Approval sheet
WA04, WA06
±
1%,
±
5%, Convex Type & Concave Type
General purpose chip resistors array
Size 0402x2 (4p2R)
Size 0402x4, 0603x4 (8p4R)
Size 0602x8 (16p8R)
*Contents in this sheet are subject to change without prior notice.
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ASC_WA04/06_V15
Oct.2010
Approval sheet
FEATURE
1. Small size and light weight
2. Reduced size of final equipment
3. Lower surface mounted assembly costs
4. Higher component and equipment reliability
5. RoHS compliant and lead free products.
APPLICATION
•
•
•
Consumer electrical equipment
EDP, Computer application
Telecom
DESCRIPTION
The resistors array is constructed in a high grade ceramic body (aluminum oxide). Internal metal electrodes are
added at each end and connected by a resistive paste that is applied to the top surface of the substrate. The
composition of the paste is adjusted to give the approximate resistance required and the value is trimmed to
within tolerance by laser cutting of this resistive layer.
The resistive layer is covered with a protective coat. Finally, the two external end terminations are added. For
ease of soldering the outer layer of these end terminations is Tin (lead free) alloy.
Fig 1. Consctruction of a Chip-R array (convex Type)
Fig 2. Consctruction of a Chip-R array (concave Type)
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ASC_WA04/06_V15
Oct.2010
Approval sheet
QUICK REFERENCE DATA
Item
Series No.
Size
Resistance
Tolerance
Resistance
Range
TCR (ppm/°C)
10Ω
≤
R
≤
1MΩ
R<10Ω, R>1MΩ
Max. dissipation
at T
amb
=70°C
Max. Operation
Voltage (DC or
RMS)
Max. overload
voltage
Climatic
category
WA04Y(Convex)
0402x2 (1005x2)
±5%
3Ω ~ 1MΩ,
Jumper
≤ ±
300
≤ ±
400
1/16 W
25V
50V
WA04X(Convex)
0402x4 (1005x4)
±1%
10Ω ~ 1MΩ
±5%
3Ω ~ 1MΩ
Jumper
≤ ±
200
-300~+500
1/16 W
50V
100V
55/155/56
General Specification
WA06X(Convex)
0603x4 (1608x4)
±1%
10Ω ~ 1MΩ
±5%
WA06W(Convex)
0602x8 (1605x8)
±1%
±5%
WA06T(Concave)
0603x4 (1608x4)
±1%
±5%
1Ω ~ 10MΩ 10Ω ~ 100KΩ, 10Ω ~ 100KΩ 10Ω ~ 1MΩ, 10Ω ~ 1MΩ,
Jumper,
Jumper
Jumper,
≤ ±200
-300~+500
≤ ±200
-
1/16 W
50V
100V
55/155/56
≤ ±
200
-
≤ ±
200
-
≤ ±
200
-
≤ ±
200
-
≤ ±100
-
1/10 W
50V
100V
1/10 W
50V
100V
55/155/56
Note :
1.
2.
3.
Climatic category refer to IEC 60068
This is the maximum voltage that may be continuously supplied to the resistor element, see “IEC publication
60115-8”
Max. Operation Voltage : So called RCWV (Rated Continuous Working Voltage) is determined by
RCWV
=
Rated Power
×
Resistance Value
or Max. RCWV listed above, whichever is lower.
DIMENSIONS
(unit : mm)
WA04Y
L
W
T
P
A
Ta
Tb
1.00
±
0.10
1.00
±
0.10
0.35
±
0.10
0.65
±
0.10
0.34
±
0.10
0.20
±
0.15
0.25
±
0.17
W
T
a
P
T
T
b
A
L
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ASC_WA04/06_V15
Oct.2010
Approval sheet
WA04X
L
W
T
P
A
B
C
G
2.00
±
0.10
1.00
±
0.10
0.45
±
0.10
0.50
±
0.05
0.40
±
0.10
0.20
±
0.10
0.30
±
0.05
0.25
±
0.10
WA06X
3.20
±
0.10
1.60
±
0.10
0.50
±
0.10
0.80
±
0.10
0.60
±
0.10
0.30
±
0.10
0.40
±
0.10
0.30
±
0.20
WA06W
L
W
T
B
G
D
P
H1
H2
4.00
±
0.20
1.60
±
0.15
0.45
±
0.10
0.30
±
0.20
0.30
±
0.20
0.20
±
0.10
0.50
±
0.20
0.40
±
0.20
0.30
±
0.10
WA06T
L
W
T
P
A
B
C
G
3.20+0.20/-0.10
1.60+0.20/-0.10
0.60
±
0.10
0.80
±
0.10
0.60
±
0.15
0.35
±
0.15
0.50
±
0.15
0.50
±
0.15
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ASC_WA04/06_V15
Oct.2010
Approval sheet
MARKING
3-digits marking for E24 series 1% ,5% products
Each resistor is marked with a three digits code on the protective coating to designate the nominal resistance
value. For values up to 9.1 the R is used as a decimal point. For values of 10.0 or greater the first 2 digits
apply to the resistance value and third indicate the number of zeros to follow.
Example
RESISTANCE
3-digits marking
4.7Ω
4R7
10Ω
100
100Ω
101
6800Ω
682
47000Ω
473
No marking for WA04Y chip resistors array and E96 series resistance.
FUNCTIONAL DESCRIPTION
Product characterization
Standard values of nominal resistance are taken from the E24 series for resistors with a tolerance of
±5%,
The values of the E24 series are in accordance with “IEC publication 60063”
Standard values of nominal resistance are taken from the E24/E96 series for resistors with a tolerance of
±1%,
The values of the E24/E96 series are in accordance with “IEC publication 60063”
Derating
The power that the resistor can dissipate depends on the operating temperature; see Fig.3.
Figure 3
Maximum dissipation in percentage of rated power as a
function of the ambient temperature
CONSTRUCTION
R1=R2=R3=R4
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ASC_WA04/06_V15
Oct.2010
PCB Design
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