KMR 4 Series Microminiature SMT Top Actuated Features/Benefits • Long Life version • 4 actuation forces • Optional ground pin • Ultra low current capabilities • Excellent tactile feel Typical Applications • Automotive • Cellular phones • Industrial electronics • Medical equipment B Electrical FUNCTION: momentary action CONTACT ARRANGEMENT: 1 make contact = SPST, N.O. TERMINALS: Gullwing type for SMT MAXIMUM POWER: MAXIMUM VOLTAGE: MINIMUM VOLTAGE: MAXIMUM CURRENT: MINIMUM CURRENT: DIELECTRIC STRENGTH: CONTACT RESISTANCE: INSULATION RESISTANCE: BOUNCE TIME: Mechanical Type G and NG (except gold version G only) See description below KMR421 LFS KMR431 LFS KMR431 ULC LFS KMR432 LFS KMR432 ULC LFS KMR441 LFS KMR441 ULC LFS KMR442 LFS KMR442 ULC LFS Operating force N (grs) Operating life (cycles) Travel (mm) Silver Gold 1 VA 32 VDC 20 mVDC 50 mA 1 mA* ≥ 250 Vrms ≤ 100 mΩ ≥ 1GΩ ≤ 3 ms 0.2 VA 32 VDC 20 mVDC 10 mA 1 mA* *For ULC version minimum current is 1µA at 1.8 VDC 2.0 3.0 3.0 3.0 3.0 4.0 4.0 4.0 4.0 (200) (300) (300) (300) (300) (400) (400) (400) (400) ± ± ± ± ± ± ± ± ± 0.50 0.75 0.75 0.75 0.75 1.00 1.00 1.00 1.00 200 150 150 300 300 100 100 200 200 000 000 000 000 000 000 000 000 000 0.25 0.30 0.30 0.30 0.30 0.35 0.35 0.35 0.35 mm mm mm mm mm mm mm mm mm ± ± ± ± ± ± ± ± ± 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 Environmental Silver Gold OPERATING TEMPERATURE: STORAGE TEMPERATURE: -40˚C to 85˚C -55˚C to 85˚C -40˚C to 125˚C -55˚C to 125˚C Process Infrared Reflow Soldering in accordance with IEC61760-1 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 Total height 4 2,5 mm C L F S 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) Contact Material 1 Silver 2 Silver long life 3 Gold Low Current capability Void Under standard specification ULC Low current Grounding option G Ground pin NG No Ground pin Dimensions are shown: Inch (mm) Specifications and dimensions subject to change B–11 www.ck-components.com Tactile Switches Specification KMR 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 2 2,45 4,6 2,6 4 0,6 1 1 2,5 ± 0,2 1,4 ± 0,15 B 3 4,2 2,2 1,61 2,8 ± 0,2 0,6 5 0,6 2,11 TAPE & REEL DE-REELING DIRECTION SECTION A-A OUT OF THE TAPE 60 max 2,75 ± 0,1 4 ± 0,1 2 ± 0,05 ø 1,5 ± 0,1 1,75 B 4,95 ± 0,1 5,5 ± 0,05 +0,3 12 -0,1 Tactile Switches B 0,55 5 A A 60 max 0,292 ± 0,02 B GROUND TERMINAL 3,03 ± 0,1 Dimensions are shown: Inch (mm) Specifications and dimensions subject to change B–12 www.ck-components.com