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BK/MDA-2/10 Equivalent & Substitute Parts Reference
Part Overview
The BK/MDA-2/10 is a 200 mA, 250 V AC/DC ceramic cartridge fuse manufactured by Eaton - Electronics Division. This component is classified as obsolete and requires a compatible fuse holder (3AB, 3AG format). Due to its obsolete product status, equivalent substitute parts from active manufacturers are necessary to maintain system functionality and ensure continued availability for replacement applications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Current Rating | 200 mA |
| Voltage Rating (AC) | 250 V |
| Fuse Type | Cartridge, Ceramic |
| Response Time | Slow Blow |
| Package / Case | 3AB, 3AG, 1/4" x 1-1/4" |
| Size / Dimension | 0.250" Dia x 1.250" L (6.35mm x 31.75mm) |
| Mounting Type | Requires Holder |
| Approval Agency | CSA, UL |
Substitute Part Grouping Explanation
Substitute parts for the BK/MDA-2/10 are qualified based on strict electrical and mechanical parameter matching:
Qualifying Parameters:
- Current Rating: 200 mA (exact match required)
- Voltage Rating (AC): 250 V (exact match required)
- Fuse Type: Cartridge, Ceramic (exact match required)
- Response Time: Slow Blow (exact match required)
- Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (exact match required)
- Size / Dimension: 0.250" Dia x 1.250" L (6.35mm x 31.75mm) (exact match required)
- Mounting Type: Requires Holder (exact match required)
All three substitute parts from Littelfuse Inc. (0326.200HXP, 0326.200MXP, 0326.200VXP) meet these criteria and are classified as active products with current manufacturing status.
Parameter Comparison
| Parameter | BK/MDA-2/10 (Eaton) | 0326.200HXP (Littelfuse) | 0326.200MXP (Littelfuse) | 0326.200VXP (Littelfuse) |
|---|---|---|---|---|
| Current Rating (Amps) | 200 mA | 200 mA | 200 mA | 200 mA |
| Voltage Rating - AC | 250 V | 250 V | 250 V | 250 V |
| Fuse Type | Cartridge, Ceramic | Cartridge, Ceramic | Cartridge, Ceramic | Cartridge, Ceramic |
| Response Time | Slow Blow | Slow Blow | Slow Blow | Slow Blow |
| Package / Case | 3AB, 3AG, 1/4" x 1-1/4" | 3AB, 3AG, 1/4" x 1-1/4" | 3AB, 3AG, 1/4" x 1-1/4" | 3AB, 3AG, 1/4" x 1-1/4" |
| Size / Dimension | 0.250" Dia x 1.250" L (6.35mm x 31.75mm) | 0.250" Dia x 1.250" L (6.35mm x 31.75mm) | 0.250" Dia x 1.250" L (6.35mm x 31.75mm) | 0.250" Dia x 1.250" L (6.35mm x 31.75mm) |
| Mounting Type | Requires Holder | Requires Holder | Requires Holder | Requires Holder |
| Breaking Capacity @ Rated Voltage | Not specified | 100A | 100A | 100A |
| Melting I²t | Not specified | 0.213 | 0.213 | 0.213 |
| Operating Temperature | Not specified | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C |
| DC Cold Resistance | Not specified | 6.77 Ohms | 6.77 Ohms | 6.77 Ohms |
| Product Status | Obsolete | Active | Active | Active |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Approval Agency | CSA, UL | CE | CE | CE |
Engineering Selection Recommendations
Product Status Consideration: The BK/MDA-2/10 is obsolete. All three Littelfuse substitute parts (0326.200HXP, 0326.200MXP, 0326.200VXP) are active products with current manufacturing status, ensuring long-term availability and supply chain continuity.
Compliance Consideration: The original BK/MDA-2/10 carries CSA and UL approvals but is RoHS non-compliant. All substitute parts are ROHS3 compliant and carry CE certification, meeting modern regulatory requirements for new designs and replacements in regulated environments.
Electrical and Mechanical Compatibility: All three substitute parts satisfy the mandatory electrical parameters (200 mA, 250 V AC/DC, Slow Blow response) and mechanical specifications (3AB/3AG package, 0.250" Dia x 1.250" L dimensions). They are directly compatible with existing 3AB/3AG fuse holders.
Inventory Availability:
- 0326.200MXP: 1377 Pcs in stock (highest availability)
- 0326.200VXP: 847 Pcs in stock
- 0326.200HXP: 685 Pcs in stock
Frequently Asked Questions (FAQ)
Q: Can the Littelfuse 0326.200MXP, 0326.200VXP, or 0326.200HXP be used as direct replacements for the BK/MDA-2/10?
A: Yes. All three Littelfuse parts match the critical electrical parameters (200 mA, 250 V AC/DC, Slow Blow) and mechanical specifications (3AB/3AG package, 0.250" Dia x 1.250" L). They are mechanically and electrically compatible with existing 3AB/3AG fuse holders.
Q: What is the difference between the three Littelfuse substitute parts?
A: The 0326.200HXP, 0326.200MXP, and 0326.200VXP are functionally equivalent. All share identical electrical ratings, response characteristics, and physical dimensions. The differences in part number designations reflect internal Littelfuse product line variations but do not affect substitution compatibility.
Q: Does the BK/MDA-2/10 require a specific fuse holder?
A: Yes. The BK/MDA-2/10 requires a 3AB or 3AG format fuse holder. All substitute parts use the same holder format and are directly compatible with existing installations.
Q: Are the Littelfuse substitutes RoHS compliant?
A: Yes. All three Littelfuse substitute parts (0326.200HXP, 0326.200MXP, 0326.200VXP) are ROHS3 compliant, whereas the original BK/MDA-2/10 is RoHS non-compliant.
Q: What certifications do the substitute parts carry?
A: The Littelfuse substitute parts carry CE certification. The original BK/MDA-2/10 carries CSA and UL approvals. Certification differences should be evaluated against specific application requirements.
Q: Which substitute part should be selected for new designs?
A: All three Littelfuse parts are suitable for new designs. Selection should be based on inventory availability and internal procurement preferences. The 0326.200MXP offers the highest stock level (1377 Pcs).
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