SAW Components
Low-Loss Filter for Mobile Communication
Data Sheet
B7851
1960,0 MHz
Chip sized SAW package QCS5E
Features
q
Low-loss RF filter for mobile telephone
q
q
q
q
q
q
q
q
0.735
0,075
2
3
PCS systems, receive path
Low amplitude ripple
Very low insertion loss
Usable passband 60 MHz
Unbalanced to balanced operation
Impedance transform from 50
Ω
to 150
Ω
Suitable for GPRS class 1 to 12
Package for
Surface Mount Technology
(SMT)
Pb-free
0,38
0,075
0,44
5
4
bottom view
1
0,68
2,0
side view
Terminals
q
Ni, gold-plated
1,4
top view
Dimensions in mm, approx. weight 0,007 g
Pin configuration
1
3,4
2,5
Input, unbalanced
Output, balanced
Case ground
Type
B7851
Ordering code
B39202-B7851-K410
Marking and Package
according to
C61157-A7-A131
Packing
according to
F61074-V8151-Z000
Electrostatic Sensitive Device
(ESD)
Maximum ratings
Operable temperature range
Storage temperature range
ESD voltage
DC voltage
Input Power at
GSM850, GSM900
GSM1800, GSM1900
Tx bands
T
T
stg
V
MM
V
DC
P
IN
P
IN
– 40 / + 85
– 40 / + 85
50
5
15
12
˚C
˚C
V
V
dBm
dBm
machine model, 10 pulses
peak power of GSM signal,
duty cycle 4:8
* - acc. to JESD22-A115A (Machine Model), 10 negative & 10 positive pulses
2
Jan 12, 2005
SAW Components
Low-Loss Filter for Mobile Communication
Data Sheet
Characteristics
Operating Temperature Range:
Terminating source impedance:
Terminating load impedance:
B7851
1960,0 MHz
T
= 25˚C
Z
S
= 50Ω
Z
L
= 150Ω || 16nH (balanced)
min.
typ.
1960,0
max.
—
MHz
Center frequency
Maximum insertion attenuation
1930,0 ... 1990,0
Amplitude ripple
(p-p)
1930,0 ... 1990,0
Input VSWR
1930,0 ...1990,0
Output VSWR
1930,0 ...1990,0
MHz
MHz
f
C
α
max
MHz
∆α
MHz
—
—
1,4
2,1
dB
—
0,5
1,0
dB
—
1,7
2,0
—
1,6
2,0
Output phase balance
(φ(S
31
)−φ(S
21
)+180˚)
1930,0 ... 1990,0 MHz
Output amplitude balance
(|S
31
/S
21
|)
1930,0 ... 1990,0
Attenuation
0,0
1510,0
1830,0
1850,0
1890,0
2010,0
2070,0
2400,0
2500,0
3860,0
3980,0
5790,0
... 1510,0
... 1830,0
... 1850,0
... 1890,0
... 1910,0
... 2070,0
... 2400,0
... 2500,0
... 3860,0
... 3980,0
... 5790,0
... 6000,0
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
-10
-2/3
10
degree
MHz
α
-1,0
-0,5/0,5
1,0
dB
40
30
26
23
13
13
23
35
28
45
28
40
43
35
30
28
18
15
26
48
35
54
48
58
—
—
—
—
—
—
—
—
—
—
—
—
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
3
Jan 12, 2005
SAW Components
Low-Loss Filter for Mobile Communication
Data Sheet
Characteristics
Operating Temperature Range:
Terminating source impedance:
Terminating load impedance:
B7851
1960,0 MHz
T
= -20 to +75˚C
Z
S
= 50Ω
Z
L
= 150Ω || 16nH (balanced)
min.
typ.
1960,0
max.
—
MHz
Center frequency
Maximum insertion attenuation
1930,0 ... 1990,0
Amplitude ripple
(p-p)
1930,0 ... 1990,0
Input VSWR
1930,0 ...1990,0
Output VSWR
1930,0 ...1990,0
MHz
MHz
f
C
α
max
MHz
∆α
MHz
—
—
1,6
2,3
dB
—
0,6
1,3
dB
—
1,7
2,0
—
1,6
2,0
Output phase balance
(φ(S
31
)−φ(S
21
)+180˚)
1930,0 ... 1990,0 MHz
Output amplitude balance
(|S
31
/S
21
|)
1930,0 ... 1990,0
Attenuation
0,0
1510,0
1830,0
1850,0
1890,0
2010,0
2070,0
2400,0
2500,0
3860,0
3980,0
5790,0
... 1510,0
... 1830,0
... 1850,0
... 1890,0
... 1910,0
... 2070,0
... 2400,0
... 2500,0
... 3860,0
... 3980,0
... 5790,0
... 6000,0
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
-10
-3/5
10
degree
MHz
α
-1,0
-0,6/0,5
1,0
dB
40
30
26
23
12
13
22
35
28
45
28
40
43
35
30
28
18
15
25
48
35
54
48
58
—
—
—
—
—
—
—
—
—
—
—
—
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
4
Jan 12, 2005
MicroPython开源版块
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
