BK/S505SC-1.6-R Equivalent & Substitute Parts

Part Overview

The BK/S505SC-1.6-R is a 1.6 A, 250 V AC/DC ceramic cartridge fuse manufactured by Eaton - Electronics Division. This slow-blow fuse is designed for through-hole mounting in a 5mm x 20mm (axial) package format. The part is currently active in production with 799 pieces in stock. Equivalent and substitute parts are identified to provide design flexibility, support supply chain continuity, and accommodate component availability across different procurement channels.

Substiute Parts

BK/S505SC-1.6-R

Eaton - Electronics DivisionIn Stock: 846BK/S505SC-1.6-R Datasheet

Current PartRFQ

0659P1600-13

Bel Fuse Inc.In Stock: 18250659P1600-13 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BK/S505SC-1.6-R is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Current Rating: 1.6 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
• Physical Dimensions: 0.205" Dia x 0.787" L (5.20mm x 20.00mm)

The substitute part 0659P1600-13 manufactured by Bel Fuse Inc. meets all mandatory matching parameters and is therefore classified as a parametric equivalent. Both parts are RoHS3 compliant and share identical electrical and mechanical specifications within the allowed tolerances for this product category.

Parameter Comparison

Engineering Selection Recommendations

Both the BK/S505SC-1.6-R and 0659P1600-13 are active production parts with full RoHS3 compliance. Selection between these parts is based on the following factors:

Eaton BK/S505SC-1.6-R:

• Approved by BSI, CCC/CQC, CSA, cURus, IMQ, KC, PSE/JET, SEMKO, and VDE
• Melting I²t: 7.35
• DC Cold Resistance: 0.07 Ohms
• Current inventory: 799 pieces

Bel Fuse Inc. 0659P1600-13:

• Approved by CQC, cURus, PSE, and VDE
• Melting I²t: 5.4
• DC Cold Resistance: 0.076 Ohms
• Operating Temperature Range: -55°C ~ 125°C
• Current inventory: 1748 pieces
• REACH Unaffected status

Both parts satisfy identical electrical and mechanical requirements. The choice between manufacturers is determined by design certification requirements, supply availability, and specific approval agency mandates applicable to the end application.

Frequently Asked Questions (FAQ)

Q: Can the 0659P1600-13 be used as a direct replacement for the BK/S505SC-1.6-R?

A: Yes. Both parts are parametric equivalents with identical current rating (1.6 A), voltage rating (250 V AC), fuse type (ceramic cartridge), response time (slow blow), package dimensions (5mm x 20mm axial), and breaking capacity (1.5 kA). Physical and electrical compatibility is confirmed.

Q: What are the differences between these two parts?

A: The primary differences are manufacturer-specific: Melting I²t (7.35 vs. 5.4), DC Cold Resistance (0.07 vs. 0.076 Ohms), and approval agency certifications. The Bel Fuse part includes an operating temperature range specification (-55°C ~ 125°C) and REACH Unaffected status. Both are RoHS3 compliant.

Q: Are the physical dimensions identical?

A: Yes. Both parts are 0.205" diameter x 0.787" length (5.20mm x 20.00mm) and mount identically in through-hole applications.

Q: Which certifications apply to each part?

A: The Eaton BK/S505SC-1.6-R carries approvals from BSI, CCC/CQC, CSA, cURus, IMQ, KC, PSE/JET, SEMKO, and VDE. The Bel Fuse 0659P1600-13 carries approvals from CQC, cURus, PSE, and VDE. Verify that the required certifications for your application are present on the selected part.

Q: What is the significance of the Melting I²t difference?

A: Melting I²t is a thermal characteristic that defines the energy required to melt the fuse element. The Eaton part (7.35) and Bel Fuse part (5.4) have different values. Both are rated for the same current and voltage, but this parameter may be relevant for specific circuit protection calculations in high-energy transient environments.

Q: Can these parts be used interchangeably in all applications?

A: Interchangeability is confirmed for applications requiring 1.6 A, 250 V AC/DC ceramic cartridge fuses with slow-blow response in 5mm x 20mm through-hole packages. Verify that all required approval certifications for your specific application are present on the selected part before implementation.