MB2011SD3G01/328 Equivalent & Substitute Parts

Part Overview

The MB2011SD3G01/328 is an obsolete pushbutton switch manufactured by NKK Switches, featuring SPDT (Single Pole Double Throw) circuit configuration with On-Momentary switch function. This panel-mount rear component is rated for 0.4VA at 28V AC/DC operation with IP67 ingress protection. Due to its obsolete product status, identifying functionally compatible substitute components is essential for system maintenance, repair, and redesign applications where continued supply cannot be guaranteed.

Substiute Parts

MB2011SD3G01/328

NKK SwitchesIn Stock: 880MB2011SD3G01/328 Datasheet

Current PartRFQ

1977737-2

TE Connectivity ALCOSWITCH SwitchesIn Stock: 11241977737-2 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MB2011SD3G01/328 is determined by the following critical parameters:

Circuit & Function Compatibility: The substitute must maintain SPDT circuit configuration with On-Momentary switch function to preserve electrical behavior in the application.

Electrical Ratings: The substitute must support the application's voltage and current requirements. The original part operates at 28V AC/DC with 0.4VA capacity. Substitute parts must meet or exceed these electrical specifications.

Mechanical Interface: Panel mount rear configuration with solder lug termination and plunger actuator type are required for physical and electrical integration.

Environmental & Compliance: Operating temperature range, ingress protection rating, and RoHS/REACH compliance status determine suitability for the intended operating environment and regulatory requirements.

The identified substitute part 1977737-2 (TE Connectivity ALCOSWITCH Switches) satisfies the core substitution criteria: identical SPDT circuit, On-Momentary function, panel mount rear configuration, solder lug termination, and plunger actuator type. Both parts maintain ROHS3 compliance and 50,000 electrical life cycles.

Parameter Comparison

Engineering Selection Recommendations

For DC-Only Applications: The 1977737-2 substitute is suitable for applications operating exclusively at DC voltages within the 60mA current limit and 30V maximum rating. The active product status ensures continued availability and supply chain reliability compared to the obsolete MB2011SD3G01/328.

For AC/DC or High-Current Applications: The original MB2011SD3G01/328 specifications (0.4VA AC/DC rating) cannot be fully replicated by the 1977737-2 substitute, which is DC-rated only at 60mA. Alternative substitutes or design modification may be required for applications requiring AC operation or current levels exceeding 60mA.

Temperature Considerations: Applications operating below -20°C or above 80°C exceed the substitute's rated range. Verify that the application's actual operating temperature envelope falls within -20°C to 80°C before selecting the 1977737-2.

Compliance & Supply: Both parts maintain ROHS3 compliance. The substitute's active product status provides superior long-term availability compared to the obsolete original part.

Frequently Asked Questions (FAQ)

Q: Can the 1977737-2 directly replace the MB2011SD3G01/328 in all applications?

A: No. While both parts share identical SPDT circuit, On-Momentary function, panel mount configuration, and solder lug termination, the substitute is DC-rated at 60mA maximum, whereas the original supports 0.4VA at both AC and DC. Applications requiring AC operation or currents exceeding 60mA cannot use this substitute.

Q: What is the primary difference in electrical ratings between these parts?

A: The MB2011SD3G01/328 is rated 0.4VA at 28V AC/DC, supporting both alternating and direct current. The 1977737-2 is rated 60mA DC at 30V maximum, supporting direct current only. The substitute's DC voltage rating (30V) exceeds the original's (28V), but its current capacity (60mA) is significantly lower than the original's 0.4VA capacity.

Q: Are there temperature range differences?

A: Yes. The original operates from -30°C to 85°C, while the substitute operates from -20°C to 80°C. The substitute has a narrower operating window. Confirm that your application's temperature requirements fall within -20°C to 80°C before substitution.

Q: Do both parts have identical mechanical interfaces?

A: Yes. Both parts feature panel mount rear configuration, solder lug termination, and plunger actuator type, ensuring mechanical and electrical interface compatibility.

Q: What is the significance of the product status difference?

A: The MB2011SD3G01/328 is obsolete, meaning NKK Switches no longer manufactures it. The 1977737-2 is active, meaning TE Connectivity continues production. For long-term supply chain reliability, the active substitute is preferable, provided electrical and environmental specifications match your application requirements.

Q: Can I use the 1977737-2 in an AC application?

A: No. The 1977737-2 is DC-rated only. The original MB2011SD3G01/328 supports both AC and DC operation at 28V. If your application requires AC operation, this substitute is not suitable.