MEDER electronic MK17 Series Reed Sensors for SMD Mounting DESCRIPTION MK17 are magnetically operated Reed proximity switches for SMD mounting. APPLICATIONS • Electronic PCB’s where all components are surface mounted • Telecommunication applications Hook switch in mobile and hard-wired phones • Switching element in microphones • Lead design 1: Flat, straight leads for PCB slot mounting. • Lead design 2: Flat, bent SMD leads. • Lead design 3: J-Lead. The sensors are supplied taped & reeled according to IEC 286/part 3 suitable for auto-placement. The special features of this series are the small dimensions of only 12.5 x 2.1 x 2.1mm and the simple internal structure. FEATURES • • • • • Two operate sensitivities available Tape and Reel available Excellent for low power operations No external power required for sensor operation UL approved DIMENSIONS All dimensions in mm [inch] Recommended Pad Layout www.meder.com 260 MEDER electronic MK17 Series Reed Sensors for SMD Mounting ORDER INFORMATION Part Number Example MK17 - B - 1 B is the magnetic sensitivity 1 is the lead design Series Magnetic Sensitivity Lead Design MK17 - x- x Options B, C, D, E 1, 2, 3 MAGNETIC SENSITIVITY Sensitivity class Pull In AT Range B 10 - 15 C 15 - 20 D 20 - 25 E 25 - 30 TAPE & REEL www.meder.com 261 MEDER electronic MK17 Series Reed Sensors for SMD Mounting SOLDERING INFORMATION reflow soldering conditions according JEDEC norm J-STD-020C 40 s 260 oC 183 oC 125 oC Ramp up: max. 6K/s 120 s 120-180 s www.meder.com 262 Ramp down: max. 8/Ks MEDER electronic MK17 Series Reed Sensors for SMD Mounting CONTACT DATA All Data at 20° C Contact Form → Contact Ratings Conditions Form A Min. Typ. Max. Units Switching Power Any DC combination of V & A not to exceed their individual max.‘s 10 W Switching Voltage DC or peak AC 100 V Switching Current DC or peak AC 0.5 A Carry Current DC or peak AC 0.5 A Static Contact Resistance w/ 0.5 V & 10 mA 200 mΩ Dynamic Contact Resistance Measured w/ 0.5 V & 50 mA , 1.5 ms after closure 250 mΩ Insulation Resistance across Contacts 100 volts applied 109 Ω Breakdown Voltage across Contact Voltage applied for 60 sec. min. 210 VDC Operate Time incl. Bounce Measured w/ 100 % overdrive 0.6 ms Release Time Measured w/ no coil suppression 0.1 ms Capacitance at 10 kHz cross contact 0.2 pF Contact Operation * Must Operate Condition Steady state field 10 30 AT Must Release Condition Steady state field 4 18 AT Environmental Data Shock Resistance 1/2 sinus wave duration 11 ms 30 g Vibration Resistance From 10 - 2000 Hz 20 g Ambient Temperature 10°C/ minute max. allowable -40 130 o C Stock Temperature 10°C/ minute max. allowable -50 130 o C Soldering Temperature 5 sec. dwell 260 o C Please note: The indicated electrical data are maximum values and can vary downwards when using a more sensitive switch. * These ranges refer to the uncut / unmodified Reed Switches described in our Reed Switch section. Consult factory if more detail is required. www.meder.com 263