Equivalent & Substitute Parts for BK-S505SC-1-R

Part Overview

The BK-S505SC-1-R is a ceramic cartridge fuse manufactured by Eaton - Electronics Division, rated for 1 A at 250 V AC/DC with slow-blow response characteristics. This through-hole component is designed for circuit protection in industrial and commercial applications requiring reliable overcurrent interruption. The part is currently active in production with 1115 units in stock inventory. Alternative equivalent parts may be required due to supply chain considerations, regional availability, or specific application compliance requirements while maintaining identical electrical and mechanical performance parameters.

Substiute Parts

BK-S505SC-1-R

Eaton - Electronics DivisionIn Stock: 1213BK-S505SC-1-R Datasheet

Current PartRFQ

BK/S505SC-1-R

Eaton - Electronics DivisionIn Stock: 1083BK/S505SC-1-R Datasheet

Parametric EquivalentRFQ

0215001.MXESPP

Littelfuse Inc.In Stock: 219590215001.MXESPP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BK-S505SC-1-R is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Current Rating: 1 A
• Voltage Rating (AC): 250 V
• Fuse Type: Cartridge, Ceramic
• Response Time: Slow Blow
• Package / Case: 5mm x 20mm (Axial)
• Mounting Type: Through Hole
• Breaking Capacity @ Rated Voltage: 1.5 kA

All identified substitute parts meet these requirements without exception. Variations in secondary parameters such as melting I²t, DC cold resistance, and operating temperature range do not disqualify substitution when primary electrical and mechanical specifications remain identical.

Parameter Comparison

Engineering Selection Recommendations

BK/S505SC-1-R (Eaton - Electronics Division): This part is a direct equivalent manufactured by the same supplier as the primary part. It maintains identical electrical specifications and mechanical form factor. The part carries Active product status with ROHS3 compliance certification. Selection of this substitute is appropriate when maintaining single-source supplier continuity is a design requirement, with inventory availability of 1041 units supporting production needs.

0215001.MXESPP (Littelfuse Inc.): This substitute from Littelfuse Inc. meets all mandatory electrical and mechanical parameters with identical current rating, voltage rating, fuse type, response time, package dimensions, and breaking capacity. The part is rated for operating temperature range of -55°C to 125°C and carries ROHS3 compliance with certifications including CE, CQC, CSA, KC, PSE, UR, and VDE. Significantly higher inventory availability of 21850 units supports extended production schedules and supply chain resilience. Selection of this substitute is appropriate when multi-source supplier strategy or enhanced inventory buffer is required.

Frequently Asked Questions (FAQ)

Q: Can BK/S505SC-1-R be used as a direct replacement for BK-S505SC-1-R? A: Yes. Both parts are manufactured by Eaton - Electronics Division and share identical electrical ratings (1 A, 250 V AC), fuse type (Ceramic Cartridge), response time (Slow Blow), and mechanical package (5mm x 20mm through-hole). The parts are functionally interchangeable in circuit protection applications.

Q: What are the differences between the Eaton and Littelfuse substitutes? A: The primary differences are manufacturer identity and secondary performance parameters. The Littelfuse 0215001.MXESPP maintains identical core electrical specifications but features a specified operating temperature range (-55°C to 125°C) and different melting I²t (1.52 versus 1.28 for the primary part) and DC cold resistance (0.1515 Ohms versus 0.1401 Ohms). All three parts meet the 1.5 kA breaking capacity requirement.

Q: Are there any compliance or certification differences? A: All three parts carry RoHS compliance. The primary BK-S505SC-1-R lists BSI, CCC/CQC, CSA, cURus, IMQ, KC, PSE/JET, SEMKO, and VDE approvals. The Littelfuse substitute carries CE, CQC, CSA, KC, PSE, UR, and VDE certifications. Both sets of certifications support industrial and commercial circuit protection applications.

Q: Can these parts be mixed in the same circuit board assembly? A: Yes. All three parts are mechanically and electrically equivalent for the specified 1 A, 250 V AC/DC slow-blow ceramic cartridge fuse application. They share identical 5mm x 20mm through-hole package dimensions and breaking capacity ratings.

Q: Which substitute should be selected for high-temperature applications? A: The Littelfuse 0215001.MXESPP specifies an operating temperature range of -55°C to 125°C. If operating temperature range specification is a design requirement, this part is the appropriate selection among the available substitutes.

Q: What inventory considerations apply to these substitutes? A: The primary part BK-S505SC-1-R has 1115 units in stock. The Eaton equivalent BK/S505SC-1-R has 1041 units available. The Littelfuse substitute 0215001.MXESPP has significantly higher inventory of 21850 units, supporting extended production runs and supply chain continuity planning.