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B3860 Datasheet(PDF) 3 Page - EPCOS

Part No. B3860
Description  Low-Loss Filter SAW Components
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Maker  EPCOS [EPCOS]
Homepage  http://www.epcos.com
Logo EPCOS - EPCOS

B3860 Datasheet(HTML) 3 Page - EPCOS

  B3860 Datasheet HTML 1Page - EPCOS B3860 Datasheet HTML 2Page - EPCOS B3860 Datasheet HTML 3Page - EPCOS B3860 Datasheet HTML 4Page - EPCOS B3860 Datasheet HTML 5Page - EPCOS  
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3
Aug 02, 2002
SAW Components
B3860
445,25 MHz
Low-Loss Filter
Preliminary Data Sheet
Characteristics
Operating temperature:
T
= -25 ... +75 ˚C
Terminating source impedance:
ZS =75 Ω and matching network
Terminating load impedance:
ZL =75 Ω and matching network
Matching circuit:
Cp1 = 12pF 2)
Ls2 = 18nH 2)
Ls3 = 18nH 2)
Cp4 = 12pF 2)
1) Temperature dependance of fc: fc(TA) = fc(T0)(1 + TCf(TA – T0)2)
2) Element values depend on PCB layout
min.
typ.
max.
Nominal frequency
fN
445,25
MHz
Insertion attenuation at
fN (T=25 ˚C)
α
N
6,5
8,5
9,5
dB
Variation of insertion att. (rel. to
α
N)
α
rel
——
±0,9
dB
Frequency response
3 dB Lower frequency
fL 3dB
444,40
444,75 MHz
3 dB Upper frequency
fU 3dB
445,75
446,40
MHz
35 dB Lower frequency
fL35dB
442,25
442,90
MHz
35 dB Upper frequency
fU35dB
448,00
448,25 MHz
Amplitude ripple (peak to adjacent valley)
fN ± 100 kHz
0,3
0,5
dB
Relative attenuation
α
rel
fN - 200,0 MHz ... fN - 10,0 MHz
40
48
dB
fN - 10,0 MHz ... fN -
3,0 MHz
35
46
dB
fN +
3,0 MHz ...
fN + 10,0 MHz
35
46
dB
fN + 10,0 MHz ... fN + 200,0 MHz
40
45
dB
Temperature coefficient of frequency 1)
TCf
– 0,036
ppm/K2
Turnover temperature
T0
—25
˚C


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