BK/PCH-3/4-R Equivalent & Substitute Parts

Part Overview

The BK/PCH-3/4-R is a 750 mA, 250 V AC / 450 V DC board mount fuse manufactured by Eaton - Electronics Division as part of the PC-Tron® series. This through-hole radial fuse features fast-blow response characteristics and is designed for circuit protection in electronic applications requiring high DC voltage ratings. The part maintains active product status with CSA and UL approval certifications. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design continuity across manufacturing environments.

Substiute Parts

BK/PCH-3/4-R

Eaton - Electronics DivisionIn Stock: 1108BK/PCH-3/4-R Datasheet

Current PartRFQ

BK/PCB-3/4-R

Eaton - Electronics DivisionIn Stock: 2006BK/PCB-3/4-R Datasheet

Parametric EquivalentRFQ

BK/PCC-3/4-R

Eaton - Electronics DivisionIn Stock: 1580BK/PCC-3/4-R Datasheet

Parametric EquivalentRFQ

PCB-3/4-R

Eaton - Electronics DivisionIn Stock: 1029PCB-3/4-R Datasheet

Parametric EquivalentRFQ

7100.1164.13

SCHURTER Inc.In Stock: 13437100.1164.13 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BK/PCH-3/4-R are classified into two categories based on electrical and mechanical parameter alignment:

Parametric Equivalents (Full Compatibility): Parts BK/PCB-3/4-R, BK/PCC-3/4-R, and PCB-3/4-R are direct parametric equivalents. These parts share identical electrical specifications across all critical parameters: 750 mA current rating, 250 V AC / 450 V DC voltage ratings, fast-blow response, 50A AC / 5.9kA DC breaking capacity, 0.016 melting I²t, and identical physical dimensions. All three parts are manufactured by Eaton - Electronics Division within the PC-Tron® series and carry CSA and UL certifications. These parts are interchangeable for direct board-level substitution without circuit redesign.

Similar Part (Functional Alternative): Part 7100.1164.13 manufactured by SCHURTER Inc. is classified as a similar part rather than a direct equivalent. While this part shares the same mounting type (through-hole), fuse type (board mount), package style (radial, box), response time (fast-blow), and AC voltage rating (250 V), it differs in critical electrical parameters. The SCHURTER part features 800 mA current rating (versus 750 mA), 250 V DC rating (versus 450 V DC), 35A breaking capacity (versus 50A AC / 5.9kA DC), and 0.21 melting I²t (versus 0.016). Physical dimensions also differ. This part is suitable only for applications where the lower DC voltage rating and higher current rating are acceptable.

Parameter Comparison

Engineering Selection Recommendations

For Direct Substitution: Parts BK/PCB-3/4-R, BK/PCC-3/4-R, and PCB-3/4-R are approved for direct substitution in applications currently using BK/PCH-3/4-R. All three parts maintain identical electrical and mechanical specifications, carry equivalent CSA and UL certifications, and comply with ROHS3 requirements. Selection among these three parametric equivalents may be based on inventory availability and procurement lead times.

For Alternative Selection: Part 7100.1164.13 from SCHURTER Inc. is suitable only for applications where the following conditions are met: the circuit operates at DC voltages not exceeding 250 V (versus the 450 V DC rating of the primary part), the application tolerates 800 mA current rating (versus 750 mA), and the lower breaking capacity of 35A is sufficient for the circuit protection requirements. The SCHURTER part carries cURus certification and ROHS3 compliance. Physical dimension differences require PCB layout verification before implementation.

All substitute parts listed maintain active product status and are available in bulk packaging with current inventory levels supporting procurement requirements.

Frequently Asked Questions (FAQ)

Q: Can BK/PCB-3/4-R, BK/PCC-3/4-R, and PCB-3/4-R be used interchangeably with BK/PCH-3/4-R?

A: Yes. These three parts are parametric equivalents with identical current ratings (750 mA), voltage ratings (250 V AC / 450 V DC), response times (fast-blow), breaking capacities (50A AC / 5.9kA DC), melting I²t values (0.016), and physical dimensions. All carry CSA and UL certifications and are ROHS3 compliant. Direct board-level substitution is supported without circuit modification.

Q: What are the key differences between the Eaton PC-Tron® parts and the SCHURTER 7100.1164.13?

A: The SCHURTER part differs in three critical electrical parameters: current rating (800 mA versus 750 mA), DC voltage rating (250 V versus 450 V), and breaking capacity (35A versus 50A AC / 5.9kA DC). The melting I²t is also higher (0.21 versus 0.016), and physical dimensions are larger. These differences restrict the SCHURTER part to applications with lower DC voltage requirements and lower fault current levels.

Q: Are physical dimensions identical across all Eaton parametric equivalents?

A: Yes. BK/PCH-3/4-R, BK/PCB-3/4-R, BK/PCC-3/4-R, and PCB-3/4-R all share identical dimensions of 0.350" L x 0.184" W x 0.345" H (8.89mm x 4.67mm x 8.76mm). The SCHURTER 7100.1164.13 has different dimensions (0.453" L x 0.197" W x 0.315" H) and requires PCB layout verification.

Q: Which certifications apply to each substitute part?

A: BK/PCH-3/4-R, BK/PCB-3/4-R, BK/PCC-3/4-R, and PCB-3/4-R carry CSA and UL certifications. The SCHURTER 7100.1164.13 carries cURus certification. All parts comply with ROHS3 requirements.

Q: Can the SCHURTER 7100.1164.13 be used in a circuit designed for 450 V DC operation?

A: No. The SCHURTER part has a maximum DC voltage rating of 250 V and is not suitable for circuits operating at 450 V DC. Use only the Eaton parametric equivalents (BK/PCB-3/4-R, BK/PCC-3/4-R, or PCB-3/4-R) for applications requiring 450 V DC rating.

Q: What is the melting I²t parameter and why does it differ between parts?

A: Melting I²t represents the thermal energy required to melt the fuse element and is expressed in ampere-squared seconds. The Eaton parts have a melting I²t of 0.016, while the SCHURTER part has 0.21. Lower values indicate faster thermal response and are appropriate for sensitive circuit protection. The difference reflects different fuse element designs and thermal characteristics.

Q: Are all substitute parts available in bulk packaging?

A: Yes. All listed parts are available in bulk packaging. Current inventory levels are: BK/PCH-3/4-R (1061 pcs), BK/PCB-3/4-R (1946 pcs), BK/PCC-3/4-R (1485 pcs), PCB-3/4-R (983 pcs), and 7100.1164.13 (1238 pcs).