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 (CAD) 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 SPDT-DB Turret 1/8 High Current B3-42141 OTTO 1: $33.47 411In Stock 1,000Expected 2026-09-23	Mfr. Part # B3-42141 Mouser Part # 999-B3-42141	OTTO	Basic / Snap Action Switches 8A SPDT-DB Turret 1/8 High Current Learn More about OTTO OTTOB3	Datasheet	411In Stock 1,000Expected 2026-09-23	$33.47 $28.20 $25.79 $24.65 View $22.61 $22.02	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 B3-11132 OTTO 1: $63.85 25In Stock	Mfr. Part # B3-11132 Mouser Part # 999-B3-11132	OTTO	Basic / Snap Action Switches 8A SPDT PC Pins Low Current MIL Learn More about OTTO OTTOB3	Datasheet	25In Stock	$63.85 $47.89 $43.91 $38.65 View $35.58 $34.47 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 8A SPNC-DB Turret 1/8 High Current MIL B3-12121 OTTO 1: $52.96 15In Stock	Mfr. Part # B3-12121 Mouser Part # 999-B3-12121	OTTO	Basic / Snap Action Switches 8A SPNC-DB Turret 1/8 High Current MIL Learn More about OTTO OTTOB3	Datasheet	15In Stock	$52.96 $39.73 $33.88 $32.26 View $29.53 $28.61 $28.60 Quote	Min.: 1 Mult.: 1	B3	Military Grade Subminiature Basic Switch	SPST-NC		Button	8 A	115 VAC	28 VDC	3 oz, 8 oz	Solder Turret	Chassis Mount
Basic / Snap Action Switches 8A SPNC-DB Turret 1/8 Low Current MIL B3-12122 OTTO 1: $65.42 15In Stock	Mfr. Part # B3-12122 Mouser Part # 999-B3-12122	OTTO	Basic / Snap Action Switches 8A SPNC-DB Turret 1/8 Low Current MIL Learn More about OTTO OTTOB3	Datasheet	15In Stock	$65.42 $49.08 $41.85 $39.61 View $36.46 $35.34 Quote	Min.: 1 Mult.: 1	B3	Military Grade Subminiature Basic Switch	SPST-NC		Button	8 A	115 VAC	28 VDC	3 oz, 8 oz	Solder Turret	Chassis Mount
Basic / Snap Action Switches 8A SPDT Turret 1/8 Low Current MIL B3-12232 OTTO 1: $66.96 7In Stock	Mfr. Part # B3-12232 Mouser Part # 999-B3-12232	OTTO	Basic / Snap Action Switches 8A SPDT Turret 1/8 Low Current MIL Learn More about OTTO OTTOB3	Datasheet	7In Stock	$66.96 $50.24 $42.83 $40.54 View $37.32 $36.17 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-DB Turret 1/8 Low Current MIL B3-12242 OTTO 1: $66.96 10In Stock	Mfr. Part # B3-12242 Mouser Part # 999-B3-12242	OTTO	Basic / Snap Action Switches 8A SPDT-DB Turret 1/8 Low Current MIL Learn More about OTTO OTTOB3	Datasheet	10In Stock	$66.96 $50.24 $42.83 $40.54 View $37.32 $36.17 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-DB Turret 3/16 Low Current MIL B3-13342 OTTO 1: $59.05 10In Stock	Mfr. Part # B3-13342 Mouser Part # 999-B3-13342	OTTO	Basic / Snap Action Switches 8A SPDT-DB Turret 3/16 Low Current MIL Learn More about OTTO OTTOB3	Datasheet	10In Stock	$59.05 $51.67 $44.50 $42.08 View $39.08 $37.84 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 SPNC-DB Wire Wrap High Current MIL B3-14121 OTTO 1: $59.18 1In Stock	Mfr. Part # B3-14121 Mouser Part # 999-B3-14121	OTTO	Basic / Snap Action Switches 8A SPNC-DB Wire Wrap High Current MIL Learn More about OTTO OTTOB3	Datasheet	1In Stock	$59.18 $41.37 $37.87 $35.83 View $32.99 $31.97 $31.95 Quote	Min.: 1 Mult.: 1	B3	Military Grade Subminiature Basic Switch	SPST-NC		Button	8 A	115 VAC	28 VDC	3 oz, 8 oz		Chassis Mount
Basic / Snap Action Switches 8A SPDT-DB Wire Wrap High Current MIL B3-14341 OTTO 1: $63.85 15In Stock	Mfr. Part # B3-14341 Mouser Part # 999-B3-14341	OTTO	Basic / Snap Action Switches 8A SPDT-DB Wire Wrap High Current MIL Learn More about OTTO OTTOB3	Datasheet	15In Stock	$63.85 $47.89 $40.84 $38.65 View $35.58 $34.47 Quote	Min.: 1 Mult.: 1	B3	Military Grade Subminiature Basic Switch	SPDT		Button	8 A	115 VAC	28 VDC	6 oz		Chassis Mount
