MB2065SD3G01-CC Equivalent & Substitute Parts

Part Overview

The MB2065SD3G01-CC is a pushbutton switch manufactured by NKK Switches, classified as SPDT (Single Pole Double Throw) with On-On switching function. This component is rated for 0.4VA at 28V AC/DC operation and features panel mount rear installation with IP67 ingress protection. The product is currently obsolete, making identification of functionally equivalent alternatives necessary for system maintenance, repair, and redesign applications where continued supply cannot be guaranteed.

Key Parameters

Parameter	MB2065SD3G01-CC
Manufacturer	NKK Switches
Circuit Configuration	SPDT
Switch Function	On-On
Current Rating	0.4VA (AC/DC)
Voltage Rating - AC	28V
Voltage Rating - DC	28V
Mounting Type	Panel Mount, Rear
Actuator Type	Round, Button
Termination Style	Solder Lug
Ingress Protection	IP67
Operating Temperature Range	-30°C to 85°C
Mechanical Life	50,000 Cycles
Electrical Life	50,000 Cycles
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

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

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

Electrical Ratings: The substitute must support the operating voltage (28V AC/DC) and current requirements (0.4VA minimum). Higher voltage and current ratings are acceptable as they provide operational margin.

Mechanical Interface: Panel mount rear installation with solder lug termination is required for physical and electrical integration.

Environmental Compliance: RoHS3 compliance is mandatory for regulatory alignment with the original component.

The identified substitute part 1977739-1 (TE Connectivity ALCOSWITCH Switches) satisfies these core substitution criteria through equivalent circuit topology, compatible mounting configuration, and matching termination style, despite differences in absolute electrical ratings and operational temperature range.

Parameter Comparison

Parameter	MB2065SD3G01-CC (NKK)	1977739-1 (TE Connectivity)
Circuit Configuration	SPDT	SPDT
Switch Function	On-On	On-On
Current Rating	0.4VA (AC/DC)	3A (AC)
Voltage Rating - AC	28V	125V
Mounting Type	Panel Mount, Rear	Panel Mount, Rear
Actuator Type	Round, Button	Plunger for Cap
Termination Style	Solder Lug	Solder Lug
Operating Temperature Range	-30°C to 85°C	-20°C to 80°C
Electrical Life	50,000 Cycles	25,000 Cycles
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active

Engineering Selection Recommendations

The 1977739-1 substitute is suitable for applications where the MB2065SD3G01-CC is no longer available. Both components are ROHS3 compliant and maintain identical circuit topology and mounting configuration.

The substitute provides higher electrical ratings (3A at 125V AC versus 0.4VA at 28V AC/DC), which accommodates the original application requirements with operational margin. The substitute is currently in active production status, ensuring supply continuity.

Physical actuator differences (round button versus plunger for cap) may require panel interface verification to confirm mechanical compatibility with existing enclosure cutouts and operator interaction requirements.

The substitute exhibits lower electrical life (25,000 cycles versus 50,000 cycles), which should be evaluated against application duty cycle expectations. Operating temperature range is slightly narrower (-20°C to 80°C versus -30°C to 85°C), requiring confirmation that the application environment remains within these bounds.

Frequently Asked Questions (FAQ)

Q: Can 1977739-1 directly replace MB2065SD3G01-CC in my application?

A: Direct replacement is possible if the application operates within the substitute's electrical and environmental specifications. Verify that operating voltage does not exceed 125V AC, current draw remains below 3A, and ambient temperature stays within -20°C to 80°C. Confirm mechanical fit with the panel cutout and actuator interface.

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

A: The primary differences are electrical ratings (substitute is rated higher), actuator style (round button versus plunger), electrical life (50,000 versus 25,000 cycles), and operating temperature range (substitute is narrower). Both maintain SPDT On-On configuration and solder lug termination.

Q: Is the substitute compatible with my panel cutout?

A: Panel cutout dimensions for the substitute are not specified in available data. The original MB2065SD3G01-CC requires a circular 6.50mm diameter cutout. Physical verification of the substitute's panel cutout requirements is necessary before installation.

Q: Are both components RoHS compliant?

A: Yes, both MB2065SD3G01-CC and 1977739-1 are ROHS3 compliant.

Q: What is the inventory status of these parts?

A: MB2065SD3G01-CC is obsolete with 928 pieces available in current stock. 1977739-1 is active production with 964 pieces in current stock.

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