Equivalent & Substitute Parts for BK/PCB-1/2

Part Overview

The BK/PCB-1/2 is a 500 mA board mount fuse rated for 250 V AC and 450 V DC operation, manufactured by Eaton - Electronics Division under the PC-Tron® series. This component is classified as obsolete, with 870 pieces currently in stock. Due to its obsolete status, equivalent substitute parts from the same manufacturer are available to ensure design continuity and supply chain reliability. The substitute parts maintain identical electrical and mechanical specifications while offering active product status and improved compliance characteristics.

Key Parameters

Parameter	Specification
Current Rating	500 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
Breaking Capacity @ Rated Voltage	50A AC, 5.9kA DC
Melting I²t	0.006
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
Series	PC-Tron®

Substitute Part Grouping Explanation

Substitution eligibility for the BK/PCB-1/2 is determined by strict parametric equivalence across all electrical and mechanical characteristics. All substitute parts listed maintain identical specifications for current rating (500 mA), voltage ratings (250 V AC / 450 V DC), response time (Fast Blow), fuse type (Board Mount), mounting configuration (Through Hole), package style (Radial, Box), breaking capacity (50A AC, 5.9kA DC), melting I²t value (0.006), physical dimensions (0.350" L x 0.184" W x 0.345" H), and regulatory approvals (CSA, UL).

The substitute parts are grouped into two categories:

Direct Manufacturer Equivalent: BK/PCB-1/2-R represents the direct equivalent with identical part designation and bulk packaging, offering active product status.

Parametric Equivalents: BK/PCC-1/2-R, BK/PCF-1/2-R, BK/PCH-1/2-R, PCB-1/2-R, PCC-1/2-R, and PCF-1/2-R are parametric equivalents within the PC-Tron® series. These parts share all critical electrical and mechanical parameters but differ in internal design or manufacturing process designation. All maintain active product status and bulk packaging.

Parameter Comparison

Part Number	Manufacturer	Product Status	Current Rating	Voltage AC	Voltage DC	Response Time	Breaking Capacity AC	Breaking Capacity DC	Melting I²t	RoHS Status	Inventory (Pcs)
BK/PCB-1/2	Eaton - Electronics Division	Obsolete	500 mA	250 V	450 V	Fast Blow	50A	5.9kA	0.006	RoHS non-compliant	870
BK/PCB-1/2-R	Eaton - Electronics Division	Active	500 mA	250 V	450 V	Fast Blow	50A	5.9kA	0.006	ROHS3 Compliant	3783
BK/PCC-1/2-R	Eaton - Electronics Division	Active	500 mA	250 V	450 V	Fast Blow	50A	5.9kA	0.006	ROHS3 Compliant	3680
BK/PCF-1/2-R	Eaton - Electronics Division	Active	500 mA	250 V	450 V	Fast Blow	50A	5.9kA	0.006	ROHS3 Compliant	890
BK/PCH-1/2-R	Eaton - Electronics Division	Active	500 mA	250 V	450 V	Fast Blow	50A	5.9kA	0.006	ROHS3 Compliant	1110
PCB-1/2-R	Eaton - Electronics Division	Active	500 mA	250 V	450 V	Fast Blow	50A	5.9kA	0.006	ROHS3 Compliant	1081
PCC-1/2-R	Eaton - Electronics Division	Active	500 mA	250 V	450 V	Fast Blow	50A	5.9kA	0.006	ROHS3 Compliant	782
PCF-1/2-R	Eaton - Electronics Division	Active	500 mA	250 V	450 V	Fast Blow	50A	5.9kA	0.006	ROHS3 Compliant	775
PCH-1/2-R	Eaton - Electronics Division	Active	500 mA	250 V	450 V	Fast Blow	50A	5.9kA	0.006	ROHS3 Compliant	848

Engineering Selection Recommendations

Primary Selection: BK/PCB-1/2-R is the recommended substitute for the obsolete BK/PCB-1/2. This part maintains the direct manufacturer designation while offering active product status, ROHS3 compliance, and the highest inventory availability (3783 pieces). The "-R" suffix indicates the current production variant with improved regulatory compliance.

Secondary Selections: BK/PCC-1/2-R and BK/PCH-1/2-R are parametric equivalents within the PC-Tron® series, both with active status and ROHS3 compliance. These parts are suitable for applications where the specific internal design variant is not critical to circuit performance, provided all electrical and mechanical parameters remain within specification.

Tertiary Selections: PCB-1/2-R, PCC-1/2-R, PCF-1/2-R, and PCH-1/2-R are parametric equivalents without the "BK/" prefix designation. These parts maintain identical electrical specifications and regulatory approvals but represent alternative design variants. Selection should be based on availability and internal design requirements specific to the application.

All substitute parts carry CSA and UL approvals, matching the regulatory certifications of the original BK/PCB-1/2. All active substitutes are ROHS3 compliant, addressing environmental compliance requirements not met by the obsolete original part.

Frequently Asked Questions (FAQ)

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

A: Yes. BK/PCB-1/2-R is the direct equivalent with identical electrical ratings (500 mA, 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 Box package). The primary difference is product status (Active vs. Obsolete) and RoHS compliance (ROHS3 vs. non-compliant).

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

A: All parts share identical electrical and mechanical specifications. The letter designation (B, C, F, H) indicates different internal design variants or manufacturing process designations within the PC-Tron® series. From a circuit performance perspective, they are functionally equivalent. Selection should be based on availability and any design-specific requirements documented in the original circuit design.

Q: Are the parts without the "BK/" prefix (PCB-1/2-R, PCC-1/2-R, etc.) suitable substitutes?

A: Yes, these parts maintain all critical electrical and mechanical parameters identical to BK/PCB-1/2. The prefix difference reflects manufacturing or distribution designation variants. All carry the same CSA and UL approvals and ROHS3 compliance. Compatibility depends on whether the circuit design specifies the full part number including prefix or only the core designation.

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

A: The "-R" suffix indicates the current production revision of these parts, incorporating ROHS3 compliance and active product status. This distinguishes them from the obsolete BK/PCB-1/2 (without "-R" suffix), which is RoHS non-compliant.

Q: Can I mix different parametric equivalents in the same circuit board?

A: Yes. All substitute parts maintain identical electrical specifications (current rating, voltage ratings, response time, breaking capacity, melting I²t) and physical dimensions. They are mechanically and electrically interchangeable within the same circuit design.

Q: Which substitute part should I select for new designs?

A: BK/PCB-1/2-R is the recommended choice for new designs, offering the highest inventory availability (3783 pieces), direct manufacturer designation continuity, and active product status with ROHS3 compliance.

Q: Are all substitute parts rated for the same breaking capacity?

A: Yes. All substitute parts are rated for 50A AC and 5.9kA DC breaking capacity at rated voltage, matching the original BK/PCB-1/2 specification.

Q: What is the melting I²t value, and is it identical across all parts?

A: Melting I²t (0.006) represents the thermal energy required to melt the fuse element. This value is identical across all listed parts, ensuring consistent thermal response characteristics and protection performance.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message