Tactile Switches KMR 4 Series Microminiature SMT Top Actuated Features/Benefits Typical Applications Long Life version Automotive 4 actuation forces Cellular phones Optional ground pin Industrial electronics Ultra low current capabilities Medical equipment Excellent tactile feel B Specification Electrical Silver Gold FUNCTION: momentary action MAXIMUM POWER: 1 VA 0.2 VA CONTACT ARRANGEMENT: 1 make contact = SPST, N.O. MAXIMUM VOLTAGE: 32 VDC 32 VDC MINIMUM VOLTAGE: 20 mVDC 20 mVDC TERMINALS: Gullwing type for SMT MAXIMUM CURRENT: 50 mA 10 mA MINIMUM CURRENT: 1 mA* 1 mA* Mechanical DIELECTRIC STRENGTH: 250 Vrms Type G and NG CONTACT RESISTANCE: 100 m (except gold INSULATION RESISTANCE: 1G Operating Operating version G only) force life Travel (mm) BOUNCE TIME: 3 ms See description N (grs) (cycles) *For ULC version minimum current is 1A at 1.8 VDC below KMR421 LFS 2.0 (200) 0.50 200 000 0.25 mm 0.1 Environmental Silver Gold KMR431 LFS 3.0 (300) 0.75 150 000 0.30 mm 0.1 KMR431 ULC LFS 3.0 (300) 0.75 150 000 0.30 mm 0.1 OPERATING TEMPERATURE: -40C to 85C -40C to 125C KMR432 LFS 3.0 (300) 0.75 300 000 0.30 mm 0.1 STORAGE TEMPERATURE: -55C to 85C -55C to 125C KMR432 ULC LFS 3.0 (300) 0.75 300 000 0.30 mm 0.1 KMR441 LFS 4.0 (400) 1.00 100 000 0.35 mm 0.1 Process KMR441 ULC LFS 4.0 (400) 1.00 100 000 0.35 mm 0.1 Infrared Reflow Soldering in accordance with IEC61760-1 KMR442 LFS 4.0 (400) 1.00 200 000 0.35 mm 0.1 KMR442 ULC LFS 4.0 (400) 1.00 200 000 0.35 mm 0.1 Packaging In reels of 6,000 pieces for KMR 4 External diameter 330 mm 2 mm TACTILE FEELING: for KMR 4 series: 25% NOTE: Specifications listed above are for switches with standard options. For information on specific and custom switches, consult Customer Service Center. Part Number Description For any part number different from those listed above, please consult your local representative. K M R 4 3 1 N G U L C L F S Total height 4 2,5 mm LFS Lead free compatible, silver plated LFG Lead free compatible, gold plated Actuation Force 2 2 N (200 grams) 3 3 N (300 grams) 4 4 N (400 grams) Low Current capability Void Under standard specification Contact Material ULC Low current 1 Silver 2 Silver long life Grounding option 3 Gold G Ground pin NG No Ground pin Dimensions are shown: Inch (mm) Specifications and dimensions subject to change www.ck-components.com B11KMR 4 Series Microminiature Tact Switch for SMT KMR 4 Series - 2.5 mm height PCB layout shown with ground pin option B 3,2 1,7 5 B 1 3 B 4,6 4 2 4,2 5 2,11 TAPE & REEL DE-REELING DIRECTION SECTION A-A OUT OF THE TAPE 0 6 max 2,75 0,1 4 0,1 2 0,05 1,5 0,1 B A A 0 6 max B 0,292 0,02 GROUND TERMINAL 3,03 0,1 Dimensions are shown: Inch (mm) Specifications and dimensions subject to change www.ck-components.com B12 Tactile Switches 2,8 0,2 0,6 0,6 +0,3 12 -0,1 5,5 0,05 1,75 1,61 1,4 0,15 2,2 2,5 0,2 0,55 2,45 0,6 1 2,6 4,95 0,1