Tactile Switches KMR 2 Series Microminiature SMT Top Actuated Features/Benefits Typical Applications • Automotive • Small footprint • Industrial electronics • 4 actuation forces • Excellent tactile feel • Medical equipment • Ultra low current capabilities • IP40 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 Operating Type G and NG Operating CONTACT RESISTANCE: ≤ 100 mΩ force life See description INSULATION RESISTANCE: ≥ 1GΩ Travel (mm) N (grs) (cycles) below BOUNCE TIME: ≤ 3 ms KMR211 LFS 1.2 (120) ± 0.30 200,000 0.20 mm ± 0.1 *For ULC version minimum current is 1µA at 1.8 VDC KMR211 ULC LFS 1.2 (120) ± 0.30 200,000 0.20 mm ± 0.1 KMR213 LFG 1.2 (120) ± 0.30 200,000 0.20 mm ± 0.1 Environmental Silver Gold KMR213 ULC LFG 1.2 (120) ± 0.30 200,000 0.20 mm ± 0.1 KMR221 LFS 2.0 (200) ± 0.50 200,000 0.25 mm ± 0.1 OPERATING TEMPERATURE: -40˚C to 85˚C -40˚C to 125˚C KMR221 ULC LFS 2.0 (200) ± 0.50 200,000 0.25 mm ± 0.1 STORAGE TEMPERATURE: -55˚C to 85˚C -55˚C to 125˚C KMR223 LFG 2.0 (200) ± 0.50 200,000 0.25 mm ± 0.1 KMR223 ULC LFG 2.0 (200) ± 0.50 200,000 0.25 mm ± 0.1 KMR231 LFS 3.0 (300) ± 0.75 150,000 0.25 mm ± 0.1 Process KMR231 ULC LFS 3.0 (300) ± 0.75 150,000 0.25 mm ± 0.1 Soldering: Lead free reflow soldering process in accordance with KMR232 LFS 3.0 (300) ± 0.75 300,000 0.25 mm ± 0.1 KMR232 ULC LFS 3.0 (300) ± 0.75 300,000 0.25 mm ± 0.1 IEC 61760-1. KMR233 LFG 3.0 (300) ± 0.75 150,000 0.25 mm ± 0.1 KMR233 ULC LFG 3.0 (300) ± 0.75 150,000 0.25 mm ± 0.1 Packaging KMR241 LFS 4.0 (400) ± 1.00 100,000 0.30 mm ± 0.1 KMR241 ULC LFS 4.0 (400) ± 1.00 100,000 0.30 mm ± 0.1 In reels of 7,000 pieces KMR242 LFS 4.0 (400) ± 1.00 200,000 0.30 mm ± 0.1 External diameter 330 mm ± 2 mm KMR242 ULC LFS 4.0 (400) ± 1.00 200,000 0.30 mm ± 0.1 KMR243 LFG 4.0 (400) ± 1.00 100,000 0.30 mm ± 0.1 NOTE: Specifications listed above are for switches with standard options. KMR243 ULC LFG 4.0 (400) ± 1.00 100,000 0.30 mm ± 0.1 For information on specific and custom switches, consult Customer Service Center. TACTILE FEELING: KMR 2 series with actuation force in 2N - 3N - 4N: ≥ 30% KMR 2 series with actuation force in 1.2N: ≥ 20% Part Number Description For any part number different from those listed above, please consult your local representative. K M R 2 Total height 2 1,9 mm LFS Lead free compatible, silver plated LFG Lead free compatible, gold plated Actuation Force 1 1.2 N (120 grams) 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 * Silver long life is available in 3N and 4N actuation force. For other versions, please contact Customer Service. Dimensions are shown: mm Specifications and dimensions subject to change 8 jun 16 www.ckswitches.com B–11 KMR 2 Series Microminiature Tact Switch for SMT KMR 2 Series - 1.9 mm height PCB layout shown with ground pin option 4,6 B 4,2 2,11 3,2 1,7 5 TAPE & REEL DE-REELING DIRECTION SECTION A-A OUT OF THE TAPE 0 7 max 2,13 ± 0,1 4 ± 0,1 2 ± 0,05 ø 1,5 ± 0,1 B A A 0 6 max +0,25 B 0,292 ± 0,02 ø 1,5 GROUND TERMINAL 0 3,03 ± 0,1 DIRECTION OF FEED Dimensions are shown: mm Specifications and dimensions subject to change 8 jun 16 www.ckswitches.com B–12 Tactile Switches 2,8 2,45 0,55 0,6 0,6 +0,3 12 -0,1 5,5 ± 0,05 1,75 1,61 1,4 1 0,6 2,2 1,9 2,6 4,95 ± 0,1