QX-4025 (4*2.5*0.8mm)
Features£º	Ultrathin thickness 0.8mm.
	It is a completely sealed type with a metal case sealed on a ceramic board.
	Automatic mounting is possible.
	Low impedance performance.
	Reflow is possible.
Type		QX-4025 (4*2.5*0.8mm)
Frequency range		12.0~50.0 MHz
Vibration mode		AT cut, Fundamental, 3`rd
Frequency tolerance£¨at 25 ¡ÆC£©		¡¾10 ppm~
Equivalent series resistance		See table No.1
Stability(-20-+70 ¡ÆC)		¡¾10 ppm~
Shunt capacitance		7.0 pF max.
Load capacitance		Series resonance£¬16pF£¬20pF£¬30pF
Insulation resistance		500 §Û //DC 220 V
Shock		Natural drop from 75cm height onto a hard wooden
		board, three times dF/F=¡¾3ppm max.
Vibration		The crystal units shall be capable of with standing each one hour in 3 directions 10~55Hz amplitude 1.5mm Fs=¡¾3.0ppm max.
		ESR£º¡¾2.0 ohms or 15% whichever is larger
Leak		5*10-8 atm.cc/sec max.
Aging		¡¾2 ppm / year£¬¡¾5 ppm / year
Equivalent series resistance(ESR) Table No.1
Frequency		Mode	ESR
12.0~15.0 MHz		Fundamental	60 ohms max.
16.0~20.0 MHz		Fundamental	40 ohms max.
21.0~50.0 MHz		Fundamental	30 ohms max.