The reference level for the relative attenuation arel of the TFS 248C1 is the minimum of the pass band attenuation amin. The minimum of the pass band
attenuation amin is defined as the insertion loss ae. The centre frequency fc is the arithmetic mean value of the upper and lower frequencies at the 3 dB
filter attenuation level relative to the insertion loss ae. The nominal frequency fN is fixed at 248,6 MHz without any tolerance. The given values for both the
relative attenuation arel and the group delay ripple have to be achieved at the frequencies given below even if the centre frequency fc is shifted due to the
temperature coefficient of frequency TCf in the operating temperature range and due to a production tolerance for the centre frequency fc.
Data
Insertion loss
(reference level)
Nominal frequency
Centre frequency
Passband
Pass band ripple
Bandwidth
3
dB
arel
-
+
+
12
21
251,4
MHz
MHz
MHz
BW
ae
f
N
f
C
PB
typ. value
3,0
-
248,6
MHz
f
N
0,1
dB
dB
tolerance / limit
max.
3,5
248,6
-
±
120
0,5
kHz
dB
dB
MHz
max.
6,6
MHz
min.
5,0
MHz
Relative attenuation
f
N
f
N
f
N
@
@
@
@
@
-
+
+
f
N
f
N
f
N
f
N
f
N
248,5
10
21
+ 22,8
+ 52,0
+ 74,8
+ 104,0
+ 126,8
MHz ... f
N
MHz … f
N
MHz … f
N
MHz
MHz
MHz
MHz
MHz
57
19
67
56
56
56
56
56
150
20
-
dB
dB
dB
dB
dB
dB
dB
dB
ns
ns
min.
min.
min.
min.
min.
min.
min.
min.
max.
max.
max.
25
10
25
50
50
50
50
50
300
100
20
dB
dB
dB
dB
dB
dB
dB
dB
ns
ns
dBm
Group delay
Group delay ripple within PB
Input power level
Operating temperature range
Storage temperature range
Temperature coefficient of frequency
TCf **
OTR
-
-
- 36
ppm/K
- 25 °C ... + 75 °C
- 40 °C ... + 85 °C
-
*) The terminating impedances depend on parasitics and q-values of matching elements and the board used, and are to be understood as reference
values only. Should there be additional questions do not hesitate to ask for an application note or contact our design team.
**)
∆f(Hz)
= TCf(ppm/K) x (T-T
0
) x fTo(MHz).
Generated:
Checked / Approved:
Tele Filter GmbH
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: (+49) 3328 4784-0 / Fax: (+49) 3328 4784-30
E-Mail:
tft@telefilter.com
VI TELEFILTER reserves the right to make changes to the product(s) and/or information contained herein without notice. No liability is
assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information.
Filename: tfs 248c1.doc
Version 1.6
25.07.2006
VI
TELEFILTER
Filter characteristic
0
-10
-20
Filter specification
TFS 248C1
2/5
0
-0.5
-1
-1.5
0.5
0.45
0.4
0.35
magnitude in dB
magnitude in dB
-30
-40
-50
-60
-2.5
-3
-3.5
-4
0.25
0.2
0.15
0.1
0.05
244
245
246
247
248
249
250
frequency in MHz
251
252
253
0
-70
-80
100
-4.5
150
200
250
frequency in MHz
300
350
-5
Construction and pin connection
(All dimensions in mm)
TFS 248C1
●
U30
1
2
3
4
5
6
7
8
9
10
Input
Ground
Ground
Ground
Ground
Output
Output
Ground
Ground
Ground
Date code:
U
V
W
...
Year + week
2006
2007
2008
50/200
Ω
Test circuit
1
7
L2
C2
L4
6
2, 3, 4, 5, 8, 9, 10
Tele Filter GmbH
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: (+49) 3328 4784-0 / Fax: (+49) 3328 4784-30
E-Mail:
tft@telefilter.com
VI TELEFILTER reserves the right to make changes to the product(s) and/or information contained herein without notice. No liability is
assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information.
