Equivalent & Substitute Parts for BK/PCB-2

Part Overview

The BK/PCB-2 is a 2 A, 250 V AC / 450 V DC board mount radial fuse manufactured by Eaton - Electronics Division as part of the PC-Tron® series. This component is classified as obsolete, with 1,034 units currently in stock. The fuse features fast blow response characteristics and is approved by CSA and UL agencies.

Due to the obsolete product status of BK/PCB-2, equivalent substitute parts are necessary for ongoing design support, procurement continuity, and new production requirements. Active alternatives from both Eaton and third-party manufacturers provide identical electrical and mechanical performance with improved compliance certifications and extended availability.

Key Parameters

Parameter	Value
Current Rating	2 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
Size / Dimension	0.350" L x 0.184" W x 0.345" H (8.89mm x 4.67mm x 8.76mm)
Approval Agency	CSA, UL

Substitute Part Grouping Explanation

Substitution eligibility for the BK/PCB-2 is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

Current Rating: 2 A (exact match required)
Voltage Rating - AC: 250 V (exact match required)
Voltage Rating - DC: 450 V (exact match required)
Response Time: Fast Blow (exact match required)

Mechanical Parameters:

Mounting Type: Through Hole (exact match required)
Fuse Type: Board Mount (Cartridge Style Excluded) (exact match required)
Package / Case: Radial, Box (exact match required)
Physical Dimensions: 0.350" L x 0.184" W x 0.345" H (exact match required)

All substitute parts listed below meet these criteria and are therefore direct functional equivalents suitable for replacement in applications originally designed for the BK/PCB-2.

Parameter Comparison

Part Number	Manufacturer	Series	Current Rating (A)	Voltage AC (V)	Voltage DC (V)	Response Time	Breaking Capacity AC	Breaking Capacity DC	Melting I²t	Product Status	RoHS Status	Inventory (Pcs)
BK/PCB-2	Eaton - Electronics Division	PC-Tron®	2	250	450	Fast Blow	50A	5.9kA	0.2	Obsolete	RoHS non-compliant	1034
BK/PCB-2-R	Eaton - Electronics Division	PC-Tron®	2	250	450	Fast Blow	50A	5.9kA	0.2	Active	ROHS3 Compliant	2481
PCB-2-R	Eaton - Electronics Division	PC-Tron®	2	250	450	Fast Blow	50A	5.9kA	0.2	Active	ROHS3 Compliant	810
BK/PCC-2-R	Eaton - Electronics Division	PC-Tron®	2	250	450	Fast Blow	50A	5.9kA	0.2	Active	ROHS3 Compliant	6446
BK/PCF-2-R	Eaton - Electronics Division	PC-Tron®	2	250	450	Fast Blow	50A	5.9kA	0.2	Active	ROHS3 Compliant	966
BK/PCH-2-R	Eaton - Electronics Division	PC-Tron®	2	250	450	Fast Blow	50A	5.9kA	0.2	Active	ROHS3 Compliant	921
PCC-2-R	Eaton - Electronics Division	PC-Tron®	2	250	450	Fast Blow	50A	5.9kA	0.2	Active	ROHS3 Compliant	965
PCF-2-R	Eaton - Electronics Division	PC-Tron®	2	250	450	Fast Blow	50A	5.9kA	0.2	Active	ROHS3 Compliant	1020
PCH-2-R	Eaton - Electronics Division	PC-Tron®	2	250	450	Fast Blow	50A	5.9kA	0.2	Active	ROHS3 Compliant	1165
80812000075	Littelfuse Inc.	TE5® 808	2	250	450	Fast Blow	100A	10kA	0.061	Active	ROHS3 Compliant	965
80812000440	Littelfuse Inc.	TE5® 808	2	250	450	Fast Blow	100A	10kA	0.061	Active	ROHS3 Compliant	1844

Engineering Selection Recommendations

Eaton PC-Tron® Series Substitutes (BK/PCB-2-R, PCB-2-R, BK/PCC-2-R, BK/PCF-2-R, BK/PCH-2-R, PCC-2-R, PCF-2-R, PCH-2-R):

These parts are direct replacements from the same manufacturer and series as the original BK/PCB-2. All Eaton substitutes are active products with ROHS3 compliance, providing improved environmental compliance over the obsolete original part. These options are preferred for applications requiring continuity within the PC-Tron® product line. Inventory availability ranges from 810 to 6,446 units across the Eaton alternatives.

