SQ-ASx Axial Shock & Acceleration Sensor
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SQ-ASX SERIES ON/OFF SHOCK AND ACCELERATION SENSOR RoHS compliant, lead-free SMD package DESCRIPTION The SQ-ASx series act like acceleration sensitive switches that open or close when accelerated past an acceleration threshold. The sensor can be used to produces CMOS or TTL pulses to interrupt (wake up) a microcontroller. Alternatively, these pulses can be counted to estimate the amount and duration of activity. The sensor is fully passive, requires no signal conditioning, and operates with zero current or only 0.25 μA depending on model. On / off shock & acceleration sensing FUNCTIONAL DIAGRAM FEATURES Zero power- and nanopower models Surface mount device (SMD) - RoHS compliant, lead-free, tape and reel High sensitivity & long life - 99.9% pure gold plating Miniature size - 3.3 mm x 6.9 mm Simple interface - No signal conditioning required Multiple sensitivities - 10 G to 150 G standard From 2 G – 2000 G *G = acceleration of gravity PATENTS Patented. US 7326866, 7067748, 7326867, 7421793. Patents pending. Opens when accelerated on either axis or radially Closes when accelerated on axis Closes when accelerated on either axis* or radially ASE SERIES Radially sensitive, normally open SWITCH ACCELERATIONS ASB SERIES Omnidirectional, normally closed ASD SERIES Omnidirectional, normally open Shock and acceleration detection Shock & acceleration triggered wake up GPS, RFID, alarms, automotive security, antitamper Opens when accelerated on axis ASC SERIES Axial sensitive, single ended, normally open ASA SERIES Axial sensitive, single ended, normally closed Closes when accelerated radially * See Theory of Operation for more details. 10 Water St. Lebanon, NH 03766 USA Page 1 of 7 www.signalquest.com info@signalquest.com

SQ-ASX SERIES ON/OFF SHOCK AND ACCELERATION SENSOR 10 Water St. Lebanon, NH 03766 USA Page 2 of 7 www.signalquest.com info@signalquest.com

SQ-ASX SERIES ON/OFF SHOCK AND ACCELERATION SENSOR ELECTRICAL CHARACTERISTICS PARAMETER MIN MAX UNITS Supply Voltage Range 0.5 12 Vdc Current Sink* 0.00025 5 mA * Current consumption is determined by the resistance of the application circuit and the supply voltage. DIMENSIONS PHYSICAL SIZE SYMBOL Terminal Width 10 Water St. Lebanon, NH 03766 USA Page 3 of 7 www.signalquest.com info@signalquest.com

SQ-ASX SERIES ON/OFF SHOCK AND ACCELERATION SENSOR EXAMPLE PCB LANDING RECOMMENDED PCB LANDING ALTERNATE, PCB CUTOUT LANDING (USE FOR LOWEST PROFILE) Recess Length Recess Width *Note: Alternative layouts may be used to optimize size or manufacturability 10 Water St. Lebanon, NH 03766 USA Page 4 of 7 www.signalquest.com info@signalquest.com

SQ-ASX SERIES ON/OFF SHOCK AND ACCELERATION SENSOR THEORY OF OPERATION SQ-ASA The SQ-ASA series sensor is a normally closed device. It is designed to be sensitive only in one direction. However, it will exhibit some off axis sensitivity. Typical cross axis open signals are in the 2 – 8 mS range, where on axis open signals are proportional to the duration of acceleration above the threshold. SQ-ASB The SQ-ASB series sensor is a normally closed device. It is designed to be sensitive in all directions. It is about 4 times more sensitive off axis than on axis. Typical cross axis open signals...

SQ-ASX SERIES ON/OFF SHOCK AND ACCELERATION SENSOR PART COMPARISON PART NUMBER Normally closed One axis, single sided Normally closed Normally closed Normally closed Omnidirectional Omnidirectional Omnidirectional ACCELERATION THRESHOLD (ON AXIS) 150 G 5 - 20 G CROSS AXIS SENSITIVITY Crackle at 75 G, less than < 10 mS pulse width 2-5G PRODUCTION GRADES GRADE C ASSEMBLY METHOD Reflow Solder: 260° C peak Hand Assembly: 315° C peak, 2 -3 seconds on end terminal Reflow Solder: 260° C peak Hand Assembly: 315° C peak, 2 -3 seconds on end terminal WASH TOLERANCE PB-FREE, ROHS OPERATING TEMPERATURE...

SQ-ASX SERIES ON/OFF SHOCK AND ACCELERATION SENSOR LIMITATIONS AND WARNINGS This product is not designed for use in life support and/or safety equipment where malfunction of the product can reasonably be expected to result in personal injury or death. Buyer uses this product in such applications at Buyer’s own risk and agrees to defend, indemnify, and hold harmless SignalQuest, Inc. from any and all damages, claims, suits, or expenses resulting from such misuse. TESTING The performance of each sensor is verified through build-time testing. SYSTEM INTEGRATION TESTING Thorough testing should...