BK/AGC-V-3/8 Equivalent & Substitute Parts

Part Overview

The BK/AGC-V-3/8 is a 375 mA, 250 V AC/DC fast-blow glass cartridge fuse in the 3AB/3AG package format with through-hole mounting. Manufactured by Eaton - Electronics Division, this component is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain circuit protection functionality in applications where the original part is no longer available or where active product alternatives offer improved compliance status.

Substiute Parts

BK/AGC-V-3/8

Eaton - Electronics DivisionIn Stock: 706BK/AGC-V-3/8 Datasheet

Current PartRFQ

BK/AGC-V-3/8-R

Eaton - Electronics DivisionIn Stock: 998BK/AGC-V-3/8-R Datasheet

DirectRFQ

AGC-V-3/8-R

Eaton - Electronics DivisionIn Stock: 974AGC-V-3/8-R Datasheet

Parametric EquivalentRFQ

BK/AGC-BV-3/8

Eaton - Electronics DivisionIn Stock: 1066BK/AGC-BV-3/8 Datasheet

Parametric EquivalentRFQ

0318.375MXP

Littelfuse Inc.In Stock: 7610318.375MXP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BK/AGC-V-3/8 are classified based on electrical and mechanical parameter alignment:

Direct Manufacturer Equivalents (Eaton - Electronics Division):

• BK/AGC-V-3/8-R and AGC-V-3/8-R are direct equivalents with identical electrical specifications (375 mA, 250 V AC, fast-blow response, 35 A breaking capacity, 0.09 Melting I²t). These parts share the same 3AB/3AG package, through-hole mounting, and operating temperature range. The primary distinction is product status: both are active products with RoHS compliance, whereas the original BK/AGC-V-3/8 is obsolete and RoHS non-compliant.

Parametric Equivalent (Eaton - Electronics Division):

• BK/AGC-BV-3/8 maintains all critical electrical parameters (375 mA, 250 V AC, fast-blow, 35 A breaking capacity, 0.09 Melting I²t) and mechanical specifications (3AB/3AG package, through-hole mounting, identical dimensions). This part is active but RoHS non-compliant, similar to the original part's compliance status.

Cross-Manufacturer Substitute (Littelfuse Inc.):

• 0318.375MXP is a parametric equivalent from Littelfuse Inc. with matching current rating (375 mA), voltage rating (250 V AC), response time (fast-blow), package format (3AB/3AG), and breaking capacity (35 A). Physical dimensions and DC cold resistance differ slightly but remain within acceptable tolerance for the 3AB/3AG form factor. This part is active and RoHS3 compliant with CE, CSA, and UL certifications.

Substitution is determined by equivalence in current rating, voltage rating, response time classification, package/case format, breaking capacity, and mounting type. All listed substitutes meet these criteria.

Parameter Comparison

Engineering Selection Recommendations

For RoHS-Compliant Applications: BK/AGC-V-3/8-R and AGC-V-3/8-R are the preferred direct substitutes. Both are manufactured by Eaton - Electronics Division with active product status and RoHS compliance. These parts are electrically and mechanically identical to the original BK/AGC-V-3/8, differing only in packaging format (bulk) and compliance certification. Selection between these two Eaton variants depends on packaging requirements.

For Cross-Manufacturer Flexibility: 0318.375MXP from Littelfuse Inc. provides an alternative with active product status and ROHS3 compliance. This part meets all critical electrical parameters and maintains the 3AB/3AG package format. The Melting I²t value of 0.185 differs from the Eaton parts (0.09), reflecting a different thermal response characteristic within the fast-blow classification. CE certification is included in addition to CSA and UL approvals.

For Non-Compliant Applications: BK/AGC-BV-3/8 maintains the original RoHS non-compliant status while offering active product availability. This part is electrically and mechanically equivalent to BK/AGC-V-3/8 and may be selected where RoHS compliance is not a requirement.

All substitute parts are certified by CSA and UL, matching the original part's approval agencies. Selection should be based on compliance requirements, packaging preferences, and thermal response characteristics appropriate to the circuit application.

Frequently Asked Questions (FAQ)

Q: Can BK/AGC-V-3/8-R be used as a direct replacement for BK/AGC-V-3/8?

A: Yes. BK/AGC-V-3/8-R is a direct electrical and mechanical equivalent with identical current rating (375 mA), voltage rating (250 V AC), response time (fast-blow), package format (3AB/3AG), and breaking capacity (35 A). The primary differences are product status (active vs. obsolete) and RoHS compliance (compliant vs. non-compliant).

Q: What is the difference between BK/AGC-V-3/8-R and AGC-V-3/8-R?

A: Both parts are electrically and mechanically identical. The difference is in the part number prefix: BK/AGC-V-3/8-R includes the "BK" designation, while AGC-V-3/8-R does not. Both are Eaton products with active status and RoHS compliance. Packaging format may differ (bulk vs. other configurations).

Q: Can 0318.375MXP from Littelfuse be used instead of the Eaton BK/AGC-V-3/8?

A: Yes, with consideration of thermal response. The 0318.375MXP matches all critical parameters: 375 mA current rating, 250 V AC voltage rating, fast-blow response, 3AB/3AG package, and 35 A breaking capacity. However, the Melting I²t value is 0.185 compared to 0.09 for the Eaton parts, indicating a different thermal response curve. Both are classified as fast-blow fuses and are suitable for the same package footprint and mounting type.

Q: Why is the Melting I²t different for the Littelfuse part?

A: Melting I²t is a thermal characteristic that reflects how quickly a fuse element melts under overcurrent conditions. Different manufacturers may use different fuse element materials and designs, resulting in different I²t values. Both the Eaton (0.09) and Littelfuse (0.185) parts are fast-blow fuses and meet the 35 A breaking capacity specification. The choice depends on the specific thermal protection requirements of the circuit.

Q: Are all substitute parts certified by the same agencies?

A: The Eaton parts (BK/AGC-V-3/8-R, AGC-V-3/8-R, BK/AGC-BV-3/8) are certified by CSA and UL, matching the original BK/AGC-V-3/8. The Littelfuse 0318.375MXP includes additional CE certification in addition to CSA and UL approvals.

Q: What is the physical size difference between the Eaton and Littelfuse parts?

A: Both parts conform to the 3AB/3AG package standard. The Eaton parts measure 0.266" Dia x 1.292" L (6.76mm x 32.82mm). The Littelfuse 0318.375MXP measures 0.275" Dia x 1.288" L (6.99mm x 32.72mm). These minor dimensional variations are within the tolerance of the 3AB/3AG form factor and do not affect mechanical compatibility in standard fuse holders.

Q: Should I choose a RoHS-compliant substitute?

A: RoHS compliance is determined by application requirements and regulatory jurisdiction. BK/AGC-V-3/8-R and AGC-V-3/8-R offer RoHS compliance, while BK/AGC-BV-3/8 and the original BK/AGC-V-3/8 are non-compliant. The Littelfuse 0318.375MXP is ROHS3 compliant. Selection should align with the end-use application's compliance obligations.