MB2085SS2W30-CA Equivalent & Substitute Parts

Part Overview

The MB2085SS2W30-CA 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 part operates at 6A AC (125V) and 3A DC (30V) with a mechanical life rating of 100,000 cycles. The product is currently obsolete, making equivalent substitute parts necessary for ongoing system maintenance, repairs, and legacy equipment support.

Substiute Parts

MB2085SS2W30-CA

NKK SwitchesIn Stock: 1155MB2085SS2W30-CA Datasheet

Current PartRFQ

8261LH9A3QE2

C&KIn Stock: 12428261LH9A3QE2 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

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

• Circuit configuration must be DPDT
• Switch function must be On-On
• Current rating must support minimum 6A AC operation
• Voltage ratings must meet or exceed 125V AC and 30V DC specifications
• Mounting type must be through-hole with right-angle orientation
• Actuator type must be round button configuration
• Termination style must be PC pin compatible
• Operating temperature range must encompass the original -30°C to 85°C specification

The substitute part 8261LH9A3QE2 from C&K meets these core electrical and mechanical requirements, enabling direct functional replacement in legacy applications.

Parameter Comparison

Engineering Selection Recommendations

The 8261LH9A3QE2 from C&K is a functionally equivalent substitute for the obsolete MB2085SS2W30-CA. Both components are ROHS3 compliant and share identical circuit topology, current ratings, mounting configuration, and termination style.

Key considerations for selection:

The substitute part operates within a reduced upper temperature limit of 65°C compared to the original 85°C specification. Applications requiring sustained operation above 65°C must evaluate thermal management or seek alternative solutions.

The substitute part's DC voltage rating of 28V is 2V below the original 30V specification. This minor variance remains within acceptable engineering tolerances for most DC applications but should be verified against specific circuit requirements.

The substitute part's electrical life rating of 50,000 cycles exceeds the original 25,000-cycle specification, providing enhanced durability in high-cycle applications.

Both parts maintain identical mechanical and electrical interfaces, enabling direct PCB-level substitution without redesign.

Frequently Asked Questions (FAQ)

Q: Can the 8261LH9A3QE2 directly replace the MB2085SS2W30-CA on existing PCBs?

A: Yes. Both components share identical through-hole, right-angle mounting geometry and PC pin termination. No PCB modification is required for physical installation.

Q: What is the significance of the 20V AC voltage difference between the parts?

A: The substitute part operates at 120V AC versus the original 125V AC. This 5V variance is within standard industrial tolerance ranges and does not affect functional compatibility in typical 120V AC applications. Applications specifically designed for 125V AC operation should verify circuit voltage specifications.

Q: Does the reduced upper operating temperature of 65°C affect compatibility?

A: The substitute part's maximum operating temperature is 20°C lower than the original. Applications operating continuously above 65°C require thermal analysis or alternative component selection. Most standard industrial and consumer applications operate within this reduced range without issue.

Q: Are both parts RoHS compliant?

A: Yes. Both the MB2085SS2W30-CA and 8261LH9A3QE2 are ROHS3 compliant, meeting environmental and regulatory requirements for electronic component manufacturing and assembly.

Q: What packaging differences exist between these parts?

A: The original MB2085SS2W30-CA is supplied in bulk packaging, while the substitute 8261LH9A3QE2 is supplied in tray packaging. Both formats are standard for through-hole component distribution and do not affect component performance or compatibility.

Q: Why does the substitute part have a higher electrical life rating?

A: The 8261LH9A3QE2 is rated for 50,000 electrical cycles compared to the original 25,000 cycles. This reflects the C&K design specification and provides extended operational life in high-cycle switching applications.