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

Part Overview

The BK/AGC-V-3 is a 3 A 250 V AC/DC fast-blow glass cartridge fuse in the 3AB/3AG form factor with through-hole mounting. This component is classified as obsolete. Identification of equivalent and substitute parts is necessary to support ongoing maintenance, repair, and design continuity for systems utilizing this fuse specification. Active alternatives with identical electrical and mechanical parameters are available from both the original manufacturer and qualified cross-suppliers.

Substiute Parts

BK/AGC-V-3

Eaton - Electronics DivisionIn Stock: 815BK/AGC-V-3 Datasheet

Current PartRFQ

BK/AGC-V-3-R

Eaton - Electronics DivisionIn Stock: 796BK/AGC-V-3-R Datasheet

DirectRFQ

AGC-V-3-R

Eaton - Electronics DivisionIn Stock: 1059AGC-V-3-R Datasheet

Parametric EquivalentRFQ

0318003.HXP

Littelfuse Inc.In Stock: 9220318003.HXP Datasheet

SimilarRFQ

0318003.MXP

Littelfuse Inc.In Stock: 9150318003.MXP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BK/AGC-V-3 is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Current Rating: 3 A
• Voltage Rating (AC): 250 V
• Response Time: Fast Blow
• Breaking Capacity @ Rated Voltage: 100 A

Mechanical Parameters:

• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (Axial)
• Mounting Type: Through Hole
• Physical Dimensions: 0.266" Dia x 1.292" L (6.76mm x 32.82mm)

Environmental Parameters:

• Operating Temperature Range: -55°C ~ 125°C
• Approval Agencies: CSA, UL

All substitute parts listed below satisfy these parameters. Variations in secondary characteristics such as melting I²t, DC cold resistance, and dimensional tolerances within the specified package class do not preclude functional equivalence in circuit applications designed for the BK/AGC-V-3 specification.

Parameter Comparison

Engineering Selection Recommendations

Direct Manufacturer Equivalents (Eaton - Electronics Division):

BK/AGC-V-3-R and AGC-V-3-R are active-status direct equivalents from the original manufacturer. Both parts maintain identical electrical and mechanical specifications to the BK/AGC-V-3. Selection between these two Eaton variants is determined by packaging requirements: BK/AGC-V-3-R is supplied in bulk packaging, while AGC-V-3-R is also supplied in bulk packaging. Both are RoHS compliant, addressing regulatory requirements that the obsolete BK/AGC-V-3 does not satisfy.

Cross-Manufacturer Equivalents (Littelfuse Inc.):

0318003.HXP and 0318003.MXP are functionally equivalent parts from Littelfuse Inc. These components satisfy all critical electrical and mechanical parameters. Both are active-status products with ROHS3 compliance and extended approval agency certifications (CE, CSA, KC, PSE, UL). Dimensional variation exists within the 3AB/3AG package class specification (0.275" Dia x 1.288" L versus 0.266" Dia x 1.292" L), which remains within standard package tolerances for this form factor. Secondary electrical characteristics (melting I²t and DC cold resistance) differ but do not affect functional equivalence in applications designed for 3 A 250 V fast-blow operation.

Compliance Consideration:

All substitute parts listed are RoHS compliant or ROHS3 compliant, whereas the BK/AGC-V-3 is RoHS non-compliant. For applications subject to RoHS regulations, substitution with any listed alternative is required.

Frequently Asked Questions (FAQ)

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

A: Yes. BK/AGC-V-3-R is a direct equivalent from Eaton - Electronics Division with identical electrical ratings (3 A, 250 V AC), response time (fast blow), breaking capacity (100 A), package specification (3AB, 3AG), and operating temperature range (-55°C ~ 125°C). The primary difference is product status: BK/AGC-V-3-R is active, and BK/AGC-V-3 is obsolete. BK/AGC-V-3-R also provides RoHS3 compliance.

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

A: Both are Eaton - Electronics Division products with identical electrical and mechanical specifications. The difference is in the part number designation and RoHS status: BK/AGC-V-3-R is ROHS3 compliant, while AGC-V-3-R is RoHS compliant. Both are active-status products supplied in bulk packaging.

Q: Can Littelfuse 0318003.HXP or 0318003.MXP replace the BK/AGC-V-3?

A: Yes. Both Littelfuse parts are functionally equivalent. They satisfy all critical electrical parameters (3 A, 250 V AC, fast blow, 100 A breaking capacity) and mechanical parameters (3AB/3AG package, through-hole mounting, -55°C ~ 125°C operating range). Dimensional tolerances within the 3AB/3AG package class are acceptable. Both are active-status products with ROHS3 compliance and extended approval certifications.

Q: Are there dimensional differences between the Eaton and Littelfuse substitutes?

A: Yes. Eaton parts (BK/AGC-V-3-R, AGC-V-3-R) are specified at 0.266" Dia x 1.292" L. Littelfuse parts (0318003.HXP, 0318003.MXP) are specified at 0.275" Dia x 1.288" L. Both dimensions fall within the 3AB/3AG package class specification and are mechanically compatible with standard fuse holders designed for this form factor.

Q: What is the significance of the melting I²t difference between Eaton and Littelfuse parts?

A: Melting I²t is a secondary characteristic that describes thermal energy absorption. Eaton parts specify 45.9, while Littelfuse parts specify 14. Both values are within acceptable ranges for 3 A fast-blow fuses and do not affect functional equivalence in circuits designed for 3 A 250 V operation. The fast-blow response time is the primary determinant of circuit protection behavior.

Q: Which substitute should be selected for new designs?

A: For new designs, select from active-status parts with current compliance certifications. BK/AGC-V-3-R, AGC-V-3-R, 0318003.HXP, and 0318003.MXP are all suitable. Selection should be based on supply chain availability, packaging preference (bulk), and any specific approval agency requirements for the target application. All listed substitutes are RoHS compliant or ROHS3 compliant.

Q: Is the BK/AGC-V-3 still available?

A: The BK/AGC-V-3 is classified as obsolete. Current inventory is limited (721 pcs reported). For ongoing supply assurance, transition to an active-status equivalent such as BK/AGC-V-3-R, AGC-V-3-R, 0318003.HXP, or 0318003.MXP.