Model 12M1A Piezoelectric accelerometer - OEM Features Description • Low cost/OEM applications • High output efficiency • Light weight (120 mg) • For SMT installation The Endevco model 12M1A Picochip™ is a high performance piezoelectric accelerometer packaged as a surface mount chip component. The unit is engineered for integration in standard hybrid or SMT electronics packages along with custom designed signal conditioning circuits, allowing the user to create miniaturized shock and vibration measurement systems in one completely integrated package. The model 12M1A 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 two thick film gold metalized mounting pads on the bottom surface of the alumina case. The unit is designed to be mounted with conductive adhesives or solder. Since the model 12M1A is a high impedance piezoelectric device, extreme care must be exercised in shielding it from stray electromagnetic noise. TYPICAL AMPLITUDE RESPONSE 0.180 ±0.005 30 25 20 15 10 % DEVIATION 0.150 ±0.005 5 0 -5 -10 -15 0.055 ±0.010 -20 -25 (-) a 1 (+) 10 100 -30 10000 100 0 FREQUENCY IN HERTZ TYPICAL TEMPERATURE RESPONSE (-) 40 (+) .080 .040 20 % D EVI O N ATI .080 .040 30 CAPACITANCE mounting surface 10 CHARGE SENSITIVITY 0 -10 -20 All dimensions are in inches Shaded areas denote gold metallization (+) and (-) indicates output polarity for an acceleration indicated by the bold arrow -100 (-73) 0 (-18) 100 (38) TEMPERATURE 200 (93) °F ( °C) -30 300 (149)

Model 12M1A Piezoelectric accelerometer - OEM 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 1.9 Minimum pC/g 1.4 Maximum pC/g 2.4 Frequency response See typical amplitude response Resonance frequency kHz 9 Amplitude response ±5% [1] Hz 1 to 2000 Temperature response See typical curve Transverse sensitivity % ≤5 Electrical...