Equivalent & Substitute Parts for PCH-2-1/2-R

Part Overview

The PCH-2-1/2-R is a 2.5 A board mount fuse manufactured by Eaton - Electronics Division, rated for 250 V AC and 450 V DC operation. This fast-blow fuse is designed for through-hole radial mounting in a box package configuration and is part of the PC-Tron® series. The component holds Active product status with full CSA and UL approval certifications. Alternative equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design continuity across manufacturing environments.

Key Parameters

Parameter	Value
Current Rating	2.5 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	50A AC, 5.9kA DC
Melting I²t	0.3
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
RoHS Status	ROHS3 Compliant
Series	PC-Tron®

Substitute Part Grouping Explanation

Substitute parts for the PCH-2-1/2-R are classified into two categories based on electrical and mechanical parameter alignment:

Direct Equivalents (Parametric Match): Parts BK/PCH-2-1/2-R, BK/PCB-2-1/2-R, and BK/PCC-2-1/2-R are manufactured by Eaton - Electronics Division and share identical electrical specifications: 2.5 A current rating, 250 V AC / 450 V DC voltage ratings, fast-blow response, 50A AC / 5.9kA DC breaking capacity, and 0.3 melting I²t. All three maintain the same through-hole radial box package configuration with dimensions of 0.350" L x 0.184" W x 0.345" H. These parts are interchangeable at the functional level.

Similar Equivalents (Parametric Variation): Parts 80812500000 (Littelfuse Inc., TE5® 808 series) and 7100.1169.13 (SCHURTER Inc., FRT 250F series) match the core electrical parameters of 2.5 A current rating and 250 V AC voltage rating. However, these parts exhibit variations in secondary parameters:

80812500000 maintains 450 V DC rating and 0.0898 melting I²t with enhanced breaking capacity (100A AC, 10kA DC) and extended operating temperature range (-40°C ~ 125°C).
7100.1169.13 operates at 250 V DC (not 450 V DC) with 1.2 melting I²t and 63A breaking capacity, with operating temperature range of -40°C ~ 85°C.

Substitution between direct equivalents and similar equivalents requires verification of application-specific voltage and thermal requirements.

Parameter Comparison

Part Number	Manufacturer	Current Rating (A)	Voltage AC (V)	Voltage DC (V)	Response Time	Breaking Capacity AC	Breaking Capacity DC	Melting I²t	Package	Size (mm)	Approval
PCH-2-1/2-R	Eaton	2.5	250	450	Fast Blow	50A	5.9kA	0.3	Radial, Box	8.89 x 4.67 x 8.76	CSA, UL
BK/PCH-2-1/2-R	Eaton	2.5	250	450	Fast Blow	50A	5.9kA	0.3	Radial, Box	8.89 x 4.67 x 8.76	CSA, UL
BK/PCB-2-1/2-R	Eaton	2.5	250	450	Fast Blow	50A	5.9kA	0.3	Radial, Box	8.89 x 4.67 x 8.76	CSA, UL
BK/PCC-2-1/2-R	Eaton	2.5	250	450	Fast Blow	50A	5.9kA	0.3	Radial, Box	8.89 x 4.67 x 8.76	CSA, UL
PCB-2-1/2-R	Eaton	2.5	250	450	Fast Blow	50A	5.9kA	0.3	Radial, Box	8.89 x 4.67 x 8.76	CSA, UL
80812500000	Littelfuse	2.5	250	450	Fast Blow	100A	10kA	0.0898	Radial, Box	8.90 x 4.65 x 8.90	cULus
7100.1169.13	SCHURTER	2.5	250	250	Fast Blow	63A	N/A	1.2	Radial, Box	11.50 x 5.00 x 8.00	cURus

Engineering Selection Recommendations

Direct Substitution (Eaton PC-Tron® Series): Parts BK/PCH-2-1/2-R, BK/PCB-2-1/2-R, BK/PCC-2-1/2-R, and PCB-2-1/2-R are functionally equivalent to PCH-2-1/2-R and support direct substitution without design modification. All parts maintain Active product status, ROHS3 compliance, and CSA/UL certifications. Selection among these parts may be based on inventory availability and packaging requirements (Bulk packaging for all variants).

