GSAP 1.6-R Ceramic Fuse Equivalent & Substitute Parts

Part Overview

The GSAP 1.6-R is a 1.6 A ceramic cartridge fuse rated for 250 V AC operation, manufactured by Bel Fuse Inc. This component is classified as obsolete, making identification of compatible substitute parts essential for ongoing system maintenance and component procurement. The fuse is designed for through-hole mounting in 3AB/3AG form factor applications requiring slow-blow response characteristics.

Substiute Parts

GSAP 1.6-R

Bel Fuse Inc.In Stock: 1006GSAP 1.6-R Datasheet

Current PartRFQ

032501.6MXP

Littelfuse Inc.In Stock: 912032501.6MXP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the GSAP 1.6-R is determined by strict alignment of the following electrical and mechanical parameters:

• Current Rating: 1.6 A (exact match required)
• Voltage Rating - AC: 250 V (exact match required)
• Fuse Type: Cartridge, Ceramic (exact match required)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (Axial) (exact match required)
• Response Time: Slow Blow (exact match required)
• Mounting Type: Through Hole (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)

The substitute part 032501.6MXP from Littelfuse Inc. meets all mandatory substitution criteria. This part maintains identical electrical ratings, form factor, and thermal operating specifications while offering active product status and expanded DC voltage capability (125 V DC).

Parameter Comparison

Engineering Selection Recommendations

The 032501.6MXP from Littelfuse Inc. is the qualified substitute for the obsolete GSAP 1.6-R. Selection rationale is based on the following factors:

• All critical electrical parameters (current, AC voltage, fuse type, response time) are identical
• Physical form factor and mounting configuration are equivalent
• Operating temperature range matches the original specification
• The substitute maintains active product status, ensuring long-term availability and supply chain continuity
• Regulatory compliance certifications (CE, CSA, PSE, UL) are maintained or expanded
• RoHS3 compliance is preserved
• Minor dimensional variations (0.003" diameter, 0.008" length) remain within typical mechanical tolerance for 3AB/3AG cartridge fuses and do not affect form-fit-function compatibility

The substitute part provides additional DC voltage rating capability (125 V DC) not specified in the original part, which represents an enhancement for applications requiring dual AC/DC operation.

Frequently Asked Questions (FAQ)

Q: Can the 032501.6MXP be used as a direct replacement for the GSAP 1.6-R?

A: Yes. The 032501.6MXP meets all mandatory electrical and mechanical substitution criteria, including current rating, AC voltage rating, ceramic cartridge construction, 3AB/3AG form factor, slow-blow response, through-hole mounting, and operating temperature range.

Q: What are the key differences between these two fuses?

A: The primary differences are: (1) Product status—the substitute is active while the original is obsolete; (2) DC voltage rating—the substitute specifies 125 V DC operation while the original does not; (3) Breaking capacity under DC conditions—the substitute provides 10 kA DC versus unspecified DC performance; (4) Melting I²t—the substitute is 45 versus 39 for the original; (5) DC cold resistance—0.176 Ohms versus 0.155 Ohms; (6) Minor dimensional variations within standard tolerance.

Q: Are there any compatibility concerns with the dimensional differences?

A: No. The dimensional variations (0.003" diameter increase, 0.008" length increase) are within standard mechanical tolerances for 3AB/3AG cartridge fuses and do not affect insertion, retention, or electrical contact in standard fuse holders.

Q: Does the substitute maintain the same regulatory approvals?

A: Yes. The substitute maintains CE, CSA, and PSE certifications present in the original and adds UL certification, representing equivalent or enhanced regulatory compliance.

Q: Is the substitute RoHS compliant?

A: Yes. The 032501.6MXP is ROHS3 compliant, matching the original part's environmental compliance status.