resistors
RK73B
general purpose 2%, 5% tolerance
thick film chip resistor
EU
features
• Marking: No marking on 1F, 1H & 1E
sizes, black protective coat.
White, three-digit marking on
1J ~ 3A on black protective coat.
• 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: 0402 (1E), 0603 (1J), 0805 (2A),
1206 (2B), 1210 (2E), 2010 (2H/W2H), 2512 (3A/W3A)
dimensions and construction
L
c
Type*
L
(Inch Size Code)
c
Dimensions inches (mm)
W
c
d
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)
80
2B
(1206)
60
2E
(1210)
.063±.008
.126±.008 (1.6±0.2)
(3.2±0.2) .102±.008
(2.6±0.2)
W
Solder
Plating
Ni
Plating
t
Protective
Coating
d
Resistive Inner
Film
Electrode
Ceramic
Substrate
Derating Curve
(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
.012
(0.3
100
40
1F, 1H
2H
(2010)
1E, 1J, 2A, 2B, 2E, 2H,
3A, W2H, W3A
W2H
(2010)
20
0
0
20
40
3A
(2512)
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.
RK73B
2B
Type
Size
1F
1H
1E
1J
2A
2B
2E
W2H
W3A
2H
3A
(0.4
.02±.012
(0.5±0.3)
+.008
-.004
+0.2 )
-0.1
.026±.006 .024±.004
(0.65±0.15) (0.6±0.1)
.016
.248±.008 .122±.008
(6.3±0.2)
(3.1±0.2)
(0.4
+.008
-.004
+0.2 )
-0.1
.026±.006
(0.65±0.15)
T
Termination
Material
T: Sn
(1F ~ 3A)
Contact factory
for below options:
L: SnPb
(1E, 1J, 2A, 2B,
2E, 2H, 3A)
G: Au
(1E ~ 2A:
10Ω ~ 1MΩ)
X: Bondable
(1J ~ 2E:
10Ω ~ 1MΩ)
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
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
For further information on packaging, please refer
to Appendix A
102
Nominal
Resistance
2 significant
figures + 1
multiplier
“R” indicates
decimal on
value <10Ω
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
8
.02±.004
(0.5±0.1)
* Parentheses indicate EIA package size codes.
ordering information
New Part #
W3A
(2512)
.197±.008 .098±.008
(5.0±0.2)
(2.5±0.2)
.016
+.008
-.004
+0.2 )
-0.1
J
Tolerance
G: ±2%
J: ±5%
12/04/12
KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
