MB2085SD3W01 Equivalent & Substitute Parts

Part Overview

The MB2085SD3W01 is a DPDT pushbutton switch manufactured by NKK Switches, rated for 6A at 125V AC and 3A at 30V DC. This component features a panel mount rear configuration with solder lug termination and IP67 ingress protection. The product is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing maintenance, repair, and design continuity in applications requiring DPDT switching functionality.

Substiute Parts

MB2085SD3W01

NKK SwitchesIn Stock: 1080MB2085SD3W01 Datasheet

Current PartRFQ

MB2085SS1W01

NKK SwitchesIn Stock: 1374MB2085SS1W01 Datasheet

SimilarRFQ

8646AKB

APEM Inc.In Stock: 8418646AKB Datasheet

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MPA206N

TE Connectivity ALCOSWITCH SwitchesIn Stock: 1576MPA206N Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the MB2085SD3W01 is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

• Circuit configuration: DPDT
• Switch function: On-On
• AC voltage rating: 125V minimum
• AC current rating: 6A minimum
• DC voltage rating: 30V minimum
• Mounting type: Panel Mount, Rear
• Termination style: Solder Lug
• Panel cutout diameter: 6.50mm (or compatible within mechanical tolerance)

Acceptable Variation Parameters:

• DC current rating: May exceed 3A (higher ratings are acceptable)
• Electrical life cycles: May exceed 25,000 cycles
• Mechanical life cycles: May exceed 50,000 cycles
• Operating temperature range: May exceed -30°C to 85°C
• Ingress protection: May exceed IP67

The substitute parts identified below meet or exceed all critical matching parameters while maintaining functional and mechanical compatibility with the original MB2085SD3W01 specification.

Parameter Comparison

Engineering Selection Recommendations

MB2085SS1W01 (NKK Switches): This part is an exact electrical and mechanical equivalent to the MB2085SD3W01, differing only in packaging (bulk versus standard). Both are NKK Switches MB2000 series components with identical electrical ratings and mechanical specifications. Selection of this part is appropriate for direct replacement where inventory availability is a consideration. Both parts share obsolete product status.

8646AKB (APEM Inc.): This substitute provides enhanced performance characteristics, including higher DC current rating (4A versus 3A), extended operating temperature range (-40°C to 85°C), and increased electrical life (30,000 cycles). The part maintains all critical electrical and mechanical parameters. Product status is active, ensuring ongoing availability. Panel cutout diameter matches at 6.50mm.

MPA206N (TE Connectivity ALCOSWITCH Switches): This substitute meets all critical electrical parameters with 6A AC and 4A DC current ratings. Electrical life is significantly higher at 50,000 cycles. The panel cutout diameter is 6.35mm, which represents a minor mechanical variation requiring verification of panel compatibility. DC voltage rating is 28V, which is within acceptable tolerance of the 30V specification. Product status is active with established supply chain availability.

Frequently Asked Questions (FAQ)

Q: Can MB2085SS1W01 be used as a direct replacement for MB2085SD3W01?

A: Yes. Both parts are NKK Switches MB2000 series components with identical electrical ratings (6A AC at 125V, 3A DC at 30V), circuit configuration (DPDT On-On), mechanical mounting (panel mount rear), and termination style (solder lug). The only difference is packaging format.

Q: What is the significance of the panel cutout diameter difference in MPA206N?

A: The MPA206N has a 6.35mm panel cutout diameter compared to 6.50mm for the original part. This 0.15mm difference is minor but requires physical verification that the existing panel mounting hole accommodates the substitute component without modification.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. MB2085SS1W01, 8646AKB, and MPA206N are all ROHS3 compliant, matching the compliance status of the original MB2085SD3W01.

Q: Which substitute part offers the longest operational life?

A: MPA206N provides the highest electrical life rating at 50,000 cycles, compared to 25,000 cycles for the original part and MB2085SS1W01, and 30,000 cycles for 8646AKB.

Q: What is the difference between "Obsolete" and "Active" product status?

A: Obsolete products (MB2085SD3W01 and MB2085SS1W01) are no longer manufactured and have limited inventory availability. Active products (8646AKB and MPA206N) are currently manufactured and have established supply chains, making them more suitable for long-term design continuity.

Q: Can MPA206N be used in applications requiring 30V DC operation?

A: MPA206N is rated for 28V DC, which is 2V below the original 30V specification. For applications operating at or near 30V DC, this represents a reduced safety margin and requires circuit analysis to confirm compatibility.

Q: Do all substitute parts have the same ingress protection rating as the original?

A: No. The original MB2085SD3W01 specifies IP67 (dust tight, waterproof). MB2085SS1W01 does not specify ingress protection. 8646AKB specifies environment sealed. MPA206N does not specify ingress protection. For applications requiring IP67 protection, the original specification or 8646AKB should be prioritized.