B3839 View Datasheet(PDF) - EPCOS AG
Part Name
Description
Manufacturer
B3839 Datasheet PDF : 7 Pages
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SAW Components
Low-Loss Filter
Data Sheet
Characteristics
Operating temperature range:
Terminating source impedance:
Terminating load impedance:
B3839
333,0 MHz
TA = -40 ... 85 ˚C
ZS = 50 Ω and external matching network
ZL = 50 Ω and external matching network
Center frequency
fc
αrel = 3,0 dB
min.
typ.
max.
332,88 333,0 333,12 MHz
Minimum insertion attenuation
αmin
—
6,5
8 dB
Passband width
αrel ≤ 3,0 dB B3,0dB 900
αrel ≤ 20,0 dB B20dB
—
αrel ≤ 30,0 dB B30dB
—
αrel ≤ 40,0 dB B40dB
—
αrel ≤ 50,0 dB B50dB
—
1010
1840
2080
2250
4500
1045 kHz
2000 kHz
2250 kHz
2500 kHz
— kHz
Relative attenuation (relative to αmin)
αrel
fc − 50,0 MHz ... fc − 3,0 MHz
48
50
— dB
fc + 3,0 MHz ... fc + 20,0 MHz
47
50
— dB
fc + 20,0 MHz ... fc + 40,0 MHz
44
48
— dB
fc + 40,0 MHz ... fc + 50,0 MHz
48
50
— dB
Amplitude ripple (p-p)
∆α
fc ± 0,4 MHz
—
0,5
1,0 dB
Absolute group delay (at fc)
τ
—
0,9
— µs
Group delay ripple (p-p)
∆τ
fc ± 0,4 MHz
—
430
500 ns
Reflected Wave Signal Suppression
12 µs ... 20 µs after main pulse
70
80
— dB
Temperature coefficient of frequency 1)
Turnover temperature
TCf
—
T0
—
–0,036 — ppm/K2
15
— ˚C
1) Temperature dependance of fc: fc(TA) = fc(T0)(1 + TCf(TA – T0)2)
3 Jan 08, 2002
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