Equivalent & Substitute Parts for BK1/GMC-200-R

Part Overview

The BK1/GMC-200-R is a 200 mA, 250 V AC/DC glass cartridge fuse manufactured by Eaton - Electronics Division. This medium-blow fuse is designed for 5mm x 20mm holder applications and is currently in active production status. Substitute parts are identified based on matching electrical ratings, mechanical dimensions, and approval certifications to ensure direct functional equivalence in circuit protection applications.

Substiute Parts

BK1/GMC-200-R

Eaton - Electronics DivisionIn Stock: 1870BK1/GMC-200-R Datasheet

Current PartRFQ

BK/GMC-200-R

Eaton - Electronics DivisionIn Stock: 1156BK/GMC-200-R Datasheet

Parametric EquivalentRFQ

20102000021P

Littelfuse Inc.In Stock: 108920102000021P Datasheet

Parametric EquivalentRFQ

MSC-200MA

OptiFuseIn Stock: 2505MSC-200MA Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BK1/GMC-200-R are qualified based on the following criteria:

Primary Matching Parameters:

• Current Rating: 200 mA (exact match required)
• Voltage Rating (AC): 250 V (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)

Secondary Compliance Parameters:

• RoHS3 Compliance
• Approval Agency certifications (CSA, KC, UL, or cULus)
• REACH Unaffected status

All identified substitute parts meet these criteria and are therefore electrically and mechanically interchangeable with the BK1/GMC-200-R in applications requiring a 200 mA, 250 V AC/DC glass fuse in a 5mm x 20mm form factor.

Parameter Comparison

Engineering Selection Recommendations

BK/GMC-200-R (Eaton - Electronics Division): This part is a direct parametric equivalent to the BK1/GMC-200-R, manufactured by the same supplier. All electrical, mechanical, and compliance parameters are identical. This substitute is suitable for applications where Eaton sourcing is preferred or required.

20102000021P (Littelfuse Inc.): This part meets all primary matching parameters and holds cULus approval certification. The breaking capacity of 80A and melting I²t of 0.12 exceed the main part specifications, providing enhanced performance margins. Operating temperature range of -25°C to 70°C is specified. This substitute is suitable for applications requiring Littelfuse sourcing or where enhanced breaking capacity is beneficial.

MSC-200MA (OptiFuse): This part meets all primary matching parameters and holds cULus and UL 248 approval certifications. The breaking capacity of 100A and melting I²t of 0.08063 exceed the main part specifications. Operating temperature range of -55°C to 125°C provides extended thermal performance. This substitute is suitable for applications requiring OptiFuse sourcing or where extended operating temperature range and enhanced breaking capacity are required.

Frequently Asked Questions (FAQ)

Q: Can BK/GMC-200-R be used as a direct replacement for BK1/GMC-200-R?

A: Yes. BK/GMC-200-R is a direct parametric equivalent manufactured by Eaton - Electronics Division with identical electrical ratings (200 mA, 250 V AC), fuse type (cartridge, glass), package dimensions (5mm x 20mm), response time (medium blow), and approval certifications. Physical and electrical interchangeability is confirmed.

Q: What are the key differences between the Littelfuse 20102000021P and the main part?

A: The 20102000021P matches all critical electrical and mechanical parameters. Differences include higher breaking capacity (80A vs. 35A), higher melting I²t (0.12 vs. 0.032), lower DC cold resistance (1.25 Ohms vs. 1.395 Ohms), and specified operating temperature range (-25°C to 70°C). These differences indicate enhanced performance characteristics while maintaining functional equivalence.

Q: What are the key differences between the OptiFuse MSC-200MA and the main part?

A: The MSC-200MA matches all critical electrical and mechanical parameters. Differences include higher breaking capacity (100A vs. 35A), higher melting I²t (0.08063 vs. 0.032), and extended operating temperature range (-55°C to 125°C). These differences indicate enhanced performance characteristics and broader thermal operating envelope while maintaining functional equivalence.

Q: Are all substitute parts compatible with the same 5mm x 20mm fuse holder?

A: Yes. All substitute parts are specified with identical package dimensions of 5mm x 20mm (0.205" Dia x 0.787" L) and require a holder for mounting. Physical compatibility with existing 5mm x 20mm fuse holders is confirmed for all listed substitutes.

Q: Do all substitute parts meet RoHS3 compliance?

A: Yes. All substitute parts listed are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements.

Q: Which substitute part should be selected for applications requiring the widest operating temperature range?

A: The OptiFuse MSC-200MA provides the widest operating temperature range of -55°C to 125°C, compared to the main part (unspecified) and the Littelfuse 20102000021P (-25°C to 70°C). Selection should be based on specific application thermal requirements.