THERMAL VARIABLE ATTENUATORS
E-TA
■
APPLICATIONS
●
Temperature compensation of microwave high power
amplifier.
■
FEATURES
●
Flat VSWR characteristic to the temperature change.
●
Linear attenuation characteristic to temperature fluctuation.
●
RoHS compliant.
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SPECIFICATIONS
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Electrical characteristics
E-TA3216
Attenuation
Tolerance
Impedance
VSWR
DC ~ 2 GHz : Less than 1.3
2 ~ 3 GHz : Less than 1.7
(at 25 °C)
N5∼N8 at 1 GHz：
Please refer to the chart of “Example of Attenuation vs. Temperature”
E-TA2012
1, 2, 3, 4, 5, 6, 7, 8, 9, 10 dB
at 25 °C
± 0.5 dB
(at 25 °C, 50
Ω
load)
50
Ω
Less than 1.3
(at 25 °C)
1, 2, 3, 4, 5 dB
at 25 °C
DC ~ 3 GHz : +0.5 dB, DC ~ 1 GHz : -0.5 dB
1 ~ 3 GHz : -1.0dB (at 25 °C, 50
Ω
load)
Temperature Coefficient
N1∼N8 at 1 GHz：
Please refer to the chart of “Example of Attenuation vs. Temperature”
N1 is manufactured upon receipt of order basis
Frequency Range
Power Rating
Operating Temperature Range
100 mW
DC ~ 3 GHz
63 mW
– 40 °C ~ +100 °C
●
Temperature Characteristics
TCA : Temperature Coefficient of Attenuation N1 ~ N8 (dB/dB/°C)
N1 ; – 0.0119
N2 ; – 0.0088
N3 ; – 0.0062
N4 ; – 0.0047
N5 ; – 0.0041
N6 ; – 0.0035
N7 ; – 0.0026
N8 ; – 0.0019
Note. Temperature coefficient of E-TA3216 is N5 ~ N8 and E-TA2012 is N1 ~ N8.
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PART NUMBER DESIGNATION
E-TA2012 T 1 dB N8
Series name and size
C-TA3225, E-TA3216, E-TA2012
Temperature Coefficient of Attenuation
(N1, N2, N3, N4, N5, N6, N7, N8)
Form of packaging
T : Taping (1000 pcs/reel)
Blank : Bulk (100 pcs/in plastic bags)
Attenuation [dB]
(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specifications are subject to change without notice.
THERMAL VARIABLE ATTENUATORS
E-TA
■
OUTLINE DIMENSIONS
●
E-TA3216
0.2
Unless otherwise specified, tolerance :
±
0.2 (Unit : mm)
●
E-TA2012
Unless otherwise specified, tolerance :
±
0.2 (Unit : mm)
3.2
1.0
0.15
0.8
1.0
0.2
0.45
2.0
0.7
0.45
Side view
Date code
①, ②
In/ Out terminal
①
Top view
0.3
②
Marker
Date code
①, ②
In/ Out terminal
0.15
0.15
①
②
Marker
③
④
Unit marked on
this surface
0.25
1.6
Top view
③
④
Unit marked on
this surface
③, ④
Ground terminal
③, ④
Ground terminal
＜
Marking
＞
●
Date code (2 digits)
9 A
Year
（
One last digit)
Month(A~H,J,Y,L,M)
●
Model code (3 digits)
1 N1
Attenuation(1~10dB)
Temperature Coefficient of attenuation(N1~N8)
■
Specifications are subject to change without notice.
1.25
0.9
Side view
1.0 max
THERMAL VARIABLE ATTENUATORS
E-TA
■
RECOMMENDED PAD OUTLINE DIMENSIONS
Unless otherwise specified, tolerance :
±
0.3 (Unit : mm)
●
E-TA3216
3.0
1.2
0.55
0.6
1.2
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E-TA2012
2.3
0.8
0.7
0.7
0.8
0.95
0.5
0.55
2.0
0.7
Note) The zero point is center of mounting
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EXAMPLE OF ATTENUATION VS. TEMPERATURE : 3 dB
●E-TA2012
5.5
N1
3dB N*
3 dB Attenuation vs. Temperature
5.0
N2
4.5
N3
4.0
N4
3.5
3.0
2.5
2.0
1.5
-40
-30
-20
-10
0
10
20
30
40
50
60
70
80
90
100
1.9
0
0
N5
N6
N7
N8
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Specifications are subject to change without notice.
