Basic / Snap Action Switches

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B3 Basic Subminiature Snap-Action Switches

OTTO B3 Basic Subminiature Snap-Action Switches are SPDT, double-break, 2-circuit (Form Z), commercial and military-grade switches that meet all requirements of MIL-PRF-8805/76 (0.200" wide) or MIL-PRF-8805/101. The 0.156" thick components (MIL-PRF-8805/101) feature a minimum of one million mechanical cycles, contact resistance less than 25mΩ, and standard silver with gold contacts. For commercial applications, a variety of contact forms, special forces, and gold plate contacts are available. Most versions are also UL recognized and CSA certified.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (JPY) Filter the results in the table by unit price based on your quantity.	Qty.	Series	Type	Contact Form	Switch Function	Actuator	Current Rating	Voltage Rating AC	Voltage Rating DC	Operating Force	Termination Style	Mounting Style
Basic / Snap Action Switches 8A SPNO-DB PC Pins Low Current MIL B3-21212 OTTO 1: ¥7,077.5 15In Stock	Mfr. Part # B3-21212 Mouser Part # 999-B3-21212	OTTO	Basic / Snap Action Switches 8A SPNO-DB PC Pins Low Current MIL Learn More about OTTO OTTOB3	Datasheet	15In Stock	¥7,077.5 ¥5,308.6 ¥4,526.2 ¥4,285.4 View ¥3,944.9 ¥3,822 ¥3,820.3 Quote	Min.: 1 Mult.: 1	B3	Military Grade Subminiature Basic Switch	SPST-NO		Button	8 A	115 VAC	28 VDC	5 oz	Solder Pin	PCB Mount
Basic / Snap Action Switches 8A SPDT-DB PC Pins High Current MIL B3-21341 OTTO 1: ¥5,818.5 15In Stock	Mfr. Part # B3-21341 Mouser Part # 999-B3-21341	OTTO	Basic / Snap Action Switches 8A SPDT-DB PC Pins High Current MIL Learn More about OTTO OTTOB3	Datasheet	15In Stock	¥5,818.5 ¥4,365.1 ¥3,722.3 ¥3,542.9 View ¥3,243.9 ¥3,141	Min.: 1 Mult.: 1	B3	Military Grade Subminiature Basic Switch	SPDT		Button	8 A	115 VAC	28 VDC	6 oz	Solder Pin	PCB Mount
Basic / Snap Action Switches 8A SPDT-DB Turret 1/8 Low Current MIL B3-22142 OTTO 1: ¥6,536 10In Stock	Mfr. Part # B3-22142 Mouser Part # 999-B3-22142	OTTO	Basic / Snap Action Switches 8A SPDT-DB Turret 1/8 Low Current MIL Learn More about OTTO OTTOB3	Datasheet	10In Stock	¥6,536 ¥4,903.3 ¥4,180.7 ¥3,956.5 View ¥3,642.6 ¥3,529.6 Quote	Min.: 1 Mult.: 1	B3	Subminiature	SPDT	ON - (OFF), OFF - (ON)	Button	8 A	115 VAC	28 VDC	141 gf, 170 gf	Solder Turret	Chassis Mount
