HC103M2 Fast High End Humidity Sensors for Radiosondes / Registering Balloons Tec hnical Da ta 160 ± 40 pF 0.55pF /% RH 0...100% RH -80...120°C (-112...248°F) < ± 2% RH 1.9 ± 0.25% RH response time t63 [sec] Nominal capacitance C0 (at 30°C / 86°F) Sensitivity Working range humidity temperature Linearity error (0...98% RH) Hysteresis Response time RH t63 temperature [°C] 1) Temperature dependence Loss tangent Maximum supply voltage Maximum DC voltage Operating frequency Packaging tray 101.6x101.6 mm (4x4”) tape and reel dC = -0.0019*RH*(T-30°C) [pF] < 0.05 5V max (UPP) < 5mV 10...100 kHz, recommended 20kHz 240 sensors refer to ordering guide 1) more details for t < -20°C on request The average increase of capacitance over the working range is 55pF. For the range of 0–98% RH linear approximation is possible, errors will be lower than < ± 2% RH. The sensor characteristic is determined by the following linear formula: capacitance [pF] Char acteristics C(RH) = C0 * [1+HC0 * RH] with HC0 = 3420 ± 250 ppm /% RH relative humidity [% RH] For high accuracy requirements, the sensitivity is determined by the following polynomial: C(RH) = C0 * [1 + HC0 * RH + K(RH)] whereby: V1.2 K(RH) = A1*RH+A2*RH1.5+A3*RH2+A4*RH2.5 A1 = 2.6657E-3 A2 = -9.6134E-4 -4 A3 = 1.1272E A4 = -4.3E-6 HC103M2 Mounting Instr uctions 1 mm = 0.03937” / 1” = 25.4 mm HC103M2 Dimensions (mm) gold plated contact through PCB opening HC103M2 contact area To allow full access of the air, the humidity sensor should be positioned over an opening in the printed circuit board (PCB). False readings because of humidity assimilation at the front side of the PCB should be avoided as much as possible by using gold-plated-through holes. Assemb ling and Soldering HC103M2 sensor series are designed for SMD automatic assembling with subsequent reflowsoldering. For more details please refer to mounting instructions. Recommended SMD equipment: · Automatic tooling machine with suction pipette · Optical control for sensor identification Or dering Guide Or der Example HC103M2 (103M2) tray (240 sensors) 500 sensors per reel HC HC103M2 HC103M2TR1 PACKAGING TYPE (no code) (TR0,5) 1000 sensors per reel (TR1) 2500 sensors per reel (TR2,5) 10000 sensors per reel (TR10) Type: Packaging: HC103M2 1000 sensors per reel