BK/AGC-V-7 Equivalent & Substitute Parts

Part Overview

The BK/AGC-V-7 is a 7 A, 250 V AC/DC fast-blow glass cartridge fuse manufactured by Eaton - Electronics Division. This through-hole component features a 3AB, 3AG package format with dimensions of 1/4" x 1-1/4" (6.76mm x 32.82mm). The fuse is designed for general-purpose circuit protection applications requiring fast response characteristics and is currently in active production status. Substitute parts are identified when original inventory is unavailable, when supply chain optimization is required, or when design flexibility permits equivalent component selection within the same electrical and mechanical parameter envelope.

Substiute Parts

BK/AGC-V-7

Eaton - Electronics DivisionIn Stock: 1275BK/AGC-V-7 Datasheet

Current PartRFQ

0318007.HXP

Littelfuse Inc.In Stock: 10640318007.HXP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BK/AGC-V-7 are identified based on strict electrical and mechanical compatibility criteria. The following parameters must match or remain within acceptable tolerances for direct substitution:

Critical Matching Parameters:

• Current Rating: 7 A (exact match required)
• Voltage Rating (AC): 250 V (exact match required)
• Response Time: Fast Blow (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (exact match required)
• Mounting Type: Through Hole (exact match required)
• Breaking Capacity @ Rated Voltage: 200 A (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)

The substitute part 0318007.HXP manufactured by Littelfuse Inc. satisfies all critical matching parameters and is therefore classified as a direct electrical and mechanical equivalent.

Parameter Comparison

Engineering Selection Recommendations

BK/AGC-V-7 (Eaton - Electronics Division): This part is the primary specification component. It maintains active production status and carries CSA and UL approvals. Selection is appropriate when Eaton component standardization is required or when RoHS non-compliance is acceptable within the application context.

0318007.HXP (Littelfuse Inc.): This substitute part is electrically and mechanically equivalent across all critical parameters. It carries expanded regulatory approvals including CE, CSA, KC, PSE, and UL certifications. The Littelfuse component achieves ROHS3 compliance, making it suitable for applications with RoHS requirements. Minor dimensional variations (0.009" diameter difference, 0.004" length difference) and DC cold resistance differential (0.0146 Ohms vs. 0.012 Ohms) remain within acceptable tolerances for through-hole cartridge fuse applications. The lower melting I²t value (118 vs. 195.02) reflects different thermal response characteristics within the fast-blow classification but does not affect substitution validity given identical current and voltage ratings.

Frequently Asked Questions (FAQ)

Q: Can 0318007.HXP be used as a direct replacement for BK/AGC-V-7 in existing designs?

A: Yes. The 0318007.HXP meets all critical electrical and mechanical parameters: 7 A current rating, 250 V AC voltage rating, fast-blow response time, 3AB/3AG cartridge glass package, 1/4" x 1-1/4" form factor, 200 A breaking capacity, and -55°C to 125°C operating temperature range. Both components are through-hole mounted and carry UL and CSA approvals.

Q: What are the dimensional differences between these parts?

A: The BK/AGC-V-7 measures 0.266" diameter x 1.292" length (6.76mm x 32.82mm). The 0318007.HXP measures 0.275" diameter x 1.288" length (6.99mm x 32.72mm). These variations are within standard manufacturing tolerances for 3AB/3AG cartridge fuses and do not affect mechanical fit in standard through-hole fuse holders.

Q: Does the difference in DC cold resistance affect circuit performance?

A: The BK/AGC-V-7 has 0.012 Ohms DC cold resistance; the 0318007.HXP has 0.0146 Ohms. This 0.0026 Ohm difference is negligible in typical circuit protection applications and does not alter the substitution validity.

Q: What is the significance of the different melting I²t values?

A: The BK/AGC-V-7 has a melting I²t of 195.02; the 0318007.HXP has 118. Both components are classified as fast-blow fuses with identical current and voltage ratings. The I²t difference reflects manufacturer-specific thermal design but does not affect the substitution relationship, as both parts respond identically to the specified 7 A current rating.

Q: Which part should be selected for RoHS-compliant applications?

A: The 0318007.HXP is ROHS3 compliant. The BK/AGC-V-7 is RoHS non-compliant. For applications requiring RoHS compliance, the Littelfuse component is the appropriate selection.

Q: Are there any regulatory approval differences?

A: Both parts carry UL and CSA approvals. The 0318007.HXP carries additional certifications: CE, KC, and PSE. These additional approvals expand geographic and market applicability without affecting core electrical or mechanical compatibility.