precision 0.5%, 1% tolerance
thick film chip resistor
EU
features
• Products with lead-free terminations meet
EU RoHS requirements. EU RoHS regulation
is not intended for Pb-glass contained in electrode,
resistor element and glass.
• AEC-Q200 Tested: 0201 (1H), 0402 (1E), 0603 (1J),
0805 (2A), 1206 (2B), 1210 (2E), 2010 (2H/W2H), 2512
(3A/W3A/W3A2)
Type*
L
(Inch Size Code)
dimensions and construction
L
c
c
Sn
Plating
Protective
Coating
d
Resistive Inner
Film
Electrode
Ceramic
Substrate
1H, 1E, 1J, 2A, 2B, 2E,
W2H, W3A (1W)
80
% Rated Power
100
1H, 1E, 1J, 2A, 2B,
2E, W2H, W3A (1W),
W3A2 (2W)
1F
80
60
40
20
60
0
-60
-40
-20
0
-55
40
1H
(0201)
.024±.001 .012±.001 .004±.002 .006±.002 .009±.001
(0.6±0.03) (0.3±0.03) (0.1±0.05) (0.15±0.05) (0.23±0.03)
.039 +.004
-.002
(1.0 +0.1
-0.05 )
1J
(0603)
100
Derating Curve
.016±.0008 .008±.0008 .004±.001 .004±.001 .005±.0008
(0.4±0.02) (0.2±0.02) (0.1±0.03) (0.11±0.03) (0.13±0.02)
1E AT
(0402)
Ni
Plating
t
20
40
60
80
100 120
70
Terminal Part Temperature
(°C)
140
125
160
155
+.002
.008±.004 .01 -.004
.02±.002 (0.2±0.1) (0.25 +0.05
-0.1 ) .014±.002
(0.5±0.05)
(0.35±0.05)
.01±.004 .012±.006
(0.25±0.1) (0.3±0.15)
1J AT
(0603)
.012±.004 .012±.004
(0.3±0.1) .018±.004
.063±.008 .031±.004 (0.3±0.1)
(1.6±0.2)
(0.8±0.1) .014±.006 .02±.008 (0.45±0.1)
(0.35±0.15) (0.5±0.2)
2A
(0805)
.016±.008
(0.4±0.2)
.012
.02±.012
(0.5±0.3)
.016
-55
2B
(1206)
80
0
20
40
60
80
100 120 140
70
Ambient Temperature
(°C)
125
160
155
For resistors operated at an ambient
temperature of 70°C or higher, the
power shall be derated in accordance
with the above derating curve.
% Rated Power
0
-60 -40 -20
W3A2
60
40
20
0
-60
-40
-55
-20
0
20
40
60
80
100 120 140
95
Terminal Part Temperature
(°C)
160
155
When the terminal part temperature of the resistor exceeds the rated terminal part
temperature shown above, the power shall be derated according to the derating curve.
Please refer to “Introduction of the derating curves based on the terminal part temperature”
on the beginning of our catalog before use
*Parentheses indicate EIA package size codes.
*1 RK73H 2H, 3A and 3A2 are also still available (different “d” dimensions = 0.4 +0.2/-0.1mm)
ordering information
RK73H
2B
T
Type
Size
Characteristics
1F, 1H
1E, 1J
2A, 2B
2E
W2H
W3A
2H, 3A
W3A2
Nil:Standard
New A: Heat
shock
resistance *2
Termination
Material
T: Sn
G: Au *3
(L:Sn/Pb*4)
*2 With type A only T is available as the
terminal surface material.
(0.3
+.008
-.004
+0.2 )
-0.1
.02±.004
(0.5±0.1)
.079±.008 .049±.004
(2.0±0.2) (1.25±0.1) .018±.010 .024±.008 .022±.004
(0.45±0.25) (0.6±0.2) (0.55±0.1)
2A AT
(0805)
100
20
t
1F
(01005)
1E
(0402)
W
Dimensions inches (mm)
W
c
d
.063±.008
(1.6±0.2)
.126±.008
(3.2±0.2)
2B AT
(1206)
2E
(1210)
.022±.014 .031±.008
(0.55±0.35) (0.8±0.2)
.102±.008
(2.6±0.2)
2H
(2010)
(0.4
.016
(0.4
.197±.008 .098±.008
(5.0±0.2)
(2.5±0.2)
W2H *1
(2010)
3A *1
(2512)
W3A/W3A2*
(2512)
1
TX: 4mm width - 1mm pitch plastic embossed
TBL - TCM: 2mm pitch press paper
TPL - TP: 2mm pitch punch paper
TD: 4mm pitch punch paper
TE: 4mm pitch plastic embossed
*3 Products with gold plated electrodes are also available with 1E, 1J and 2A types (10Ω〜1MΩ), so please
consult with us
.024±.004
(0.6±0.1)
(0.4 +0.2
-0.1 )
.026±.006
(0.65±0.15)
TD
Packaging
+.008
-.004
+0.2 )
-0.1
.026±.006
.02±.012 (0.65±0.15)
(0.5±0.3)
.016 +.008
-.004
.248±.008 .122±.008
(6.3±0.2)
(3.1±0.2)
*4 With type 1F, 1H, W2H, W3A, W3A2 only T is available as the terminal surface material.
+.008
-.004
+0.2 )
-0.1
1003
F
Nominal
Resistance
3 significant
figures + 1
multiplier
“R” indicates
decimal on
value
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