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How To Specify Crystal Filters

RF Filter Packages (Case Codes)
Our Most Popular Filter Packages  

Cases A-1, -2, -3, -4, -5

Case L H W A B Type
A-1 0.432 0.450 0.185 0.192 0.018 HC-49/3
A-2 0.300 0.300 0.100 0.114 0.018 HC-49T/3
A-3 0.432 0.530 0.185 0.192 0.018 HC-49N/3
A-4 0.750 0.760 0.345 0.486 0.030 HC-51/3
A-5 0.560 0.635 0.230 0.275 0.030 HC-32/3

Cases B and C  

Case L W A
B 0.590 0.470 0.354
C 0.745 0.496 0.528
       Pin Dia. 0.018 (4 pins)

1) The listed Filter package heights are standard. The height can vary
       from 1/10" to 0.400" depending on the filter frequency.
 (2) 4-40 x .22 studs may be substituted for ground pins on case D thru
       case I. 0.050" to 0.020" terminal are available for special applications.
Case L W H(1) A B C D E(2)
D 3.20 1.20 .091 0.20 0.20 0.80 2.80 .040
E 2.98 1.00 0.91 0.22 0.22 0.56 2.54 .040
F 2.80 1.00 0.71 0.22 0.22 0.56 2.36 .040
G 2.38 1.00 0.75 0.22 0.22 0.56 1.94 .040
H 2.18 1.00 0.75 0.22 0.22 0.56 1.74 .040
I 2.18 0.75 0.75 0.20 0.20 0.38 1.80 .040
J 1.75 0.63 0.54 0.13 0.13 0.40 1.49 .030
K 1.61 1.01 0.54 0.13 0.13 0.75 1.35 .030
L 1.50 0.75 0.54 0.13 0.13 0.49 1.24 0.30
M 1.20 0.61 0.45 0.13 0.13 0.35 0.94 .030
N 1.00 0.50 0.50 0.13 0.13 0.25 0.74 .030

Connector Selection Guide Connector Length in Inches (3)
Connector Style Connector Code Cases

A-1 thru C

Cases

D thru I

Cases 

J thru N

BNC Jack BJ   .072  
BNC Plug BP   0.88  
TNC Jack TJ   0.75  
TNC Plug TP   0.85  
SMA Jack SJ   0.38 0.38
SMA Plug SP   0.5 0.5
PC Mounting PC See above 0.38 0.38
Sealectro J OJ   0.38 0.38
Special XX Contact factory

(3) Length shown is measurement of connector projection beyond the package length or height. Lengths are not shown for Case/Connector combinations which are not recommended.

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