Krystaly, Hradec Králové, a.s.
 
Crystals in UM-4 and UM-5 cases image

Crystals in UM-4 and UM-5 cases

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

Features
Cases UM-4 and -5 series are highly reliable,
hermetically sealed by seam welding.
Crystals can be supplied in slim cases, see outline dimensions below.

Assembly, taping
Cases UM-4 and UM-5 series are designed for through hole mount, but can be designed for SMD too. Crystals in SMD modification can by delivered in tapes wound on reels, suitable for automatic assembly.

Typical specifications 

Type UM-4, UM-5
 Overtone 1. 3. 5.
 Frequency range 11-45MHz 25-100MHz 75-180MHz
 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)

Overtone Frequency [MHz]
11 25 32 45 75 100 120 160 180
1.   20 Ω 15 Ω                      
3.       60 Ω 40 Ω              
5.                   60 Ω 80 Ω 100 Ω  



 
 
 

UM-4 and UM-5 cases

Outline dimensions [mm]

   through hole modification
  H T Bmax D Note
UM 5 6.0 2.3 3.0 0.35 from 11 MHz          
UM 4 4.6 2.3 3.0 0.35 from 12 MHz
UM 5-SLIM 6.0 1.65 2.3 0.35 from 11 MHz
UM 5-3 6.0 2.3 3.0 0.35 3 pins, central pin is connected to the case
   SMD modification
  H LC Bmax D Note
UM5-SMD* 6.0 10.0   0.35 with clip**
UM4-SMD 4.6 8.6   0.35 with clip**
* available in 3-pin version
** clip means solderable metal cable sleeve



 
 
 

KRYSTALY 

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