Krystaly, Hradec Králové, a.s.
 
Crystals in HC-49/U and HC-50/U cases image

Crystals in HC-49/U and HC-50/U cases

General application
Microcomputers, audio/video-applications, wireless phones, communication devices

 

Features
Cases HC 49-50 series are highly reliable,
hermetically sealed by seam welding.

Assembly, taping
Cases HC 49-50 series are designed for through hole mount, but it can by designed for SMD too.
Crystals in SMD modification can by delivered in tapes wound on reels, suitable for automatic assembly.

Typical specifications
Type HC-49/U, HC-50/U
 Overtone 1. 3. 5. 7. 9.
 Frequency range 1.6-40MHz 16-120MHz 30-190MHz 90-190MHz 120-190MHz
 Freq. adjustment tolerance at 25 °C ±5, ±7, ±10, ±15, ±20, ±50 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= 5 ... 50 pF
 Drive level 10 - 1000 µW
Differences from standard values and other parameters can be consulted.


Frequency stability in temperature ranges (table 1)
Temperature
range [°C]
Frequency stability [ppm]
± 2 ± 3 ± 4 ± 5 ± 7 ± 10 ± 15 ± 20 ± 25 ± 30 ± 40 ± 50
+15 ... +35                        
+10 ... +40                        
+5 ... +45                        
0 ... +50                        
-5 ... +55                        
-10 ... +60                        
-15 ... +65                        
-20 ... +70                        
-25 ... +75                        
-30 ... +80                        
-40 ... +90                        
-55 ... +105                        


Equivalent series resistance (ESRmax) (table 2)
for first overtone
Overtone Frequency [MHz]
1.6 2.0 2.4 3.0 4.5 6 8 15 22
1.   500 Ω 300 Ω 250 Ω 120 Ω 80 Ω 30 Ω 20 Ω 15 Ω  

for higher overtones
Overtone Frequency [MHz]
16 30 90 120 160 190
3.   40 Ω 35 Ω          
5.       50 Ω 65 Ω  
7.           100 Ω 120 Ω  
9.               130 Ω  


 
 
 

HC-49/U and HC-50/U cases

Outline dimensions [mm]

    through hole modification
  H W D Note
HC 49/U 13.4 13.7 0.48  
HC 49/11 11.2 13.7 0.48  
HC 49/10 10.5 13.7 0.48 from 4.5MHz
HC 49/x-3       3 wires*
HC 49/x-3S       3 - point mounting for higher resistivity to shock and vibrations
         
HC 50/U 13.4 6.2 1.06  
HC 50/11 11.2 6.2 1.06  
* central wire is connected to the case
   SMD modification
  LK LC   Note
HC 49/SMD 13.4 17.9   with clip**
  11.2 16.2   with clip**
  10.5 15.6   with clip**
** clip means solderable metal cable sleeve
 
 
 

KRYSTALY 

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