Quartz Crystal Units HC-49/U & HC-49/UT FAMILY STANDARD THROUGH-HOLE CRYSTALS STANDARD SPECIFICATIONS Frequency tolerance (at +25゜ C ±3゜ C) ∆f/F Actual size 0.975 gm (wt.) HC-49 / UT Temperature stability (referred to +25゜ C) Note : Contact for other temperature stabilities and operating temperature ranges. Load capacitance Shunt capacitance Drive level Aging (for first year) Cut CL C0 P ∆f/F Actual size 0.9075 gm (wt.) HC-49 / U, HC-49 / UT ESR 3.8 max. H 3rd overtone 5th overtone PART NUMBERING GUIDE 11.3 max. 49 M 2.4576M - 16 / T / XXggg 12 min. 4.9 max. 0.43 Holder type Circuit calibration condition +0.05 -0.03 Frequency Holder HC-49/U HC-49/UT H 13.5 mm max. 11.2 mm max. AT-CUT SMI Part No. Holder 49M2.4576M-16/T/XXggg 49 = HC-49/U 49M9.84375M-20/Q/TTiii (ppm) 49TS19.6608M/O/QQiii +100 +80 Circuit Calibration Condition 49 = HC-49/U 49T = HC-49/UT M = Parallel resonance CL = 16pF M = Parallel resonance CL = 20pF S = Series resonance Frequency Frequency Tolerance Temperature Stability 2.4576 MHz T = ±30 ppm XXggg = ±50 ppm 9.84375 MHz Q = ±15 ppm TTiii = ±30 ppm 19.6608 MHz O = ±10 ppm QQiii = ±15 ppm +40 +20 Item 0 -20 Cover -40 Base -60 Holder Sealing -80 -30 -15 0 +15 +30 +45 +60 TYPICAL TEMPERATURE CHARACTERISTICS +75 C) +90 (゜ Terminal lead Terminal lead plating RoHS MCF HOLDER DATA +60 -100 -45 Load capacitance (CL) Example 4.88±0.2 ∆f/f Temperature stability Frequency tolerance OCXO 10.5 max. Fundamental Equivalent Series Resistance XTAL F Specifications HC-49/U HC-49/UT 13.5 mm max. 11.2 mm max. 1.8432 MHz to 200.000 MHz J : ±5 ppm O : ±10 ppm Q : ±15 ppm R : ±20 ppm T : ±30 ppm X : ±50 ppm XXggg : ±50 ppm over -10゜ C to +60゜ C TTiii : ±30 ppm over -20゜ C to +70゜ C ± RRiii : 20 ppm over -20゜ C to +70゜ C QQiii : ±15 ppm over -20゜ C to +70゜ C OOiii : ±10 ppm over -20゜ C to +70゜ C 20 pF, Typical 7.0 pF max. 3 mW max. ±5 ppm max. at +25゜ C ±3゜ C per year AT-Cut 1.8432 MHz+ : 500 Ω max. 2.000 MHz+ : 400 Ω max. 2.500 MHz+ : 250 Ω max. 3.000 MHz+ : 180 Ω max. 3.500 MHz+ : 100 Ω max. 4.000 MHz+ : 80 Ω max. 4.500 MHz+ : 60 Ω max. 5.000 MHz+ : 50 Ω max. 6.000 MHz+ : 40 Ω max. 7.000 MHz+ : 30 Ω max. 9.000 MHz+ : 25 Ω max. 13.000 MHz+ : 20 Ω max. 20.000 to 120.000 MHz : 60 Ω max. 80.000 to 200.000 MHz : 80 Ω max. CLK OSC Symbol VCXO Item Holder type Holder height Frequency range TCXO HC-49 / U HC-49/U & HC-49/UT Metal Metal Resistance Alloy (FeNiCo) SnCu Compliant (Pb-free) 49