Quartz Crystal [ Surface Mount Crystals ] M49 series SMD type ( 2 pads ) 12.4 x 4.5 x 4.0 mm Applications ● ● ● High frequency fundamental mode is available in BT-cut Withstands solder reflow and is available in EIA-481A tape and reel . AT-strip crystal inside. Optimized for low spurious. General Specifications Paramenters Electrical Spec. Item / Type M49 ( 12.4 * 4.5 * 4.0 mm ) 3.2.000 ~ 48.000 MHz , AT-cut , Fundamental Mode ( see Table 1 ) Frequency Range & Crystal Cut 27.000 ~ 70.000 MHz , AT-cut , 3rd overtone ( see Table 1 ) 24.000 ~ 48.000 MHz , BT-cut , Fundamental Mode ( see Table 1 ) Load Capacitance Series or Parallel ( 8 to 32 pF ) resonance Drive Level 100μ W typical ( 500μ W max. ) Frequency Tolerance ± 5 ppm , ± 10 ppm , ± 20 ppm or ± 30 ppm at 25°C Frequency Stability See Table 2 Aging △F / F : ±3 ppm / year ( max. ) Storage Temperature Range - 50°C to 105°C Table 2 Table 1 Frequency stability Vs Operating temperature range ESR ( Equivalent Series Resistance ) Freq.(MHz) Osc. Mode E.S.R. Freq.(MHz) Osc. Mode E.S.R. Stability code Temp. (ºC) \ ppm ± 10 ± 15 ± 20 ± 25 ± 30 3.2 ~ 3.4 AT , Fund. 300 Ω 24.0 ~ 48.0 BT , Fund. 40 Ω X -10 to 60°C ○ ○ ○ ○ ○ 3.5 ~ 6.0 AT , Fund. 120 Ω 27.0 ~ 30.0 AT , 3rd 150 Ω Y -20 to 70°C ▲ ○ ○ ○ ○ 6.1 ~ 10.0 AT , Fund. 60 Ω 30.1 ~ 50.0 AT , 3rd 100 Ω I -40 to 85°C ○ ○ ○ ○ 10.1 ~ 30.0 AT , Fund. 40 Ω 50.1 ~ 70.0 AT , 3rd 80 Ω Outline Dimensions ○ : available ; ▲ : contact Mercury ( Unit : mm ) Mercury www .mercury-crystal.com ■Taiwan : Tel (886)-2-2406-2779 / [email protected] ■U.S.A: Tel: (1)-909-466-0427 / [email protected] ■China: Tel: (86)-512-5763-8100 / [email protected]