MB2085SS2W30-BA Equivalent & Substitute Parts

Part Overview

The MB2085SS2W30-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 part is rated for 6A at 125V AC and 3A at 30V DC, featuring epoxy sealed terminals and a mechanical life of 100,000 cycles. The product is currently obsolete, making identification of functionally equivalent alternatives essential for ongoing system maintenance and component sourcing.

Substiute Parts

MB2085SS2W30-BA

NKK SwitchesIn Stock: 1145MB2085SS2W30-BA Datasheet

Current PartRFQ

8261LH9A3QE2

C&KIn Stock: 12428261LH9A3QE2 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MB2085SS2W30-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 circuit behavior in the target application.

Electrical Ratings: The substitute must meet or exceed the AC voltage rating of 125V and DC voltage rating of 30V. Current ratings must support 6A AC operation; DC current rating of 3A establishes the minimum threshold.

Mechanical and Electrical Life: While the original part specifies 100,000 mechanical cycles and 25,000 electrical cycles, substitutes with equal or superior ratings ensure equivalent operational longevity.

Physical Form Factor: Through-hole mounting with right-angle orientation and PC pin termination are mandatory to ensure PCB compatibility without redesign.

Environmental and Compliance Requirements: RoHS3 compliance and MSL rating of 1 (Unlimited) are baseline requirements for modern component sourcing.

The C&K 8261LH9A3QE2 qualifies as a functional substitute based on matching DPDT configuration, On-On function, 6A AC current rating, and compatible voltage specifications within acceptable tolerances.

Parameter Comparison

Engineering Selection Recommendations

The C&K 8261LH9A3QE2 is a qualified substitute for the obsolete MB2085SS2W30-BA based on functional equivalence across critical electrical and mechanical parameters. Both components are ROHS3 compliant and carry MSL rating 1, meeting modern regulatory requirements.

Voltage Consideration: The substitute operates at 120V AC versus the original 125V AC specification, representing a 4% reduction within acceptable industrial tolerance. DC voltage rating of 28V versus 30V represents a 2V differential. These minor reductions are acceptable for most AC-powered applications operating at standard utility voltages.

Temperature Range: The substitute's operating range of -30°C to 65°C is narrower than the original -30°C to 85°C specification. Applications requiring operation above 65°C must retain the original part or identify alternative sources.

Electrical Life Enhancement: The substitute provides 50,000 electrical cycles versus 25,000 cycles in the original, offering superior longevity in high-cycle applications.

Product Status: The substitute is active production status, ensuring ongoing availability and supply chain stability compared to the obsolete original.

Frequently Asked Questions (FAQ)

Q: Can the C&K 8261LH9A3QE2 directly replace the MB2085SS2W30-BA without PCB modification?

A: Yes. Both components feature identical through-hole, right-angle mounting with PC pin termination. No PCB redesign is required for physical installation.

Q: What is the significance of the 5V AC voltage difference between the two parts?

A: The 125V to 120V reduction represents standard industrial tolerance. Applications operating at nominal 120V AC utility voltage will experience no functional impact. Applications specifically designed for 125V operation should verify that the 4% reduction does not affect system performance.

Q: Does the narrower temperature range of the substitute affect compatibility?

A: The substitute operates from -30°C to 65°C versus the original -30°C to 85°C. If your application requires operation above 65°C, the substitute is not suitable. For applications within the -30°C to 65°C range, the substitute is fully compatible.

Q: Why does the substitute have higher electrical life ratings?

A: The C&K 8261LH9A3QE2 is rated for 50,000 electrical cycles compared to 25,000 cycles in the original. This represents improved component design and does not create compatibility issues; it provides additional operational margin.

Q: Are there packaging differences between the original and substitute?

A: The original MB2085SS2W30-BA is specified with standard packaging, while the C&K 8261LH9A3QE2 is supplied in tray packaging. This affects receiving and storage procedures but does not impact component functionality or PCB installation.

Q: What compliance certifications apply to both parts?

A: Both components are ROHS3 compliant and carry MSL rating 1 (Unlimited moisture sensitivity level). Both are classified under ECCN EAR99 and HTSUS 8536.50.9035 for regulatory and tariff purposes.