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SCHURTER 3-103-115 Equivalent & Substitute Parts
Part Overview
The SCHURTER 3-103-115 is a 2A 125VAC/VDC board mount surface mount fuse in 2-SMD square end block configuration. This component is classified as Active product status and is designed for applications requiring fast-blow fuse protection in compact surface mount implementations. Substitute parts are identified to provide equivalent electrical and mechanical performance for component procurement flexibility, inventory management, and supply chain continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Current Rating | 2 A |
| Voltage Rating - AC | 125 V |
| Voltage Rating - DC | 125 V |
| Response Time | Fast Blow |
| Mounting Type | Surface Mount |
| Package / Case | 2-SMD, Square End Block |
| Breaking Capacity @ Rated Voltage | 50A AC, 300A DC |
| Size / Dimension | 0.126" L x 0.061" W x 0.061" H (3.20mm x 1.55mm x 1.55mm) |
| Operating Temperature Range | -55°C ~ 125°C |
| RoHS Status | ROHS3 Compliant |
| Approval Agency | cURus, UL |
Substitute Part Grouping Explanation
Substitution eligibility for the SCHURTER 3-103-115 is determined by the following critical parameters:
- Current Rating: 2 A (exact match required)
- Voltage Rating: 125 V AC and 125 V DC (exact match required)
- Response Time: Fast Blow (exact match required)
- Mounting Type: Surface Mount (exact match required)
- Package / Case: 2-SMD, Square End Block (exact match required)
- Breaking Capacity: 50A AC, 300A DC (exact match required)
- Physical Dimensions: 0.126" L x 0.061" W x 0.061" H (exact match required)
- RoHS Compliance: ROHS3 Compliant (exact match required)
The substitute part 3410.0035.03 meets all critical electrical and mechanical parameters. Packaging format differs (Tape & Reel vs. Cut Tape), which does not affect electrical or mechanical compatibility in board mount applications.
Parameter Comparison
| Parameter | 3-103-115 (Main Part) | 3410.0035.03 (Substitute) | Match Status |
|---|---|---|---|
| Manufacturer | SCHURTER Inc. | SCHURTER Inc. | Match |
| Current Rating (Amps) | 2 A | 2 A | Match |
| Voltage Rating - AC | 125 V | 125 V | Match |
| Voltage Rating - DC | 125 V | 125 V | Match |
| Response Time | Fast Blow | Fast Blow | Match |
| Mounting Type | Surface Mount | Surface Mount | Match |
| Fuse Type | Board Mount (Cartridge Style Excluded) | Board Mount (Cartridge Style Excluded) | Match |
| Package / Case | 2-SMD, Square End Block | 2-SMD, Square End Block | Match |
| Breaking Capacity @ Rated Voltage | 50A AC, 300A DC | 50A AC, 300A DC | Match |
| Size / Dimension | 0.126" L x 0.061" W x 0.061" H (3.20mm x 1.55mm x 1.55mm) | 0.126" L x 0.061" W x 0.061" H (3.20mm x 1.55mm x 1.55mm) | Match |
| Operating Temperature Range | -55°C ~ 125°C | -55°C ~ 150°C | Substitute Exceeds |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | Match |
| Approval Agency | cURus, UL | cURus | Substitute Subset |
| Packaging Format | Cut Tape (CT) | Tape & Reel (TR) | Different |
Engineering Selection Recommendations
Both the SCHURTER 3-103-115 and 3410.0035.03 are Active product status components manufactured by SCHURTER Inc. and maintain ROHS3 compliance. The substitute part 3410.0035.03 provides equivalent electrical performance with an extended operating temperature range (-55°C ~ 150°C vs. -55°C ~ 125°C), offering enhanced thermal margin for applications operating at elevated temperatures.
The primary distinction between these parts is packaging format: the main part is supplied in Cut Tape (CT) configuration, while the substitute is supplied in Tape & Reel (TR) configuration. This difference does not affect electrical or mechanical compatibility and is determined by procurement volume and assembly line requirements.
Selection between these parts should be based on packaging requirements and inventory availability rather than electrical performance, as both components satisfy identical functional specifications for board mount fuse applications.
Frequently Asked Questions (FAQ)
Q: Can 3410.0035.03 be used as a direct replacement for 3-103-115 in existing designs?
A: Yes. Both parts share identical electrical ratings (2A, 125VAC/VDC), response time (Fast Blow), breaking capacity (50A AC, 300A DC), physical dimensions (0.126" L x 0.061" W x 0.061" H), and mounting configuration (Surface Mount, 2-SMD Square End Block). The substitute part meets or exceeds all critical parameters.
Q: What is the difference between Cut Tape and Tape & Reel packaging?
A: Cut Tape (CT) packaging supplies components in individual tape segments suitable for lower-volume or manual assembly operations. Tape & Reel (TR) packaging supplies components on continuous reels optimized for high-speed automated assembly equipment. Both formats contain identical components; packaging selection depends on assembly process requirements and order volume.
Q: Does the extended operating temperature range of 3410.0035.03 affect compatibility?
A: No. The substitute part's extended temperature range (-55°C ~ 150°C vs. -55°C ~ 125°C) represents an enhancement that does not compromise compatibility. Applications operating within the original temperature specification (-55°C ~ 125°C) will function identically with either part.
Q: Are both parts RoHS compliant?
A: Yes. Both the SCHURTER 3-103-115 and 3410.0035.03 are ROHS3 Compliant, meeting current environmental and regulatory requirements for electronic component manufacturing.
Q: What approval agencies certify these fuses?
A: The main part 3-103-115 carries cURus and UL approvals. The substitute part 3410.0035.03 carries cURus approval. Both certifications confirm compliance with recognized safety standards for board mount fuse applications.
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