delay in µs
-2
0.3
Filename: tfs 248c1.doc
Version 1.6
25.07.2006
VI
TELEFILTER
Stability characteristics, reliability
Filter specification
TFS 248C1
3/5
After the following tests the filter shall meet the whole specification:
1. Shock:
2. Vibration:
3. Change of
temperature:
4. Resistance to
solder heat (reflow):
500g, 1 ms, half sine wave, 3 shocks each plane;
DIN IEC 68 T2 - 27
10 Hz to 500 Hz, 0,35 mm or 5 g respectively, 1 octave per min, 10 cycles per plan, 3 plans;
DIN IEC 68 T2 - 6
-55 °C to 125°C / 30 min. each / 10 cycles
DIN IEC 68 part 2 – 14 Test N
reflow possible: three times max.;
for temperature conditions refer to the attached "Air reflow temperature conditions" on page 4;
This filter is RoHS compliant (2002/95/EG, 2005/618/EG)
Packing
Tape & Reel:
IEC 286 – 3, with exception of value for N and minimum bending radius;
tape type II, embossed carrier tape with top cover tape on the upper side;
max. pieces of filters per reel:
reel of empty components at start:
reel of empty components at start including leader:
trailer:
Pull Off Direction
2000
min. 300 mm
min. 500 mm
min. 300 mm
Tape (all dimensions in mm)
W
: 16,00 ± 0,3
Po
: 4,00 ± 0,1
Do
: 1,50 +0,1/-0
E
: 1,75 ± 0,10
F
: 7,50 ± 0,10
G(min)
: 0,60
P2
: 2,00 ± 0,1
P1
: 12,00 ± 0,1
D1(min)
: 1,50 +0,1/-0
Ao
: 7,60 ± 0,10
Bo
: 9,60 ± 0,10
Ct
: 13,5
P1
Date Code
t
Do
Po
P2
E
G
Ct
Bo
F
Ko
Typ
PIN Marker
D1
Ao
W 2
Reel (all dimensions in mm)
A
: 330
W1
: 16,4
W2(max) : 22,4
N(min)
: 50
C
: 13,0
A
C
N
W 1
The minimum bending radius is 45 mm.
Tele Filter GmbH
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: (+49) 3328 4784-0 / Fax: (+49) 3328 4784-30
E-Mail:
tft@telefilter.com
VI TELEFILTER reserves the right to make changes to the product(s) and/or information contained herein without notice. No liability is
assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information.
G
W
Filename: tfs 248c1.doc
Version 1.6
25.07.2006
VI
TELEFILTER
Air reflow temperature conditions
Filter specification
TFS 248C1
4/5
Conditions
Average ramp-up rate (30°C to 217°C)
> 100°C
> 150°C
> 217°C
Peak temperature
Time within 5°C of actual peak temperature
Cool-down rate (Peak to 50°C)
Time from 30°C to Peak temperature
Exposure
less than 3°C/second
between 300 and 600 seconds
between 240 and 500 seconds
between 30 and 150 seconds
max. 260°C
between 10 and 30 seconds
less than 6°C/second
no greater than 300 seconds
Chip-mount air reflow profile
Temperature / °C
max. 260°C
217°C
max. 300 s
10 ... 30 s
30 ... 150 s
Time / s
Tele Filter GmbH
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: (+49) 3328 4784-0 / Fax: (+49) 3328 4784-30
E-Mail:
tft@telefilter.com
VI TELEFILTER reserves the right to make changes to the product(s) and/or information contained herein without notice. No liability is
assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information.
Filename: tfs 248c1.doc
Version 1.6
25.07.2006
VI
TELEFILTER
History
Version
Reason of Changes
Filter specification
TFS 248C1
5/5
Name
Date
1.0
1.1
1.2
- generate according to customer specification
- correct of pin connections
- add of input power level
- change of development specification to Filter specification
- add of typical filter data and terminating impedance
- add filter characteristic
- change drawing of package (construction, pin connection)
- change drawing of test circuit
- change drawing of packing (tape and reel)
-change marking of package
- add source and load impedance
- change air reflow profile
- change stability characteristics and packing
Dr. Sabah
Dr. Sabah
25.09.01
12.11.01
Dr. Sabah
08.01.02
1.3
Noack
Noack
Noack
Strehl
04.08.04
24.08.04
13.05.05
25.07.2006
1.4
1.5
1.6
Tele Filter GmbH
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: (+49) 3328 4784-0 / Fax: (+49) 3328 4784-30
E-Mail:
tft@telefilter.com
VI TELEFILTER reserves the right to make changes to the product(s) and/or information contained herein without notice. No liability is
assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information.
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