Basic / Snap Action Switches 8A SPDT Turret 1/8 Low Current MIL B3-22332 OTTO 1: ¥7,255.2 5In Stock	Mfr. Part # B3-22332 Mouser Part # 999-B3-22332	OTTO	Basic / Snap Action Switches 8A SPDT Turret 1/8 Low Current MIL Learn More about OTTO OTTOB3	Datasheet	5In Stock	¥7,255.2 ¥5,071 ¥4,640.8 ¥4,393.3 View ¥4,042.9 ¥3,918.3 ¥3,916.6 Quote	Min.: 1 Mult.: 1	B3	Military Grade Subminiature Basic Switch	SPDT		Button	8 A	115 VAC	28 VDC	6 oz	Solder Turret	Chassis Mount
Basic / Snap Action Switches 8A SPDT Wire Wrap Low Current MIL B3-24232 OTTO 1: ¥7,614 15In Stock	Mfr. Part # B3-24232 Mouser Part # 999-B3-24232	OTTO	Basic / Snap Action Switches 8A SPDT Wire Wrap Low Current MIL Learn More about OTTO OTTOB3	Datasheet	15In Stock	¥7,614 ¥5,712.2 ¥4,870.1 ¥4,609.3 View ¥4,243.9 ¥4,112.6 Quote	Min.: 1 Mult.: 1	B3	Military Grade Subminiature Basic Switch	SPDT		Button	8 A	115 VAC	28 VDC	5 oz		Chassis Mount
Basic / Snap Action Switches 8A SPDT Solder High Current MIL B3-26131 OTTO 1: ¥5,189 9In Stock	Mfr. Part # B3-26131 Mouser Part # 999-B3-26131	OTTO	Basic / Snap Action Switches 8A SPDT Solder High Current MIL Learn More about OTTO OTTOB3	Datasheet	9In Stock	¥5,189 ¥3,626 ¥3,318.7 ¥3,159.2 View ¥2,891.8 ¥2,802.1 Quote	Min.: 1 Mult.: 1	B3	Military Grade Subminiature Basic Switch	SPDT		Button	8 A	115 VAC	28 VDC	3 oz, 8 oz	Solder Terminal	PCB Mount
Basic / Snap Action Switches 8A SPDT Turret 1/8 Low Current B3-32232 OTTO 1: ¥6,790.2 15In Stock	Mfr. Part # B3-32232 Mouser Part # 999-B3-32232	OTTO	Basic / Snap Action Switches 8A SPDT Turret 1/8 Low Current Learn More about OTTO OTTOB3	Datasheet	15In Stock	¥6,790.2 ¥5,094.3 ¥4,343.5 ¥4,111 View ¥3,783.8 ¥3,665.8 Quote	Min.: 1 Mult.: 1	B3	Commercial Grade Subminiature	SPDT		Button	8 A	115 VAC	28 VDC	5 oz	Solder Turret	Chassis Mount
Basic / Snap Action Switches 8A SPDT-DB RA PC Low Current B3-45242 OTTO 1: ¥7,614 10In Stock	Mfr. Part # B3-45242 Mouser Part # 999-B3-45242	OTTO	Basic / Snap Action Switches 8A SPDT-DB RA PC Low Current Learn More about OTTO OTTOB3	Datasheet	10In Stock	¥7,614 ¥5,712.2 ¥4,870.1 ¥4,609.3 View ¥4,243.9 ¥4,112.6 Quote	Min.: 1 Mult.: 1	B3	Commercial Grade Subminiature	SPDT		Button	8 A	115 VAC	28 VDC	5 oz	Solder Pin, Right Angle	PCB Mount
Basic / Snap Action Switches Sub-Min 8A SPST/SPDT Single Break Switch B3-46131 OTTO 1: ¥4,830.2 19In Stock	Mfr. Part # B3-46131 Mouser Part # 999-B3-46131	OTTO	Basic / Snap Action Switches Sub-Min 8A SPST/SPDT Single Break Switch Learn More about OTTO OTTOB3	Datasheet	19In Stock	¥4,830.2 ¥3,622.6 ¥3,089.5 ¥2,941.6 View ¥2,692.5 ¥2,606.1 ¥2,551.3 Quote	Min.: 1 Mult.: 1	B3	Subminiature	SPDT	ON - (OFF), OFF - (ON)	Button	8 A	115 VAC	28 VDC	141 gf, 170 gf	Solder Terminal	PCB Mount
