

A: No. Breaking capacity must match or exceed the circuit's maximum fault current. Using a lower breaking capacity fuse in a high-fault-current circuit creates a safety hazard. Verify your circuit's fault current before selecting a substitute.

Q: Are all substitute parts physically compatible with the original fuse holder?

A: Yes. All substitute parts maintain the 5mm x 20mm physical dimensions and cartridge glass form factor, ensuring mechanical compatibility with standard 5x20mm fuse holders.

Q: What is the difference between the 219 and 218 series fuses?

A: The primary difference is breaking capacity. The 219 series (original part) and 219XA series (recommended substitutes) are rated for 150A breaking capacity. The 218 series is rated for 35A breaking capacity. Both series maintain identical current ratings, voltage ratings, response times, and physical packages.

Q: Why does the original part show RoHS non-compliant status?

A: The 0219.160M is obsolete and predates current RoHS3 compliance requirements. All active substitute parts are ROHS3 compliant, meeting current environmental and regulatory standards.

Q: Can I mix different substitute part numbers in the same circuit?

A: Yes, provided all selected parts meet your circuit's fault current requirements. However, for consistency and traceability, using a single part number across identical circuit positions is recommended.

Q: What certifications should I verify for my application?

A: The original part carries BSI, CCC, CSA, KTL, PSE, SEMKO, UR, and VDE approvals. Recommended substitutes (0219.160MXAP, 0219.160MXABP, 0219.160TXAP) carry CCC, CE, CSA, SEMKO, UL, and VDE certifications. Verify that the selected substitute's certification list includes all agencies required by your application and regional standards.

Q: What is melting I²t and why does it vary among substitutes?

A: Melting I²t is the thermal energy required to melt the fuse element, expressed in ampere-squared seconds. Variations in melting I²t reflect differences in fuse element design and material composition. The original part specifies 0.225 A²s. Substitutes range from 0.144 to 0.31 A²s. Verify that the selected substitute's melting I²t is compatible with your circuit's thermal protection requirements.

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