BK/PCH-1-1/2 Equivalent & Substitute Parts

Part Overview

The BK/PCH-1-1/2 is a 1.5 A board mount fuse rated for 250 V AC and 450 V DC operation, manufactured by Eaton - Electronics Division as part of the PC-Tron® series. This component is classified as obsolete, indicating it has been discontinued from active production. The fuse features a through-hole radial mounting configuration with fast-blow response characteristics and is approved by CSA and UL agencies.

Due to the obsolete status of the BK/PCH-1-1/2, identifying equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for repair, maintenance, and new production applications. Active alternatives within the PC-Tron® series provide identical electrical and mechanical specifications while offering current manufacturing support and improved compliance status.

Substiute Parts

BK/PCH-1-1/2

Eaton - Electronics DivisionIn Stock: 834BK/PCH-1-1/2 Datasheet

Current PartRFQ

BK/PCH-1-1/2-R

Eaton - Electronics DivisionIn Stock: 981BK/PCH-1-1/2-R Datasheet

DirectRFQ

BK/PCB-1-1/2-R

Eaton - Electronics DivisionIn Stock: 1645BK/PCB-1-1/2-R Datasheet

Parametric EquivalentRFQ

BK/PCC-1-1/2-R

Eaton - Electronics DivisionIn Stock: 2686BK/PCC-1-1/2-R Datasheet

Parametric EquivalentRFQ

BK/PCF-1-1/2-R

Eaton - Electronics DivisionIn Stock: 1010BK/PCF-1-1/2-R Datasheet

Parametric EquivalentRFQ

PCB-1-1/2-R

Eaton - Electronics DivisionIn Stock: 1239PCB-1-1/2-R Datasheet

Parametric EquivalentRFQ

PCC-1-1/2-R

Eaton - Electronics DivisionIn Stock: 1024PCC-1-1/2-R Datasheet

Parametric EquivalentRFQ

PCF-1-1/2-R

Eaton - Electronics DivisionIn Stock: 827PCF-1-1/2-R Datasheet

Parametric EquivalentRFQ

PCH-1-1/2-R

Eaton - Electronics DivisionIn Stock: 852PCH-1-1/2-R Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BK/PCH-1-1/2 is based on strict equivalence across all critical electrical and mechanical parameters. All substitute parts maintain identical specifications for current rating, voltage ratings (AC and DC), response time, mounting configuration, breaking capacity, melting I²t, physical dimensions, and approval certifications.

The substitute parts are grouped into two categories:

Direct Manufacturer Equivalent: BK/PCH-1-1/2-R represents the direct active replacement manufactured by Eaton - Electronics Division with identical specifications and improved RoHS3 compliance status.

Parametric Equivalents: BK/PCB-1-1/2-R, BK/PCC-1-1/2-R, BK/PCF-1-1/2-R, PCB-1-1/2-R, PCC-1-1/2-R, and PCF-1-1/2-R are functionally equivalent alternatives within the PC-Tron® series. These parts share all critical electrical parameters, mechanical dimensions, mounting characteristics, and approval certifications with the original BK/PCH-1-1/2.

Key Parameters Determining Substitution:

• Current Rating: 1.5 A
• Voltage Rating - AC: 250 V
• Voltage Rating - DC: 450 V
• Response Time: Fast Blow
• Breaking Capacity @ Rated Voltage: 50A AC, 5.9kA DC
• Melting I²t: 0.09
• Physical Dimensions: 0.350" L x 0.184" W x 0.345" H
• Mounting Type: Through Hole
• Package / Case: Radial, Box

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: BK/PCH-1-1/2-R is the direct active replacement for the obsolete BK/PCH-1-1/2. This part maintains identical electrical and mechanical specifications while offering active product status and ROHS3 compliance. Selection of BK/PCH-1-1/2-R ensures continuity with the original design intent and provides the most direct substitution path.

Alternative Selections: BK/PCB-1-1/2-R, BK/PCC-1-1/2-R, BK/PCF-1-1/2-R, PCB-1-1/2-R, PCC-1-1/2-R, and PCF-1-1/2-R are parametric equivalents within the PC-Tron® series. All alternatives are active products with ROHS3 compliance and identical electrical performance characteristics. These parts are suitable for applications where the original BK/PCH-1-1/2 was specified, provided that circuit board layout and mechanical mounting accommodate the identical physical dimensions.

All substitute parts carry CSA and UL approval certifications, maintaining the same regulatory compliance profile as the original component. Inventory availability varies across the substitute options, with BK/PCC-1-1/2-R offering the highest stock level at 2626 pieces.

Frequently Asked Questions (FAQ)

Q: Can BK/PCH-1-1/2-R be used as a direct replacement for BK/PCH-1-1/2?

A: Yes. BK/PCH-1-1/2-R is the direct active equivalent manufactured by Eaton - Electronics Division. It maintains identical electrical ratings (1.5 A, 250 V AC, 450 V DC), response time (Fast Blow), breaking capacity (50A AC, 5.9kA DC), physical dimensions (0.350" L x 0.184" W x 0.345" H), and mounting configuration (through-hole radial). The primary difference is product status (active versus obsolete) and improved RoHS3 compliance.

Q: What is the difference between BK/PCH-1-1/2-R and the parametric equivalents like BK/PCB-1-1/2-R?

A: All parts share identical electrical specifications, response characteristics, breaking capacity, melting I²t, physical dimensions, and approval certifications. The differences lie in internal design variations within the PC-Tron® series. From an electrical and mechanical compatibility standpoint, these parts are fully interchangeable in applications requiring 1.5 A, 250 V AC / 450 V DC fast-blow fuses with through-hole radial mounting.

Q: Are the substitute parts compatible with existing circuit board layouts designed for BK/PCH-1-1/2?

A: Yes. All substitute parts maintain the identical physical dimensions of 0.350" L x 0.184" W x 0.345" H (8.89mm x 4.67mm x 8.76mm) and through-hole radial mounting configuration. Direct board-level compatibility is assured without requiring layout modifications.

Q: Do all substitute parts carry the same regulatory approvals as the original BK/PCH-1-1/2?

A: Yes. All substitute parts listed carry CSA and UL approvals, maintaining identical regulatory compliance status. Additionally, all active substitute parts are ROHS3 compliant, providing improved environmental compliance compared to the obsolete original part.

Q: Which substitute part should be selected if multiple options are available?

A: Selection should be based on inventory availability and internal design preferences. BK/PCH-1-1/2-R is the direct manufacturer equivalent and represents the most straightforward substitution. For applications where internal design variations are acceptable, BK/PCC-1-1/2-R offers the highest inventory availability at 2626 pieces. All alternatives are electrically and mechanically equivalent.

Q: What is the melting I²t specification and why is it important for substitution?

A: Melting I²t (0.09) is a thermal characteristic that defines the fuse's response to overcurrent conditions. All substitute parts maintain identical melting I²t values, ensuring equivalent protection characteristics and response behavior in circuit protection applications. This parameter must remain constant for proper substitution.

Q: Are there any packaging differences between the substitute parts?

A: All substitute parts are supplied in bulk packaging. The original BK/PCH-1-1/2 was supplied in box packaging, while all active equivalents use bulk packaging. This represents a packaging format change only and does not affect electrical or mechanical compatibility.