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SCHURTER 7010.9912.55 Equivalent & Substitute Parts
Part Overview
The SCHURTER 7010.9912.55 is a 4 A surface mount board mount fuse with fast blow response time, designed for AC/DC applications. The fuse features a 2-SMD square end block package and operates across a temperature range of -55°C to 85°C. This part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for ongoing production and repair applications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer | SCHURTER Inc. |
| Series | MKF |
| Current Rating | 4 A |
| Fuse Type | Board Mount (Cartridge Style Excluded) |
| Mounting Type | Surface Mount |
| Response Time | Fast Blow |
| Package / Case | 2-SMD, Square End Block |
| Size / Dimension | 0.276" L x 0.100" W x 0.100" H (7.00mm x 2.54mm x 2.54mm) |
| Operating Temperature | -55°C ~ 85°C |
| Approval Agency | cURus |
Substitute Part Grouping Explanation
Substitution of the SCHURTER 7010.9912.55 is determined by the following critical parameters:
Electrical Parameters:
- Current Rating: 4 A (exact match required)
- Response Time: Fast Blow (exact match required)
- Fuse Type: Board Mount (Cartridge Style Excluded) (exact match required)
Mechanical Parameters:
- Mounting Type: Surface Mount (exact match required)
- Package / Case: 2-SMD, Square End Block (exact match required)
- Size / Dimension: 0.276" L x 0.100" W x 0.100" H / 7.00mm x 2.54mm x 2.54mm (exact match required)
Environmental Parameters:
- Operating Temperature: -55°C ~ 85°C (exact match required)
Substitute parts must satisfy all parameters listed above. Additional parameters such as voltage rating, breaking capacity, and compliance certifications provide enhanced specifications but do not restrict substitution eligibility when the core parameters align.
Parameter Comparison
| Parameter | 7010.9912.55 (Main Part) | 7010.9912.57 (Substitute) | 7010.9912.03 (Substitute) |
|---|---|---|---|
| Manufacturer | SCHURTER Inc. | SCHURTER Inc. | SCHURTER Inc. |
| Series | MKF | MKF | MKF |
| Current Rating (Amps) | 4 A | 4 A | 4 A |
| Fuse Type | Board Mount (Cartridge Style Excluded) | Board Mount (Cartridge Style Excluded) | Board Mount (Cartridge Style Excluded) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount |
| Response Time | Fast Blow | Fast Blow | Fast Blow |
| Package / Case | 2-SMD, Square End Block | 2-SMD, Square End Block | 2-SMD, Square End Block |
| Size / Dimension | 0.276" L x 0.100" W x 0.100" H (7.00mm x 2.54mm x 2.54mm) | 0.276" L x 0.100" W x 0.100" H (7.00mm x 2.54mm x 2.54mm) | 0.276" L x 0.100" W x 0.100" H (7.00mm x 2.54mm x 2.54mm) |
| Operating Temperature | -55°C ~ 85°C | -55°C ~ 85°C | -55°C ~ 85°C |
| Approval Agency | cURus | cURus | cURus |
| Voltage Rating - AC | Not specified | 125 V | 125 V |
| Voltage Rating - DC | Not specified | 125 V | 125 V |
| Breaking Capacity @ Rated Voltage | Not specified | 300 A | 300 A |
| Melting I²t | Not specified | 2.6 | 2.6 |
| Product Status | Obsolete | Active | Active |
| RoHS Status | Not specified | ROHS3 Compliant | ROHS3 Compliant |
| REACH Status | Not specified | REACH Unaffected | REACH Unaffected |
Engineering Selection Recommendations
Both SCHURTER 7010.9912.57 and SCHURTER 7010.9912.03 are direct substitutes for the obsolete SCHURTER 7010.9912.55. Both substitute parts are classified as active products, ensuring continued availability and supply chain reliability.
SCHURTER 7010.9912.57 is available in standard packaging with 889 pieces in current inventory.
SCHURTER 7010.9912.03 is available in bulk packaging with 1190 pieces in current inventory and is designated as the parametric equivalent within the MKF series base product number 7010.9912.
Both substitute parts carry cURus approval certification, ROHS3 compliance, and REACH unaffected status. The substitute parts provide specified voltage ratings (125 V AC/DC) and breaking capacity (300 A) that were not documented for the main part, offering enhanced electrical performance specifications.
Frequently Asked Questions (FAQ)
Q: Can SCHURTER 7010.9912.57 or 7010.9912.03 be used as direct replacements for 7010.9912.55?
A: Yes. Both parts satisfy all critical electrical and mechanical parameters: 4 A current rating, fast blow response time, surface mount 2-SMD square end block package, identical physical dimensions (7.00mm x 2.54mm x 2.54mm), and -55°C to 85°C operating temperature range.
Q: What is the difference between SCHURTER 7010.9912.57 and 7010.9912.03?
A: The primary difference is packaging. SCHURTER 7010.9912.57 is supplied in standard packaging, while SCHURTER 7010.9912.03 is supplied in bulk packaging. Both parts are electrically and mechanically identical, with identical specifications for current rating, voltage rating, breaking capacity, and melting I²t.
Q: Are the substitute parts compliant with current regulatory standards?
A: Yes. Both SCHURTER 7010.9912.57 and 7010.9912.03 are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.
Q: Does the voltage rating difference affect substitution eligibility?
A: No. The main part 7010.9912.55 does not specify voltage ratings, while the substitute parts specify 125 V AC and 125 V DC. The substitute parts provide documented voltage specifications that do not restrict their use in applications where the main part was previously applied.
Q: Are both substitute parts currently available?
A: Yes. SCHURTER 7010.9912.57 has 889 pieces in inventory, and SCHURTER 7010.9912.03 has 1190 pieces in inventory. Both are classified as active products.
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