Equivalent & Substitute Parts for BK/PCB-1

Part Overview

The BK/PCB-1 is a 1 A, 250 V AC / 450 V DC board mount fuse with fast blow response time, manufactured by Eaton - Electronics Division as part of the PC-Tron® series. This component is classified as obsolete, with 1010 pieces currently in stock. The part features through-hole radial mounting in a box package configuration, suitable for applications requiring fast-acting overcurrent protection in low-voltage circuits.

Due to the obsolete product status of BK/PCB-1, equivalent substitute parts from the active PC-Tron® product line are available to ensure design continuity and supply chain reliability. All substitute parts maintain identical electrical and mechanical specifications, enabling direct replacement in existing designs.

Key Parameters

Parameter	Value
Current Rating	1 A
Voltage Rating - AC	250 V
Voltage Rating - DC	450 V
Response Time	Fast Blow
Mounting Type	Through Hole
Fuse Type	Board Mount (Cartridge Style Excluded)
Package / Case	Radial, Box
Breaking Capacity @ Rated Voltage	50 A AC, 5.9 kA DC
Melting I²t	0.02
Size / Dimension	0.350" L x 0.184" W x 0.345" H (8.89 mm x 4.67 mm x 8.76 mm)
Approval Agency	CSA, UL
Series	PC-Tron®

Substitute Part Grouping Explanation

Substitution of BK/PCB-1 with equivalent parts is based on strict electrical and mechanical parameter matching. All substitute parts maintain the following critical specifications:

Current Rating: 1 A (identical across all substitutes)
Voltage Ratings: 250 V AC and 450 V DC (identical across all substitutes)
Response Time: Fast Blow (identical across all substitutes)
Breaking Capacity: 50 A AC, 5.9 kA DC (identical across all substitutes)
Melting I²t: 0.02 (identical across all substitutes)
Mounting Configuration: Through Hole, Radial, Box package (identical across all substitutes)
Physical Dimensions: 0.350" L x 0.184" W x 0.345" H (identical across all substitutes)
Approval Agencies: CSA, UL (identical across all substitutes)

All substitute parts are manufactured by Eaton - Electronics Division within the PC-Tron® series. The primary distinction between BK/PCB-1 and its substitutes is product status and RoHS compliance. BK/PCB-1 is obsolete and RoHS non-compliant, while all substitute parts are active and ROHS3 compliant.

Parameter Comparison

Part Number	Manufacturer	Product Status	Current Rating (A)	Voltage AC (V)	Voltage DC (V)	Response Time	Breaking Capacity AC / DC	Melting I²t	Package	RoHS Status	Inventory (Pcs)
BK/PCB-1	Eaton - Electronics Division	Obsolete	1	250	450	Fast Blow	50 A / 5.9 kA	0.02	Radial, Box	RoHS non-compliant	1010
BK/PCB-1-R	Eaton - Electronics Division	Active	1	250	450	Fast Blow	50 A / 5.9 kA	0.02	Radial, Box	ROHS3 Compliant	4046
PCB-1-R	Eaton - Electronics Division	Active	1	250	450	Fast Blow	50 A / 5.9 kA	0.02	Radial, Box	ROHS3 Compliant	798
BK/PCC-1-R	Eaton - Electronics Division	Active	1	250	450	Fast Blow	50 A / 5.9 kA	0.02	Radial, Box	ROHS3 Compliant	6550
BK/PCF-1-R	Eaton - Electronics Division	Active	1	250	450	Fast Blow	50 A / 5.9 kA	0.02	Radial, Box	ROHS3 Compliant	1065
BK/PCH-1-R	Eaton - Electronics Division	Active	1	250	450	Fast Blow	50 A / 5.9 kA	0.02	Radial, Box	ROHS3 Compliant	803
PCC-1-R	Eaton - Electronics Division	Active	1	250	450	Fast Blow	50 A / 5.9 kA	0.02	Radial, Box	ROHS3 Compliant	767
PCF-1-R	Eaton - Electronics Division	Active	1	250	450	Fast Blow	50 A / 5.9 kA	0.02	Radial, Box	ROHS3 Compliant	686
PCH-1-R	Eaton - Electronics Division	Active	1	250	450	Fast Blow	50 A / 5.9 kA	0.02	Radial, Box	ROHS3 Compliant	888

