Chip Attenuators
ATC1A Series
Features
• Compared with three past in the chip resistor
use, reduction in mounting costs and
process, save PCB space
How to Order
ATC 1A 2 C H
q
w e rt
qSeries
wSize(1A
: 1.0×1.0mm)
eAttenuation(1
digit numbering)
1: 1dB, 2: 2dB, 3: 3dB, 4: 4dB, 5: 5dB
6: 6dB, 7: 7dB, 8: 8dB, 9: 9dB, A: 10dB
rAttenuation
tolerance
C
±0.3dB
D
±0.5dB
RoHS Conforming
tPackaging
Code
Form
H
Taping
∗
2mm pitch taping
(Unit : mm)
Material Packing unit
Paper 10000pcs/reel
Dimensions
e1
C
d
Rating
Chip attenuators
Item
Impedance
Rating
50Ω
1dB, 2dB, 3dB, 4dB, 5dB
Attenuation
6dB, 7dB, 8dB, 9dB, 10dB
±0.3dB:
1dB to 5dB
±0.5dB:
6dB to 10dB
40mW/package
DC to 2GHz
1.3 max
−55
to
+125°C
P
L
T
W
Attenuation
tolerance
1
2
Rated power
Applicable frequency
VSWR
Working temperature
unbalanced
π
circuit
4
3
Code
L
W
T
P
0.65typ
c
0.20±0.15
Dimensions
1.00±0.10
1.00±0.10 0.35±0.05
e1
0.33±0.10
Code
d
Dimensions
0.20±0.15
Precautions
Circuit design
1) Once application and assembly environments have been checked,
the resistors may be used in conformance with the catalog and the
specifications.
2) Please consult the manufacturer in advance when the resistors is
used in devices such as: devices which deal with human life, I.e.
medical devices; devices which are highy public orientated; and
devices which demand a high standerd of liability.
3) Please use the resistors in conformance with the operating
temperature provided in both the catalog and the specifications.
4) Please keep voltage under the rated voltage which is applied to the
resistor.
5) Do not use the resistor in an environment where it might easily
exceed the respective provisions concerning shock and vibration
specified in the catalog and specifications.
6) Please do not use the resistor in the following environments.
qState
that water, oil, and solvent hang in resistor
wState
where poisonous gas (sulfur and chlorine, etc.) exists
eState
that direct sunshine, radiation, and ultraviolet, etc. are irradiated
7) There is a thing that resistance changes according to the stuff of the
resin when the coating with the resin is given.
Please use resin coating after confirming the characteristic.
8) There is a thing that resistance changes according to flux and
cleaner.
Please use flux and cleaner after confirming the characteristic.
9) Please consult about a lead free products.
Soldering method
1) Recommendable temperature profile
reflow
Temp(°C)
300
230 to 250°C
250
200
150
100
50
0
(Time)
60 sec.
60 sec.
10 sec. max.
preheat
More than 180°C
40 sec. max.
2) Recommendable temperature profile
wave
Temp(°C)
300
230 to 250°C
250
200
150
100
50
0
(Time)
60 to 120 sec.
3 sec. max.
preheat
∆T
(Caution) Cooling after soldering should be as slow as possible.
Ensure that the chip Resistor is preheated adequately.
Ensure that the temperature difference(∆T) does not exceed 130˚C.
Storage
1) Keep storage place temperature
+5
to
+35˚C,
humidity 45 to 75%
RH.
2) Please keep parts out of poisonous gas such as sulfur or chlorine in
the air, and out of salty moisture. Or they may cause rust of
terminal, and poor solderability. and, please consider the above-
mentioned item after mounting your company.
3) Soldering iron
Temperature
Time
soldering iron 300±5°C *
3 sec. max.
*
3) pb-free recommendable temperature profile
reflow
Temp(°C)
300
250
preheat
200
150
100
50
0
1 to 3°C/sec.
170 to 180°C
Peak temperature
250°C±5°C
5 to 10 sec. max.
More than 220°C
90 sec. max.
(Time)
90±30 sec.
*Do not place the soldering iron on the chip. Soldering iron is 30W max.
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