resistors
RK73-RT
flat chip resistors (anti-sulfuration)
features
EU
• Excellent anti-sulfuration characteristic
due to using high sulfuration-proof inner
top electrode material
• Excellent heat resistance and weather
resistance are ensured by the use of metal glaze thick film
• High stability and high reliability with the triple-layer
structure of electrode
• Marking: Z1E: Green protective coating
RK73B1E ~ W3A, RK73Z1J ~ W3A: Black
protective coating
RK73H1E ~ W3A: Blue protective coating
• 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 (W2H), 2512 (W3A)
dimensions and construction
L
c
Type
c
L
(Inch Size Code)
W
t
1J
(0603)
80
60
40
20
-20
0
20
40
60
80
70
Ambient Temperature
(°C)
100 120
.197±.008 .098±.008
(5.0±0.2)
(2.5±0.2)
W3A
(2512)
100
.063±.008
.126±.008 (1.6±0.2)
(3.2±0.2) .102±.008
(2.6±0.2)
W2H
(2010)
Derating Curve
.079±.008 .049±.004 .016±.008
(2.0±0.2) (1.25±0.1) (0.4±0.2)
2E
(1210)
Ceramic
Substrate
.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)
Resistive Inner
Electrode
Film
.039
2B
(1206)
Protective
Coating
d
% Rated Power
+.002
-.004
(0.25 +0.05)
-0.1
1E
(0402)
Solder
Plating
Ni
Plating
t
0
-60 -40
-55
+.004
-.002
+0.1 )
-0.05
Dimensions inches (mm)
W
c
d
.248±.008 .122±.008
(6.3±0.2)
(3.1±0.2)
(1.0
.02±.002 .008±.004
(0.5±0.05) (0.2±0.1)
.01
.012
(0.3
.016
(0.4
.02±.012
(0.5±0.3)
+.008
-.004
+0.2 )
-0.1
+.008
-.004
+0.2 )
-0.1
.014±.002
(0.35±0.05)
.02±.004
(0.5±0.1)
.024±.004
(0.6±0.1)
.023±.006
(0.65±0.15)
140
155
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.
ordering information
New Part #
RK73H
1002
F
Nominal
Resistance
RK73B:
3 digits
RK73H:
4 digits
RK73Z:
None
Resistance
Tolerance
D: ±0.5%
F: ±1%
G: ±2%
J: ±5%
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
12/04/12
Type
RK73B
RK73H
RK73Z
14
2A
RT
Power
Rating
1E
1J
2A
2B
2E
W2H
W3A
Termination
Surface Material
RT: Sn
Anti-Sulfur
TD
Packaging
TPL: 0402 only: 2mm pitch punch paper
TP: 0402, 0603, 0805: 7" 2mm pitch punch 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" embossed plastic
TED: 0805, 1206, 1210, 2010 & 2512: 10" embossed plastic
For further information on packaging, please refer to
Appendix A
KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
