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Equivalent & Substitute Parts for BK/GDB-V-50MA
Part Overview
The BK/GDB-V-50MA is a 50 mA, 250 V AC/DC fast-blow glass cartridge fuse with a 5mm x 20mm axial through-hole package manufactured by Eaton - Electronics Division. This component is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing circuit protection applications. Substitute parts must maintain identical electrical ratings and mechanical compatibility to ensure proper circuit protection function without design modification.
Substiute Parts
Key Parameters
| Parameter | Specification |
|---|---|
| Current Rating | 50 mA |
| Voltage Rating (AC) | 250 V |
| Fuse Type | Cartridge, Glass |
| Response Time | Fast Blow |
| Package / Case | 5mm x 20mm (Axial) |
| Mounting Type | Through Hole |
| Breaking Capacity @ Rated Voltage | 35 A |
| Melting I²t | 0.0002 |
Substitute Part Grouping Explanation
Substitution validity for the BK/GDB-V-50MA is determined by strict equivalence across the following parameters:
- Current Rating: Must be 50 mA
- Voltage Rating (AC): Must be 250 V
- Fuse Type: Must be Cartridge, Glass
- Response Time: Must be Fast Blow
- Package / Case: Must be 5mm x 20mm (Axial)
- Mounting Type: Must be Through Hole
- Breaking Capacity @ Rated Voltage: Must be 35 A
All identified substitute parts meet these criteria. Variations in melting I²t, DC cold resistance, physical dimensions within tolerance, and operating temperature ranges do not preclude substitution when all primary electrical and mechanical parameters align.
Parameter Comparison
| Parameter | BK/GDB-V-50MA (Eaton) | BK/S500-V-50-R (Eaton) | 0034.1529.PT (SCHURTER) | 0217.050MXEP (Littelfuse) |
|---|---|---|---|---|
| Current Rating (Amps) | 50 mA | 50 mA | 50 mA | 50 mA |
| Voltage Rating - AC | 250 V | 250 V | 250 V | 250 V |
| Fuse Type | Cartridge, Glass | Cartridge, Glass | Cartridge, Glass | Cartridge, Glass |
| Response Time | Fast Blow | Fast Blow | Fast Blow | Fast Blow |
| Package / Case | 5mm x 20mm (Axial) | 5mm x 20mm (Axial) | 5mm x 20mm (Axial) | 5mm x 20mm (Axial) |
| Mounting Type | Through Hole | Through Hole | Through Hole | Through Hole |
| Breaking Capacity @ Rated Voltage | 35 A | 35 A | 35 A | 35 A |
| Melting I²t | 0.0002 | 0.0002 | 0.00025 | 0.00019 |
| DC Cold Resistance (Ohms) | 17 | Not Specified | Not Specified | 15.2 |
| Product Status | Obsolete | Active | Active | Active |
Engineering Selection Recommendations
BK/S500-V-50-R (Eaton - Electronics Division): This part is manufactured by the same supplier as the obsolete BK/GDB-V-50MA and maintains identical electrical and mechanical specifications. Product status is active with RoHS compliance. This represents the primary direct replacement option.
0034.1529.PT (SCHURTER Inc.): This part meets all substitution criteria and carries active product status with ROHS3 compliance and cURus approval. Operating temperature range is specified as -55°C to 125°C. This part is suitable for applications requiring certified thermal performance.
0217.050MXEP (Littelfuse Inc.): This part satisfies all substitution requirements with active product status and ROHS3 compliance. It carries multiple approval certifications including UL, VDE, CE, CSA, K-MARK, and SEMKO. Inventory availability is highest among substitute options at 2724 pieces. This part is suitable for applications requiring comprehensive international certifications.
Frequently Asked Questions (FAQ)
Q: Can BK/S500-V-50-R directly replace BK/GDB-V-50MA without circuit modification?
A: Yes. Both parts share identical current rating (50 mA), voltage rating (250 V AC), fuse type (cartridge glass), response time (fast blow), package dimensions (5mm x 20mm axial), and breaking capacity (35 A). No circuit modification is required.
Q: What is the difference between the three substitute parts?
A: All three substitute parts meet identical electrical and mechanical requirements. Differences exist in manufacturer (Eaton, SCHURTER, Littelfuse), approval certifications, operating temperature specifications, and inventory availability. Selection should be based on supply chain requirements and certification needs for the application.
Q: Are there dimensional differences between substitute parts?
A: Minor dimensional variations exist within the 5mm x 20mm package specification. BK/S500-V-50-R and 0034.1529.PT have not specified exact dimensions. 0217.050MXEP specifies 0.236" diameter x 0.886" length (6.00mm x 22.50mm). These variations remain within standard 5x20mm cartridge fuse tolerances and do not affect through-hole mounting compatibility.
Q: Which substitute part has the best availability?
A: 0217.050MXEP (Littelfuse) has the highest inventory at 2724 pieces in stock, followed by 0034.1529.PT (SCHURTER) at 830 pieces, and BK/S500-V-50-R (Eaton) at 745 pieces.
Q: Do all substitute parts have RoHS compliance?
A: BK/S500-V-50-R carries RoHS compliance status. 0034.1529.PT is ROHS3 compliant. 0217.050MXEP is ROHS3 compliant. All three substitute parts meet modern RoHS requirements.
Q: What certifications does 0217.050MXEP carry?
A: 0217.050MXEP carries CCC, CE, CSA, K-MARK, SEMKO, UL, and VDE certifications, providing comprehensive international approval coverage.
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