EPCOS B39121-B3850-H510

SAW Components
Data Sheet B3850
SAW Components
B3850
Low-Loss Filter
125,00 MHz
Data Sheet
Ceramic package DCC12A
Features
Low-loss IF filter for GSM EDGE base station
Usable bandwidth 400 kHz
Very low group delay ripple
Temperature stable
Ceramic SMD package
1
2
3
4
5
2,3
1,7
■
■
■
■
■
7,62
1,0
bottom view
10
9
8
7
6
3,81
1,6
Terminals
side view
top view
6,5
■ Gold plated
13,3
Dimensions in mm, approx. weight 0,4 g
Pin configuration
10
1
5
6
3, 8
2, 4, 7, 9
Input
Input ground
Output
Output ground
Ground
Case ground
Type
Ordering code
B3850
B39121-B3850-H510
Marking and Package
according to
C61157-A7-A94
Electrostatic Sensitive Device (ESD)
Maximum ratings
Operable temperature range
Storage temperature range
DC voltage
Source power
T
Tstg
VDC
Ps
–40 / +85
–40 / +85
1,2
10
2
˚C
˚C
V
dBm
Jul 15, 2002
Packing
according to
F61074-V8131-Z000
SAW Components
B3850
Low-Loss Filter
125,00 MHz
Data Sheet
Characteristics
Operating temperature range:
Terminating source impedance:
Terminating load impedance:
T = -10 .. 85 ˚C
ZS = 50 Ω and matching network
ZL = 50 Ω and matching network
min.
typ.
max.
Nominal frequency
fN
—
125,0
—
Minimum insertion attenuation
αmin
—
6,2
B1dB
B3dB
400
—
7,0
MHz
dB
Pass bandwidth
αrel ≤ 1,0 dB
αrel ≤ 3,0 dB
Amplitude ripple (peak to adjacent valley)
fN ± 200 kHz
560
840
—
—
kHz
kHz
—
dB
—
0,1
—
0,6
1,0
dB
1,1
1,7
µs
∆α
Amplitude variation (p-p)
fN ± 200 kHz
τ
Absolute group delay
@ fN
0,7
∆τ
Group delay ripple (p-p)
fN ± 200 kHz
Relative attenuation (relative to αmin)
fN ± 0,4 MHz ...
fN ± 0,6 MHz
fN ± 0,6 MHz ...
fN ± 1,2 MHz
fN ± 1,2 MHz ...
fN ± 1,8 MHz
fN ± 1,8 MHz ...
fN ± 3,4 MHz
fN ± 3,4 MHz ...
fN ± 6,5 MHz
fN ± 6,5 MHz ...
fN ± 9,5 MHz
fN ± 9,5 MHz ...
fN ± 17,0 MHz
10,0 MHz ...
fN − 17,0 MHz
fN + 17,0 MHz ...
450,0 MHz1)
—
70
120
ns
0
8
20
25
34
40
43
55
55
2
10
30
40
50
50
60
60
60
—
—
—
—
—
—
—
—
—
dB
dB
dB
dB
dB
dB
dB
dB
dB
αrel
VSWR (Input and output in pass band)
—
3
Jul 15, 2002
2,0
2,3
SAW Components
B3850
Low-Loss Filter
125,00 MHz
Data Sheet
min.
Temperature coefficient of frequency
Turnover temperature
2)
typ.
max.
TCf
—
– 0,036
—
ppm/K2
T0
—
50
—
˚C
1)
Narrowband responses (typ. 40 dB) at 202 MHz, 228 MHz, 250 MHz, and at 375 MHz
2)
Temperature dependance of fc:
fc(TA) = fc(T0)(1 + TCf(TA – T0)2)
Matching network to 50 Ω
(Element values depend upon PCB layout)
Lp1 = 33 nH
Ls3 = 56 nH
Ls2 = 68 nH
Lp4 = 27 nH
4
Jul 15, 2002
SAW Components
B3850
Low-Loss Filter
125,00 MHz
Data Sheet
Normalized frequency response
Normalized frequency response (pass band)
5
Jul 15, 2002
SAW Components
B3850
Low-Loss Filter
125,00 MHz
Data Sheet
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’ prior express consent is prohibited.
Purchase orders are subject to the General Conditions for the Supply of Products and Services of
the Electrical and Electronics Industry recommended by the ZVEI (German Electrical and Electronic
Manufacturers’ Association), unless otherwise agreed.
This brochure replaces the previous edition.
For questions on technology, prices and delivery please contact the Sales Offices of EPCOS AG or
the international Representatives.
Due to technical requirements components may contain dangerous substances. For information on
the type in question please also contact one of our Sales Offices.
6
Jul 15, 2002