BK/MDA-2-8/10 Equivalent & Substitute Parts

Part Overview

The BK/MDA-2-8/10 is a 2.8 A, 250 V AC ceramic cartridge fuse manufactured by Eaton - Electronics Division. This component is classified as obsolete, requiring identification of active equivalent and substitute parts for continued system support and procurement. The fuse operates as a slow-blow cartridge type, designed for 3AB and 3AG holder compatibility with physical dimensions of 0.250" diameter by 1.250" length (6.35mm x 31.75mm). Substitution is necessary due to the obsolete product status, which limits long-term availability and supply chain continuity.

Substiute Parts

BK/MDA-2-8/10

Eaton - Electronics DivisionIn Stock: 1140BK/MDA-2-8/10 Datasheet

Current PartRFQ

BK/MDA-2-8/10-R

Eaton - Electronics DivisionIn Stock: 1210BK/MDA-2-8/10-R Datasheet

DirectRFQ

MDA-2-8/10-R

Eaton - Electronics DivisionIn Stock: 1117MDA-2-8/10-R Datasheet

DirectRFQ

032602.8HXP

Littelfuse Inc.In Stock: 915032602.8HXP Datasheet

DirectRFQ

032602.8MXP

Littelfuse Inc.In Stock: 1036032602.8MXP Datasheet

DirectRFQ

032602.8VXP

Littelfuse Inc.In Stock: 795032602.8VXP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BK/MDA-2-8/10 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Current Rating: 2.8 A
• Voltage Rating - AC: 250 V
• Fuse Type: Cartridge, Ceramic
• Response Time: Slow Blow
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4"
• Size / Dimension: 0.250" Dia x 1.250" L (6.35mm x 31.75mm)
• Mounting Type: Requires Holder

All identified substitute parts meet these mandatory parameters. Eaton-manufactured substitutes (BK/MDA-2-8/10-R and MDA-2-8/10-R) maintain direct manufacturer lineage with active product status. Littelfuse alternatives (032602.8HXP, 032602.8MXP, 032602.8VXP) provide functional equivalence with extended DC voltage capability (125 V DC) and broader operating temperature range (-55°C ~ 125°C), while maintaining identical AC voltage and current ratings.

Parameter Comparison

Engineering Selection Recommendations

Eaton Direct Substitutes (BK/MDA-2-8/10-R and MDA-2-8/10-R):

These parts provide direct manufacturer continuity from Eaton - Electronics Division. Both are active products with ROHS3 compliance, addressing the RoHS non-compliance status of the obsolete original. BK/MDA-2-8/10-R carries no listed approval agencies, while MDA-2-8/10-R includes CE, CSA, and UL certifications. The MDA-2-8/10-R variant offers higher melting I²t (10 versus 7.2), providing enhanced thermal stability characteristics. Both maintain identical electrical specifications and physical form factor.

Littelfuse Alternatives (032602.8HXP, 032602.8MXP, 032602.8VXP):

These Littelfuse 326 series components provide functional equivalence with extended capabilities. All three variants include 125 V DC voltage rating, operating temperature range of -55°C ~ 125°C, and comprehensive international approval agencies (CE, CSA, PSE, UL). The variants differ in regional certifications: 032602.8HXP includes K-MARK, 032602.8MXP includes K-MARK, and 032602.8VXP includes KC. All Littelfuse options are ROHS3 compliant with MSL rating of 1 (Unlimited) and REACH Unaffected status. The higher melting I²t value (170) indicates different thermal response characteristics compared to Eaton variants.

Selection Basis:

For applications requiring strict manufacturer continuity and minimal specification variance, select MDA-2-8/10-R for its active status, comprehensive certifications, and direct Eaton lineage. For applications benefiting from extended DC voltage capability and broader operating temperature range, select any Littelfuse variant based on regional certification requirements.

Frequently Asked Questions (FAQ)

Q: Can BK/MDA-2-8/10-R directly replace BK/MDA-2-8/10?

A: Yes. BK/MDA-2-8/10-R is the active equivalent from Eaton - Electronics Division, maintaining identical current rating (2.8 A), AC voltage rating (250 V), fuse type (ceramic cartridge), response time (slow blow), and physical dimensions (0.250" Dia x 1.250" L). Both require 3AB/3AG holders. The primary difference is product status (active versus obsolete) and RoHS compliance (ROHS3 versus non-compliant).

Q: What is the difference between MDA-2-8/10-R and BK/MDA-2-8/10-R?

A: Both are Eaton ceramic cartridge fuses with identical electrical and physical specifications. MDA-2-8/10-R includes CE, CSA, and UL certifications and has a melting I²t of 10. BK/MDA-2-8/10-R lists no approval agencies and has a melting I²t of 7.2. Both are active products with ROHS3 compliance.

Q: Can Littelfuse 032602.8HXP replace the Eaton BK/MDA-2-8/10?

A: Yes, functionally. The 032602.8HXP maintains the same 2.8 A current rating, 250 V AC voltage rating, ceramic cartridge type, slow-blow response, and 3AB/3AG package compatibility. Additional capabilities include 125 V DC rating and -55°C ~ 125°C operating temperature range. The higher melting I²t (170 versus unspecified for original) indicates different thermal characteristics. Littelfuse variants carry broader international certifications (CE, CSA, K-MARK, PSE, UL).

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All identified substitute parts (BK/MDA-2-8/10-R, MDA-2-8/10-R, 032602.8HXP, 032602.8MXP, 032602.8VXP) are ROHS3 compliant. The original BK/MDA-2-8/10 is RoHS non-compliant.

Q: Do the Littelfuse variants fit the same holder as the Eaton original?

A: Yes. All substitute parts, including Littelfuse 032602.8HXP, 032602.8MXP, and 032602.8VXP, are specified for 3AB and 3AG holders with identical physical dimensions (0.250" Dia x 1.250" L / 6.35mm x 31.75mm).

Q: What is the significance of the melting I²t parameter?

A: Melting I²t defines the thermal energy required to melt the fuse element. Eaton variants show melting I²t values of 7.2 and 10, while Littelfuse variants specify 170. This parameter affects the fuse's thermal response characteristics and should be evaluated against circuit protection requirements.

Q: Which substitute part has the broadest approval certifications?

A: The Littelfuse variants (032602.8HXP, 032602.8MXP, 032602.8VXP) carry the most comprehensive approval agencies. All three include CE, CSA, PSE, and UL. 032602.8HXP and 032602.8MXP include K-MARK, while 032602.8VXP includes KC certification.

Q: Is DC voltage capability important for substitution?

A: DC voltage capability is not a mandatory substitution parameter for the BK/MDA-2-8/10, which specifies only AC voltage (250 V). However, Littelfuse variants provide 125 V DC rating as an additional capability. This extended rating does not prevent substitution but may be relevant for applications with DC circuit requirements.