MB2085SS2G30-BA Equivalent & Substitute Parts

Part Overview

The MB2085SS2G30-BA is a pushbutton switch manufactured by NKK Switches, classified as a DPDT (Double Pole Double Throw) standard through-hole component with right-angle mounting. This switch is rated for 0.4VA at 28V AC/DC and features epoxy sealed terminals with a mechanical life of 100,000 cycles. The product is currently obsolete, making identification of functionally equivalent alternatives necessary for ongoing maintenance, repair, and legacy system support.

Substiute Parts

MB2085SS2G30-BA

NKK SwitchesIn Stock: 1047MB2085SS2G30-BA Datasheet

Current PartRFQ

8261LH9A3QE2

C&KIn Stock: 12428261LH9A3QE2 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MB2085SS2G30-BA is determined by the following critical parameters:

Circuit and Function Compatibility: The substitute must maintain DPDT configuration with On-On switching function to preserve electrical behavior in the host circuit.

Electrical Ratings: The substitute must support the operating voltage and current requirements. The MB2085SS2G30-BA operates at 28V AC/DC with 0.4VA current capacity. Substitute parts with higher voltage or current ratings remain compatible, as they operate within the original specification envelope.

Mechanical and Physical Compatibility: Through-hole, right-angle mounting with PC pin termination is required to ensure PCB footprint compatibility. Round button actuator type maintains consistent user interface characteristics.

Environmental and Lifecycle Parameters: Operating temperature range, mechanical life, and electrical life specifications must meet or exceed the original component's performance envelope to ensure reliability in the target application.

Compliance and Regulatory Status: RoHS3 compliance and MSL rating ensure regulatory alignment and handling requirements are maintained.

Parameter Comparison

Engineering Selection Recommendations

The 8261LH9A3QE2 (C&K) is functionally equivalent to the MB2085SS2G30-BA for applications operating within the specified parameter envelope. Both components share identical circuit configuration (DPDT On-On), termination style (PC Pin), and mounting geometry (through-hole, right-angle). The substitute part exceeds the original specification in current capacity (6A vs. 0.4VA) and AC voltage rating (120V vs. 28V), providing operational margin in these parameters.

The primary consideration is the operating temperature upper limit: the substitute part is rated to 65°C versus the original 85°C. Applications requiring sustained operation above 65°C require thermal analysis or alternative component selection.

Both parts maintain ROHS3 compliance and MSL-1 rating, ensuring regulatory alignment and standard handling procedures. The substitute part is currently in active production status, providing supply continuity for legacy system support and new builds.

Frequently Asked Questions (FAQ)

Q: Can the 8261LH9A3QE2 directly replace the MB2085SS2G30-BA in existing PCB designs?

A: Yes, provided the application operates within the substitute part's temperature range (-30°C to 65°C). Both components share identical through-hole, right-angle mounting geometry and PC pin termination, requiring no PCB layout modifications.

Q: What is the significance of the higher current rating (6A) on the substitute part?

A: The substitute part's 6A rating exceeds the original 0.4VA specification, indicating it can safely handle higher current loads. This provides operational margin and does not create compatibility issues in applications designed for the lower current rating.

Q: Are there packaging differences between these parts?

A: The MB2085SS2G30-BA uses standard packaging, while the 8261LH9A3QE2 is supplied in tray packaging. This affects receiving, storage, and handling procedures but does not impact electrical or mechanical compatibility.

Q: What compliance certifications apply to both parts?

A: Both components are ROHS3 compliant and carry MSL-1 (Unlimited) moisture sensitivity rating, meeting current regulatory requirements for electronic component procurement and assembly.

Q: Is the lower temperature upper limit (65°C vs. 85°C) a concern for my application?

A: This depends on your application's thermal environment. If sustained operation above 65°C is required, thermal analysis of the circuit and component placement is necessary to confirm the substitute part's suitability, or alternative components must be evaluated.