Equivalent & Substitute Parts for BK/AGC-V-8

Part Overview

The BK/AGC-V-8 is an 8 A, 250 V AC/DC fast-blow glass cartridge fuse with 3AB/3AG package configuration and through-hole mounting. This fuse is classified as obsolete product status. Identification of equivalent and substitute parts is necessary to maintain circuit protection functionality in applications where the original component is no longer available through standard procurement channels. Substitute parts must maintain identical electrical ratings, mechanical dimensions, and approval certifications to ensure direct compatibility.

Substiute Parts

BK/AGC-V-8

Eaton - Electronics DivisionIn Stock: 849BK/AGC-V-8 Datasheet

Current PartRFQ

BK/AGC-V-8-R

Eaton - Electronics DivisionIn Stock: 1185BK/AGC-V-8-R Datasheet

DirectRFQ

AGC-V-8-R

Eaton - Electronics DivisionIn Stock: 900AGC-V-8-R Datasheet

Parametric EquivalentRFQ

0318008.HXP

LittelfuseIn Stock: 8630318008.HXP Datasheet

SimilarRFQ

0318008.MXP

Littelfuse Inc.In Stock: 27200318008.MXP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BK/AGC-V-8 are classified based on equivalence to the following critical parameters: current rating (8 A), voltage rating (250 V AC), fuse type (cartridge glass), response time (fast blow), package configuration (3AB/3AG), and mounting type (through hole). All substitute parts must maintain the 200 A breaking capacity at rated voltage and operate within the -55°C to 125°C temperature range.

Direct Manufacturer Equivalents (Eaton - Electronics Division):

• BK/AGC-V-8-R: Active product status with RoHS compliance
• AGC-V-8-R: Active product status with RoHS compliance

Cross-Manufacturer Equivalents (Littelfuse Inc.):

• 0318008.HXP: Active product status with ROHS3 compliance
• 0318008.MXP: Active product status with ROHS3 compliance

All listed substitutes meet the electrical and mechanical requirements for direct replacement in 8 A, 250 V AC/DC fast-blow fuse applications.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection - Eaton Direct Equivalents:

BK/AGC-V-8-R and AGC-V-8-R are the preferred substitutes for the obsolete BK/AGC-V-8. Both parts are manufactured by Eaton - Electronics Division and maintain identical electrical and mechanical specifications. BK/AGC-V-8-R carries active product status with RoHS compliance, making it suitable for new designs and applications requiring environmental compliance. AGC-V-8-R also maintains active status with RoHS compliance. These parts provide direct functional replacement with enhanced compliance posture compared to the original obsolete component.

Secondary Selection - Littelfuse Cross-Manufacturer Equivalents:

0318008.MXP and 0318008.HXP are Littelfuse equivalents that satisfy all electrical and mechanical requirements. Both parts maintain active product status and ROHS3 compliance. The Littelfuse parts carry expanded approval certifications (CE, KC, PSE in addition to CSA and UL), providing broader regulatory acceptance in international applications. 0318008.MXP offers higher inventory availability (2612 units) compared to 0318008.HXP (797 units).

Compliance Considerations:

All substitute parts are RoHS compliant or ROHS3 compliant, addressing environmental regulatory requirements. The Littelfuse parts provide additional certifications (CE, KC, PSE) for applications requiring broader international compliance. All parts maintain CSA and UL approvals consistent with the original component.

Frequently Asked Questions (FAQ)

Q: Can BK/AGC-V-8-R be used as a direct replacement for BK/AGC-V-8?

A: Yes. BK/AGC-V-8-R is a direct equivalent with identical current rating (8 A), voltage rating (250 V AC), fuse type (cartridge glass), response time (fast blow), package configuration (3AB/3AG), and mounting type (through hole). The primary difference is product status (active versus obsolete) and RoHS compliance improvement.

Q: What is the difference between BK/AGC-V-8-R and AGC-V-8-R?

A: Both parts are manufactured by Eaton and maintain identical electrical and mechanical specifications. The primary difference is the part number prefix. Both are active products with RoHS compliance and are suitable for direct substitution.

Q: Are Littelfuse parts 0318008.MXP and 0318008.HXP compatible with the original BK/AGC-V-8?

A: Yes. Both Littelfuse parts meet all critical electrical parameters (8 A, 250 V AC, fast blow, 200 A breaking capacity) and mechanical requirements (3AB/3AG package, through-hole mounting, -55°C to 125°C operating range). Physical dimensions are within acceptable tolerance for standard fuse holders.

Q: What is the significance of the melting I²t values shown in the specifications?

A: Melting I²t is a thermal characteristic that affects fuse response behavior. The original BK/AGC-V-8 specifies 256 A²s, while AGC-V-8-R specifies 486 A²s, and Littelfuse parts specify 166 A²s. All values are within the fast-blow fuse category and maintain the same response time classification for 8 A rated current.

Q: Which substitute part should be selected for new designs?

A: For new designs, BK/AGC-V-8-R or AGC-V-8-R are recommended as primary selections due to direct manufacturer equivalence and active product status. For applications requiring expanded international certifications, 0318008.MXP is recommended due to CE, KC, and PSE approvals in addition to CSA and UL.

Q: Are there any dimensional differences between substitute parts?

A: The original BK/AGC-V-8 specifies 0.266" diameter × 1.292" length. Littelfuse parts (0318008.HXP and 0318008.MXP) specify 0.275" diameter × 1.288" length. These minor dimensional variations are within acceptable tolerance for standard 3AB/3AG fuse holders and do not affect functional compatibility.

Q: What is the DC cold resistance specification and why does it vary?

A: DC cold resistance is the resistance of the fuse element at room temperature. The original part and Eaton substitutes specify 0.009 ohms, while Littelfuse parts specify 0.0122 ohms. Both values are acceptable for 8 A fast-blow fuses and do not affect circuit protection performance.