S506-32-R Glass Cartridge Fuse 32mA 250VAC 5x20mm Equivalent & Substitute Parts

Part Overview

The S506-32-R is a 32 mA, 250 V AC/DC slow blow glass cartridge fuse manufactured by Eaton - Electronics Division. This fuse is designed for applications requiring circuit protection in the 32 mA current range with a 5mm x 20mm form factor. The part is Active status and requires a compatible fuse holder for installation. Equivalent and substitute parts are identified based on matching electrical characteristics, mechanical dimensions, and regulatory compliance certifications to ensure direct functional interchangeability in circuit protection applications.

Substiute Parts

S506-32-R

Eaton - Electronics DivisionIn Stock: 965S506-32-R Datasheet

Current PartRFQ

BK/S506-32-R

Eaton - Electronics DivisionIn Stock: 1894BK/S506-32-R Datasheet

DirectRFQ

BK1/S506-32-R

Eaton - Electronics DivisionIn Stock: 1522BK1/S506-32-R Datasheet

Parametric EquivalentRFQ

GDC-32MA

Eaton - Electronics DivisionIn Stock: 799GDC-32MA Datasheet

Parametric EquivalentRFQ

0218.032MXP

Littelfuse Inc.In Stock: 16590218.032MXP Datasheet

DirectRFQ

0218.032TXP

Littelfuse Inc.In Stock: 12830218.032TXP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the S506-32-R are grouped based on strict equivalence of the following critical parameters: current rating (32 mA), voltage rating (250 V AC), fuse type (cartridge glass), response time (slow blow), package dimensions (5mm x 20mm), and breaking capacity (35A). All identified substitutes maintain these electrical and mechanical specifications, ensuring functional interchangeability within the same circuit protection application.

The substitute parts are categorized as follows:

Eaton - Electronics Division Series S506 and GDC variants: BK/S506-32-R, BK1/S506-32-R, and GDC-32MA are direct Eaton equivalents with identical electrical parameters and mechanical form factor.

Littelfuse Inc. Series 218 variants: 0218.032MXP and 0218.032TXP are parametric equivalents from an alternative manufacturer with matching electrical specifications and package dimensions.

Parameter Comparison

Engineering Selection Recommendations

Eaton S506 Series (S506-32-R, BK/S506-32-R, BK1/S506-32-R): These parts are direct equivalents with identical electrical parameters, melting I²t values, and DC cold resistance. All three variants are Active status and ROHS3 compliant. Selection among these three is based on inventory availability and packaging designation (BK and BK1 represent packaging variants of the same electrical specification).

Eaton GDC Series (GDC-32MA): This part matches all critical electrical and mechanical parameters. It is Active status with regulatory approvals from cURus and IMQ. The GDC series represents an alternative Eaton product line with equivalent performance characteristics.

Littelfuse Series 218 (0218.032MXP, 0218.032TXP): These parts are parametric equivalents with matching current rating, voltage rating, response time, and package dimensions. Both are Active status and ROHS3 compliant. Differences exist in melting I²t (0.011 versus 0.0051) and DC cold resistance (48.258 Ohms versus 21 Ohms) compared to Eaton variants. Both parts support extended operating temperature range (-55°C to 125°C) and carry comprehensive regulatory certifications including UL, VDE, CSA, and CCC. The 0218.032TXP includes KC certification in addition to other approvals.

Selection of Littelfuse variants is appropriate when Eaton parts are unavailable or when the extended temperature operating range is required for the application.

Frequently Asked Questions (FAQ)

Q: Can BK/S506-32-R be used as a direct replacement for S506-32-R?

A: Yes. BK/S506-32-R is a direct equivalent with identical electrical parameters, melting I²t, DC cold resistance, and mechanical dimensions. Both are Eaton products with Active status and ROHS3 compliance.

Q: What is the difference between BK/S506-32-R and BK1/S506-32-R?

A: Both parts have identical electrical specifications and performance characteristics. The designations BK and BK1 represent packaging variants. Selection between them is based on inventory availability and packaging requirements.

Q: Can Littelfuse 0218.032MXP replace S506-32-R?

A: Yes, for applications where the parametric equivalence is acceptable. Both parts share the same current rating (32 mA), voltage rating (250 V AC), response time (slow blow), and package dimensions (5x20mm). However, the melting I²t differs (0.011 versus 0.0051) and DC cold resistance differs (48.258 Ohms versus 21 Ohms). The Littelfuse part supports an extended operating temperature range (-55°C to 125°C).

Q: What is the difference between 0218.032MXP and 0218.032TXP?

A: Both Littelfuse parts have identical electrical specifications and performance characteristics. The designations MXP and TXP represent different certification profiles. 0218.032TXP includes KC certification in addition to other regulatory approvals.

Q: Are all substitute parts ROHS3 compliant?

A: S506-32-R, BK/S506-32-R, BK1/S506-32-R, 0218.032MXP, and 0218.032TXP are all ROHS3 compliant. GDC-32MA RoHS status is not specified in the provided data.

Q: What regulatory certifications are common across all parts?

A: All parts carry UL and VDE certifications. IMQ certification is present on S506-32-R, BK/S506-32-R, BK1/S506-32-R, GDC-32MA, and both Littelfuse variants. CCC and SEMKO certifications are present on most variants. Littelfuse parts include CSA certification; 0218.032TXP includes KC certification.

Q: Does the fuse require a specific holder?

A: Yes. All listed parts are cartridge fuses that require a compatible 5mm x 20mm fuse holder for installation. The fuse holder must be rated for 250 V AC and 35A breaking capacity.

Q: What is the significance of the melting I²t parameter?

A: Melting I²t indicates the thermal energy required to melt the fuse element. Eaton variants have a melting I²t of 0.0051, while Littelfuse variants have 0.011. This difference affects the thermal response characteristics of the fuse. Application-specific thermal requirements determine which value is appropriate.

Q: Can these fuses be used in DC applications?

A: The parts are rated for 250 V AC. DC application suitability depends on the specific circuit design and application requirements. Consult application-specific design documentation.