CHIP ATTENUATORS
KAMAYA OHM
RAC101A, RAC161A, 162A
•
Features
1. The RAC101A and RAC161A, 162A series are small-size chip
attenuators, suitable for high-density surface mounting.
2. Suitable for use at DC and up to UHF band frequencies.
3. Similar foot print for chip resistor networks.
4. Standard impedance of 50 ohm and 75 ohm are available Up to 600
ohm available upon request.
5. Replaces conventional attenuation circuits with one chip in place of
three discrete resistors.
•
Dimensions and Circuits
RAC101A
RAC161A, 162A
RAC101A :
a
a
1
2
1
2
W
b
Q
Q
Dot mark on Termination 1
Attenuation factor on Termination 2 to 3
RAC161A, 162A : Impedance on Termination 1
Attenuation factor on Termination 3
Dot mark on Termination 4
b
W
Circuits
1
2
4
3
H
4
3
H
P
L
P
L
Style
RAC101A
RAC161A
RAC162A
Terminal Style
C
A
L
1.0±0.05
1.6±0.1
W
1.0±0.05
1.6±0.1
4
3
Unbalanced
Q
0.33±0.10
0.5
±0.1
a
0.15±0.10
0.25±0.10
b
0.25
+0.05
−0.10
0.25
+0.15
−0.10
*P
0.65
0.8
Type
Unit : mm
H
0.35±0.05
0.55
+0.05
−0.10
*Unit weight/pc.
1.1mg
3.5mg
*Values for reference
•
Parts Number Description
Example
Style
RAC
10
1
A
1
C
TH
Product Type
Characteristic Impedance
1
50 ohm
2
75 ohm
Size
10 W:1.0mm
16 W:1.6mm
Circuits
A Unbalanced
πType
Attenuation Factor
X
0.5dB
1
1dB
2
2dB
3
3dB
4
4dB
5
5dB
6
6dB
7
7dB
8
8dB
9
9dB
A
10dB
B
11dB
C
12dB
D
13dB
E
14dB
F
15dB
G
16dB
L
20dB
*Packaging
B Bulk (Loose Package) All Styles
TH Paper Tape (2 mm pitch) RAC101A
RAC161A
TP Paper Tape
RAC162A
*Refer to Tape and Packaging information on
pages 34 and 35.
Terminal Style
A
C
RAC161A
Convex Without corner
RAC162A
Type
With corner
RAC101A
30
KAMAYA OHM
CHIP ATTENUATORS
RAC101A, RAC161A, 162A
•
Ratings
Style
Characteristic
Impedance
Attenuation Factor
dB
0.5
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
20
1
2
3
6
10
1
2
3
6
10
Tolerance on Attenuation
Factor
dB
±0.1
Frequency
Range
DC
≤
f
≤
3GHz
Voltage Standing
Wave Ratio
1.1max.
Rated Input Power
mW/package
Category Temperature
Range
°C
±0.3
RAC101A
50 ohm
±0.4
±0.75
DC
≤
f
≤
1.5GHz
1.5GHz
<
f
≤
3GHz
1.2max.
1.3max.
−40∼+125
100
±0.8
RAC161A
50 ohm
±2.5
±0.3
±0.3
±0.5
±0.75
±0.3
±0.3
±0.5
±0.75
DC
≤
f
≤
3GHz
1.3max.
DC
≤
f
≤
3GHz
1.2max.
RAC162A
75 ohm
Note. The following information is available.
1. 0dB attenuation.
2. Test methods for Attenuation Factor and VSWR characteristics.
•
Performance Characteristics
Description
0.5∼2dB
Characteristic
impedance
50 ohm, 75 ohm
JIS C 5201-1 : 1998
Requirements
3dB∼5dB
6dB∼20dB
Measuring
Circuits
1
Test Methods
2
R
1
R
2
4
R
2
3
R
L
R
L
=50 ohm
75 ohm
Insulation resistance
Solderability
Resistance to soldering
heat
Rapid change of
temperature
At least 100M ohm
In accordance with Clause 4.17.4.5
Within
±0.1dB
Within
±0.2dB
Within
±0.3dB
50Vd.c., 60s
Clause 4.17 Dip into 235°C Solder bath for 2s.
Clause 4.18 Dip into 260°C Solder bath for 5s.
No major visible damage.
Within
±0.1dB
Within
±0.2dB
Within
±0.3dB
Clause 4.19 5 cycles between
−55°C
and
+125°C.
No major visible damage.
Within
±0.1dB
Within
±0.1dB
Within
±0.2dB
Within
±0.2dB
Within
±0.3dB
Within
±0.3dB
Clause 4.25.1 Rated input power, 1.5h"ON", 0.5h"OFF", 85°C, 1,000h.
Endurance at 85˚C
Bend strength of the
face plating
Clause 4.33 Amount of bend : 3 mm
31
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