Engineering Selection Recommendations

Primary Recommendation: BK/PCB-1-R

BK/PCB-1-R is the direct active equivalent of BK/PCB-1, maintaining the identical "BK/PCB" designation prefix while incorporating ROHS3 compliance. This part offers the highest inventory availability (4046 pieces) among active substitutes and represents the most direct replacement path for obsolete BK/PCB-1 designs.

Secondary Recommendations: BK/PCC-1-R, BK/PCF-1-R, BK/PCH-1-R

These parts maintain the "BK/" manufacturer prefix designation and are active products with ROHS3 compliance. All three parts are electrically and mechanically equivalent to BK/PCB-1. Selection among these options may be based on inventory availability and supply chain considerations.

Tertiary Recommendations: PCB-1-R, PCC-1-R, PCF-1-R, PCH-1-R

These parts omit the "BK/" prefix but retain full electrical and mechanical equivalence. All are active, ROHS3 compliant products suitable for direct substitution. These options provide additional supply chain flexibility.

All substitute parts carry CSA and UL approvals identical to the original BK/PCB-1, ensuring regulatory compliance in applications requiring certified components.

Frequently Asked Questions (FAQ)

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

A: Yes. BK/PCB-1-R is electrically and mechanically identical to BK/PCB-1. Both parts share identical current ratings (1 A), voltage ratings (250 V AC / 450 V DC), response time (Fast Blow), breaking capacity (50 A AC / 5.9 kA DC), melting I²t (0.02), physical dimensions (0.350" L x 0.184" W x 0.345" H), and mounting configuration (Through Hole, Radial, Box). The primary difference is that BK/PCB-1-R is an active product with ROHS3 compliance, while BK/PCB-1 is obsolete and RoHS non-compliant.

Q: What is the difference between BK/PCB-1-R and PCB-1-R?

A: Both parts are electrically and mechanically identical. The difference is the manufacturer designation prefix. BK/PCB-1-R includes the "BK/" prefix, while PCB-1-R does not. Both are active, ROHS3 compliant products manufactured by Eaton - Electronics Division within the PC-Tron® series. Selection between these parts may be based on inventory availability and internal part numbering conventions.

Q: Are all substitute parts approved by CSA and UL?

A: Yes. All substitute parts listed carry CSA and UL approvals, matching the certifications of the original BK/PCB-1. This ensures compliance with regulatory requirements in applications requiring certified fuse components.

Q: Can I mix different substitute part numbers in the same design?

A: Yes. All substitute parts are parametrically equivalent and interchangeable. They share identical electrical specifications, mechanical dimensions, mounting configuration, and approval certifications. However, for design consistency and supply chain management, using a single part number across a design is recommended.

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

A: The "-R" suffix indicates the active, current production version of the part with ROHS3 compliance. Parts without the "-R" suffix (such as the original BK/PCB-1) are obsolete or legacy products. The "-R" designation ensures access to compliant, actively manufactured components.

Q: Which substitute part has the highest inventory availability?

A: BK/PCB-1-R has the highest inventory availability with 4046 pieces in stock, followed by BK/PCC-1-R with 6550 pieces. Both parts are suitable for immediate procurement and long-term supply chain planning.

Q: Are there any differences in the radial, box package configuration among substitute parts?

A: No. All substitute parts use identical radial, box package configuration with dimensions of 0.350" L x 0.184" W x 0.345" H (8.89 mm x 4.67 mm x 8.76 mm). This ensures mechanical compatibility with existing PCB layouts and mounting hardware.

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