MB2011SD3G01 Equivalent & Substitute Parts

Part Overview

The MB2011SD3G01 is a pushbutton switch manufactured by NKK Switches, featuring SPDT (Single Pole Double Throw) circuitry with momentary operation. This component is rated for 0.4VA at 28V AC/DC with panel mount rear configuration and solder lug termination. The part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system maintenance and new design implementations where this switch type is required.

Substiute Parts

MB2011SD3G01

NKK SwitchesIn Stock: 1195MB2011SD3G01 Datasheet

Current PartRFQ

1977737-2

TE Connectivity ALCOSWITCH SwitchesIn Stock: 11241977737-2 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MB2011SD3G01 is determined by the following critical parameters:

• Circuit Configuration: SPDT topology is mandatory for functional equivalence
• Switch Function: Momentary (On-Mom) operation must be maintained
• Mounting Interface: Panel mount rear configuration with solder lug termination
• Electrical Ratings: Current and voltage ratings must meet or exceed the original specification
• Ingress Protection: IP67 rating provides environmental sealing requirements
• Compliance: RoHS3 compliance ensures regulatory alignment

The substitute part 1977737-2 (TE Connectivity ALCOSWITCH Switches) satisfies the core functional requirements of SPDT momentary operation with panel mount rear configuration and solder lug termination. However, specific parameter differences exist that must be evaluated for application compatibility.

Parameter Comparison

Engineering Selection Recommendations

The 1977737-2 from TE Connectivity ALCOSWITCH Switches is an active product with current manufacturing support, providing supply chain continuity for the obsolete MB2011SD3G01. Both components maintain ROHS3 compliance and identical electrical life ratings of 50,000 cycles.

Selection of the 1977737-2 as a substitute is appropriate when the application current requirement does not exceed 60mA DC. The substitute part provides a higher DC voltage rating (30V versus 28V), which offers improved margin in voltage-constrained applications. The operating temperature range of the substitute (-20°C to 80°C) is narrower than the original part (-30°C to 85°C); applications requiring operation below -20°C or above 80°C must retain the original MB2011SD3G01 or identify alternative sources.

Frequently Asked Questions (FAQ)

Q: Can the 1977737-2 directly replace the MB2011SD3G01 in all applications?

A: Direct replacement is valid for applications where the load current does not exceed 60mA DC. The original MB2011SD3G01 is rated for 0.4VA, which accommodates higher current levels. Verify your application current requirement before substitution.

Q: What are the key differences between these two switches?

A: The primary differences are current rating (0.4VA versus 60mA), operating temperature range (-30°C to 85°C versus -20°C to 80°C), and product status (obsolete versus active). Both maintain identical SPDT momentary operation, panel mount rear configuration, solder lug termination, and 50,000 cycle electrical life.

Q: Is the 1977737-2 suitable for low-temperature applications?

A: The 1977737-2 is rated for operation down to -20°C. Applications requiring operation below -20°C must use the original MB2011SD3G01 or identify alternative components with extended low-temperature specifications.

Q: Are both parts RoHS compliant?

A: Yes, both the MB2011SD3G01 and 1977737-2 are ROHS3 compliant, ensuring regulatory alignment for applications subject to RoHS requirements.

Q: What is the panel cutout dimension for the 1977737-2?

A: The panel cutout dimension for the 1977737-2 is not provided in the available technical data. Verify mechanical compatibility with your panel assembly before implementation.