MMS-B-2

MEDER electronic MMS Series Micro Machined Sensors DESCRIPTION The MMS is a ultra-small magnetically actuated reed sensor (SPST) that requires no power. It is manufactured by using semiconductor wafer technology. Its biggest advantages are the small dimensions with 4.8 mm x 2.05 mm (0.189’’x 0.081’’). APPLICATIONS • Medical pacemakers and insulin pumps • Telecommunications • CMOS gates and other low power signals switching FEATURES • SMT reed sensors (SPST) in miniature size • requires no power • ultra-small dimensions • designed for switching low power devices (max. 3 VDC) • 109 Ohm insulation resistance across the contacts • magnetic sensitivity ranges from 1.8 to 4.0 milliTesla • preferably packaged in tape & reel according to IEC 286/part 3, waffle package possible • electrostatic sensitive device!! All dimensions in mm [inches] unspecified tolerances +/- 0.1 mm Lead design 1 Lead design 2 DIMENSIONS www.meder.com 297 MMS Series Micro Machined Sensors MEDER electronic PAD LAYOUT Lead design 1+2 PACKAGING ORDER INFORMATION Part Number Example MMS - B - 1 B is the magnetic sensitivity 1 defines the lead design Series MMS Sensitivity Class B Lead Design 1,2 www.meder.com 298 MEDER electronic CONTACT DATA All Data at 20° C Contact Ratings Switching Power Switching Voltage Switching Current Carry Current Static Contact Resistance Insulation Resistance across Contacts Breakdown Voltage across Contacts Operate Time incl. Bounce Release Time Capacitance Life Expectancies Switching Voltage 1.5 V & 15 μA Magnetic Characteristics Pull-In Drop-Out Environmental Data Shock Resistance Vibration Resistance Ambient Temperature Stock Temperature Soldering Temperature Cleaning Packaging Tape & Reel Any direction From 10 - 2000 Hz 10°C/ minute max. allowable 10°C/ minute max. allowable 3.5 sec. at 5000 30 -20 -55 Ramped in 0.1 mT/ms steps Ramped in 0.1 mT/ms steps 1.8 0.5 4.0 3.2 107 Measured w/ 40 % overdrive Measured w/ no coil suppression at 10 kHz across contact MMS Series Micro Machined Sensors Contact Form --> Conditions Any DC combination of V & A not to exceed their individual max.‘s DC or peak AC DC or peak AC DC or peak AC Measured w/ 0.5 V & 50 μA 25 Volt applied Form A / Min. Typ. Dry Max. 0.3 3.0 100 100 Unit mW V μA μA Ω Ω VDC 50 109 50 1000 0.1 0.05 0.2 0.2 0.1 0.5 ms ms pF Cycles mT mT g g 100 150 260 fully sealed o C C C o o 17.78 mm Reel (7 inch), 12 mm width, 4 mm ptich A: Supplier Part Number B: Supplier Lot Number / Date Code C: Quantity Marking On Tape & Reel Packaging www.meder.com 299 MMS Series Micro Machined Sensors MEDER electronic ATTENTION These devices are especially designed for low voltage and low power switching! The following points must be respected when the device is connected in a circuit: • Voltage spikes (electrostatic or otherwise) across the terminals in the open mode are limited to 10 dv/dt • Switched voltages and current are limited to the maximum ratings • The parallel capacitance added across the switch is less than 100 pF • Minimize stray capacitance to less than 100 pF in any lead circuit • The mounting and test equipment are properly grounded, as they may induce voltage spikes across the terminals • All handling is performed on a conductive mat, and the operator is also grounded through a wrist contact bracelet • Permanent sticking or damage of the contacts may result whenever any of the above warnings is not respected. ATTENTION OBSERVE PRECAUTIONS FOR HANDLING ELECTRONSTATIC SENSITIVE DEVICES www.meder.com 300