Krystaly, Hradec Králové, a.s.
 
Crystals in ceramic SMD packages image

Crystals in ceramic SMD packages

General application
Telecommunications, measuring devices, medical devices


Features
Small size ceramic package designed for SMD,
KX7 is hermetic sealed by seam welding,
KX5 is hermetic sealed by seam welding or by glas-frit welding (non-magnetic)

Assembly, taping
Crystals in ceramic SMD packages can by deliver in tapes wound on reels, suitable for automatic assembly.

Typical specifications

 Type Ceramic SMD package
 Case KX7 KX5 KX7, KX5 KX7, KX5
 Overtone 1. 1. 3. 5.
 Frequency range 8-40 MHz 10-40 MHz  25-130 MHz 75-160 MHz
 Freq. adjustment tolerance at 25 °C ±10, ±15, ±20, ±50, ±100 x 10-6
 Frequency stability see table 1
 Equivalent series resistance see table 2
 Aging ±1, ±2, ±3 ppm/year
 Storage temperature range -40 ... +90 °C
 Load capacitance series resonance, CL=10 ... 40 pF
 Shunt capacitance 7 pF max.
 Drive level 100 µW max.

Differences from standard values and other parameters can be consulted.


Frequency stability in temperature ranges (table 1)

Temperature
range
[°C]
Frequency stability [ppm]
± 5 ± 7.5 ± 10 ± 15 ± 20 ± 30 ± 50 ± 100
1 2 3 4 5 6 7 8
-10 ... +60 A                
-20 ... +60 B                
0 ... +70 C                
-10 ... +70 D                
-20 ... +70 E                
-30 ... +60 F                
-20 ... +85 G                
-30 ... +70 H                
-30 ... +85 I                
-40 ... +85 J                
-40 ... +90 K                
-40 ... +105 L                


Equivalent series resistance (ESRmax) (table 2)

Frequency [HMz] Overtone KX7 KX5
8 ... 10 1. 70 Ω -
10 ... 15 1. 60 Ω 60 Ω
15 ... 22 1. 50 Ω 60 Ω
22 ... 30 1. 40 Ω 50 Ω
30 ... 40 1. 30 Ω 40 Ω
25 ... 30 3. 50 Ω 50 Ω
30 ... 50 3. 50 Ω 50 Ω
50 ... 80 3. 60 Ω 80 Ω
75 ... 160 5. 80 Ω 80 Ω

 

 
 
 

Ceramic SMD packages

Outline dimensions [mm]

SMD ceramic package KX7


 SMD ceramic package KX5



 
 
 

KRYSTALY 

Hradec Králové, a.s. 
Okružní 1144 
500 03 Hradec Králové 3 
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