NKK Switches M2012SA2A13 Toggle Switch SPDT Equivalent & Substitute Parts

Part Overview

The NKK Switches M2012SA2A13 is a toggle switch with SPDT (Single Pole Double Throw) configuration rated for 6A at 125V AC and 4A at 30V DC. This through-hole mounted component features a standard round actuator with epoxy sealed terminals and operates across -30°C to 85°C. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	M2012SA2A13
Manufacturer	NKK Switches
Circuit Configuration	SPDT
Switch Function	On-On
Current Rating (AC)	6A
Current Rating (DC)	4A
Voltage Rating (AC)	125V
Voltage Rating (DC)	30V
Mounting Type	Through Hole
Actuator Type	Standard Round
Actuator Length	12.28mm
Termination Style	PC Pin
Panel Cutout Dimensions	Circular - 6.50mm Dia
Operating Temperature Range	-30°C to 85°C
Electrical Life	25,000 Cycles
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the M2012SA2A13 is determined by the following critical parameters:

Primary Substitution Criteria:

Circuit configuration (SPDT required)
Switch function (On-On operation)
Current and voltage ratings (must meet or exceed AC/DC specifications)
Mounting type (through-hole)
Termination style (PC Pin)
Operating temperature range (-30°C to 85°C)
Panel cutout compatibility (6.50mm circular opening)

Substitution Categories:

Direct Manufacturer Upgrade: MN12SA2A13 from NKK Switches is the manufacturer-recommended successor, maintaining the same electrical specifications and form factor while offering active product status.

Higher Current Rating Substitutes: Parts rated for 5A AC at 120-125V (100AWSP1T1B4VS2QE, 7101SD9V3GE, 7101SD9V3QE, 34ASP13B4V2QT, 34BWSP11B4V2QT) provide equivalent or superior current handling with compatible voltage ratings and mechanical interfaces.

Lower Current Rating Substitutes: Parts rated for 0.4VA at 20V (100SP1T6B12VS2RE, 34ASP11B2V2RT, 34ASP11B4V3RT, 7101SD9V3BE) are suitable only for applications requiring reduced power handling within the 20V envelope.

Parameter Comparison

Parameter	M2012SA2A13 (Main)	MN12SA2A13	100AWSP1T1B4VS2QE	100SP1T6B12VS2RE	34ASP11B4V3RT	34ASP13B4V2QT	34BWSP11B4V2QT	7101SD9V3BE	7101SD9V3GE	7101SD9V3QE
Manufacturer	NKK Switches	NKK Switches	E-Switch	E-Switch	Grayhill Inc.	Grayhill Inc.	Grayhill Inc.	C&K	C&K	C&K
Circuit	SPDT	SPDT	SPDT	SPDT	SPDT	SPDT	SPDT	SPDT	SPDT	SPDT
Switch Function	On-On	On-On	On-On	On-On	On-On	On-On	On-On	On-On	On-On	On-On
Current Rating (AC)	6A	Not Specified	5A	0.4VA	0.4VA	5A	5A	0.4VA	5A	5A
Current Rating (DC)	4A	Not Specified	5A	0.4VA	0.4VA	5A	5A	0.4VA	5A	5A
Voltage Rating (AC)	125V	Not Specified	120V	20V	20V	125V	125V	20V	120V	120V
Voltage Rating (DC)	30V	Not Specified	28V	20V	20V	28V	28V	20V	28V	28V
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Actuator Type	Standard Round	Not Specified	Standard Round	Flat Anti-Rotation	Standard Round	Standard Round	Standard Round	Standard Round	Standard Round	Standard Round
Actuator Length (mm)	12.28	Not Specified	12.70	12.30	10.41	13.97	12.60	12.45	12.45	12.45
Termination Style	PC Pin	PC Pin	PC Pin	PC Pin	PC Pin	PC Pin	PC Pin	PC Pin	PC Pin	PC Pin
Operating Temperature (°C)	-30 to 85	Not Specified	-30 to 85	-30 to 85	-30 to 85	-30 to 85	-30 to 85	-30 to 85	-30 to 85	-30 to 85
Electrical Life (Cycles)	25,000	Not Specified	30,000	40,000	40,000	40,000	50,000	100,000	100,000	100,000
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Tier 1 - Direct Replacement: MN12SA2A13 (NKK Switches) is the manufacturer-recommended upgrade path. This part maintains NKK Switches lineage with active product status and ROHS3 compliance, ensuring continuity in design and supply chain.

