SAW Components
Low-Loss Filter
Data Sheet
B4687
902,5 MHz
SMD ceramic package
QCC8B
Features
Low loss RF filter for GSM mobile phone TX
Low insertion attenuation
Usable passband 25 MHz
No matching network required for operation at
50
Ω
(input) and 200
Ω
(output)
q
Unbalanced input, balanced output
q
Ceramic Package for
Surface Mounted
Technology
(SMT)
q
q
q
q
Terminals
q
Ni, gold-plated
Dimensions in mm, approx. weight 0,07 g
Pin configuration
2
4
5
7
1,3
6
4,8
Input (50
Ω)
Input ground
Balanced output (200
Ω)
Balanced output (200
Ω)
To be grounded
N.C.
Case - ground
Filter is reciprocal
Type
B4687
Ordering code
B39901-B4687-Z810
Marking and Package
according to
C61157-A7-A46
Packing
according to
F61074-V8037-Z000
Electrostatic Sensitive Device
(ESD)
Maximum ratings
Operable temperature range
Storage temperature range
DC voltage
Source power
T
T
stg
V
DC
P
s
– 20/+ 75
– 40/+ 85
0
10
˚C
˚C
V
dBm
source impedance 50
Ω
Preliminary format of data sheet.
Terms of delivery and rights to change design reserved.
Page 1 of 4
OFW E MF
Nov 21, 1997
SAW Components
Low-Loss Filter
Data Sheet
Characteristics
Operating temperature range:
Terminating source impedance:
Terminating load impedance:
B4687
902,5 MHz
T
= 25 +-2 ˚C
Z
S
= 50
Ω
unbalanced
Z
L
= 200
Ω ||
80nH balanced
min.
typ.
902,5
max.
—
MHz
Center frequency
(center frequency between 3 dB points)
Maximum insertion attenuation
890,0 MHz ...
915,0
Reference level for the following data
Amplitude ripple in passband
(p-p)
890,0 MHz ...
915,0
Relative attenuation
(relative to
α
max
)
0,0 MHz ...
600,0
600,0 MHz ...
870,0
925,0 MHz ...
935,0
935,0 MHz ...
990,0
990,0 MHz ...
1500,0
1500,0 MHz ...
3000,0
f
c
—
α
max
MHz
—
3,0
3,5
dB
∆α
MHz
α
rel
MHz
MHz
MHz
MHz
MHz
MHz
40
25
7
20
40
20
75
35
15
27
55
39
—
—
—
—
—
—
dB
dB
dB
dB
dB
dB
—
0,8
1,0
dB
Preliminary format of data sheet.
Terms of delivery and rights to change design reserved.
Page 2 of 4
OFW E MF
Nov 21, 1997
SAW Components
Low-Loss Filter
Data Sheet
Characteristics
Operating temperature range:
Terminating source impedance:
Terminating load impedance:
B4687
902,5 MHz
T
= -20 ˚C ... 75 ˚C
Z
S
= 50
Ω
unbalanced
Z
L
= 200
Ω ||
80nH balanced
min.
typ.
902,5
max.
—
MHz
Center frequency
(center frequency between 3 dB points)
Maximum insertion attenuation
890,0 MHz ...
915,0
Reference level for the following data
Amplitude ripple in passband
(p-p)
890,0 MHz ...
915,0
Relative attenuation
(relative to
α
max
)
0,0 MHz ...
600,0
600,0 MHz ...
870,0
925,0 MHz ...
935,0
935,0 MHz ...
990,0
990,0 MHz ...
1500,0
1500,0 MHz ...
3000,0
f
c
—
α
max
MHz
—
3,5
4,0
dB
∆α
MHz
α
rel
MHz
MHz
MHz
MHz
MHz
MHz
40
25
3,5
20
40
20
74
34
10
26
54
38
—
—
—
—
—
—
dB
dB
dB
dB
dB
dB
—
1,0
1,5
dB
Preliminary format of data sheet.
Terms of delivery and rights to change design reserved.
Page 3 of 4
OFW E MF
Nov 21, 1997
SAW Components
Low-Loss Filter
Data Sheet
Transfer function
B4687
902,5 MHz
Transfer function
(wideband)
Preliminary format of data sheet.
Terms of delivery and rights to change design reserved.
Page 4 of 4
OFW E MF
Nov 21, 1997
