Microwave Ceramics Filters
Series/Type:
A740
The following products presented in this data sheet are being withdrawn.
Ordering Code
B69844N1917A740
Substitute Product
Date of Withdrawal
2012-04-27
Deadline Last
Orders
2012-07-31
Last Shipments
2012-10-31
For further information please contact your nearest EPCOS sales office, which will also support you in selecting a
suitable substitute. The addresses of our worldwide sales network are presented at www.epcos.com/sales.
Microwave Ceramics Filter
4-pole filter BS WLL
Preliminary data
Modification
P1
P2
P3
P4
B69844N1917A740
S4S3/7/3
Tape drawing
Marking
Upgraded to new form
27.04.04
14.02.06
29.05.08
10.02.10
Reichel
Reichel
Reichel
Reichel
Features
SMD filter consisting of coupled resonators with stepped impedances
MgTiO3 - CaTiO3 (εr = 21/TCf = 0 ±10 ppm/K) with a coating of copper (10
µm)
and tin (>5
µm)
Excellent reflow solderability, no migration effect due to copper/tin metallization
ESD insensitivity and ESD protecting due to filter characteristics
SAW MLIP CER PD
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 2 of 6
2010-02-10
Microwave Ceramics Filter
4-pole filter BS WLL
Preliminary data
Component drawing
B69844N1917A740
S4S3/7/3
View from below onto the solder terminals and view from beside
Recommended footprint
solder pads
connected to lines with an
impedance of 50 Ohm
FR4 material
permitivity : 4.4
ground layers below footprint
preferred thickness : 0.3
For other thickness
correlation might be necessary
I/O
Standard
condition
SAW MLIP CER PD
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 3 of 6
2010-02-10
Microwave Ceramics Filter
4-pole filter BS WLL
Preliminary data
Characteristics
min.
Center frequency
Insertion loss
Passband
Amplitude ripple (peak – peak)
Standing wave ratio
Impedance
Attenuation
at 1660 to 1690 MHz
at 1875 MHz
Maximum ratings
IEC climatic category (IEC 68-1)
Operating temperature
fc –
α
IL
B 40
∆α
SWR
Z
α
35
15
37
16
typ.
1910
2.9
B69844N1917A740
S4S3/7/3
max.
–
3.0
MHz
dB
MHz
1.5
1.6
50
2.5
2.0
dB
Ω
dBc
dBc
–40 °C/+90 °C/56
Top –40/+80
°C
Typical passband characteristic
1600
0
-10
attenuation [ dB ]
-20
-30
-40
-50
-60
frequency [MHz ]
SAW MLIP CER PD
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 4 of 6
2010-02-10
1700
1800
1900
2000
2100
2200
[ S11 ]
[ S21 ]
Microwave Ceramics Filter
4-pole filter BS WLL
Preliminary data
Processing information
Wettability acc. to IEC 68-2-58:
≥75%
(after aging)
Soldering requirements
Profile for eutectic
SnPb solder paste
Soldering type
Maximum soldering temperature
(measuring point on top surface of the component)
Recommended soldering conditions (infrared):
Temp. [°C]
250
215°C±10°C
200
150
100
50
within 10 sec.
B69844N1917A740
S4S3/7/3
Profile for leadfree
solder paste
reflow
260 (max. 2 sec.)
°C
reflow
235 (max. 2 sec.)
225 (max. 10 sec.)
250 (max. 10 sec.) °C
Temp. [°C]
250
within 10 sec.
245°C±5°C
200
150
100
50
20-40 sec.
40-80 sec.
Time [sec.]
30 sec.
2.5 °C/s
2-3 min.
Time [sec.]
> - 5 °C/s
Delivery mode
Blister tape acc. to IEC 286-3, polyester, grey
Pieces/tape: 1500
SAW MLIP CER PD
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 5 of 6
2010-02-10
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