features
•Anti-leaching nickel barrier terminations
•For high resolution sound and clarity in signal processing
and audio circuits
•Marking: Three-digit, light blue on black 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.
16 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 1/19/11
RK73A
audio applications 2%, 5% tolerance
chip resistor
dimensions and construction
Protective
Coating Inner
Electrode
Resistive
Film
Ceramic
Substrate
Solder
Plating
Ni
Plating
Lcc
W
t
d
ordering information
G:±2%
J: ±5%
T: Sn
Contact factory
for below options:
L: SnPb
2 significant
figures + 1
multiplier
“R” indicates
decimal on
value <10Ω
1J
2A
2B
TP: 0603, 0805:
7" 2mm pitch punch paper
TD: 0603, 0805, 1206:
7" 4mm pitch punched paper
TDD: 0603, 0805, 1206:
10" paper tape
TE: 0805, 1206:
7" embossed plastic
TED: 0805, 1206:
10" embossed plastic
For further information on packaging,
please refer to Appendix A
RK73A
Type Size Nominal
Resistance Tolerance
Termination
Material Packaging
New Part # 1J TD 102 JT
Type
L
.012 +.008
-.004
(0.3 +0.2)
-0.1
.016 +.008
-.004
(0.4 +0.2)
-0.1
.018±.004
(0.45±0.1)
.012±.004
(0.3±0.1)
.02±.004
(0.5±0.1)
.024±.004
(0.6±0.1)
.012±.004
(0.3±0.1)
.016±.008
(0.4±0.2)
.02±.012
(0.5±0.3)
.063±.008
(1.6±0.2)
.126±.008
(3.2±0.2)
.049±.004
(1.25±0.1)
.031±.004
(0.8±0.1)
.063±.008
(1.6±0.2)
.079±.008
(2.0±0.2)
1J
(0603)
2A
(0805)
2B
(1206)
(Inch Size Code) Wc d t
Dimensions inches (mm)
EU
resistors
RK73A
audio applications 2%, 5% tolerance
chip resistor
Absolute
Maximum
Working
Voltage
Resistance
Range
E-24
(J±5%)
Resistance
Range
E-24
(G±2%)
Part
Designation*
Absolute
Maximum
Overload
Voltage
Operating
Temperature
Range
Power
Rating
@ 70°C
T.C.R.
(ppm/°C)
Max.
applications and ratings
-55°C to +155°C
50V 100V
RK73A1J
(0603) 1/10W (.10W) 2.2Ω - 9.1Ω2.2Ω - 9.1Ω
±200 10Ω - 1MΩ10Ω - 1MΩ
±250
150V 200V
RK73A2A
(0805) 1/8W (.125W) 2.2Ω - 9.1Ω2.2Ω - 9.1Ω
±200 10Ω - 1MΩ10Ω - 1MΩ
±250
200V 400V
RK73A2B
(1206) 1/4W (.25W) 2.2Ω - 9.1Ω2.2Ω - 9.1Ω
±200 10Ω - 1MΩ10Ω - 1MΩ
±250
Derating Curve
environmental applications
% Rated Power
100
80
60
40
20
-60 -40 -20 0 406080100140
70
20
Ambient Temperature
(°C)
0
-55 120 155
17
KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 1/05/13
* Parentheses indicate EIA package size codes.
Performance Characteristics
Parameter
Requirement ∆ R ±(%+0.05Ω)
Limit Typical Test Method
Resistance
T.C.R.
25°C
+25°C/-55°C and +25°C/+125°C
Within specified
tolerance
Within specified
T.C.R.
—
—
Overload (Short time) Rated Voltage x 2.5 for 5 seconds
(2B: Rated Voltage x 2 for 5 seconds)
±2% ±2%
Resistance to Solder Heat 260°C ± 5°C, 10 seconds ± 1 second
±1%, ±3%:
(R<10Ω,R>1MΩ)±0.5%, ±1%:
(R<10Ω,R>1MΩ)
Rapid Change of Temperature -55°C (30 minutes), +125°C (30 minutes), 100 cycles
±0.5% ±0.3%
Moisture Resistance 40°C ± 2°C, 90%-95% RH, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle
±2% ±1%
Endurance at 70°C 70°C ± 2°C, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle
±2% ±0.5%
High Temperature Exposure +155°C, 1000 hours
±1% ±0.5%
environmental applications
resistors
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.