THERMAL VARIABLE ATTENUATORS
E-TA
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ENVIRONMENTAL CHARACTERISTICS
Test item
A short time overload voltage
Load life
Test conditions
Apply the rated voltage of 2.5 times for 5 sec.
70 ± 3 °C, Apply rated voltage for 90 minutes followed by 30 minutes
Intermission. This cycle is repeated for 1000 hours.
60 ± 2 °C, 90 ~ 95 %RH, Apply rated voltage for 90 minutes followed by
30 minutes Intermission. This cycle is repeated for 1000 hours.
– 40 °C ~ 100 °C (0.5 h), 5 cycles
（Vibration）10∼55 Hz、
（Amplitude）1.5 mm、
10-55-10 Hz/minutes、xyz 2h each
Specifications
Attenuation ± 0.1 dB
Attenuation ± 0.2 dB
Humidity life
Attenuation ± 0.2 dB
Thermal shock
Vibration
Attenuation ± 0.1 dB
Attenuation ± 0.1 dB
• C-TA3225
Attenuation ± 0.1 dB (1 ~ 4 dB)
Attenuation ± 0.2 dB (5 ~ 10 dB)
• E-TA3216,E-TA2012
Attenuation ± 0.1 dB
95 % or more of the immersed area
should be adequately wetted.
Soldering heat
Peak temperature 255 °C, two times maximum
Solderability
245 ± 5 °C (lead free), 3 ± 0.5 s
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REFLOW PROFILE FOR SOLDERING HEAT EVALUATION
(°C)
250
Temperature
200
150
100
50
180
°C
150
°C
Peak : 250
+5
0
°C
Over 230
°C
Pre Heating Zone
90
±
30 s
30
±
10 s
Heating time
Soldering Zone
Reflow : two times maximum
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PACKAGING SPECIFICATIONS
●
Taping packaging specifications
• Taping will be accepted for units of 1000 pcs. per reel.
Orders will be accepted for units of 1000 pcs. i.e., 1000,
2000, pcs., etc.
• Taping version is boxed with one reel (1000 pcs.).
Maximum number of consecutive missing pieces = 2
●
Bulk pack specifications
• Unit of bulk in a plastic bag package is 100 pcs. per pack.
• Boxing of bulk in a plastic bag is performed with 200 pcs.
per box.
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Specifications are subject to change without notice.
THERMAL VARIABLE ATTENUATORS
E-TA
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CAUTION
(1) Construction
The structure of E-TA3216 and E-TA2012 are designed to
withstand flux and cleaning solvents used in the soldering
and cleaning process. This sealed structure is also
effective for dust and moisture as well, but its capability is
not limitless due to inside moving parts.
For the both products, the following conditions are not
recommended.
①
Environmental air with sulphide gas, corrosive gas or
reducing gas
②
Rapid cooling of solvents
③
Long time damping into solvents (especially at high
temperature)
④
Environmental air with high humidity
(2) Notes for storage
Careful attention must be paid when the components are
stored.
Environmental temperature, humidity, etc. might affect the
solder ability of the terminals and the function of the
package. Listed below are notes to be observed.
①
Under extremely high temperature and humid condi-
tions, the quality decay of the package materials will be
accelerated.
②
It is recommended to store the components in the room at
the temperature below 25 °C and the relative humidity
below 75 %.
③
The environmental air must be free from corrosive gas
such as sulphide gas.
④
Exposure to the direct sunlight and dust must be avoided.
⑤
Handle carefully to avoid deformation of terminals.
⑥
Please use the products within one year from the delivery.
⑦
Please do not open the smallest unit of package before
use.
Note1. Specifications are subject to change without notice.
Specifications in this catalog are reference.
Note2. Not for shipment to or sale in the United States.
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Specifications are subject to change without notice.
