Back Mechanical Key Switch B3F A Wide Range of Models: 6 x 6 mm, 12 x 12 mm, Vertical and High-force. Excellent tactile feel combined with high life expectancy. Available in stick packaging for automatic mounting to PCBs. Up to 2.55 N (260-gf) operating force for a firmer operating touch. Pushbuttons available in nine colors. Ordering Information 6 x 6 mm Models Type Standard Plunger Flat Height x pitch Operating Without ground terminal force (OF) Bags * 0.98 N (100 gf) B3F-1000 B3F-1000S B3F-1100 B3F-1100S 1.47 N (150 gf) B3F-1002 B3F-1002S B3F-1102 B3F-1102S 2.55 N (260 gf) B3F-1005 B3F-1005S B3F-1105 B3F-1105S 0.98 N (100 gf) B3F-1020 B3F-1020S B3F-1120 B3F-1120S 1.47 N (150 gf) B3F-1022 B3F-1022S B3F-1122 B3F-1122S 2.55 N (260 gf) B3F-1025 B3F-1025S B3F-1125 B3F-1125S 5.0 x 7.5 mm 0.98 N (100 gf) --- --- B3F-1110 --- 7.3 x 6.5 mm 0.98 N (100 gf) B3F-1050 B3F-1050S B3F-1150 B3F-1150S 1.47 N (150 gf) B3F-1052 B3F-1052S B3F-1152 B3F-1152S 4.3 x 6.5 mm (B3F-1jjj) 5.0 x 6.5 mm Projected Vertical With ground terminal Sticks (90/stick) Bags * Sticks (75/stick) 2.55 N (260 gf) B3F-1055 B3F-1055S B3F-1155 B3F-1155S Extended 9.5 x 6.5 mm 0.98 N (100 gf) B3F–1070 --- --- --- Flat 3.15 mm 0.98 N (100 gf) --- --- B3F-3100 --- 1.47 N (150 gf) --- --- B3F-3102 --- 2.55 N (260 gf) --- --- B3F-3105 --- 0.98 N (100 gf) --- --- B3F-3120 --- 1.47 N (150 gf) --- --- B3F-3122 --- 2.55 N (260 gf) --- --- B3F-3125 --- 0.98 N (100 gf) --- --- B3F-3150 --- 1.47 N (150 gf) --- --- B3F-3152 --- 2.55 N (260 gf) --- --- B3F-3155 --- (B3F-3jjj) 3.85 mm Projected 6.15 mm * (100 / bag) Plunger type Flat Projected Extended Flat (vertical) Projected (vertical) Appearance 4.3 or 7.3 9.5 3.15 or 3.85 6.15 12 x 12 mm Models Type Plunger (or LED color) Height x pitch Operating force (OF) Without ground terminal Flat 4.3 x 12.5 mm 1.27 N (130 gf) B3F-4000 B3F-4000S B3F-4100 B3F-4100S 2.55 N (260 gf) B3F-4005 B3F-4005S B3F-4105 B3F-4105S Projected 7.3 x 12.5 mm 1.27 N (130 gf) B3F-4050 B3F-4050S B3F-4150 B3F-4150S 2.55 N (260 gf) B3F-4055 B3F-4055S B3F-4155 B3F-4155S 1.27 N (130 gf) B3F-5000 B3F-5000S B3F-5100 B3F-5100S B3F-5050 B3F-5050S B3F-5150 B3F-5150S B3F-5001 B3F-5001S B3F-5101 B3F-5101S B3F-5051 B3F-5051S B3F-5151 B3F-5151S Bags ** Standard (B3F-4jjj) With ground terminal Sticks (45/stick)* Bags ** Sticks (45/stick) Long life expectancy Flat 4.3 x 12.5 mm (B3F-5jj0) Projected 7.3 x 12.5 mm High reliability gold-plated Flat 4.3 x 12.5 mm (B3F-5jj1) Projected 7.3 x 12.5 mm Surface Red LED 7.3 x 12.5 mm --- B3F-9100 --- --- illumination Green LED --- B3F-9200 --- --- Yellow LED (B3F-9jjj) * 36 per stick for B3F-9jjj. ** (100 / bag) --- B3F-9300 --- --- 1.27 N (130 gf) 1.27 N (130 gf) Accessories (order separately) Special keytops are available for projected plunger models. See page 27 (Product B32). Specifications Ratings Switching capacity 5 to 24 VDC, 1 to 50 mA (resistive load) Insulation voltage 30 VDC Characteristics Contact form SPST-NO Contact resistance 100 mΩ max. (at 5 VDC, 1 mA; initial value.) Insulation resistance 100 MΩ 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 Shock resistance Destruction: 1,000 m/s2 min. (Approx. 100 G min.) Malfunction: 100 m/s2 min. (Approx. 