Basic / Snap Action Switches 8A SPDT RA PC Pins HighCurrent MIL B3-15231 OTTO 1: $63.85 10In Stock	Mfr. Part # B3-15231 Mouser Part # 999-B3-15231	OTTO	Basic / Snap Action Switches 8A SPDT RA PC Pins HighCurrent MIL Learn More about OTTO OTTOB3	Datasheet	10In Stock	$63.85 $47.89 $40.84 $38.65 View $35.58 $34.47 Quote	Min.: 1 Mult.: 1	B3	Military Grade Subminiature Basic Switch	SPDT		Button	8 A	115 VAC	28 VDC	5 oz	Solder Pin, Right Angle	PCB Mount
Basic / Snap Action Switches 8A SPDT-DB RA PC Pins HighCurrent MIL B3-15241 OTTO 1: $54.36 25In Stock	Mfr. Part # B3-15241 Mouser Part # 999-B3-15241	OTTO	Basic / Snap Action Switches 8A SPDT-DB RA PC Pins HighCurrent MIL Learn More about OTTO OTTOB3	Datasheet	25In Stock	$54.36 $44.61 $40.84 $38.65 View $35.58 $34.49 $34.47 Quote	Min.: 1 Mult.: 1	B3	Military Grade Subminiature Basic Switch	SPDT		Button	8 A	115 VAC	28 VDC	5 oz	Solder Pin, Right Angle	PCB Mount
Basic / Snap Action Switches 8A SPDT-DB PC Pins High Current MIL B3-21141 OTTO 1: $44.21 19In Stock	Mfr. Part # B3-21141 Mouser Part # 999-B3-21141	OTTO	Basic / Snap Action Switches 8A SPDT-DB PC Pins High Current MIL Learn More about OTTO OTTOB3	Datasheet	19In Stock	$44.21 $33.16 $28.28 $26.93 View $24.64 $23.88 $23.86	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 8A SPDT Turret 1/8 Low Current MIL B3-22132 OTTO 1: $56.66 15In Stock	Mfr. Part # B3-22132 Mouser Part # 999-B3-22132	OTTO	Basic / Snap Action Switches 8A SPDT Turret 1/8 Low Current MIL Learn More about OTTO OTTOB3	Datasheet	15In Stock	$56.66 $42.51 $35.57 $33.74 View $31.18 $30.37	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 SPNO-DB Wire Wrap High Current MIL B3-24212 OTTO 1: $67.58 15In Stock	Mfr. Part # B3-24212 Mouser Part # 999-B3-24212	OTTO	Basic / Snap Action Switches 8A SPNO-DB Wire Wrap High Current MIL Learn More about OTTO OTTOB3	Datasheet	15In Stock	$67.58 $50.70 $43.23 $40.91 View $37.67 $36.49 Quote	Min.: 1 Mult.: 1	B3	Military Grade Subminiature Basic Switch	SPST-NO		Button	8 A	115 VAC	28 VDC	5 oz		Chassis Mount
Basic / Snap Action Switches 8A SPDT-DB RA PC Pin High Current MIL B3-25141 OTTO 1: $53.55 20In Stock	Mfr. Part # B3-25141 Mouser Part # 999-B3-25141	OTTO	Basic / Snap Action Switches 8A SPDT-DB RA PC Pin High Current MIL Learn More about OTTO OTTOB3	Datasheet	20In Stock	$53.55 $40.18 $34.26 $32.62 View $29.85 $28.93 $28.92	Min.: 1 Mult.: 1	B3	Military Grade Subminiature Basic Switch	SPDT		Button	8 A	115 VAC	28 VDC	3 oz, 8 oz	Solder Pin, Right Angle	PCB Mount
Basic / Snap Action Switches 8A SPDT Turret 1/8 Low Current B3-32132 OTTO 1: $55.76 7In Stock	Mfr. Part # B3-32132 Mouser Part # 999-B3-32132	OTTO	Basic / Snap Action Switches 8A SPDT Turret 1/8 Low Current Learn More about OTTO OTTOB3	Datasheet	7In Stock	$55.76 $41.82 $35.65 $33.75 View $31.08 $30.11 $30.10 Quote	Min.: 1 Mult.: 1	B3	Commercial Grade Subminiature	SPDT		Button	8 A	115 VAC	28 VDC	3 oz, 8 oz	Solder Turret	Chassis Mount
Basic / Snap Action Switches 8A SPDT-DB RA PC High Current B3-45141 OTTO 1: $50.44 15In Stock	Mfr. Part # B3-45141 Mouser Part # 999-B3-45141	OTTO	Basic / Snap Action Switches 8A SPDT-DB RA PC High Current Learn More about OTTO OTTOB3	Datasheet	15In Stock	$50.44 $37.84 $32.27 $30.72 View $28.12 $27.23	Min.: 1 Mult.: 1	B3	Commercial Grade Subminiature	SPDT		Button	8 A	115 VAC	28 VDC	3 oz, 8 oz	Solder Pin, Right Angle	PCB Mount
