MB2085SS2W30-CB Equivalent & Substitute Parts

Part Overview

The MB2085SS2W30-CB is a DPDT pushbutton switch manufactured by NKK Switches, designed for standard through-hole, right-angle mounting applications. This component operates at 6A (AC) / 3A (DC) with voltage ratings of 125V AC and 30V DC. The product is currently obsolete, making identification of functionally equivalent alternatives essential for ongoing maintenance, repair, and legacy system support.

Substiute Parts

MB2085SS2W30-CB

NKK SwitchesIn Stock: 906MB2085SS2W30-CB Datasheet

Current PartRFQ

8261LH9A3QE2

C&KIn Stock: 12428261LH9A3QE2 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MB2085SS2W30-CB is determined by the following critical parameters:

Circuit and Function Requirements:

• DPDT configuration with On-On switching function

Electrical Performance Criteria:

• AC current rating of 6A minimum
• AC voltage rating of 120V minimum (125V primary specification)
• DC current rating of 3A minimum
• DC voltage rating of 28V minimum (30V primary specification)

Mechanical and Physical Compatibility:

• Through-hole, right-angle mounting orientation
• Round button actuator type
• PC pin termination style

Regulatory and Environmental Compliance:

• ROHS3 compliance required
• Operating temperature range compatibility with -30°C to 65°C minimum

The substitute part 8261LH9A3QE2 meets these criteria within acceptable engineering tolerances for equivalent functionality.

Parameter Comparison

Engineering Selection Recommendations

The 8261LH9A3QE2 from C&K is a functionally equivalent substitute for the obsolete MB2085SS2W30-CB. Both components share identical circuit configuration, switching function, AC current and voltage ratings, mounting orientation, and actuator characteristics.

The substitute part demonstrates superior electrical life performance (50,000 cycles versus 25,000 cycles) and equivalent DC current capability (6A versus 3A). The DC voltage rating of 28V is within acceptable operating parameters for applications designed for 30V DC.

The primary consideration is the operating temperature range. The substitute part operates to 65°C maximum, compared to 85°C for the original component. Applications requiring sustained operation above 65°C require thermal analysis to confirm suitability.

Both components maintain ROHS3 compliance and equivalent termination characteristics, supporting direct PCB integration without redesign.

Frequently Asked Questions (FAQ)

Q: Can the 8261LH9A3QE2 directly replace the MB2085SS2W30-CB in existing designs?

A: Yes, for applications operating within -30°C to 65°C. The electrical specifications, circuit configuration, mounting type, and termination style are equivalent. Verify that your application does not require sustained operation above 65°C.

Q: What is the significance of the voltage rating differences (125V AC vs. 120V AC, 30V DC vs. 28V DC)?

A: The substitute part operates at slightly lower voltage ratings. For applications at or near the original 125V AC or 30V DC specifications, confirm that actual operating voltages remain below the substitute part limits. Standard industrial applications typically operate at 110-120V AC and 24-28V DC, making the substitute suitable.

Q: Does the higher electrical life rating of the substitute part affect compatibility?

A: No. Higher electrical life indicates extended component durability and is not a limiting factor for substitution. This represents an improvement over the original specification.

Q: Are there packaging differences between these parts?

A: The MB2085SS2W30-CB is supplied in standard packaging, while the 8261LH9A3QE2 is supplied in trays. Verify tray packaging compatibility with your receiving and assembly processes.

Q: What compliance certifications apply to both parts?

A: Both components are ROHS3 compliant. The original part is REACH Unaffected, while the substitute is REACH Affected. Confirm REACH compliance requirements for your application and end-use market.