MB2085SS1G01-BA Equivalent & Substitute Parts

Part Overview

The MB2085SS1G01-BA is a pushbutton switch manufactured by NKK Switches, featuring DPDT (Double Pole Double Throw) circuitry with On-On switching function. This component is rated for 0.4VA at 28V AC/DC and is designed for panel mount, rear installation with solder lug termination. The product is currently obsolete, making identification of functionally equivalent alternatives necessary for ongoing maintenance, repair, and legacy system support.

Substiute Parts

MB2085SS1G01-BA

NKK SwitchesIn Stock: 686MB2085SS1G01-BA Datasheet

Current PartRFQ

8261SHZQE4

C&KIn Stock: 9688261SHZQE4 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MB2085SS1G01-BA is determined by the following critical parameters:

Circuit configuration must be DPDT to maintain electrical functionality in applications requiring simultaneous switching of two independent circuits. Switch function must be On-On to preserve the operational behavior of the original component. Mounting type must be Panel Mount, Rear to ensure mechanical compatibility with existing panel installations. Actuator type must be Round, Button to maintain form factor consistency. Termination style must be Solder Lug for compatibility with existing PCB or wiring connections. Panel cutout diameter must accommodate the 6.50mm specification or be compatible within standard tolerance ranges.

Voltage and current ratings must meet or exceed the original specifications (28V AC/DC, 0.4VA minimum) to ensure safe operation without derating. Operating temperature range must encompass or exceed the -30°C to 85°C specification. RoHS and REACH compliance status must align with regulatory requirements for the target application.

The C&K 8261SHZQE4 qualifies as a substitute based on matching circuit configuration (DPDT), switch function (On-On), mounting type (Panel Mount, Rear), actuator type (Round, Button), and termination style (Solder Lug). The substitute exceeds the original voltage and current ratings, providing operational margin. Panel cutout diameter of 6.35mm is within acceptable tolerance of the original 6.50mm specification.

Parameter Comparison

Engineering Selection Recommendations

The C&K 8261SHZQE4 is functionally equivalent to the obsolete MB2085SS1G01-BA for applications operating within the specified electrical and environmental parameters. Both components maintain ROHS3 compliance. The substitute provides superior current handling capacity (6A versus 0.4VA) and higher AC voltage rating (120V versus 28V), ensuring operational safety with margin in the original application context.

The substitute operates within a reduced temperature range (-30°C to 65°C versus -30°C to 85°C). Applications requiring operation above 65°C must evaluate thermal performance independently. The panel cutout diameter difference (6.35mm versus 6.50mm) is within standard mechanical tolerance and does not preclude installation in existing panel apertures designed for the original component.

The C&K component is currently in active production status, ensuring availability for procurement and future supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the C&K 8261SHZQE4 directly replace the MB2085SS1G01-BA in all applications?

A: The C&K 8261SHZQE4 is electrically and mechanically compatible for applications operating at 28V DC or below 28V AC, with current requirements not exceeding 0.4VA. Applications requiring operation above 65°C require independent thermal evaluation. Panel cutout diameter tolerance must be confirmed for the specific installation.

Q: What is the significance of the panel cutout diameter difference?

A: The original component specifies 6.50mm diameter; the substitute specifies 6.35mm. This 0.15mm difference is within standard mechanical tolerance for panel mount components. Existing panel apertures designed for 6.50mm will accommodate the 6.35mm substitute without modification.

Q: Are there compliance differences between the two components?

A: Both components are ROHS3 compliant. The original component is REACH Unaffected; the substitute is REACH Affected. Applications subject to REACH regulations must confirm the substitute's compliance status with regulatory requirements.

Q: What is the impact of the reduced operating temperature range in the substitute?

A: The substitute operates from -30°C to 65°C, compared to the original -30°C to 85°C. Applications requiring operation above 65°C must evaluate the substitute's thermal performance or identify alternative components with extended temperature ratings.

Q: Are the electrical life ratings equivalent?

A: Both components specify 50,000 electrical life cycles, indicating equivalent reliability in switching operations within rated electrical parameters.