Cross-Manufacturer Substitution (Littelfuse TE5® 808): Part 80812500000 provides equivalent electrical performance with enhanced breaking capacity specifications (100A AC, 10kA DC versus 50A AC, 5.9kA DC). This part maintains identical voltage ratings (250 V AC, 450 V DC), current rating (2.5 A), and fast-blow response. The lower melting I²t value (0.0898 versus 0.3) indicates faster thermal response. Extended operating temperature range (-40°C ~ 125°C) supports broader environmental applications. Dimensional tolerance is within acceptable mounting clearance (8.90mm x 4.65mm x 8.90mm versus 8.89mm x 4.67mm x 8.76mm). cULus certification provides equivalent regulatory compliance.

Limited Substitution (SCHURTER FRT 250F): Part 7100.1169.13 is suitable only for applications where DC voltage does not exceed 250 V. The reduced DC voltage rating (250 V versus 450 V) and larger physical dimensions (11.50mm x 5.00mm x 8.00mm) restrict its use to specific circuit configurations. The higher melting I²t (1.2 versus 0.3) results in slower thermal response. This part is not recommended as a primary substitute for 450 V DC applications.

Frequently Asked Questions (FAQ)

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

A: Yes. BK/PCH-2-1/2-R is manufactured by Eaton - Electronics Division and shares identical electrical specifications, mechanical dimensions, and certifications with PCH-2-1/2-R. Both parts are rated for 2.5 A, 250 V AC / 450 V DC operation with fast-blow response and 50A AC / 5.9kA DC breaking capacity. Direct substitution is supported without circuit modification.

Q: What is the difference between the Eaton variants (BK/PCH-2-1/2-R, BK/PCB-2-1/2-R, BK/PCC-2-1/2-R, PCB-2-1/2-R)?

A: All four Eaton variants maintain identical electrical and mechanical specifications. Differences exist only in part number designation and internal manufacturing codes. Selection among these parts is based on inventory availability and procurement requirements. All variants are functionally interchangeable.

Q: Can 80812500000 (Littelfuse) replace PCH-2-1/2-R?

A: Yes, with verification of application requirements. The Littelfuse TE5® 808 part 80812500000 maintains the same current rating (2.5 A), voltage ratings (250 V AC / 450 V DC), and response time (fast-blow). However, it features enhanced breaking capacity (100A AC / 10kA DC versus 50A AC / 5.9kA DC) and lower melting I²t (0.0898 versus 0.3). Physical dimensions are within acceptable tolerance. Substitution is appropriate for applications requiring higher fault current handling or faster thermal response.

Q: Why is 7100.1169.13 (SCHURTER) listed as a similar equivalent rather than a direct substitute?

A: Part 7100.1169.13 has a reduced DC voltage rating of 250 V compared to the 450 V DC rating of PCH-2-1/2-R. This limitation restricts its use to circuits where DC voltage does not exceed 250 V. Additionally, the larger physical dimensions (11.50mm x 5.00mm x 8.00mm) may require PCB layout verification. The higher melting I²t (1.2 versus 0.3) indicates slower thermal response. Substitution is conditional on application-specific voltage and thermal requirements.

Q: What packaging formats are available for these parts?

A: Eaton parts (PCH-2-1/2-R, BK/PCH-2-1/2-R, BK/PCB-2-1/2-R, BK/PCC-2-1/2-R, PCB-2-1/2-R) are supplied in Bulk packaging. Littelfuse part 80812500000 is supplied in Cut Tape (CT) packaging. SCHURTER part 7100.1169.13 is supplied in Bulk packaging. Packaging selection depends on assembly process requirements and inventory management practices.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed parts (PCH-2-1/2-R, BK/PCH-2-1/2-R, BK/PCB-2-1/2-R, BK/PCC-2-1/2-R, PCB-2-1/2-R, 80812500000, and 7100.1169.13) maintain ROHS3 compliance status. All parts are suitable for applications requiring RoHS compliance.

Q: What certifications apply to each substitute part?

A: Eaton parts carry CSA and UL certifications. Littelfuse part 80812500000 carries cULus certification. SCHURTER part 7100.1169.13 carries cURus certification. All certifications provide equivalent regulatory recognition for North American and international markets.

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