Tier 2 - Equivalent Current/Voltage Performance: For applications requiring 5A at 120-125V AC operation, the following parts provide equivalent or superior electrical performance:

100AWSP1T1B4VS2QE (E-Switch): 5A/120V with IP67 ingress protection and 30,000-cycle life
7101SD9V3GE (C&K): 5A/120V with extended 100,000-cycle electrical life
7101SD9V3QE (C&K): 5A/120V with extended 100,000-cycle electrical life
34ASP13B4V2QT (Grayhill Inc.): 5A/125V with 40,000-cycle life
34BWSP11B4V2QT (Grayhill Inc.): 5A/125V with IP67 protection and 50,000-cycle life

All Tier 2 options maintain ROHS3 or RoHS compliance and active product status.

Tier 3 - Reduced Power Applications: For applications operating at 20V or lower with 0.4VA current requirements:

100SP1T6B12VS2RE (E-Switch): 0.4VA/20V with 40,000-cycle life
34ASP11B2V2RT (Grayhill Inc.): 0.4VA/20V with 40,000-cycle life
34ASP11B4V3RT (Grayhill Inc.): 0.4VA/20V with 40,000-cycle life
7101SD9V3BE (C&K): 0.4VA/20V with extended 100,000-cycle life

These parts are not suitable for applications requiring the original 6A/125V specifications.

Frequently Asked Questions (FAQ)

Q: Can I use a lower current-rated substitute in a 6A/125V application? A: No. Parts rated for 0.4VA at 20V (Tier 3) are not electrically compatible with applications requiring 6A at 125V. Substitution must maintain or exceed the original current and voltage ratings for the intended circuit.

Q: What is the difference between the E-Switch 100AWSP1T1B4VS2QE and the C&K 7101SD9V3GE? A: Both provide 5A/120V operation with SPDT On-On configuration. The E-Switch part offers IP67 ingress protection and 30,000-cycle life, while the C&K part provides extended 100,000-cycle electrical life without ingress protection. Selection depends on environmental and durability requirements.

Q: Are all substitute parts RoHS compliant? A: All listed substitutes are either ROHS3 Compliant or RoHS Compliant. The original M2012SA2A13 is ROHS3 Compliant. Verify specific RoHS revision requirements for your application.

Q: Does actuator length variation affect mechanical compatibility? A: Actuator length ranges from 10.41mm to 13.97mm across substitutes. Verify panel cutout depth and actuator engagement requirements in your mechanical design. The original part specifies 12.28mm; parts within ±1.5mm (10.78mm to 13.78mm) typically offer compatible panel mounting.

Q: What is the advantage of C&K 7101 series parts? A: C&K 7101 series toggle switches offer extended electrical life (100,000 cycles) compared to the original 25,000-cycle rating, providing superior durability for high-cycle applications. Both 7101SD9V3GE and 7101SD9V3QE maintain 5A/120V specifications with ROHS3 compliance.

Q: Can I substitute the M2012SA2A13 with a Grayhill 34BWSP11B4V2QT? A: Yes, for applications requiring 5A/125V operation. The 34BWSP11B4V2QT provides equivalent current and voltage ratings with enhanced IP67 ingress protection and extended 50,000-cycle life. Verify actuator length (12.60mm vs. 12.28mm original) for panel mounting compatibility.

Q: What does "On-On" switch function mean? A: On-On indicates that both switch positions are active (conducting). In SPDT configuration, the common terminal connects to either the normally-open or normally-closed contact depending on actuator position. This differs from On-Off switches where one position is non-conducting.

Q: Are there inventory considerations for substitute selection? A: Current inventory levels vary: MN12SA2A13 (1054 pcs), 100AWSP1T1B4VS2QE (770 pcs), 7101SD9V3GE (1123 pcs), and 7101SD9V3BE (3094 pcs) offer substantial stock. Verify availability with your supplier for production timelines.

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