MB2011LS1G01-BA Equivalent & Substitute Parts

Part Overview

The MB2011LS1G01-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

MB2011LS1G01-BA

NKK SwitchesIn Stock: 866MB2011LS1G01-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 MB2011LS1G01-BA is determined by the following critical parameters:

• Circuit configuration must be SPDT
• Switch function must be On-Mom (momentary operation)
• Mounting type must be Panel Mount, Rear
• Termination style must be Solder Lug
• Current rating must support the application requirement (0.4VA minimum)
• Voltage rating must meet or exceed 28V DC/AC
• Electrical life must be rated for 50,000 cycles or greater
• RoHS3 compliance required

The substitute part 1977737-2 (TE Connectivity ALCOSWITCH Switches) meets these core substitution criteria. Both components share identical circuit topology (SPDT), switch function (On-Mom), mounting configuration (Panel Mount, Rear), and termination method (Solder Lug). Both are RoHS3 compliant and rated for 50,000 electrical cycles.

Parameter Comparison

Engineering Selection Recommendations

The 1977737-2 is a functionally equivalent substitute for the MB2011LS1G01-BA based on matching circuit topology, switch function, mounting configuration, and termination method. Both components are RoHS3 compliant and rated for identical electrical cycle life.

The substitute part is currently in active production status, ensuring long-term availability and supply chain continuity compared to the obsolete main part. The 1977737-2 provides a 30V DC rating, which exceeds the 28V requirement of the original specification.

Current rating differences exist between the two parts: the main part is rated at 0.4VA (AC/DC) while the substitute is rated at 60mA DC. Application-specific current requirements must be evaluated to confirm compatibility. The substitute part's operating temperature range (-20°C to 80°C) is narrower than the main part (-30°C to 85°C); applications requiring operation below -20°C or above 80°C require additional evaluation.

Frequently Asked Questions (FAQ)

Q: Can the 1977737-2 directly replace the MB2011LS1G01-BA in all applications?

A: Direct replacement is possible when the application current requirement does not exceed 60mA DC and the operating temperature remains within -20°C to 80°C. Both components share identical SPDT circuit configuration, On-Mom switch function, Panel Mount Rear mounting, and Solder Lug termination. Verify current and temperature specifications against your application requirements before implementation.

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

A: The primary differences are current rating (0.4VA AC/DC vs. 60mA DC), operating temperature range (-30°C to 85°C vs. -20°C to 80°C), and product status (Obsolete vs. Active). The substitute part features a plunger actuator type compared to the round button actuator of the main part. Both parts meet RoHS3 compliance and 50,000 cycle electrical life requirements.

Q: Is the 1977737-2 available in the same packaging as the MB2011LS1G01-BA?

A: The substitute part is supplied in Bulk packaging. Panel mount rear installation and solder lug termination are identical between both components, ensuring mechanical and electrical compatibility in the circuit board layout.

Q: What compliance certifications apply to both parts?

A: Both the MB2011LS1G01-BA and 1977737-2 are RoHS3 compliant. Both are classified under HTSUS code 8536.50.9031 and ECCN EAR99. The main part carries REACH Unaffected status; the substitute part's REACH status is Vendor Undefined.