Basic / Snap Action Switches 8A SPDT-DB PC Pins High Current MIL B3-11141 OTTO 1: ¥5,046.1 7In Stock	Mfr. Part # B3-11141 Mouser Part # 999-B3-11141	OTTO	Basic / Snap Action Switches 8A SPDT-DB PC Pins High Current MIL Learn More about OTTO OTTOB3	Datasheet	7In Stock	¥5,046.1 ¥4,142.5 ¥3,790.4 ¥3,609.4 View ¥3,303.7 ¥3,200.7 Quote	Min.: 1 Mult.: 1	B3	Military Grade Subminiature Basic Switch	SPDT		Button	8 A	115 VAC	28 VDC	3 oz, 8 oz	Solder Pin	PCB Mount
Basic / Snap Action Switches Subminiature Basic Switch OTTO B3-33341 B3-33341 OTTO 1: ¥4,939.8 3In Stock	Mfr. Part # B3-33341 Mouser Part # 999-B3-33341	OTTO	Basic / Snap Action Switches Subminiature Basic Switch	Datasheet	3In Stock	¥4,939.8 ¥4,054.5 ¥3,710.7 ¥3,532.9 View ¥3,232.3 ¥3,132.6 Quote	Min.: 1 Mult.: 1	B3	Commercial Grade Subminiature	SPDT		Button	5 A	115 VAC	28 VDC	5 oz	Wire Lead	PCB Mount
Basic / Snap Action Switches 8A SPNO-DB Turret 1/8 High Current MIL B3-12111 OTTO 1: ¥6,109.2 95In Stock	Mfr. Part # B3-12111 Mouser Part # 999-B3-12111	OTTO	Basic / Snap Action Switches 8A SPNO-DB Turret 1/8 High Current MIL Learn More about OTTO OTTOB3	Datasheet	95In Stock	¥6,109.2 ¥4,582.7 ¥4,200.7 ¥3,946.5 View ¥3,406.7 ¥3,300.4 ¥3,298.7 Quote	Min.: 1 Mult.: 1	B3	Military Grade Subminiature Basic Switch	SPST-NO		Button	8 A	115 VAC	28 VDC	3 oz, 8 oz	Solder Turret	Chassis Mount
Basic / Snap Action Switches 8A SPDT-DB Turret 1/8 High Current MIL B3-12141 OTTO 1: ¥4,876.7 881In Stock	Mfr. Part # B3-12141 Mouser Part # 999-B3-12141	OTTO	Basic / Snap Action Switches 8A SPDT-DB Turret 1/8 High Current MIL Learn More about OTTO OTTOB3	Datasheet	881In Stock	¥4,876.7 ¥4,029.6 ¥3,770.5 ¥3,559.5 View ¥3,376.8 Quote	Min.: 1 Mult.: 1	B3	Subminiature	SPDT	ON - (OFF), OFF - (ON)	Button	8 A	115 VAC	28 VDC	141 gf, 170 gf	Solder Turret	Chassis Mount
Basic / Snap Action Switches 8A SPNO-DB Turret 1/8 Low Current MIL B3-12112 OTTO 1: ¥7,545.9 15In Stock	Mfr. Part # B3-12112 Mouser Part # 999-B3-12112	OTTO	Basic / Snap Action Switches 8A SPNO-DB Turret 1/8 Low Current MIL Learn More about OTTO OTTOB3	Datasheet	15In Stock	¥7,545.9 ¥5,660.7 ¥4,826.9 ¥4,569.4 View ¥4,205.7 ¥4,076.1 Quote	Min.: 1 Mult.: 1	B3	Military Grade Subminiature Basic Switch	SPST-NO		Button	8 A	115 VAC	28 VDC	3 oz, 8 oz	Solder Turret	Chassis Mount
