Equivalent & Substitute Parts for TR/PCB-1-SD

Part Overview

The TR/PCB-1-SD is a 1 A, 250 V AC / 450 V DC board mount fuse manufactured by Eaton - Electronics Division under the PC-Tron® series. This through-hole radial fuse features fast-blow response characteristics and is designed for applications requiring reliable overcurrent protection in industrial and electronic equipment.

The TR/PCB-1-SD carries an obsolete product status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing maintenance and production requirements for systems utilizing this component.

Substiute Parts

TR/PCB-1-SD

Eaton - Electronics DivisionIn Stock: 965TR/PCB-1-SD Datasheet

Current PartRFQ

TR/PCB-1-R

Eaton - Electronics DivisionIn Stock: 4734TR/PCB-1-R Datasheet

DirectRFQ

7100.1165.95

SCHURTER Inc.In Stock: 12137100.1165.95 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TR/PCB-1-SD are classified based on electrical and mechanical parameter alignment:

Direct Substitute (Identical Electrical and Mechanical Parameters): The TR/PCB-1-R from Eaton - Electronics Division maintains all critical electrical specifications: 1 A current rating, 250 V AC / 450 V DC voltage ratings, fast-blow response, 50A AC / 5.9kA DC breaking capacity, and identical physical dimensions. This part differs only in packaging format (Cut Tape versus box) and product status (Active versus Obsolete). The TR/PCB-1-R is the primary direct replacement.

Similar Substitute (Partial Parameter Alignment): The 7100.1165.95 from SCHURTER Inc. shares the same current rating (1 A), AC voltage rating (250 V), response time (fast-blow), mounting type (through-hole), and fuse type (board mount radial). However, this part operates at a reduced DC voltage rating of 250 V (versus 450 V DC on the main part), features different breaking capacity (63A versus 50A AC), different melting I²t (0.18 versus 0.02), and different physical dimensions. This part is suitable only for applications where the 250 V DC maximum voltage requirement is acceptable.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Recommended Primary Option): The TR/PCB-1-R is the recommended substitute for the obsolete TR/PCB-1-SD. Both parts are manufactured by Eaton - Electronics Division and maintain identical electrical specifications across all critical parameters: current rating, AC/DC voltage ratings, breaking capacity, and melting I²t. The TR/PCB-1-R carries active product status and ROHS3 compliance, supporting long-term supply chain availability and regulatory requirements. The only functional difference is packaging format (Cut Tape versus box), which does not affect electrical or mechanical performance. This part is suitable for direct board-level substitution without circuit redesign.

For Alternative Substitution (Conditional Use): The 7100.1165.95 from SCHURTER Inc. may be considered only in applications where the reduced DC voltage rating of 250 V is acceptable. This part is not suitable for circuits requiring the full 450 V DC rating of the original TR/PCB-1-SD. Additionally, the different melting I²t (0.18 versus 0.02) and breaking capacity characteristics require circuit analysis to confirm compatibility with the intended protection scheme. The SCHURTER part carries cURus certification and ROHS3 compliance. Physical dimensions differ, requiring PCB layout verification before implementation.

Frequently Asked Questions (FAQ)

Q: Can TR/PCB-1-R be used as a direct replacement for TR/PCB-1-SD without any modifications?

A: Yes. The TR/PCB-1-R is electrically and mechanically identical to the TR/PCB-1-SD across all critical parameters: 1 A current rating, 250 V AC / 450 V DC voltage ratings, fast-blow response, breaking capacity, and physical dimensions. The only difference is packaging format (Cut Tape versus box), which does not affect circuit performance. No PCB modifications are required.

Q: What is the key limitation of the 7100.1165.95 as a substitute?

A: The 7100.1165.95 operates at a maximum DC voltage of 250 V, compared to 450 V DC for the TR/PCB-1-SD. This part is not suitable for circuits where the full 450 V DC rating is required. Additionally, the melting I²t differs (0.18 versus 0.02), which affects the fuse's thermal response characteristics and may alter circuit protection behavior.

Q: Are there physical dimension differences between the substitute parts?

A: The TR/PCB-1-R maintains identical dimensions to the TR/PCB-1-SD (0.350" L x 0.184" W x 0.345" H). The 7100.1165.95 has different dimensions (0.453" L x 0.197" W x 0.315" H), requiring PCB layout verification before implementation.

Q: What are the compliance differences between the substitute parts?

A: The TR/PCB-1-SD is RoHS non-compliant. Both substitute parts (TR/PCB-1-R and 7100.1165.95) are ROHS3 compliant, supporting modern regulatory requirements. The TR/PCB-1-R maintains CSA and UL certifications identical to the original part. The 7100.1165.95 carries cURus certification.

Q: Is the TR/PCB-1-R available in sufficient inventory for production requirements?

A: Yes. The TR/PCB-1-R has 4,629 pieces in stock as new original inventory, providing substantial availability for production and maintenance applications. The obsolete TR/PCB-1-SD has 864 pieces remaining in stock.