M49 ML49 [ 12.4 * 4.5 * 4.0 mm ] [ 12.4 * 4.5 * 3.0 mm ] Min. Surface Mount Crystals Fund. 3rd O.T. Max. 3.2MHz 70MHz Features Specifications ● High frequency fundamental mode is available in BT-cut ● Withstands solder reflow and is available in EIA-481A tape and ree .l ● AT-strip crystal inside. Optimized for low spurious. ● Lowest cost among all Mercury SMD crystals General Specifications M49 ( 12.4 * 4.5 * 4.0mm ) , ML49 ( 12.4 * 4.5 * 3.0mm ) series Item / Type 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 ) Series or Parallel ( 8 to 32 pF ) resonance Load Capacitance Drive Level 10μ W typica ( 100μ 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 ESR ( Equivalent Series Resistance ) Frequency stability Vs Operating temperature range 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 Freq.(MHz) ○ : available ; ▲ : contact Mercury Outline Dimensions ( 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]