Basic / Snap Action Switches 8A SPDT-DB Turret 1/8 Low Current MIL B3-12142 OTTO 1: ¥5,780.3 4In Stock	Mfr. Part # B3-12142 Mouser Part # 999-B3-12142	OTTO	Basic / Snap Action Switches 8A SPDT-DB Turret 1/8 Low Current MIL Learn More about OTTO OTTOB3	Datasheet	4In Stock	¥5,780.3 ¥4,919.9 ¥4,672.4 ¥4,448.2 View ¥4,124.3 ¥3,946.5	Min.: 1 Mult.: 1	B3	Subminiature	SPDT	ON - (OFF), OFF - (ON)	Button	8 A	115 VAC	28 VDC	141 gf, 170 gf	Solder Turret	Chassis Mount
Basic / Snap Action Switches 8A SPDT-DB Turret 1/8 High Current MIL B3-12241 OTTO 1: ¥6,286.9 4In Stock	Mfr. Part # B3-12241 Mouser Part # 999-B3-12241	OTTO	Basic / Snap Action Switches 8A SPDT-DB Turret 1/8 High Current MIL Learn More about OTTO OTTOB3	Datasheet	4In Stock	¥6,286.9 ¥4,717.2 ¥4,021.3 ¥3,828.6 View ¥3,504.7 ¥3,395.1 Quote	Min.: 1 Mult.: 1	B3	Military Grade Subminiature Basic Switch	SPDT		Button	8 A	115 VAC	28 VDC	5 oz	Solder Turret	Chassis Mount
Basic / Snap Action Switches 8A SPDT Turret 3/16 HighCurrent MIL B3-13131 OTTO 1: ¥5,115.9 6In Stock	Mfr. Part # B3-13131 Mouser Part # 999-B3-13131	OTTO	Basic / Snap Action Switches 8A SPDT Turret 3/16 HighCurrent MIL Learn More about OTTO OTTOB3	Datasheet	6In Stock	¥5,115.9 ¥4,316.9 ¥3,853.5 ¥3,614.3 View ¥3,243.9 ¥3,033 Quote	Min.: 1 Mult.: 1	B3	Subminiature	SPDT	ON - (OFF), OFF - (ON)	Button	8 A	115 VAC	28 VDC	141 gf, 170 gf	Solder Turret	Chassis Mount
Basic / Snap Action Switches 8A SPDT Turret 3/16 Low Current MIL B3-13132 OTTO 1: ¥7,452.9 13In Stock	Mfr. Part # B3-13132 Mouser Part # 999-B3-13132	OTTO	Basic / Snap Action Switches 8A SPDT Turret 3/16 Low Current MIL Learn More about OTTO OTTOB3	Datasheet	13In Stock	¥7,452.9 ¥5,590.9 ¥4,767.1 ¥4,512.9 View ¥4,154.2 ¥4,024.6 Quote	Min.: 1 Mult.: 1	B3	Military Grade Subminiature Basic Switch	SPDT		Button	8 A	115 VAC	28 VDC	3 oz, 8 oz	Solder Turret	Chassis Mount
Basic / Snap Action Switches 8A SPDT-DB Turret 1/8 High Current MIL B3-22141 OTTO 1: ¥3,506.4 32In Stock	Mfr. Part # B3-22141 Mouser Part # 999-B3-22141	OTTO	Basic / Snap Action Switches 8A SPDT-DB Turret 1/8 High Current MIL Learn More about OTTO OTTOB3	Datasheet	32In Stock	¥3,506.4 ¥3,305.4 ¥3,243.9 ¥3,057.9 View ¥2,837 ¥2,792.1 ¥2,778.9 Quote	Min.: 1 Mult.: 1	B3	Subminiature	SPDT	ON - (OFF), OFF - (ON)	Button	8 A	115 VAC	28 VDC	141 gf, 170 gf	Solder Turret	Chassis Mount
Basic / Snap Action Switches 8A SPDT-DB Turret 1/8 High Current MIL B3-22241 OTTO 1: ¥5,443.1 19In Stock	Mfr. Part # B3-22241 Mouser Part # 999-B3-22241	OTTO	Basic / Snap Action Switches 8A SPDT-DB Turret 1/8 High Current MIL Learn More about OTTO OTTOB3	Datasheet	19In Stock	¥5,443.1 ¥4,101 ¥3,702.4 ¥3,449.9 View ¥3,204.1 ¥3,084.5 ¥3,082.8	Min.: 1 Mult.: 1	B3	Military Grade Subminiature Basic Switch	SPDT		Button	8 A	115 VAC	28 VDC	5 oz	Solder Turret	Chassis Mount
