MB2011SD3G01-BA Equivalent & Substitute Parts

Part Overview

The MB2011SD3G01-BA is an obsolete pushbutton switch manufactured by NKK Switches, featuring SPDT (Single Pole Double Throw) circuitry with a 0.4VA current rating at 28V. This component is designed for panel-mounted applications requiring momentary operation with IP67 ingress protection and epoxy-sealed terminals. Due to its obsolete product status, identifying functionally equivalent alternatives is necessary for ongoing system maintenance and new design implementations.

Substiute Parts

MB2011SD3G01-BA

NKK SwitchesIn Stock: 823MB2011SD3G01-BA Datasheet

Current PartRFQ

1977737-2

TE Connectivity ALCOSWITCH SwitchesIn Stock: 11241977737-2 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MB2011SD3G01-BA 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 Type: Panel Mount, Rear configuration is required for mechanical compatibility.

Termination Style: Solder Lug termination ensures compatibility with existing PCB layouts.

Voltage and Current Ratings: The substitute must support the application's electrical requirements. The MB2011SD3G01-BA operates at 28V with 0.4VA capacity. Substitute parts must meet or exceed these specifications to ensure safe operation.

Regulatory Compliance: RoHS3 compliance is required for environmental and regulatory alignment.

The substitute part 1977737-2 (TE Connectivity ALCOSWITCH Switches) meets the core functional requirements: SPDT circuit, momentary operation, panel-mount rear configuration, solder lug termination, and RoHS3 compliance. However, electrical parameter differences exist and must be evaluated for specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The 1977737-2 is functionally equivalent to the MB2011SD3G01-BA for applications requiring SPDT momentary pushbutton switches with panel-mount rear configuration and solder lug termination.

Electrical Compatibility: The 1977737-2 supports 30V DC operation, which exceeds the MB2011SD3G01-BA's 28V requirement. However, the current rating differs: 1977737-2 is rated for 60mA DC, while the original part supports 0.4VA (approximately 400mA at 1V). Applications requiring currents above 60mA must use the original MB2011SD3G01-BA or identify alternative substitutes with higher current capacity.

Temperature Range: The 1977737-2 operates from -20°C to 80°C, compared to the original -30°C to 85°C range. Applications requiring operation below -20°C or above 80°C must use the original part.

Regulatory Status: Both parts are RoHS3 compliant, ensuring environmental regulation alignment. The 1977737-2 is currently active in production, providing supply chain continuity compared to the obsolete MB2011SD3G01-BA.

Mechanical Compatibility: Both parts feature identical mounting type and termination style, ensuring direct mechanical and electrical integration into existing designs.

Frequently Asked Questions (FAQ)

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

A: Direct replacement is possible only when application current requirements do not exceed 60mA DC and operating temperature remains within -20°C to 80°C. Applications requiring higher current capacity or extended temperature operation require the original part or alternative substitutes.

Q: What is the primary difference between these two switches?

A: The primary difference is current rating capacity. The MB2011SD3G01-BA supports 0.4VA (AC/DC), while the 1977737-2 is limited to 60mA DC. Both maintain identical circuit configuration (SPDT), switch function (momentary), and mounting specifications.

Q: Are both parts RoHS3 compliant?

A: Yes, both the MB2011SD3G01-BA and 1977737-2 are RoHS3 compliant, meeting environmental and regulatory requirements for electronic component manufacturing.

Q: Does the 1977737-2 support AC operation?

A: The 1977737-2 is rated for DC operation only at 60mA. The original MB2011SD3G01-BA supports both AC and DC at 0.4VA. Applications requiring AC operation must use the original part.

Q: What packaging is available for the 1977737-2?

A: The 1977737-2 is supplied in bulk packaging, compared to the original part's standard packaging configuration.