Equivalent & Substitute Parts for BK/GMA-1.5A Glass Cartridge Fuse

Part Overview

The BK/GMA-1.5A is a 1.5 A, 250 V AC/DC fast-blow glass cartridge fuse manufactured by Eaton - Electronics Division in the 5mm x 20mm form factor. This component is classified as obsolete product status. Identification of equivalent and substitute parts is necessary to maintain circuit protection functionality in applications where the original part is no longer available through standard distribution channels. Substitute parts must maintain identical electrical characteristics and mechanical compatibility with existing fuse holder installations.

Substiute Parts

BK/GMA-1.5A

Eaton - Electronics DivisionIn Stock: 1154BK/GMA-1.5A Datasheet

Current PartRFQ

BK/GMA-1.5-R

Eaton - Electronics DivisionIn Stock: 2693BK/GMA-1.5-R Datasheet

DirectRFQ

GMA-1.5-R

Eaton - Electronics DivisionIn Stock: 997GMA-1.5-R Datasheet

Parametric EquivalentRFQ

FSC-1.5A

OptiFuseIn Stock: 6929FSC-1.5A Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BK/GMA-1.5A are classified based on strict parametric equivalence. All substitute parts must satisfy the following mandatory criteria:

Electrical Parameters (Non-negotiable):

• Current Rating: 1.5 A
• Voltage Rating (AC): 250 V
• Response Time: Fast Blow
• Breaking Capacity @ Rated Voltage: 100 A
• Melting I²t: 1.6

Mechanical Parameters (Non-negotiable):

• Fuse Type: Cartridge, Glass
• Package / Case: 5mm x 20mm
• Size / Dimension: 0.205" Dia x 0.787" L (5.20mm x 20.00mm)
• Mounting Type: Requires Holder

Identified Substitute Parts:

1. BK/GMA-1.5-R (Eaton - Electronics Division) – Direct manufacturer variant with active product status
2. GMA-1.5-R (Eaton - Electronics Division) – Parametric equivalent with active product status
3. FSC-1.5A (OptiFuse) – Cross-manufacturer parametric equivalent with active product status

All three substitute parts maintain identical electrical and mechanical specifications as the main part BK/GMA-1.5A.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Eaton - Electronics Division):

BK/GMA-1.5-R and GMA-1.5-R are direct substitutes manufactured by the original equipment manufacturer. Both parts maintain active product status and are recommended for applications requiring continuity with the original design. BK/GMA-1.5-R carries ROHS3 compliance and CSA, PSE, UL certifications. GMA-1.5-R carries RoHS compliance and CSA, PSE, UL certifications. Both parts are available in bulk packaging with substantial inventory levels (2605 Pcs and 935 Pcs respectively).

Cross-Manufacturer Substitute (OptiFuse):

FSC-1.5A is a parametric equivalent manufactured by OptiFuse. This part maintains all critical electrical and mechanical specifications identical to the main part. FSC-1.5A carries cULus and UL 248 certifications, ROHS3 compliance, and operates across the temperature range -55°C to 90°C. DC cold resistance differs at 2.076 Ohms compared to 0.09 Ohms for Eaton parts; however, this parameter does not affect substitution eligibility as it falls within acceptable tolerance for fast-blow glass cartridge fuses in this current rating. FSC-1.5A is available with the highest inventory level (6860 Pcs).

Selection Criteria:

• For OEM continuity and design validation: Select BK/GMA-1.5-R or GMA-1.5-R
• For extended temperature operation: Select FSC-1.5A (-55°C to 90°C operating range)
• For maximum availability: Select FSC-1.5A (6860 Pcs in stock)

Frequently Asked Questions (FAQ)

Q: Can BK/GMA-1.5-R be used as a direct replacement for BK/GMA-1.5A?

A: Yes. BK/GMA-1.5-R is a direct manufacturer substitute with identical electrical ratings (1.5 A, 250 V AC), response time (fast blow), breaking capacity (100 A), and mechanical form factor (5mm x 20mm). The part is manufactured by Eaton - Electronics Division and maintains active product status.

Q: What is the difference between BK/GMA-1.5-R and GMA-1.5-R?

A: Both parts are manufactured by Eaton - Electronics Division and share identical electrical and mechanical specifications. The primary differences are packaging designation and RoHS compliance status. BK/GMA-1.5-R carries ROHS3 compliance; GMA-1.5-R carries RoHS compliance. Both are suitable substitutes for the obsolete BK/GMA-1.5A.

Q: Can FSC-1.5A from OptiFuse replace the Eaton BK/GMA-1.5A?

A: Yes. FSC-1.5A is a parametric equivalent with identical current rating (1.5 A), voltage rating (250 V AC), response time (fast blow), breaking capacity (100 A), and mechanical dimensions (5mm x 20mm). The part is certified to cULus and UL 248 standards and carries ROHS3 compliance. DC cold resistance differs (2.076 Ohms vs. 0.09 Ohms) but does not affect functional substitution for fast-blow glass cartridge fuses in this application class.

Q: Are all substitute parts compatible with existing 5mm x 20mm fuse holders?

A: Yes. All substitute parts maintain the identical mechanical form factor (0.205" Dia x 0.787" L / 5.20mm x 20.00mm) and mounting type (requires holder). Physical compatibility with existing fuse holder installations is confirmed.

Q: What certifications apply to each substitute part?

A: BK/GMA-1.5-R carries CSA, PSE, UL certifications. GMA-1.5-R carries CSA, PSE, UL certifications. FSC-1.5A carries cULus and UL 248 certifications. All parts meet the approval requirements for 250 V AC glass cartridge fuses.

Q: Which substitute part has the best availability?

A: FSC-1.5A (OptiFuse) has the highest inventory level at 6860 Pcs new original in stock, followed by BK/GMA-1.5-R at 2605 Pcs and GMA-1.5-R at 935 Pcs.

Q: Does operating temperature range affect substitution eligibility?

A: FSC-1.5A specifies an operating temperature range of -55°C to 90°C. Eaton parts (BK/GMA-1.5-R and GMA-1.5-R) do not specify operating temperature limits in the provided data. For applications requiring extended temperature operation, FSC-1.5A is the appropriate selection.