BK/GMD-1.5A Equivalent & Substitute Parts

Part Overview

The BK/GMD-1.5A is a 1.5 A, 250 V AC/DC glass cartridge fuse manufactured by Eaton - Electronics Division. This fuse is designed for use in 5mm x 20mm fuse holders and provides slow-blow response characteristics with a breaking capacity of 100 A at rated voltage. The part is currently classified as obsolete, necessitating identification of active equivalent alternatives that maintain identical electrical and mechanical specifications for continued circuit protection applications.

Substiute Parts

BK/GMD-1.5A

Eaton - Electronics DivisionIn Stock: 1033BK/GMD-1.5A Datasheet

Current PartRFQ

BK/GMD-1.5-R

Eaton - Electronics DivisionIn Stock: 1110BK/GMD-1.5-R Datasheet

DirectRFQ

BK1/GMD-1.5-R

Eaton - Electronics DivisionIn Stock: 1765BK1/GMD-1.5-R Datasheet

Parametric EquivalentRFQ

GMD-1.5-R

Eaton - Electronics DivisionIn Stock: 790GMD-1.5-R Datasheet

Parametric EquivalentRFQ

0034.3777

SCHURTER Inc.In Stock: 16790034.3777 Datasheet

Parametric EquivalentRFQ

TSC-1.5A

OptiFuseIn Stock: 6269TSC-1.5A Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BK/GMD-1.5A are qualified based on strict equivalence of the following critical parameters:

• Current Rating: 1.5 A
• Voltage Rating (AC): 250 V
• Fuse Type: Cartridge, Glass
• Package / Case: 5mm x 20mm
• Response Time: Slow Blow
• Breaking Capacity @ Rated Voltage: 100 A
• Mounting Type: Requires Holder

All identified substitute parts maintain these core electrical and mechanical specifications. Variations in secondary parameters such as melting I²t, DC cold resistance, operating temperature range, and RoHS compliance status do not affect functional substitutability within the defined application envelope.

Parameter Comparison

Engineering Selection Recommendations

Eaton GMD Series (BK/GMD-1.5-R, BK1/GMD-1.5-R, GMD-1.5-R): These three part numbers represent the direct active replacements from Eaton - Electronics Division. All three maintain identical electrical and mechanical specifications to the obsolete BK/GMD-1.5A. The GMD series parts are ROHS3 compliant and carry expanded approval certifications including PSE/JET in addition to CSA and UL. These parts are recommended as primary substitutes due to manufacturer continuity and expanded regulatory compliance.

SCHURTER 0034.3777: This part is a parametric equivalent from SCHURTER Inc. within the FSL 5x20 series. It meets all core electrical and mechanical requirements. The 0034.3777 carries cULus certification and operates across an extended temperature range of -40°C to 85°C. This part is suitable for applications requiring SCHURTER component standardization.

OptiFuse TSC-1.5A: This part is a parametric equivalent from OptiFuse within the TSC series. It meets all core electrical and mechanical requirements. The TSC-1.5A carries cULus and UL 248 certifications and operates across an extended temperature range of -55°C to 125°C. This part is suitable for applications requiring OptiFuse component standardization or extended temperature performance.

All substitute parts are ROHS3 compliant and carry recognized safety certifications appropriate for circuit protection applications.

Frequently Asked Questions (FAQ)

Q: Can BK/GMD-1.5-R, BK1/GMD-1.5-R, and GMD-1.5-R be used interchangeably with BK/GMD-1.5A?

A: Yes. These three Eaton part numbers are direct parametric equivalents. All maintain identical current rating (1.5 A), voltage rating (250 V AC), fuse type (cartridge glass), package dimensions (5mm x 20mm), response time (slow blow), and breaking capacity (100 A). The primary difference is product status: the BK/GMD-1.5A is obsolete while the three alternatives are active.

Q: What is the difference between BK/GMD-1.5-R, BK1/GMD-1.5-R, and GMD-1.5-R?

A: All three parts are electrically and mechanically identical. The differences are in part numbering convention and inventory availability. BK1/GMD-1.5-R has the highest inventory (1712 pcs), followed by BK/GMD-1.5-R (1018 pcs) and GMD-1.5-R (697 pcs). Selection may be based on availability requirements or internal part numbering standards.

Q: Can I substitute a SCHURTER or OptiFuse fuse for an Eaton fuse?

A: Yes. The SCHURTER 0034.3777 and OptiFuse TSC-1.5A are parametric equivalents that meet all core electrical and mechanical specifications. Selection between manufacturers depends on component standardization requirements, certification preferences, or temperature range requirements. OptiFuse TSC-1.5A offers the widest operating temperature range (-55°C to 125°C).

Q: Are all substitute parts RoHS compliant?

A: The original BK/GMD-1.5A is RoHS non-compliant. All active substitute parts (BK/GMD-1.5-R, BK1/GMD-1.5-R, GMD-1.5-R, 0034.3777, and TSC-1.5A) are ROHS3 compliant.

Q: What certifications do the substitute parts carry?

A: Eaton GMD series parts carry CSA, PSE/JET, and UL certifications. SCHURTER 0034.3777 carries cULus certification. OptiFuse TSC-1.5A carries cULus and UL 248 certifications. All certifications are recognized for circuit protection applications.

Q: Do the substitute parts require the same fuse holder as the original BK/GMD-1.5A?

A: Yes. All substitute parts are cartridge glass fuses in 5mm x 20mm package dimensions and require a compatible 5mm x 20mm fuse holder. No holder modification is necessary.

Q: What is the difference in melting I²t between parts?

A: Melting I²t values vary: BK/GMD-1.5A (25), BK/GMD-1.5-R (25), BK1/GMD-1.5-R (25), GMD-1.5-R (25), 0034.3777 (2.86), and TSC-1.5A (8.44). These variations do not affect substitutability within the defined application envelope, as all parts maintain the same current rating, voltage rating, and response time classification.