Model 12m9 Piezoelectic accelerometer Features Description • For SMT Installation • Light Weight (85 mg) • High Output Efficiency • Low Cost/OEM Applications • Single connector, flexible cable The Endevco model 12M9 Picochip is a high performance piezoelectric accelerometer packaged for surface mounting. The unit is engineered for integration into standard hybrid electronics packages allowing the user to create miniaturized shock and vibration measurement systems. The model 12M9 features Endevco's Piezite type P-8 bimorph sensing element, operating in the bender mode, which provides low base strain sensitivity, low pyroelectric output, and extremely high charge output versus size. Contact to the sensing element is made through the top and bottom metalized surfaces. The unit is designed to be mounted with conductive adhesives or solder on the bottom surface and a solder or wire bond connection to the top surface. Since the model 12M9 is a high impedance piezoelectric device, extreme care must be exercised in shielding it from stray electromagnetic noise. TYPICAL AMPLITUDE RESPONSE 30 25 20 15 % DEVIATION 10 5 0 -5 -10 -15 -20 -25 1 10 100 FREQUENCY IN HERTZ -30 10000 1000 TYPICAL TEMPERATURE RESPONSE 40 30 CAPACITANCE % DEVIATION 20 10 CHARGE SENSITIVITY 0 -10 -20 -100 (-73) 0 (-18) 100 (38) TEMPERATURE ϒ (ϒ F C) 200 (93) -30 300 (149)

Model 12m9 Piezoelectric accelerometer Specifications The following performance specifications conform to ISA-RP-37.2 (1964) and are typical values, referenced at +75˚F (+24˚C) and 100 Hz, unless otherwise noted. Calibration data, traceable to National Institute of Standards and Technology (NIST), is supplied. Dynamic characteristics Units Charge sensitivity pC/g 1.5 Minimum pC/g 1.2 Maximum pC/g 1.8 Frequency response [1] See typical amplitude response Resonance frequency Minimum kHz 9.0 Maximum kHz 13.0 Temperature response See typical curve Transverse sensitivity % ≤5 Electrical characteristics...