MB2065SD3G01-BA Equivalent & Substitute Parts

Part Overview

The MB2065SD3G01-BA is an SPDT pushbutton switch manufactured by NKK Switches, designed for panel mount rear installation with a rated capacity of 0.4VA at 28V. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system maintenance, repair, and redesign applications. The switch features epoxy sealed terminals, IP67 ingress protection, and solder lug termination suitable for industrial control and instrumentation applications.

Substiute Parts

MB2065SD3G01-BA

NKK SwitchesIn Stock: 1139MB2065SD3G01-BA Datasheet

Current PartRFQ

1977739-1

TE Connectivity ALCOSWITCH SwitchesIn Stock: 9851977739-1 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MB2065SD3G01-BA is determined by the following critical parameters:

Circuit Configuration: SPDT topology is mandatory for functional equivalence in On-On switching applications.

Termination Style: Solder lug termination is required to maintain compatibility with existing PCB or panel wiring configurations.

Mounting Type: Panel mount rear installation is necessary for mechanical fit within the enclosure.

Voltage and Current Ratings: The substitute must support the application voltage (28V AC/DC) and current requirements (0.4VA minimum). Higher ratings are acceptable provided they do not introduce incompatibility with the circuit design.

Environmental Compliance: RoHS3 compliance is required for regulatory alignment with current manufacturing standards.

The identified substitute part 1977739-1 (TE Connectivity ALCOSWITCH Switches) satisfies these core substitution criteria while offering enhanced electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The MB2065SD3G01-BA is obsolete and no longer available through standard distribution channels. The substitute part 1977739-1 is currently active and available in inventory (964 pcs in stock).

Electrical Compatibility: The 1977739-1 exceeds the voltage and current requirements of the original specification (125V AC vs. 28V AC; 3A vs. 0.4VA), ensuring safe operation within the application circuit. The higher electrical ratings provide margin for circuit variations and component aging.

Mechanical Compatibility: Both parts feature panel mount rear installation with solder lug termination, maintaining compatibility with existing mechanical and electrical interfaces.

Regulatory Compliance: Both parts are ROHS3 compliant, satisfying current manufacturing and environmental standards.

Operational Considerations: The 1977739-1 operates within a slightly narrower temperature range (-20°C to 80°C vs. -30°C to 85°C) and has a lower electrical life rating (25,000 cycles vs. 50,000 cycles). These differences are acceptable for applications operating within standard industrial temperature ranges and moderate duty cycles.

Frequently Asked Questions (FAQ)

Q: Can the 1977739-1 directly replace the MB2065SD3G01-BA in existing designs?

A: Yes. Both parts share identical circuit configuration (SPDT), switch function (On-On), mounting type (panel mount rear), and termination style (solder lug). The 1977739-1 has higher voltage and current ratings, which are compatible with the original 28V, 0.4VA specification.

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

A: The primary differences are manufacturer (NKK Switches vs. TE Connectivity), voltage rating (28V vs. 125V), current rating (0.4VA vs. 3A), actuator type (round button vs. plunger for cap), operating temperature range (-30°C to 85°C vs. -20°C to 80°C), and electrical life (50,000 vs. 25,000 cycles). The 1977739-1 is currently active and available, while the MB2065SD3G01-BA is obsolete.

Q: Are there any application limitations when using the 1977739-1 as a substitute?

A: The 1977739-1 is suitable for applications operating within -20°C to 80°C and requiring up to 25,000 electrical cycles. Applications requiring operation below -20°C or above 80°C, or exceeding 25,000 cycles, should be evaluated against the specific duty cycle and environmental requirements.

Q: Do both parts meet current regulatory requirements?

A: Yes. Both the MB2065SD3G01-BA and 1977739-1 are ROHS3 compliant, meeting current environmental and manufacturing standards.

Q: What is the difference in actuator design between these parts?

A: The MB2065SD3G01-BA features a round button actuator with no marking, while the 1977739-1 uses a plunger-type actuator designed for cap attachment. This difference affects the tactile interface but does not impact electrical function or circuit compatibility.