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SAW Components
Data Sheet B4955
SAW Components Low-Loss Filter for Mobile Communication Data Sheet
B4955 183,6 MHz
SMD ceramic package QCC12C Features
s s s s s s s
2,54
111 000 111 000 111 000 111 000
12 11
IF filter for mobile telephone Channel selection in CDMA systems Balanced or unbalanced High rejection, very small size Low amplitude ripple Package for Surface Mounted Technology (SMT) Filter surface passivated
2,54 1,0
1 2 3 111 11 000 00 111 000 111 11 000 00 111 000 111 11111 000 00000 111 000 111 11111 000 00000 111 000 111 000 111 000 111 000 111 000
1,4
4
bottom view
111 000 111 000 111 000 111 111 000 000 111 000 111 000 111 000 111 000 111 000 111 000 111 000 9 8
10
111 000 111 000 111 000 11111 00000 11 00 11 00 11 00 7
0,6
111 000 111 000 111 000 111 000 111 000 111 000 111 000 111 000 111 000 111 111 111 000 000 000 111 111 111 000 000 000
1,48
6
5
side view
Terminals
s Ni, gold plated
5,0
top view
7,0
Dimensions in mm, approx. weight 0,25 g
Pin configuration 12 10 6 4 1, 2, 3, 7, 8, 9 Input Balanced input or ground Output Balanced output or ground To be grounded
12
4
10 2,8
6
Type B4955
Ordering code B39181-B4955-H310
Marking and Package according to C61157-A7-A95
Packing according to F61074-V8170-Z000
Electrostatic Sensitive Device (ESD) Maximum ratings Operable temperature range Storage temperature range DC voltage Source power
T Tstg VDC Ps
- 40/+ 85 - 40/+ 85 0 10
C C V dBm
2
Jun 12, 2003
SAW Components Low-Loss Filter for Mobile Communication Data Sheet
Characteristics Specified temperature range: Terminating source impedance: Terminating load impedance:
B4955 183,6 MHz
T = -30C .. +85 C ZS = 300 || 44nH ZL = 675 || 54nH
min. typ. 183,6 8,1 max. -- 9,5 MHz dB
Nominal frequency Minimum insertion attenuation
(including loss in matching network without loss in balun)
fN
min
-- --
Amplitude ripple fN - 0,3 MHz
...
fN + 0,3
MHz
--
0,6
1,2
dB
Phase linearity (rms deviation) fN - 0,615MHz ... fN + 0,615 MHz Relative attenuation (relative to min) fN 0,615MHz rel
--
1,3
2,8
-- 33 33 33 33 33 33 33 33 33
4,0 39 45 44 39 37 43 42 35 37
5,5 -- -- -- -- -- -- -- -- --
dB dB dB dB dB dB dB dB dB dB
fN - 0,9 MHz fN + 0,9 MHz fN - 1,25 MHz fN + 1,25 MHz fN - 1,7 MHz fN + 1,7 MHz fN 2,05 MHz fN - 9,0 MHz fN + 1,25 MHz
... ...
fN - 1,25 MHz fN + 9,0 MHz
3
Jun 12, 2003
SAW Components Low-Loss Filter for Mobile Communication Data Sheet
Normalized transfer function (measurement):
B4955 183,6 MHz
Normalized transfer function (measurement, passband):
4
Jun 12, 2003
SAW Components Low-Loss Filter for Mobile Communication Data Sheet
Test matching network (Element values depend on pcb layout)
B4955 183,6 MHz
50
15 pF 15 pF 1:4 33 nH Q=55
10
6 39 nH Q=55
6.8 pF 6.8 pF 4:1
50
12
4
pins 2,8 GND balanced input: pins 10,12 balanced output: pins 4,6 to be grounded: 1,3,7,9
Published by EPCOS AG Surface Acoustic Wave Components Division, SAW MC WT P.O. Box 80 17 09, 81617 Munich, GERMANY (c) EPCOS AG 2003. 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.
5
Jun 12, 2003

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