HIGH TEMPERATURE CRYSTALS High Temperature/Extensional Design DESCRIPTION An increasing number of applications require the use of hightemperature crystals. For these applications, Statek offers the CX1HT EXT and CX4HT EXT crystals. These crystals are designed to operate at temperatures up to 200ºC, and feature an expected life in excess of 1,000 hours at these temperatures. The frequency range offered is 530 kHz to 2.1 MHz for CX1HT EXT crystals and 600 kHz to 2.5 MHz for CX4HT EXT crystals. CX1HT EXT CX4HT EXT 530 kHz - 2.1 MHz 600 kHz - 2.5 MHz FEATURES High temperature operation up to 200OC High shock resistance Low EMI emission Hermetically sealed ceramic package DIMENSIONS CX1HT EXT MAXIMUM CX4HT EXT MAXIMUM APPLICATIONS DIM inches mm inches mm Industrial A 0.330 8.38 0.210 5.33 B 0.155 3.94 0.085 2.16 C (SM1) 0.070 1.78 0.050 1.27 C (SM5) 0.075 1.90 0.053 1.35 D 0.055 1.40 0.046 1.16 E 0.070 1.78 0.020 0.51 0.025 0.64 Downhole instrumentation Rotary shaft sensors Underground boring tools F PACKAGE DIMENSIONS CX1HT EXT CX4HT EXT SUGGESTED LAND PATTERN CX1HT EXT CX4HT EXT 10185 Rev B STATEK CORPORATION 512 N. MAIN ST., ORANGE, CA 92868 714-639-7810 FAX: 714-997-1256 www.statek.com SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS Specifications are typical at 25OC unless otherwise noted. Specifications are subject to change without notice. Storage Temperature Maximum Process Temperature Frequency Range -55OC to 125OC 260OC, 20 seconds See Specifications Table below Calibration Tolerance 1 + _ 500 ppm (0.05%) + _ 1000 ppm (0.1%) CONVENTIONAL CMOS PIERCE OSCILLATOR CIRCUIT + _ 10000 ppm (1.0%) 3 µW MAX Drive Level Load Capacitance2 7 pF 2 Turning Point (T0) 35OC Temperature Coefficient (k) -0.035 ppm/OC2 Note: Frequency f at temperature T is related to frequency f0 at 2 turning point temperature T0 by: f-fo = k(T-To) fo Function Mode Aging, first year Typical Expected Lifetime Shock, survival CX1HT EXT: CX4HT EXT: Vibration, survival Operating Temp. Range Extensional 5 ppm MAX 1,000 hours @ 200OC 750 g, 0.3 ms, 1/2 sine 1,500 g, 0.3 ms, 1/2 sine 10 g RMS, 20-1,000 Hz random -10OC to +70OC (Commercial) -40OC to +85OC (Industrial) -55OC to +125OC (Military) PACKAGING OPTIONS CX1HT EXT, CX4HT EXT - Tray Pack - 16 mm tape, 7” or 13” reels Per EIA 481 (see Tape and Reel data sheet # 10109) 1. Tighter tolerances available. 2. Other values available. SPECIFICATIONS TABLE1 (Specifications shown are typical unless otherwise noted.) Frequency Range Motional Resistance R1 @ 25°C 530 kHz to 500 Ω @ 1.0 MHz CX1HT EXT 2.1 MHz 300 Ω @ 1.8432 MHz 600 kHz to 300 Ω @ 600 kHz CX4HT EXT 2.5 MHz Motional Capacitance Shunt Capacitance C1 @ 25°C C0 @ 25°C Quality Factor Q @ 25°C 2.0 fF @ 1.0 MHz 190 K @ 1.0 MHz 1.1 pF @ 1.0 MHz 2.8 fF @ 1.8432 MHz 1.3 pF @ 1.8432 MHz 110 K @ 1.8432 MHz 7 pF 2.3 fF @ 32.768 kHz 500 Ω @ 1.8432 MHz Load Capacitance CL Load 1.0 fF @ 100 kHz Turnover Temp. (To) (°C) Drive Level 35°C 3 µW MAX. 35°C 3 µW MAX. 18 K @ 32.768 kHz 2.0 pF MAX. 31 K @ 100 kHz 9pF 1. For more detailed specifications on low frequency crystals, refer to standard crystal datasheets (CX1 EXT and CX4 EXT.) HOW TO ORDER CX1HT EXT and CX4HT EXT CRYSTALS CX1 HT S CX1 CX4 HT = High Temperature “S” if special or custom design. Blank if Std. SM5 Terminations* Blank = SM1 = Gold Plated SM5 = Solder Dipped (Lead Free) 1.8432 M, 500 Frequency M = MHz K = kHz Calibration Tolerance @ 250C (in ppm) / H Temp. Range: H = 250C to 2000C S = Customer Specified Temp. Range *Other terminations available. Contact factory. 10185 Rev B STATEK CORPORATION 512 N. MAIN ST., ORANGE, CA 92868 714-639-7810 FAX: 714-997-1256 www.statek.com