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SAW Components
Data Sheet B3857
SAW Components Low-Loss Filter Data Sheet
B3857 919,5 MHz
Ceramic package DCC6C
Features Low-loss RF filter for TETRA phone Usable bandwidth 5 MHz No matching required for operation at 50 Ω Package for Surface Mounted Technology (SMT) q Hermetically sealed ceramic package
q q q q
Terminals
q Gold-plated
typ. Dimensions in mm, approx. weight 0,037 g
Pin configuration 2 5 1, 3, 4, 6 Input Output To be grounded
Type B3857
Ordering code B39921-B3857-U410
Marking and Package according to
C61157-A7-A67
Packing according to
F61074-V8088-Z000
Electrostatic Sensitive Device (ESD)
Maximum ratings Operable temperature range Storage temperature range DC voltage Source power (cw)
TA Tstg VDC Ps
-35 / +85 -40 / +85 0 6
˚C ˚C V dBm
source impedance 50 Ω
2
May 24, 2002
SAW Components Low-Loss Filter Data Sheet
Characteristics Operating temperature range: Terminating source impedance: Terminating load impedance:
B3857 919,5 MHz
TA = 25 ± 10 ˚C ZS = 50 Ω ZL = 50 Ω
min. Nominal frequency Maximum insertion attenuation 917,0 MHz ... 922,0 MHz Amplitude ripple (p-p) 917,0 MHz ... 922,0 MHz Group delay ripple (p-p) 917,0 MHz ... 922,0 MHz Return loss (Input and Output) 917,0 MHz ... 922,0 MHz Absolute attenuation 0,1 MHz ... 932,0 MHz ... 937,0 MHz ... 942,0 MHz ... 947,0 MHz ... 2000,0 MHz ... αabs 895,0 MHz 937,0 MHz 942,0 MHz 947,0 MHz 2000,0 MHz 4000,0 MHz 12 10 14 18 26 15
typ. 919,5
max. — MHz
fN
αmax
—
— ∆α — ∆τ —
1,7
2,8
dB
0,1
1,0
dB
10
30
ns
11,0
15,0
—
dB
40 13 23 28 29 28
— — — — — —
dB dB dB dB dB dB
Temperature coefficient of frequency
TCf
—
– 36
—
ppm/K
3
May 24, 2002
SAW Components Low-Loss Filter Data Sheet
Characteristics Operating temperature range: Terminating source impedance: Terminating load impedance:
B3857 919,5 MHz
TA = -30 ... +75 ˚C ZS = 50 Ω ZL = 50 Ω
min. Nominal frequency Maximum insertion attenuation 917,0 MHz ... 922,0 MHz Amplitude ripple (p-p) 917,0 MHz ... 922,0 MHz Group delay ripple (p-p) 917,0 MHz ... 922,0 MHz Return loss (Input and Output) 917,0 MHz ... 922,0 MHz Absolute attenuation 0,1 MHz ... 932,0 MHz ... 937,0 MHz ... 942,0 MHz ... 947,0 MHz ... 2000,0 MHz ... αabs 895,0 MHz 937,0 MHz 942,0 MHz 947,0 MHz 2000,0 MHz 4000,0 MHz 10 8 12 15 26 15
typ. 919,5
max. — MHz
fN
αmax
—
— ∆α — ∆τ —
1,9
3,4
dB
0,2
1,3
dB
15
30
ns
10,0
15,0
—
dB
35 10 21 27 29 28
— — — — — —
dB dB dB dB dB dB
Temperature coefficient of frequency
TCf
—
– 36
—
ppm/K
4
May 24, 2002
SAW Components Low-Loss Filter Data Sheet
Transfer function
B3857 919,5 MHz
Transfer function (pass band, 25 ± 10 ˚C)
5
May 24, 2002
SAW Components Low-Loss Filter Data Sheet
B3857 919,5 MHz
Published by EPCOS AG Surface Acoustic Wave Components Division, SAW MC IS P.O. Box 80 17 09, 81617 Munich, GERMANY © EPCOS AG 2002. Reproduction, publication and dissemination of this brochure and the information contained therein without EPCOS’ prio.