MB2011SS1G01-BC Equivalent & Substitute Parts

Part Overview

The MB2011SS1G01-BC is an NKK Switches pushbutton switch with SPDT (Single Pole Double Throw) circuit configuration, rated for 0.4VA at 28V AC/DC. This component features a red round button actuator with solder lug termination and is designed for panel mount, rear installation. The product 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

MB2011SS1G01-BC

NKK SwitchesIn Stock: 770MB2011SS1G01-BC Datasheet

Current PartRFQ

1977737-2

TE Connectivity ALCOSWITCH SwitchesIn Stock: 11241977737-2 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

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

• Circuit Configuration: SPDT topology is mandatory for functional equivalence
• Switch Function: On-Momentary operation must be maintained
• Mounting Type: Panel Mount, Rear installation is required
• Termination Style: Solder Lug connection is specified
• Voltage Rating: Substitute must support minimum 28V DC operation
• Current Capacity: Substitute must handle the application's current requirements
• Electrical Life: Minimum 50,000 cycles required

The substitute part 1977737-2 (TE Connectivity ALCOSWITCH Switches) meets these core substitution criteria. Both components share identical circuit configuration (SPDT), switch function (On-Momentary), mounting type (Panel Mount, Rear), termination style (Solder Lug), and electrical life rating (50,000 cycles). The substitute's 30V DC rating exceeds the 28V requirement, and its 60mA DC current capacity is suitable for applications within this voltage and current envelope.

Parameter Comparison

Engineering Selection Recommendations

The 1977737-2 is a direct functional substitute for the MB2011SS1G01-BC based on matching circuit topology, switch operation, mounting configuration, and termination method. Both components are ROHS3 compliant and rated for 50,000 electrical cycles.

The substitute part carries Active product status, ensuring continued availability and supply chain stability compared to the obsolete MB2011SS1G01-BC. The 1977737-2's 30V DC rating provides adequate margin above the 28V requirement. The operating temperature range of -20°C to 80°C is slightly narrower than the original part; applications requiring operation below -20°C or above 80°C must be evaluated against specific system requirements.

Current rating specifications differ in format (0.4VA versus 60mA DC); both values are compatible with low-power control circuit applications typical of pushbutton switch implementations.

Frequently Asked Questions (FAQ)

Q: Can the 1977737-2 directly replace the MB2011SS1G01-BC in existing designs?

A: Yes, provided the application operates within the substitute's specified parameters. Both components share identical SPDT circuit configuration, On-Momentary function, Panel Mount Rear mounting, and Solder Lug termination. Verify that application current and voltage requirements fall within the 1977737-2's 60mA DC and 30V DC ratings, and that operating temperature remains within -20°C to 80°C.

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

A: The primary differences are product status (Obsolete versus Active), operating temperature range (-30°C to 85°C versus -20°C to 80°C), and current rating specification format (0.4VA AC/DC versus 60mA DC). The 1977737-2 provides superior supply chain availability as an active product.

Q: Are there any mechanical compatibility concerns?

A: Both components specify Panel Mount, Rear installation with Solder Lug termination. Panel cutout dimensions are not provided for the 1977737-2; physical verification of mounting hole compatibility is recommended before implementation in existing panel designs.

Q: What compliance certifications apply to both parts?

A: Both the MB2011SS1G01-BC and 1977737-2 are ROHS3 compliant. The MB2011SS1G01-BC is REACH Unaffected; the 1977737-2 shows Vendor Undefined REACH status. Both carry EAR99 ECCN classification and identical HTSUS code 8536.50.9031.