Equivalent & Substitute Parts for BK/PCB-3/4

Part Overview

The BK/PCB-3/4 is a 750 mA 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, which necessitates identification of active equivalent alternatives for ongoing design and procurement requirements. The fuse features fast blow response characteristics and is approved by CSA and UL agencies. Substitute parts are available from the same manufacturer with identical electrical and mechanical specifications but active product status.

Substiute Parts

BK/PCB-3/4

Eaton - Electronics DivisionIn Stock: 1084BK/PCB-3/4 Datasheet

Current PartRFQ

BK/PCB-3/4-R

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

DirectRFQ

BK/PCC-3/4-R

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

Parametric EquivalentRFQ

BK/PCF-3/4-R

Eaton - Electronics DivisionIn Stock: 1202BK/PCF-3/4-R Datasheet

Parametric EquivalentRFQ

BK/PCH-3/4-R

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

Parametric EquivalentRFQ

PCB-3/4-R

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

Parametric EquivalentRFQ

PCC-3/4-R

Eaton - Electronics DivisionIn Stock: 721PCC-3/4-R Datasheet

Parametric EquivalentRFQ

PCF-3/4-R

Eaton - Electronics DivisionIn Stock: 1173PCF-3/4-R Datasheet

Parametric EquivalentRFQ

PCH-3/4-R

Eaton - Electronics DivisionIn Stock: 1010PCH-3/4-R Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete BK/PCB-3/4 is based on strict electrical and mechanical parameter equivalence. All substitute parts maintain identical specifications across the following critical parameters:

• Current Rating: 750 mA
• Voltage Rating - AC: 250 V
• Voltage Rating - DC: 450 V
• Response Time: Fast Blow
• Fuse Type: Board Mount (Cartridge Style Excluded)
• Mounting Type: Through Hole
• Package / Case: Radial, Box
• Physical Dimensions: 0.350" L x 0.184" W x 0.345" H (8.89mm x 4.67mm x 8.76mm)
• Breaking Capacity @ Rated Voltage: 50A AC, 5.9kA DC
• Melting I²t: 0.016
• Approval Agency: CSA, UL
• Series: PC-Tron®

All substitute parts are manufactured by Eaton - Electronics Division and carry active product status. Substitute parts are available in bulk packaging and comply with ROHS3 standards, whereas the original BK/PCB-3/4 is RoHS non-compliant.

Parameter Comparison

Engineering Selection Recommendations

The BK/PCB-3/4 is classified as obsolete and should be replaced with an active equivalent for new designs and ongoing procurement. All listed substitute parts are manufactured by Eaton - Electronics Division and provide identical electrical and mechanical performance.

Primary Recommendation: BK/PCB-3/4-R is the direct active equivalent with the highest inventory availability (1946 pcs). This part maintains the BK/ prefix designation and carries ROHS3 compliance certification.

Alternative Selections: BK/PCC-3/4-R, BK/PCF-3/4-R, and BK/PCH-3/4-R are parametric equivalents with active status and ROHS3 compliance. These variants differ only in internal construction characteristics not specified in the provided parameters.

Non-Prefixed Variants: PCB-3/4-R, PCC-3/4-R, PCF-3/4-R, and PCH-3/4-R are functionally equivalent alternatives without the BK/ prefix designation. These parts maintain identical electrical specifications and ROHS3 compliance.

All substitute parts are approved by CSA and UL agencies and are suitable for direct replacement in applications requiring 750 mA board mount fuses with 250 V AC and 450 V DC ratings.

Frequently Asked Questions (FAQ)

Q: Can BK/PCB-3/4-R be used as a direct replacement for the obsolete BK/PCB-3/4?

A: Yes. BK/PCB-3/4-R is the direct active equivalent with identical electrical and mechanical specifications. The primary difference is product status (active versus obsolete) and RoHS compliance (ROHS3 compliant versus non-compliant).

Q: What is the difference between BK/PCB-3/4-R and PCB-3/4-R?

A: Both parts are parametric equivalents with identical electrical and mechanical specifications. The BK/ prefix designation indicates a specific internal construction variant. Selection between these parts depends on design requirements and internal construction preferences not specified in the electrical parameters.

Q: Are all substitute parts physically interchangeable?

A: Yes. All substitute parts share identical physical dimensions (0.350" L x 0.184" W x 0.345" H), mounting type (Through Hole), and package configuration (Radial, Box). They are mechanically interchangeable on PCBs designed for the BK/PCB-3/4.

Q: Do all substitute parts meet the same approval standards?

A: Yes. All substitute parts carry CSA and UL approval certifications identical to the original BK/PCB-3/4.

Q: What is the significance of the -R suffix in substitute part numbers?

A: The -R suffix indicates bulk packaging and active product status. These parts are available in higher quantities and are actively manufactured by Eaton - Electronics Division.

Q: Are there any electrical performance differences between the substitute parts?

A: No. All substitute parts maintain identical current rating (750 mA), voltage ratings (250 V AC, 450 V DC), response time (Fast Blow), breaking capacity (50A AC, 5.9kA DC), and melting I²t (0.016).

Q: Which substitute part should be selected for new designs?

A: BK/PCB-3/4-R is recommended for new designs as the direct active equivalent with the highest inventory availability. Alternative parts (BK/PCC-3/4-R, BK/PCF-3/4-R, BK/PCH-3/4-R) are suitable if specific internal construction characteristics are required.

Q: Is RoHS3 compliance a requirement for substitution?

A: All active substitute parts are ROHS3 compliant. The original BK/PCB-3/4 is RoHS non-compliant. Selection of ROHS3 compliant substitutes aligns with current regulatory requirements for electronic components.