10G min.) Life expectancy B3F-1jjj, -3jjj: 100-gf OF: 1,000,000 operations min. 150-gf OF: 300,000 operations min. 260-gf OF: 100,000 operations min. B3F-4jjj: 130-gf OF: 3,000,000 operations min. 260-gf OF: 1,000,000 operations min. B3F-5jjj: 10,000,000 operations min. B3F-9jjj: 1,000,000 operations min. Ambient temperature –25°C to 70°C (with no icing) Ambient humidity 35% to 85% Weight 6 x 6 mm models: approx. 0.25 g 12 x 12 mm models: approx. 0.85 g Operating Characteristics Model B3F-1jjj, -3jjj B3F-4jjj, -5jjj, -9jjj 100 gf models 150 gf models 260 gf models 130 gf models 260 gf models B3F-1jj0, -3jj0 B3F-1jj2, -3jj2 B3F-1jj5, -3jj5 B3F-4jj0, -5jj0, -9jj0 B3F-4jj5 Operating force (OF) 0.98±0.32 N (100±30 gf) 1.47±0.49 N (150±50 gf) 2.55±0.69 N (260±70 gf) 1.27±0.49 N (130±50 gf) 2.55±0.69 N (260±70 gf) Reset force (RF min.) 0.2 N (20 gf) 0.49 N (50 gf) 0.49 N (50 gf) 0.29 N (30 gf) 0.49 N (50 gf) Pretravel (PT) 0.25+0.2/–0.1 mm 0.3+0.2/–0.1 mm Engineering Data Forward Current Derating Curve Operating Force vs. Stroke (Typical) B3F-1jjj, -3jjj B3F-4jjj, -5jjj, -9jjj OF: 150 gf Forward current (mA) Operating force (gf) Operating force (gf) OF: 260 gf OF: 130 gf OF: 100 gf Stroke S (mm) Stroke S (mm) Note: Ambient temperature (°C) To determine illuminated current of surface illumination types (B3F-9jjj), refer to the above forward current derating curve. Dimensions Note: 1. Unless otherwise stated, a tolerance of ± 0.4mm applies to all dimensions 2. No terminal numbers appear on the switches. To orient a switch in the “bottom view” position, turn it so that the terminals are on the up and down sides and the word OMRON is right-side up. (Bottom view) 6 x 6 mm Models Standard, Flat Plunger Type (without Ground Terminal) B3F-1000, -1002, -1005, -1020**, -1022**, -1025** Standard, Flat Plunger Type (with Ground Terminal, Pitch: 6.5 mm) B3F-1100, -1102, -1105, PCB Mounting -1120**, -1122**, -1125** (Top View) PCB Mounting (Top View) 6±0.2 6±0.2 4.5±0.1 6±0.2 4.5±0.1 6±0.2 4.5±0.2 4.5±0.2 6.5±0.1 Four 1±0.05 dia 1.5 Terminal Arrangement /Internal Connections (Top View) 3.4 3.5 0.3 6.5±0.5 0.7 7.7±0.5 Five 1±0.05 dia 6.5±0.1 3.5 dia 3.5 dia 4.3±0.2** 4.1±0.1 4 3 2 1 4.3±0.2** Terminal Arrangement /Internal Connections (Top View) 3.4 3.5 0.3 6.5±0.5 7.7±0.5 0.7 0.7 3 4 0.7 2 1 5 **Height of B3F-1020, -1022, -1025 is 5±0.2 mm. **Height of B3F-1120, -1122, -1125 is 5±0.2 mm. Standard, Projected Plunger Type (without Ground Terminal) B3F-1050, -1052, -1055 PCB Mounting Standard, Projected Plunger Type (with Ground Terminal) B3F-1150, -1152, -1155 (Top View) PCB Mounting (Top View) 6±0.2 6±0.2 4.5±0.1 6±0.2 6±0.2 4.5±0.2 4.5±0.2 4.5±0.1 6.5±0.1 Four 1±0.05 dia 4.1±0.1 1.5 j2.4±0.1 3.5 dia j2.4±0.1 1.8±0.1 7.3±0.2 4.3±0.2 1.8±0.1 4.3±0.2 3.4 4 2 0.7 7.7±0.5 0.7 1 3 4 0.3 0.3 6.5±0.5 Five 1±0.0 Terminal Arrangement /Internal Connections5 dia (Top View) 3.4 3 3.5 3.5 3.5 dia 6.5±0.1 Terminal Arrangement /Internal Connections (Top View) 7.3±0.2 2 6.5±0.5 7.7±0.5 0.7 0.7 1 5 Extended Type B3F-1070 PCB Mounting (Top View) 6±0.2 4.5±0.2 4.5±0.1 6±0.2 3.5 dia 3 dia 6.5±0.1 9.5 four 1.0 dia ± 0.05 Internal Connections (Top View) Max. 0.5 3.4 3.5 0.3 6.5±0.5 7.5±0.5 0.7 0.7 