Equivalent & Substitute Parts for 5MT 160-R Glass Cartridge Fuse

Part Overview

The Bel Fuse Inc. 5MT 160-R is a 160 mA, 250 V AC/DC glass cartridge fuse in 5mm x 20mm form factor with medium blow response time. This part is classified as obsolete. Equivalent substitute parts from Littelfuse Inc. are available to maintain circuit protection functionality in applications requiring this current and voltage rating.

Substiute Parts

5MT 160-R

Bel Fuse Inc.In Stock: 6305MT 160-R Datasheet

Current PartRFQ

20101600001

Littelfuse Inc.In Stock: 72820101600001 Datasheet

SimilarRFQ

20101600001P

Littelfuse Inc.In Stock: 109120101600001P Datasheet

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20101600021

Littelfuse Inc.In Stock: 87920101600021 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 5MT 160-R is based on matching the following critical electrical and mechanical parameters:

• Current Rating: 160 mA (exact match required)
• Voltage Rating: 250 V AC (exact match required)
• Package / Case: 5mm x 20mm (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Response Time: Medium Blow (exact match required)
• Mounting Type: Requires Holder (exact match required)

The three Littelfuse substitute parts (20101600001, 20101600001P, and 20101600021) meet all these criteria and are therefore electrically and mechanically compatible with the 5MT 160-R.

Parameter Comparison

Engineering Selection Recommendations

All three Littelfuse substitute parts (20101600001, 20101600001P, and 20101600021) are active products with current manufacturing support, whereas the 5MT 160-R is obsolete. The substitutes maintain identical electrical performance for the specified current and voltage ratings and are mechanically compatible with existing 5mm x 20mm fuse holders.

The Littelfuse parts carry cULus certification. The original 5MT 160-R includes CE and CSA certifications in addition to cULus. Applications requiring CE or CSA compliance should evaluate certification requirements independently.

Operating temperature range differs between the original part (-55°C ~ 125°C) and substitutes (-25°C ~ 70°C). Applications operating outside the -25°C ~ 70°C range require assessment of thermal performance requirements.

Breaking capacity and melting I²t values differ between the original and substitute parts. Applications with specific breaking capacity or thermal energy requirements should evaluate these parameters against circuit protection specifications.

Frequently Asked Questions (FAQ)

Q: Are the Littelfuse 20101600001, 20101600001P, and 20101600021 fuses directly interchangeable with the Bel Fuse 5MT 160-R?

A: Yes, for applications where the operating temperature range of -25°C ~ 70°C is acceptable and certification requirements are met. All parts share identical current rating (160 mA), voltage rating (250 V AC), fuse type (cartridge, glass), package dimensions (5mm x 20mm), response time (medium blow), and mounting requirements (requires holder).

Q: What is the difference between the three Littelfuse substitute parts?

A: The 20101600001 and 20101600021 are both from the 201 series with identical electrical specifications. The 20101600001P is from the 201P series. All three parts have identical current rating, voltage rating, package, response time, breaking capacity, melting I²t, approval agency, operating temperature, and RoHS status. Selection between these three parts may be based on packaging availability or inventory considerations.

Q: Does the higher breaking capacity of the Littelfuse parts (80 A vs. 35 A) affect compatibility?

A: Higher breaking capacity indicates the substitute parts can safely interrupt larger fault currents. This does not negatively affect compatibility in applications where the original 5MT 160-R was used. The circuit protection function at the specified 160 mA current rating remains equivalent.

Q: Are there temperature limitations when substituting the 5MT 160-R?

A: The original 5MT 160-R operates from -55°C ~ 125°C, while Littelfuse substitutes operate from -25°C ~ 70°C. Applications requiring operation outside the -25°C ~ 70°C range must use the original part or identify alternative solutions.

Q: Do the Littelfuse substitutes require the same fuse holder as the 5MT 160-R?

A: Yes. All parts use the 5mm x 20mm form factor and require a compatible fuse holder. Existing 5mm x 20mm fuse holders are suitable for the substitute parts.