Basic / Snap Action Switches 8A SPDT-DB RA PC Low Current B3-45142 OTTO 1: $62.90 15In Stock	Mfr. Part # B3-45142 Mouser Part # 999-B3-45142	OTTO	Basic / Snap Action Switches 8A SPDT-DB RA PC Low Current Learn More about OTTO OTTOB3	Datasheet	15In Stock	$62.90 $47.19 $40.23 $38.09 View $35.05 $33.97 $33.96 Quote	Min.: 1 Mult.: 1	B3	Commercial Grade Subminiature	SPDT		Button	8 A	115 VAC	28 VDC	3 oz, 8 oz	Solder Pin, Right Angle	PCB Mount
Basic / Snap Action Switches 8A SPDT-DB Solder Low Current B3-46142 OTTO 1: $54.33 1In Stock	Mfr. Part # B3-46142 Mouser Part # 999-B3-46142	OTTO	Basic / Snap Action Switches 8A SPDT-DB Solder Low Current Learn More about OTTO OTTOB3	Datasheet	1In Stock	$54.33 $37.96 $34.75 $33.09 View $30.28 $29.33 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 PC Pins High Current MIL B3-11131 OTTO 1: $51.39 30In Stock	Mfr. Part # B3-11131 Mouser Part # 999-B3-11131	OTTO	Basic / Snap Action Switches 8A SPDT PC Pins High Current MIL Learn More about OTTO OTTOB3	Datasheet	30In Stock	$51.39 $38.55 $35.34 $31.29 View $28.64 $27.75 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 8A SPNC-DB Turret 1/8 High Current MIL B3-12321 OTTO 1: $59.18 15In Stock	Mfr. Part # B3-12321 Mouser Part # 999-B3-12321	OTTO	Basic / Snap Action Switches 8A SPNC-DB Turret 1/8 High Current MIL Learn More about OTTO OTTOB3	Datasheet	15In Stock	$59.18 $44.41 $37.87 $35.83 View $32.99 $31.95 Quote	Min.: 1 Mult.: 1	B3	Military Grade Subminiature Basic Switch	SPST-NC		Button	8 A	115 VAC	28 VDC	6 oz	Solder Turret	Chassis Mount
Basic / Snap Action Switches 8A SPDT-DB Turret 1/8 Low Current MIL B3-12342 OTTO 1: $58.41 10In Stock	Mfr. Part # B3-12342 Mouser Part # 999-B3-12342	OTTO	Basic / Snap Action Switches 8A SPDT-DB Turret 1/8 Low Current MIL Learn More about OTTO OTTOB3	Datasheet	10In Stock	$58.41 $51.11 $44.01 $41.62 View $38.65 $37.44 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-DB Turret 3/16 Low Current MIL B3-13142 OTTO 1: $64.61 15In Stock	Mfr. Part # B3-13142 Mouser Part # 999-B3-13142	OTTO	Basic / Snap Action Switches 8A SPDT-DB Turret 3/16 Low Current MIL Learn More about OTTO OTTOB3	Datasheet	15In Stock	$64.61 $48.47 $41.33 $39.12 View $36.01 $34.89 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 Wire Wrap High Current MIL B3-14131 OTTO 1: $57.61 15In Stock	Mfr. Part # B3-14131 Mouser Part # 999-B3-14131	OTTO	Basic / Snap Action Switches 8A SPDT Wire Wrap High Current MIL Learn More about OTTO OTTOB3	Datasheet	15In Stock	$57.61 $43.23 $36.85 $34.88 View $32.11 $31.12 $31.10	Min.: 1 Mult.: 1	B3	Military Grade Subminiature Basic Switch	SPDT		Button	8 A	115 VAC	28 VDC	3 oz, 8 oz		Chassis Mount
Basic / Snap Action Switches 8A SPDT Wire Wrap High Current MIL B3-14331 OTTO 1: $63.85 10In Stock	Mfr. Part # B3-14331 Mouser Part # 999-B3-14331	OTTO	Basic / Snap Action Switches 8A SPDT Wire Wrap High Current MIL Learn More about OTTO OTTOB3	Datasheet	10In Stock	$63.85 $47.89 $40.84 $38.65 View $35.58 $34.47 Quote	Min.: 1 Mult.: 1	B3	Military Grade Subminiature Basic Switch	SPDT		Button	8 A	115 VAC	28 VDC	6 oz		Chassis Mount

B3 Basic Subminiature Snap-Action Switches

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