MB2011SS1G01-BE Equivalent & Substitute Parts

Part Overview

The MB2011SS1G01-BE is a pushbutton switch manufactured by NKK Switches, featuring SPDT (Single Pole Double Throw) circuit configuration with 0.4VA rating at 28V. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing maintenance, repair, and redesign applications. The switch is designed for panel-mount rear installation with solder lug termination and yellow actuator marking.

Substiute Parts

MB2011SS1G01-BE

NKK SwitchesIn Stock: 898MB2011SS1G01-BE Datasheet

Current PartRFQ

MB2011SD3G01-BE

NKK SwitchesIn Stock: 799MB2011SD3G01-BE Datasheet

SimilarRFQ

1977737-2

TE Connectivity ALCOSWITCH SwitchesIn Stock: 11241977737-2 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MB2011SS1G01-BE is determined by the following critical parameters:

Primary Compatibility Criteria:

• Circuit configuration (SPDT)
• Switch function (On-Mom momentary operation)
• Mounting type (Panel Mount, Rear)
• Termination style (Solder Lug)
• Panel cutout dimensions (Circular 6.50mm)

Electrical Compatibility Criteria:

• Voltage rating minimum: 28V DC/AC
• Current rating minimum: 0.4VA
• Electrical life minimum: 50,000 cycles

Environmental & Compliance Criteria:

• Operating temperature range overlap
• RoHS3 compliance
• Mechanical life consideration for application duty cycle

Two substitute parts meet these criteria with varying degrees of parameter alignment.

Parameter Comparison

Engineering Selection Recommendations

MB2011SD3G01-BE (NKK Switches): This substitute provides the closest electrical and mechanical alignment with the main part. Both components share identical voltage ratings (28V AC/DC), current rating (0.4VA), circuit configuration (SPDT), mounting type, termination style, and panel cutout dimensions. The primary difference is reduced mechanical life (50,000 cycles versus 100,000 cycles) and the addition of IP67 ingress protection. This part is suitable for applications where the original 100,000-cycle mechanical life specification is not a binding requirement. Both parts are obsolete and ROHS3 compliant.

1977737-2 (TE Connectivity ALCOSWITCH): This substitute meets core functional requirements (SPDT, On-Mom, Panel Mount, Solder Lug termination) and maintains ROHS3 compliance. However, it presents the following parameter deviations: current rating is reduced to 60mA DC (versus 0.4VA AC/DC), voltage rating is 30V DC only (no AC rating specified), operating temperature range is narrower (-20°C to 80°C versus -30°C to 85°C), and panel cutout dimensions are not specified. This part is currently active in production. Selection of this substitute requires verification that the application operates within 60mA DC at 30V DC maximum and does not require AC voltage operation or extended temperature range operation.

Frequently Asked Questions (FAQ)

Q: Can MB2011SD3G01-BE be used as a direct replacement for MB2011SS1G01-BE?

A: Yes, with one consideration. The MB2011SD3G01-BE is mechanically and electrically compatible for panel-mount rear installation with identical voltage and current ratings. The mechanical life specification is reduced from 100,000 to 50,000 cycles. If your application duty cycle does not exceed 50,000 actuations, this part is a direct substitute. If your application requires 100,000-cycle mechanical life, this part is not suitable.

Q: What are the limitations of using 1977737-2 as a substitute?

A: The 1977737-2 has three significant limitations: (1) Current rating is 60mA DC, which is substantially lower than the 0.4VA (approximately 400mA at 28V) rating of the original part—this part is only suitable for low-current DC applications; (2) No AC voltage rating is specified, so AC operation is not supported; (3) Operating temperature range is -20°C to 80°C, which does not cover the full -30°C to 85°C range of the original part. Use this part only if your application operates within these constraints.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. Both MB2011SD3G01-BE and 1977737-2 are ROHS3 compliant, matching the compliance status of the main part MB2011SS1G01-BE.

Q: Does the IP67 rating on MB2011SD3G01-BE affect compatibility?

A: No. The IP67 ingress protection rating (dust tight, waterproof) on MB2011SD3G01-BE is an additional feature that does not affect electrical or mechanical compatibility. If your application does not require environmental sealing, this feature is neutral. If your application requires environmental protection, this feature is beneficial.

Q: What is the panel cutout requirement for these switches?

A: The main part and MB2011SD3G01-BE both require a circular 6.50mm diameter panel cutout. The 1977737-2 does not specify panel cutout dimensions, so physical verification is required before installation.