Littelfuse TE5® 808 Series Substitutes (80812000075, 80812000440):

These parts are manufactured by Littelfuse Inc. and meet all critical electrical and mechanical parameters of the BK/PCB-2. The Littelfuse alternatives feature enhanced breaking capacity specifications (100A AC / 10kA DC versus 50A AC / 5.9kA DC) and lower melting I²t values (0.061 versus 0.2), indicating faster response characteristics. Both parts are active products with ROHS3 compliance and cULus approval. These substitutes are suitable for applications where enhanced breaking capacity and faster response are beneficial or where Littelfuse supply chain integration is preferred.

All listed substitutes carry appropriate regulatory approvals (CSA, UL, or cULus) and are suitable for direct replacement in through-hole board mount applications requiring 2 A, 250 V AC / 450 V DC fast blow fuse protection.

Frequently Asked Questions (FAQ)

Q: Can BK/PCB-2 be directly replaced with any of the listed substitutes?

A: Yes. All listed substitute parts meet the critical electrical parameters (2 A, 250 V AC, 450 V DC, Fast Blow response) and mechanical specifications (Through Hole, Board Mount, Radial Box package, 0.350" L x 0.184" W x 0.345" H dimensions) required for direct replacement in applications originally designed for BK/PCB-2.

Q: What is the difference between Eaton and Littelfuse substitutes?

A: Both manufacturers provide functionally equivalent parts meeting the core electrical and mechanical requirements. Littelfuse parts (80812000075, 80812000440) feature higher breaking capacity ratings (100A AC / 10kA DC) and lower melting I²t values (0.061) compared to Eaton parts (50A AC / 5.9kA DC, melting I²t 0.2). Selection depends on supply chain preference and whether enhanced breaking capacity is required for the application.

Q: Are all substitutes RoHS compliant?

A: Yes. All active substitute parts listed are ROHS3 compliant. The original BK/PCB-2 is RoHS non-compliant, making the substitutes preferable for new designs and applications subject to RoHS requirements.

Q: What is the difference between BK/PCB-2-R and PCB-2-R?

A: Both parts are from Eaton's PC-Tron® series and are electrically and mechanically identical. The designation difference reflects internal Eaton part numbering conventions. Both are active products suitable for replacement applications.

Q: Can I use Littelfuse 80812000075 or 80812000440 in place of Eaton parts?

A: Yes. Both Littelfuse parts meet all critical electrical and mechanical parameters. The enhanced breaking capacity and faster response characteristics of Littelfuse parts make them suitable substitutes. Verify that the application does not have specific manufacturer requirements before substitution.

Q: What inventory levels are available for each substitute?

A: Inventory availability varies: BK/PCC-2-R (6,446 units), BK/PCB-2-R (2,481 units), 80812000440 (1,844 units), PCH-2-R (1,165 units), PCF-2-R (1,020 units), 80812000075 (965 units), PCC-2-R (965 units), BK/PCF-2-R (966 units), and PCB-2-R (810 units). Consult current inventory systems for real-time availability.

Q: Are the physical dimensions identical across all substitutes?

A: Eaton substitutes maintain the original dimension specification of 0.350" L x 0.184" W x 0.345" H (8.89mm x 4.67mm x 8.76mm). Littelfuse parts have dimensions of 0.350" L x 0.183" W x 0.350" H (8.90mm x 4.65mm x 8.90mm), representing negligible variations within standard manufacturing tolerances that do not affect board mount compatibility.

Q: What regulatory approvals do the substitutes carry?

A: Eaton substitutes carry CSA and UL approvals. Littelfuse substitutes carry cULus approval. All approvals are appropriate for the specified voltage and current ratings.

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