SCC SMT Series Microstructure Pressure Sensors 0 psi to 5 psi through 0 psi to 100 psi The SCC SMT Series offers an extremely low-cost sensor The absolute devices have an internal vacuum reference and element with a temperature-stable output when driven with a an output voltage proportional to absolute pressure. The constant current source. These integrated circuit sensors were differential devices allow application of pressure to either side designed for extremely cost-sensitive applications where of the sensing diaphragm and can be used for gage or precise accuracy over a wide temperature range is not differential measurements. required. The 4-pin closed bridge configuration allows electrical The standard surface mount package includes an optional connection with additional pads provided for mechanical ported lid to fit in a variety of applications. support. Pulsed power is recommended to achieve maximum accuracy and conserve battery power in portable applications. FEATURES POTENTIAL APPLICATIONS • Low cost • Pneumatic controls • Small size • Automotive diagnostics • Internal temperature compensation • Medical equipment/instrumentation • Absolute or gage pressures • Dental equipment • High-impedance bridge • Environmental controls • Low power consumption • Barometric pressure measurement • Altimeters • Pneumatic controls • Battery powered equipment SCC SMT Series (1) PRESSURE SENSOR SPECIFICATIONS Characteristic Parameter Supply current, I 1.5 mA S Compensated temperature 0 °C to 50 °C [32 °F to 122 °F] Operating temperature -40 °C to 125 °C [-40 °F to 257 °F] Storage temperature -55 °C to 125 °C [-67 °F to 257 °F] Humidity 0% to 100% RH Lead temperature (soldering 2 s to 4 s) 250 °C [482 °F] (1) STANDARD PRESSURE RANGES (2) (3) Operating Maximum Pressure Sensitivity Unit Pressure Nominal Std. Dev. 0 psi to 5 psi 20 psi 7.50 ±0.68 mV/mA/psi 0 psi to 15 psi 30 psi 4.30 ±0.37 mV/mA/psi 0 psi to 30 psi 60 psi 2.90 ±0.57 mV/mA/psi 0 psi to 100 psi 150 psi 1.30 ±0.20 mV/mA/psi (1) PERFORMANCE SPECIFICATIONS Characteristic Min. Typ. Max. Unit Zero pressure offset (TA = 25 °C) -30.0 -10.0 20.0 mV (4) Linearity, hysteresis, repeatability -1.0 0.2 1.0 % FSS (5) Temperature effect on span -1.5 0.25 1.5 % FSS (5) Temperature effect on offset -2.0 .5 2.0 % FSS (6) Long-term stability of offset and span – 0.1 – % FSS (7) Response time (10% to 90%) – 0.1 – ms Input resistance (TA = 25 °C) 4.00 5.00 6.50 kΩ Output impedance 4.00 5.00 6.50 kΩ Notes: 1. Reference conditions: Supply current, I = 1.0 mA, T = 25 °C to 70 °C [32 °F to 158 °F], common-mode Line pressure = S A 0 psig, pressure applied to P1 unless otherwise noted. 2. If the maximum pressure is exceeded, even momentarily, the package may leak or burst, or the pressure sensing die may fracture. 3. Sensitivity is the ratio of the output signal voltage change to the corresponding input pressure change. The sensitivity is characterized by design and periodic production testing. This parameter in not 100% tested in production. 4. Linearity is based on best straight line fit. Hysteresis is the maximum output difference at any point within the operating pressure range for increasing and decreasing pressure. 5. Maximum error band of the offset voltage and the error of the band of the span over the compensated temperature range, relative to the 25 °C reading. Typical temperature coefficients for span and resistance are -2200 ppm/°C and 2200 ppm/°C, respectively. Temperature effects on offset and span are guaranteed by design. These parameters are not 100% tested in production. 6. Long term stability over a one year period. 7. Response time for 0 psi to full scale span pressure step change. 2 www.honeywell.com/sensing Microstructure Pressure Sensors MOUNTING DIMENSIONS (For reference only: mm [in].) LOW PROFILE SMT 0,70 7X 0,76 [.03] 3,30 [.03] 3,70 1,10 0,5 [.02] O O [.14] [.13] 8X 0,76 [.03] [.05] FOR GAGE PORT (P2) 3,80 + OUT [.15] 7,60 6,60 + EX [.26] [.30] - EX 3,30 - OUT [.13] 8X 1,27 [.05] 6,60 ON CENTER 2,00 PADS [.26] [.08] 3,30 7,60 [.13] [.30] PORTED “P” SMT 0,76 0,70 7X [.03] 0,5 [.02] [.03] 3,3 R0,3 1,01 0,76 FOR GAGE PORT (P2) 8X [.13] [.01] [.04] [.03] R0,3 [.01] + OUT 3,3 7,61 6,6 [.13] + EX [.30] [.26] 6,6 7,6 - EX [.26] [.30] 3,8 - OUT 2,05 [.15] ±0.76 [0.081 2,0 8,7 1,27 3,3 ±0.003] [.08] 8X [.34] [.05] ON CENTER [.13] PADS PORTED “LP” SMT 0,76 0,70 7X [.03] [.03] 0,5 [.02] 3,3 R0,3 1,01 0,76 FOR GAGE PORT (P2) 8X [.13] [.04] [.01] [.03] R0,3 [.01] + OUT 3,3 7,61 6,6 [.13] + EX [.30] [.26] 6,6 7,6 - EX [.26] [.30] 3,8 2,3 - OUT [.15] [.09] 2,0 8,7 1,27 [.08] 3,3 8X [.34] [.05] ON CENTER [.13] PADS EQUIVALENT CIRCUITS Vs - Out +Out Honeywell Sensing and Control 3 ORDER GUIDE WARNING WARNING MISUSE OF DOCUMENTATION PERSONAL INJURY • The information presented in this product sheet is for DO NOT USE these products as safety or emergency stop reference only. 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