Basic / Snap Action Switches 8A SPDT-DB Solder High Current MIL B3-26141 OTTO 1: ¥4,341.9 13In Stock	Mfr. Part # B3-26141 Mouser Part # 999-B3-26141	OTTO	Basic / Snap Action Switches 8A SPDT-DB Solder High Current MIL Learn More about OTTO OTTOB3	Datasheet	13In Stock	¥4,341.9 ¥3,599.4 ¥3,383.5 ¥3,185.8 View ¥2,935 ¥2,762.2 Quote	Min.: 1 Mult.: 1	B3	Subminiature	SPDT	ON - (OFF), OFF - (ON)	Button	8 A	115 VAC	28 VDC	141 gf, 170 gf	Solder Terminal	PCB Mount
Basic / Snap Action Switches 8A SPDT Turret 1/8 High Current B3-32131 OTTO 1: ¥3,954.8 8In Stock	Mfr. Part # B3-32131 Mouser Part # 999-B3-32131	OTTO	Basic / Snap Action Switches 8A SPDT Turret 1/8 High Current Learn More about OTTO OTTOB3	Datasheet	8In Stock	¥3,954.8 ¥3,353.6 ¥3,061.2 ¥2,925 View ¥2,747.3 ¥2,665.9 Quote	Min.: 1 Mult.: 1	B3	Subminiature	SPDT	ON - (OFF), OFF - (ON)	Button	8 A	115 VAC	28 VDC	141 gf, 170 gf	Solder Turret	Chassis Mount
Basic / Snap Action Switches 8A SPDT Turret 1/8 High Current MIL B3-12131 OTTO 1: ¥4,826.9 213Expected 11/30/2026	Mfr. Part # B3-12131 Mouser Part # 999-B3-12131	OTTO	Basic / Snap Action Switches 8A SPDT Turret 1/8 High Current MIL Learn More about OTTO OTTOB3	Datasheet	213Expected 11/30/2026	¥4,826.9 ¥4,067.8 ¥3,720.6 ¥3,554.5 View ¥3,262.2 ¥3,177.5	Min.: 1 Mult.: 1	B3	Subminiature	SPDT	ON - (OFF), OFF - (ON)	Button	8 A	115 VAC	28 VDC	141 gf, 170 gf	Solder Turret	Chassis Mount
Basic / Snap Action Switches 8A SPDT PC Pins Low Current MIL B3-11232 OTTO 1: ¥6,288.5 13Expected 11/30/2026	Mfr. Part # B3-11232 Mouser Part # 999-B3-11232	OTTO	Basic / Snap Action Switches 8A SPDT PC Pins Low Current MIL Learn More about OTTO OTTOB3	Datasheet	13Expected 11/30/2026	¥6,288.5 ¥5,298.6 ¥4,848.5 ¥4,597.6 View ¥4,248.8 ¥4,139.2	Min.: 1 Mult.: 1	B3	Military Grade Subminiature Basic Switch	SPDT		Button	8 A	115 VAC	28 VDC	5 oz	Solder Pin	PCB Mount
Basic / Snap Action Switches 8A SPDT Turret 1/8 High Current MIL B3-22131 OTTO 1: ¥5,099.3 14On Order	Mfr. Part # B3-22131 Mouser Part # 999-B3-22131	OTTO	Basic / Snap Action Switches 8A SPDT Turret 1/8 High Current MIL Learn More about OTTO OTTOB3	Datasheet	14On Order On Order Ship Dates Mfr. #: B3-22131 Stock: 0 On Order: 6 Expected 11/19/2026 8 Expected 11/26/2026 Factory Lead-Time: 9 Weeks	¥5,099.3 ¥3,825.3 ¥3,262.2 ¥3,106.1 View ¥2,842 ¥2,753.9 ¥2,752.3 Quote	Min.: 1 Mult.: 1	B3	Military Grade Subminiature Basic Switch	SPDT		Button	8 A	115 VAC	28 VDC	3 oz, 8 oz	Solder Turret	Chassis Mount