Quartz Crystal Units 31SMX STANDARD 32.768kHz SMD CRYSTALS STANDARD SPECIFICATIONS 31SMX XTAL Item Symbol Part number P/N Package Type 31SMX Nominal frequency CLK OSC F Frequency tolerance (at +25゜ C) Actual size 0.0125 gm (wt.) 31SMX Load capacitance 1.5±0.1 3.2±0.2 H Package 31SMX 31SMXL 0.75 VCXO 0.75 Height (H) 0.8±0.1 mm Standard 0.6±0.1 mm Option Equivalent series resistance <Top View> Drive level Turnover temperature 1.7 SOLDERING PATTERN TCXO 1.8 2.5 XY-CUT (ppm) 0 -20 32.768 kHz AAA : ± 5 ppm AA : ±10 ppm ∆f/F A : ±15 ppm B : ±20 ppm C : ±30 ppm (Standard) 12.5 pF : 31M327 (Standard) 9.0 pF : 31M327-9 CL 7.0 pF : 31M327-7 6.0 pF : 31M327-6 70k Ω max. (To : -40゜ C to +85゜ C) (Standard) 80k Ω max. (To : -40゜ C to +105゜ C) (Option) ESR 80k Ω max. (To : -40゜ C to +125゜ C) (Option) 50k Ω max. (To : -40゜ C to +85゜ C) (R = Option) P 0.1 μW (0.5 μW max.) Tt +25゜ C ±5゜ C Temperature coefficient β C2, Typical -0.034 ppm / ゜ Quality factor Q 20000 min. Shunt capacitance C0 1.05 pF, max. Motional capacitance C1 0.0038 pF, Typical γ 273, Typical Aging (for first year) ∆f/F ±3 ppm max. at +25゜ C ±3゜ C Insulation resistance Ri 500 MΩ min. at 100V DC ±15V Operating temperature range To Storage temperature range Ts XY-Cut C to +85゜ C (Standard) -40゜ C to +105゜ C (W = Option) -40゜ C to +125゜ C (WW = Option) -40゜ C to +125゜ C -55゜ Capacitance ratio 1.0 Cut -40 -60 -80 OCXO ∆f/f -100 -120 -140 -160 -40 -25 -10 +5 +20 +35 +50 +65 +80 C) +110 (゜ TYPICAL TEMPERATURE CHARACTERISTICS TAPE SPECIFICATIONS ∅ 1.5 + 0 -0 .1 2.0±0.1 C A MCF B J M Shock resistance ∆f/F ±5 ppm max. Vibration resistance ∆f/F ±5 ppm max. IR reflow resistance ∆f/F ±10 ppm max. ( * ) For m el y 31M327( C ) ( * ) N o pat t er n path under neath the 31SMX PACKAGE DATA F A B C D F J L M Reel Dia. Qty/Reel 3.4 1.7 12.0 5.5 4.0 1.0 0.3 1.2 180 3000pcs Package Lid 31SMX Metal Base Ceramic Item Sealing Seam Terminal Tungsten (metalized) Gold / Nickel (surface) / (under) Compliant (Pb-free) Terminal plating RoHS 60 10 seconds max. at +250゜ C ±10゜ C Reflow condition D L 1.75±0.1 4.0±0.1 Specifications 31M327*