B39871B3570U310W3 EPCOS Inc, B39871B3570U310W3 Datasheet - Page 3

• Manufacturer Part Number: B39871B3570U310W3
• Description: FILTER SAW 868.39MHZ REMOTE SMD
• Manufacturer: EPCOS Inc

Specifications of B39871B3570U310W3

• Frequency: 868.39MHz Center
• Filter Type: Bandpass
• Insertion Loss: 2.7dB
• Applications: Remote Control
• Package / Case: 0.197" L x 0.197" W x 0.053" H (5.00mm x 5.00mm x 1.35mm)
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Bandwidth: -
• Other names: 495-1961-2; B39871B3570U310; B39871B3570U310

Data Sheet
Characteristics
Reference temperature:
Terminating source impedance:
Terminating load impedance:
Center frequency
(center frequency between 3 dB points)
Minimum insertion attenuation
Pass band (relative to
Relative attenuation (relative to
Impedance for pass band matching
Temperature coefficient of frequency
Frequency inversion point
1)
2)
source- and to load impedance (here 50 Ohm). After the SAW filter is removed and input imped-
ance into the input matching / output matching network is calculated.
The conjugate complex value of these characteristic impedances are the input and output imped-
ances for flat passband. For more details, we refer to EPCOS application note #4.
Temperature dependence of f
SAW Components
Low-loss Filter
Impedance for passband matching bases on an ideal, perfect matching of the SAW filter to
Input:
Output: Z
868,00 ... 868,78 MHz
868,00 ... 868,78 MHz
867,90 ... 868,88 MHz
700,00 ... 830,00 MHz
830,00 ... 850,00 MHz
850,00 ... 865,20 MHz
871,00 ... 874,50 MHz
874,50 ... 883,00 MHz
883,00 ... 900,00 MHz
900,00 ...1000,00 MHz
min
Z
10,00 ... 700,00 MHz
IN
OUT
)
= R
= R
C
: f
C
min
IN
OUT
( T
2)
)
A
|| C
|| C
) = f
1)
IN
OUT
C
( T
T
Z
Z
0
A
S
L
) (1 + TC
3
= 25 ˚C
= 50
= 50
f
TC
T
C
min
rel
0
May 09, 2001
f
f
( T
and matching network
and matching network
A
min.
50
35
32
25
11
22
30
35
15
– T
—
—
—
—
—
—
—
0
)
2
)
216 || 2,20
222 || 2,20
868,39
–0,03
typ.
2,7
1,0
1,5
55
45
40
30
16
27
35
40
—
max.
4,2
3,0
6,0
35
—
—
—
—
—
—
—
—
—
—
—
—
868,30 MHz
B3570
MHz
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
ppm/K
C
|| pF
|| pF
2