B39301-B3553-U310 EPCOS Inc, B39301-B3553-U310 Datasheet - Page 3

• Manufacturer Part Number: B39301-B3553-U310
• Manufacturer: EPCOS Inc

Specifications of B39301-B3553-U310

• Saw Filter Type: Low-Loss Filter
• Center Frequency: 303.8MHz
• Insertion Loss: 4.5dB
• Pass Band Ripple (db): 6dB
• Termination Impedance: 50Ohm
• Package Type: QCC8C
• Case Height: 1.35mm
• Case Length: 5mm
• Case Depth: 5mm
• Mounting: Surface Mount
• Pin Count: 8
• Operating Temp Range: -45C to 120C
• Lead Free Status / RoHS Status: Compliant

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
303,62 ... 303,98 MHz
303,62 ... 303,98 MHz
303,595 ... 304,005MHz
303,53 ... 304,07 MHz
260,00 ... 297,00 MHz
297,00 ... 302,80 MHz
304,80 ... 320,00 MHz
320,00 ... 400,00 MHz
400,00 ...1000,00 MHz
min
Z
10,00 ... 260,00 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.
– T
45
40
15
10
35
45
10
—
—
—
—
—
—
—
—
0
)
2
)
570 || 3,7
570 || 4,5
303,80
–0,03
typ.
3,0
1,0
1,0
1,5
50
45
20
15
40
50
—
max.
4,5
2,0
3,0
6,0
30
—
—
—
—
—
—
—
—
—
—
303,80 MHz
B3553
MHz
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
ppm/K
C
|| pF
|| pF
2