Vertical, Projected Plunger Type (Height: 6.15 mm) B3F-3150, -3152, -3155 PCB Mounting Vertical, Flat Plunger Type (Height: 3.15 mm) (Height: 3.85mm) B3F-3100, -3102, B3F-3120, -3122, -3105 -3125 (Top View) 7.3 PCB Mounting (Top View) 7.3 Two 1.5±0.05 dia Two 1.5±0.05 dia 6.25 6.25 2.5±0.1 2.5±0.1 4.5±0.1 7±0.1 4.5±0.1 3.5 dia Two 1±0.05 dia 3.5 dia 7±0.1 j2.4±0.1 Two 1±0.05 dia 7.4 7.4 Terminal Arrangement /Internal Connections (Top View) 4 3.5 0.3 0.3 0.7 4 3.5 1 0.3 0.7 2.25 4.5±0.5 7±0.5 8.7 4.5±0.5 7±0.5 8.7 2.5±0.5 3.15±0.2/3.85±0.2 12 x 12 mm Models Standard, Long Life Expectancy, High Reliability, Flat Plunger Type (without Ground Terminal) B3F-4000, -4005, -5000, -5001 Terminal Arrangement /Internal Connections (Top View) 1.8±0.1 0.3 2.25 6.15±0.2 1 2.5±0.5 Standard, Long Life Expectancy, High Reliability, Flat Plunger Type (with Ground Terminal) B3F-4100, -4105, -5100, -5101 PCB Mounting (Top View) PCB Mounting (Top View) Two 1.8±0.05 dia Two 1.8±0.05 dia 12±0.2 5±0.1 9±0.1 5±0.1 9±0.1 12±0.2 5±0.2 12±0.2 12.5±0.1 5±0.2 12±0.2 Four 1.2±0.05 dia 1.6 3.5 Terminal Arrangement /Internal Connections (Top View) 3.5 0.3 12.5±0.5 13.8±0.5 Five 1.2±0.0 5 Terminal Arrangement dia /Internal Connections 12.5±0.1 7.1 dia 4.3±0.2 6.9±0.1 1 1 9±0.1 4 3 2 1 4.3±0.2 7.1 dia (Top View) 3.5 3 4 3.5 0.9 12.5±0.5 13.8±0.5 0.3 1 1 9±0.1 2 1 5 Standard, Long Life Expectancy, High Reliability, Projected Plunger Type (without Ground Terminal) B3F-4050, -4055, -5050, -5051 Standard, Long Life Expectancy, High Reliability, Projected Plunger Type (with Ground Terminal) B3F-4150, -4155, -5150, -5151 PCB Mounting (Top View) PCB Mounting (Top View) Two 1.8±0.05 dia Two 1.8±0.05 dia 12±0.2 12±0.2 5±0.1 9±0.1 5±0.1 9±0.1 5±0.2 12±0.2 5±0.2 12±0.2 6.9±0.1 Four 1.2±0.0 5 Terminal Arrangement dia /Internal Connections 12.5±0.1 j3.8±0.1 7.1 dia 1.8±0.2 7.3±0.2 4.3±0.2 3.5 1.6 7.1 dia j3.8±0.1 1.8±0.2 (Top View) 3.5 4 3 2 1 4.3±0.2 1 1 9±0.1 12.5±0.5 13.8±0.5 3.5 0.9 12.5±0.5 13.8±0.5 0.3 PCB Mounting (Top View) Two 1.8±0.05 dia 12±0.2 15±0.2 12±0.2 Six 1.2±0.05 dia j10 8.4 dia. 7.1 dia. 12.5±0.1 Terminal Arrangement /Internal Connections (Top View) 4 0.7 0.5 12.5±0.5 13.8±0.5 4 4.5 0.3 1 1 9±0.1 0.25 13.5±0.5 0.25 Precautions • • • • • 5±0.1 9±0.1 13.8±0.1 5±0.2 7.3±0.2 6.3 3 4 3.5 Surface Illumination Type B3F-9100, -9200, -9300 • (Top View) 7.3±0.2 0.3 3.5 Five 1.2±0.0 5 Terminal Arrangement /Internal Connections dia 12.5±0.1 Do not apply additional force to the plunger once it has stopped moving. Solder at 260°±5°C within five seconds and within two tries. Do not wash the switches. The switches may be damaged by solvents if either wiped off using solvents or immersed in solvents. Do not allow flux or flux foam to penetrate onto the component side of the PCB. Use a single-sided PCB with a thickness of 1.6 mm. The switches may be damaged due to instability or heat from soldering if other PCBs (other thickness or through holes) are used. If it is necessary to use another PCB, test the compatibility and processing in advance. The switches are not sealed and should be protected with a resin sheet as shown below when used in dust-prone environments. Keytop Resin sheets Switch 2 1 1 9±0.1 1 5