For further information on packaging, please refer to Appendix A
102
Nominal
Resistance
2 significant
figures + 1
multiplier
“R” indicates
decimal on
value <10Ω
J
Tolerance
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.
10/31/17
KOA Speer Electronics, Inc.
• 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
13
resistors
RK73B
RK73B
general purpose 2%, 5% tolerance
thick film chip resistor
applications and ratings
Part
Designation
Power
Rating
Rated
Ambient
Temp.
Rated
Terminal
Part
Temp.
—
T.C.R.
(x10
-6
/K)
±200
RK73B1F
(01005)
RK73B1H
(0201)
RK73B1E
(0402)
RK73B1J
(0603)
RK73B2A
(0805)
RK73B2B
(1206)
RK73B2E
(1210)
RK73BW2H/2H
(2010)
RK73BW3A/3A
(2512)
NEW
RK73BW3A2
(2512)
0.03W
±250
0~+300
±200
±400
±200
±200
±400
±200
±200
0.25W
70°C
125°C
0.25W
±400
±200
±400
±200
±400
±200
0.75W
±400
±200
1.0W
±400
2.0W
––
±200
95°C
±400
—
10Ω - 5.6MΩ
—
6.2MΩ - 22MΩ
1Ω - 5.6MΩ
6.2MΩ - 22MΩ
200V
400V
Resistance Range
G±2%
E-24
100kΩ - 1MΩ
10Ω - 91kΩ
1Ω - 9.1Ω
10Ω - 10MΩ
—
1Ω - 10MΩ
1.1kΩ - 1MΩ
—
1Ω - 1kΩ
1Ω - 1MΩ
1.1MΩ - 10MΩ
1Ω - 5.6MΩ
6.2MΩ - 10MΩ
10Ω - 5.6MΩ
—
10Ω - 5.6MΩ
—
10Ω - 5.6MΩ
J±5%
E-24
100kΩ - 10MΩ
10Ω - 91kΩ
1Ω - 9.1Ω
10Ω - 10MΩ
1Ω - 9.1Ω
1Ω - 10MΩ
1.1kΩ - 10MΩ
11MΩ - 22MΩ
1Ω - 1kΩ
1Ω - 1MΩ
1.1MΩ - 10MΩ
1Ω - 5.6MΩ
6.2MΩ - 22MΩ
1Ω - 5.6MΩ
6.2MΩ - 10MΩ
1Ω - 5.6MΩ
6.2MΩ - 22MΩ
1Ω - 5.6MΩ
200V
400V
200V
400V
150V
200V
-55°C to
+155°C
75V
20V
30V
50V
-55°C to
+125°C
Maximum
Working
Voltage
Maximum
Overload
Voltage
Operating
Temperature
Range
resistors
0.05W
0.1W
0.1W
0.125W
25V
50V
100V
0.50W
Rated voltage =
√Power
rating x resistance value or max. working voltage, whichever is lower
If any questions arise on whether to use the “Rated Ambient Temperaute” or the “Rated Terminal Part Temperature” in your usage conditions, please give priority to the “Rated
Terminal Part Temperature.” Prior to use and for more details, refer to “Introduction of the derating curves based on the terminal part temperature” in the beginning of our catalog.
Temperature rise at high power will depend on PCB layout. Be sure to contact factory prior to use and monitor terminal part temperature.
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