Equivalent & Substitute Parts for BK/S501-80-R

Part Overview

The BK/S501-80-R is an 80 mA ceramic fuse cartridge rated for 250 V AC/DC operation in a 5mm x 20mm package form factor. This fast-blow fuse cartridge requires a compatible holder for installation and is manufactured by Eaton - Electronics Division. The part maintains active product status with 901 units in current inventory. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when design flexibility permits cross-manufacturer selection.

Substiute Parts

BK/S501-80-R

Eaton - Electronics DivisionIn Stock: 954BK/S501-80-R Datasheet

Current PartRFQ

BK1/S501-80-R

Eaton - Electronics DivisionIn Stock: 1117BK1/S501-80-R Datasheet

Parametric EquivalentRFQ

0216.080HXP

Littelfuse Inc.In Stock: 8440216.080HXP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BK/S501-80-R is determined by strict equivalence across the following critical parameters:

Primary Equivalence Criteria:

• Current Rating: 80 mA (exact match required)
• Voltage Rating (AC): 250 V (exact match required)
• Package / Case: 5mm x 20mm (exact match required)
• Fuse Type: Cartridge, Ceramic (exact match required)
• Response Time: Fast Blow (exact match required)
• Breaking Capacity @ Rated Voltage: 1.5 kA (exact match required)

Secondary Compatibility Factors:

• Mounting Type: Requires Holder (compatible with same holder systems)
• Regulatory Compliance: CSA, cULus, or equivalent certifications

All identified substitute parts meet these criteria and are therefore electrically and mechanically interchangeable with the main part in applications requiring an 80 mA ceramic fuse cartridge in 5x20mm form factor.

Parameter Comparison

Engineering Selection Recommendations

BK1/S501-80-R (Eaton - Electronics Division): This part is a parametric equivalent manufactured by the same supplier as the main part. All electrical and mechanical specifications are identical. Both parts carry CSA and cULus certifications and maintain active product status. Selection of this substitute provides continuity with Eaton's S501 series platform while offering increased inventory availability (1078 units versus 901 units).

0216.080HXP (Littelfuse Inc.): This part meets all critical electrical and mechanical substitution criteria and is certified by CSA along with additional regulatory bodies (CCC, CE, SEMKO, UR, VDE). The part carries ROHS3 compliance and REACH Unaffected status. This substitute enables cross-manufacturer sourcing and provides access to Littelfuse's 216 series ceramic fuse cartridge platform. Inventory availability is 775 units.

Both substitute parts are suitable for direct replacement in applications currently specified for the BK/S501-80-R fuse cartridge.

Frequently Asked Questions (FAQ)

Q: Can BK1/S501-80-R be used as a direct replacement for BK/S501-80-R?

A: Yes. Both parts are manufactured by Eaton - Electronics Division and share identical electrical ratings (80 mA, 250 V AC), fuse type (ceramic cartridge), response time (fast blow), package dimensions (5mm x 20mm), and breaking capacity (1.5 kA). Both carry CSA and cULus certifications and maintain active product status.

Q: Can 0216.080HXP from Littelfuse be used as a direct replacement?

A: Yes. The 0216.080HXP meets all critical electrical and mechanical parameters: 80 mA current rating, 250 V AC voltage rating, ceramic cartridge fuse type, fast-blow response, 5mm x 20mm package, and 1.5 kA breaking capacity. CSA certification is common to both the original part and this substitute. The Littelfuse part carries additional certifications (CCC, CE, SEMKO, UR, VDE).

Q: Are there any differences in holder compatibility?

A: All three parts require a compatible fuse holder and share identical 5mm x 20mm package dimensions. Holders designed for 5x20mm ceramic fuse cartridges are compatible with all three parts.

Q: What is the difference in DC Cold Resistance between these parts?

A: The BK/S501-80-R and BK1/S501-80-R both measure 27.9 Ohms DC cold resistance. The 0216.080HXP measures 7.885 Ohms. This parameter difference does not affect substitution eligibility, as DC cold resistance is not a critical selection criterion for fuse cartridge interchangeability in standard circuit protection applications.

Q: Do all parts have the same melting I²t value?

A: The BK/S501-80-R and BK1/S501-80-R both specify 0.0011 melting I²t. The 0216.080HXP specifies 0.00084 melting I²t. Both values fall within acceptable ranges for 80 mA fast-blow ceramic fuse cartridges and do not preclude substitution.

Q: What certifications apply to each part?

A: BK/S501-80-R and BK1/S501-80-R carry CSA and cULus certifications. The 0216.080HXP carries CCC, CE, CSA, SEMKO, UR, and VDE certifications. All parts meet the regulatory requirements for ceramic fuse cartridges in their respective markets.