RK73B
general purpose 2%, 5% tolerance
thick film chip resistor
resistors
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 Qualified: 0201 (1H), 0402 (1E), 0603 (1J),
0805 (2A), 1206 (2B), 1210 (2E), 2010 (2H/W2H),
2512 (3A/W3A/W3A2)
dimensions and construction
L
c
c
W
Solder
Plating
Ni
Plating
t
d
Protective
Coating
Resistive Inner
Film
Electrode
Ceramic
Substrate
Derating Curve
100
80
80
60
40
1F
1E, 1H, 1J, 2A, 2B, 2E, 2H,
3A,
W2H,
W3A
3A,
W2H,
W3A
20
0
% Rated Power
100
1H, 1E, 1J, 2A, 2B, 2E,
W2H, W3A (1W)
60
W3A2
40
20
0
20
40
60
80
100 120
140
160 180
70
125
155
Ambient Temperature
(°C)
For resistors operated at an ambient
temperature of 70°C or above, a power
rating shall be derated in accordance
with the above derating curve.
0
-60 -40
-55
-20
0
20
40
60
80
100 120
140 160
95
125
155
Terminal Part Temperature
(°C)
RK73B
2B
Type
Size
1F
1H
1E
1J
2A
2B
2E
W2H
W3A
2H
3A
New W3A2
L
T
Termination
Material
T: Sn
(1F ~ W3A2)
Contact factory
for below options:
L: SnPb
(1E, 1J, 2A, 2B,
2E, 2H, 3A)
G: Au
(1E ~ 2A:
10Ω ~ 1MΩ)
t
1F
(01005)
.015±.001 .007±.001 .004±.001 .004±.001 .005±.001
(0.4±0.02) (0.2±0.02) (0.10±0.03) (0.11±0.03) (0.13±0.02)
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)
1E
(0402)
.039
1J
(0603)
.063±.008 .031±.004 .012±.004 .012±.004 .018±.004
(1.6±0.2)
(0.8±0.1)
(0.3±0.1) (0.45±0.1)
(0.3±0.1)
2A
(0805)
.079±.008 .049±.004 .016±.008
(2.0±0.2) (1.25±0.1) (0.4±0.2)
2B
(1206)
.063±.008
.126±.008 (1.6±0.2)
(3.2±0.2) .102±.008
(2.6±0.2)
2E
(1210)
2H
(2010)
W2H
(2010)
For resistors operated at a terminal part
temperature of described for each size or
3A
above, a power rating shall be derated in
(2512)
accordance with the above derating curve.
Please refer to “Introduction of the derating
W3A/W3A2
curve based on the terminal part temperature”
(2512)
in the beginning of our catalog before use.
ordering information
Dimensions inches (mm)
W
c
d
Type*
(Inch Size Code)
(1.0
+.004
-.002
+0.1 )
-0.05
+.002
.02±.002 .008±.004 .01 -.004 .014±.002
(0.5±0.05) (0.2±0.1) (0.25 +0.05) (0.35±0.05)
-0.1
.197±.008 .098±.008
(5.0±0.2)
(2.5±0.2)
.012
(0.3
.016
(0.4
+.008
-.004
+0.2 )
-0.1
.02±.004
(0.5±0.1)
+.008
-.004
+0.2 )
-0.1
.02±.012 .026±.006 .024±.004
(0.5±0.3) (0.65±0.15) (0.6±0.1)
.016
(0.4
.248±.008 .122±.008
(6.3±0.2)
(3.1±0.2)
+.008
-.004
+0.2 )
-0.1
.026±.006
(0.65±0.15)
* Parentheses indicate EIA package size codes.
TD
Packaging
TX: 01005 only: 4mm width - 1mm pitch plastic embossed
TBL: 01005 only: 2mm pitch pressed paper
TA: 0201 only: 1mm pitch pressed paper
TC: 0201 only: 7" 2mm pitch pressed paper
(TC: 10,000 pcs/reel, TCM: 15,000 pcs/reel)
TCD: 0201 only: 10" 2mm pitch pressed paper
TPD: 0402 only: 10" plastic embossed
TPL: 0402 only: 2mm pitch punched paper
TP: 0402, 0603 & 0805: 7" 2mm pitch punched paper
TD: 0603, 0805, 1206 &1210: 7" 4mm pitch punched paper
TDD: 0603, 0805, 1206 &1210: 10" paper tape
TE: 0805, 1206, 1210, 2010 & 2512: 7" plastic embossed
TED: 0805, 1206, 1210, 2010 & 2512: 10" plastic embossed
102
Nominal
Resistance
2 significant
figures + 1
multiplier
“R” indicates
decimal on
value