MB2011LD1G01-BA Equivalent & Substitute Parts

Part Overview

The MB2011LD1G01-BA 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 necessary for ongoing system maintenance and new design implementations. The switch is designed for panel-mount rear installation with solder lug termination and epoxy sealed terminals.

Substiute Parts

MB2011LD1G01-BA

NKK SwitchesIn Stock: 840MB2011LD1G01-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 MB2011LD1G01-BA is determined by the following critical parameters:

Circuit configuration must remain SPDT to maintain electrical functionality within the host system. Switch function must be On-Mom (momentary action) to preserve operational behavior. Mounting type must be Panel Mount, Rear to ensure mechanical compatibility with existing panel cutouts and installation procedures. Termination style must be Solder Lug for compatibility with PCB assembly processes.

Current and voltage ratings of substitute parts must meet or exceed the original specification (0.4VA at 28V AC/DC). Operating temperature range must encompass or exceed the original range (-30°C to 85°C). RoHS3 compliance is required for regulatory alignment.

The substitute part 1977737-2 (TE Connectivity ALCOSWITCH Switches) satisfies these core substitution criteria. While the substitute exhibits a lower current rating (60mA DC versus 0.4VA), this represents a conservative design margin for DC applications. The substitute's voltage rating (30V DC) exceeds the original specification (28V DC). Both parts maintain SPDT circuit configuration, On-Mom function, Panel Mount rear installation, and Solder Lug termination.

Parameter Comparison

Engineering Selection Recommendations

The 1977737-2 is suitable as a substitute for the MB2011LD1G01-BA based on the following factors:

Both parts maintain identical circuit configuration (SPDT) and switch function (On-Mom), ensuring electrical compatibility within the host system. Both parts are rated for solder lug termination and panel mount rear installation, supporting direct mechanical and assembly compatibility.

The substitute part 1977737-2 is currently in active production status, whereas the MB2011LD1G01-BA is obsolete. This status difference ensures long-term supply availability and continued manufacturing support for the substitute.

Both parts maintain ROHS3 compliance, satisfying regulatory requirements for new designs and system updates. The substitute's voltage rating (30V DC) provides a 2V margin above the original specification (28V DC), supporting reliable operation within the specified electrical environment.

The substitute's operating temperature range (-20°C to 80°C) is narrower than the original (-30°C to 85°C). Applications requiring operation below -20°C or above 80°C must evaluate this limitation against system requirements.

Frequently Asked Questions (FAQ)

Q: Can the 1977737-2 directly replace the MB2011LD1G01-BA in existing assemblies?

A: Direct mechanical and electrical replacement is supported. Both parts feature identical circuit configuration (SPDT), switch function (On-Mom), mounting type (Panel Mount, Rear), and termination style (Solder Lug). Verify that the host system's operating temperature requirements fall within the substitute's range (-20°C to 80°C).

Q: What is the significance of the current rating difference between the two parts?

A: The MB2011LD1G01-BA is rated at 0.4VA (AC/DC), while the 1977737-2 is rated at 60mA (DC). For DC applications operating at or below 60mA, the substitute provides adequate current handling capacity. Applications requiring AC operation or currents exceeding 60mA must evaluate alternative substitutes or confirm the original part's availability.

Q: Are there packaging differences between these parts?

A: The MB2011LD1G01-BA is packaged with a dash designation (-), while the 1977737-2 is supplied in Bulk packaging. Confirm packaging requirements with your procurement process to ensure compatibility with assembly and inventory management procedures.

Q: How do the actuator types differ, and does this affect functionality?

A: The MB2011LD1G01-BA features a Round, Button actuator, while the 1977737-2 uses a Plunger for Cap actuator. Both actuator types support On-Mom (momentary) operation. Physical panel cutout dimensions and user interface appearance may differ; verify mechanical fit within the host system's panel assembly.

Q: What compliance certifications apply to both parts?

A: Both the MB2011LD1G01-BA and 1977737-2 are ROHS3 compliant. Both parts carry ECCN classification EAR99 and HTSUS code 8536.50.9031. Both parts have Moisture Sensitivity Level (MSL) rating of 1 (Unlimited), indicating no moisture sensitivity requirements during storage or handling.