Tactile Switch B3W Tactile Switch with Sealed Construction for Automatic Soldering Sealed construction conforming to IP67 (IEC-60529) provides high reliability in locations exposed to dust or water. Available in two sizes: 6 mm square and 12 mm square Dome-shaped contact mechanism assures short key stroke and a sharp click to confirm actuation Ground terminal available to protect against static electricity Projected plunger types that allow the installation of B32-series Special Key Tops are available. RoHS Compliant Ordering Information Model Without ground terminal With ground terminal Type Plunger Switch height Operating force Bags Bags Standard Flat 4.3 mm General-purpose: 160 g B3W-1000 B3W-1100 6x6 mm High-force: 230 g B3W-1002 B3W-1102 Projected 7.3 mm General-purpose: 160 g B3W-1050 B3W-1150 High-force: 230 g B3W-1052 B3W-1152 Standard Flat 4.3 mm General-purpose: 200 g B3W-4000 B3W-4100 12x12 mm High-force: 350 g B3W-4005 B3W-4105 Projected 7.3 mm General-purpose: 200 g B3W-4050 B3W-4150 High-force: 350 g B3W-4055 B3W-4155 Note: Bulk Packaged, 100 switches per bag. Order in multiples of the package quantity. Important Note: Switches cannot be water-washed. Accessories See B32 Tactile Switch Key Top data sheet for keycaps that fit projected plunger B3W models. Plunger Identification Table Use this table to determine keyswitch type by plunger color. Plunger color Operating force Type White 160 g B3W-1000, 1050, 1100, 1150 White 200 g B3W-4000, 4050, 4100, 4150 Yellow 230 g B3W-1002, 1052, 1102, 1152 Yellow 350 g B3W-4005, 4055, 4105, 4155 Tactile Switch B3W 231Specifications Characteristics Contact form SPST-NO Switching capacity 1 to 50 mA, 5 to 24 VDC (resistive load) Contact resistance 100 m max. (rated: 1 mA, 5 VDC) Insulation resistance 100 M min. (at 250 VDC) Dielectric strength 500 VAC, 50/60 Hz for 1 min. Bounce time 5 ms max. Vibration resistance Malfunction: 10 to 55 Hz, 1.5-mm double amplitude 2 Shock resistance Destruction: 1,000 m/s (approx. 100 G) max. 2 Malfunction: 100 m/s (approx. 10 G) max. Ambient operating temperature -25 to 70C (at 60% RH max.) with no icing or condensation Ambient operating humidity 35% to 85% (at 5 to 35C) Service life General purpose B3W-1 : 1,000,000 operations min. B3W-4 : 3,000,000 operations min. High force 300,000 operations min. 1,000,000 operations min. Weight B3W-1 : Approx. 0.30 g B3W-4 : Approx. 1.00 g Operating Characteristics B3W-1 B3W-4 Characteristics General-purpose High-force General-purpose High-force Operating force (OF) max. 160 g 230 g 200 g 350 g Release force (RF) min. 20 g 50 g 30 g 50 g +0.2 +0.2 Pretravel (PT) 0.25 / mm 0.3 / mm -0.1 -0.1 Engineering Data Operating Force vs. Stroke (Typical Example) B3W-1 series B3W-4 series Construction Plunger Spacer Cover Sealed rubber Contact dome Base Fixed contact 232 Tactile Switch B3W