ECX-33QZ SMD Crystal The ultra-minature rugged ECX-33QZ compact SMD Crystal. The 3.2 x 2.5 x 0.8 mm ceramic package is ideal for harsh environments such as TPMS applications. Request a Sample ECX-33QZ SMD CRYSTAL Low Profile 3.2 x 2.5 mm Footprint Extended Temp. Range AEC-Q200 Qualified Automotive/TPMS Applications DIMENSIONS (mm) OPERATING CONDITIONS / ELECTRICAL CHARACTERISTICS PARAMETERS Frequency Frequency Tolerance Frequency Stability E.