SCHURTER 3-103-114 Surface Mount Fuse – Equivalent & Substitute Parts

Part Overview

The SCHURTER 3-103-114 is a 2 A, 125 V AC/DC board mount surface mount fuse in 2-SMD, Square End Block package format. This fast-blow fuse is designed for circuit protection in surface mount applications with a breaking capacity of 50 A AC and 300 A DC. The part is active in production status and carries cURus and UL approvals. Substitute parts are identified to address packaging format changes, inventory availability, or equivalent current rating requirements while maintaining electrical and mechanical compatibility within the MGA series fuse family.

Substiute Parts

3-103-114

SCHURTER Inc.In Stock: 10743-103-114 Datasheet

Current PartRFQ

3410.0033.02

SCHURTER Inc.In Stock: 12793410.0033.02 Datasheet

UpgradeRFQ

3410.0033.03

SCHURTER Inc.In Stock: 67113410.0033.03 Datasheet

UpgradeRFQ

3-103-115

SCHURTER Inc.In Stock: 36063-103-115 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 3-103-114 are classified into two categories based on allowed parameter variations:

Parametric Equivalent (Same Current Rating): Part 3-103-115 maintains identical electrical specifications (2 A, 125 V AC/DC, Fast Blow) and mechanical dimensions. The only difference is packaging format: 3-103-115 is supplied in Cut Tape (CT) format versus Tape & Reel (TR) for the main part. Both carry the same series designation (MGA-A) and approval agencies (cURus, UL).

Upgrade Substitutes (Lower Current Rating): Parts 3410.0033.02 and 3410.0033.03 are rated at 1.5 A instead of 2 A. These parts share identical voltage ratings (125 V AC/DC), response time (Fast Blow), mounting type (Surface Mount), package format (2-SMD, Square End Block), and physical dimensions. Both are part of the MGA series. The 1.5 A rating represents a more conservative protection threshold and may be used in applications where the lower current rating is acceptable. Part 3410.0033.03 has higher inventory availability (6602 pcs) compared to 3410.0033.02 (1218 pcs).

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Parametric Equivalent): Part 3-103-115 is a direct parametric equivalent suitable for applications where packaging format flexibility is acceptable. Both the main part and 3-103-115 carry identical electrical ratings, mechanical dimensions, and approval certifications (cURus, UL). Selection between Tape & Reel (3-103-114) and Cut Tape (3-103-115) formats depends on assembly process requirements and volume considerations.

For Lower Current Rating Applications: Parts 3410.0033.02 and 3410.0033.03 are suitable only for applications where a 1.5 A protection threshold is acceptable. These parts maintain all other electrical and mechanical parameters identical to the main part, including voltage ratings, response time, breaking capacity, and physical dimensions. The MGA series designation confirms compatibility within the fuse family. Part 3410.0033.03 is preferred for new designs due to higher inventory availability (6602 pcs versus 1218 pcs for 3410.0033.02). Note that these parts carry cURus approval only; applications requiring UL certification should use the main part or 3-103-115.

All substitute parts are active in production status and ROHS3 compliant, confirming regulatory alignment with the main part.

Frequently Asked Questions (FAQ)

Q: Can 3-103-115 be used as a direct replacement for 3-103-114? A: Yes. Part 3-103-115 is a parametric equivalent with identical electrical specifications (2 A, 125 V AC/DC, Fast Blow), mechanical dimensions, and approval certifications. The only difference is packaging format: 3-103-115 is supplied in Cut Tape (CT) versus Tape & Reel (TR) for 3-103-114. Selection depends on assembly process compatibility.

Q: What is the difference between the main part and the 1.5 A upgrade substitutes? A: The primary difference is current rating: 3-103-114 is rated at 2 A, while 3410.0033.02 and 3410.0033.03 are rated at 1.5 A. All other parameters—voltage ratings, response time, breaking capacity, physical dimensions, and mounting type—remain identical. The 1.5 A rating provides more conservative circuit protection and may be used only in applications where this lower threshold is acceptable.

Q: Are 3410.0033.02 and 3410.0033.03 interchangeable? A: Yes. Both parts have identical electrical and mechanical specifications (1.5 A, 125 V AC/DC, Fast Blow, 2-SMD Square End Block). The difference is inventory availability: 3410.0033.03 has 6602 pcs in stock versus 1218 pcs for 3410.0033.02. For new designs, 3410.0033.03 is preferred due to higher availability.

Q: Do all substitute parts carry the same approvals as the main part? A: No. The main part (3-103-114) and 3-103-115 carry both cURus and UL approvals. Parts 3410.0033.02 and 3410.0033.03 carry cURus approval only. Applications requiring UL certification must use 3-103-114 or 3-103-115.

Q: Are the physical dimensions identical across all parts? A: Yes. All parts—3-103-114, 3-103-115, 3410.0033.02, and 3410.0033.03—share identical dimensions: 0.126" L x 0.061" W x 0.061" H (3.20mm x 1.55mm x 1.55mm). All use the 2-SMD, Square End Block package format and are compatible with the same PCB footprints.

Q: What is the difference in operating temperature range? A: The main part (3-103-114) and 3-103-115 operate from -55°C to 125°C. Parts 3410.0033.02 and 3410.0033.03 have an extended upper temperature limit of -55°C to 150°C. For applications requiring operation above 125°C, the 1.5 A rated parts provide additional thermal margin.