Protective
Coating Inner
Electrode
Resistive
Film
Ceramic
Substrate
Solder
Plating
Ni
Plating
Lcc
W
t
d
RK73B
general purpose 2%, 5% tolerance
thick film chip resistor
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 Type*
L
1H
(0201) .024±.001
(0.6±0.03)
.039 +.004
-.002
(1.0 +0.1 )
-0.05
.01 +.002
-.004
(0.25 +0.05)
-0.1
.012 +.008
-.004
(0.3 +0.2)
-0.1
.016 +.008
-.004
(0.4 +0.2)
-0.1
.016 +.008
-.004
(0.4 +0.2)
-0.1
.012±.001
(0.3±0.03) .004±.002
(0.1±0.05) .006±.002
(0.15±0.05) .009±.001
(0.23±0.03)
.014±.002
(0.35±0.05)
.018±.004
(0.45±0.1)
.012±.004
(0.3±0.1)
.02±.004
(0.5±0.1)
.024±.004
(0.6±0.1)
.008±.004
(0.2±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)
.102±.008
(2.6±0.2)
.098±.008
(2.5±0.2)
.122±.008
(3.1±0.2)
.126±.008
(3.2±0.2)
.049±.004
(1.25±0.1)
.031±.004
(0.8±0.1)
.02±.002
(0.5±0.05)
.063±.008
(1.6±0.2)
.079±.008
(2.0±0.2)
.197±.008
(5.0±0.2)
.248±.008
(6.3±0.2)
1E
(0402)
1J
(0603)
2A
(0805)
2B
(1206)
2H
(2010)
3A
(2512)
(Inch Size Code) Wc d t
Dimensions inches (mm)
ordering information
G:±2%
J: ±5%
T: Sn
(1F ~ W3A2)
Contact factory
for below options:
L: SnPb
(1E, 1J, 2A, 2B,
2E, 2H, 3A)
G: Au
(1E ~ 2A:
10Ω~ 1MΩ)
2 significant
figures + 1
multiplier
“R” indicates
decimal on
value <10Ω
1F
1H
1E
1J
2A
2B
2E
W2H
W3A
2H
3A
New W3A2
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
For further information on packaging, please refer to Appendix A
RK73B
Type Size Nominal
Resistance Tolerance
Termination
Material Packaging
2B TD 102 JT
2E
(1210)
Derating Curve
100
80
60
40
20
20 40 60 80 100 120 140 160 180
12570
Ambie nt Tem pe rat ur e
(°C)
1F 1E, 1H, 1J, 2A, 2B, 2E, 2H,
3A, W2H, W3A
00155
3A, W2H, W3A
1F
(01005) .015±.001
(0.4±0.02) .007±.001
(0.2±0.02) .004±.001
(0.10±0.03) .004±.001
(0.11±0.03) .005±.001
(0.13±0.02)
W2H
(2010)
W3A/W3A2
(2512)
EU
.026±.006
(0.65±0.15)
.026±.006
(0.65±0.15)
* Parentheses indicate EIA package size codes.
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.
resistors
13
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. 10/31/17
% Rated Power
100
80
60
40
20
-60 -40 -20 0 40 60 80 100 140
125
20
Terminal Part Temperature
(°C)
0
-55 120 155
160
1H, 1E, 1J, 2A, 2B, 2E,
W2H, W3A (1W)
95
W3A2
For resistors operated at a terminal part
temperature of described for each size or
above, a power rating shall be derated in
accordance with the above derating curve.
Please refer to “Introduction of the derating
curve based on the terminal part temperature”
in the beginning of our catalog before use.
RK73B
general purpose 2%, 5% tolerance
thick film chip resistor
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.
Maximum
Working
Voltage
J±5%
E-24
G±2%
E-24
Part
Designation
Maximum
Overload
Voltage
Operating
Temperature
Range
Power
Rating T.C.R.
(x10-6/K)
applications and ratings
RK73B1H
(0201)
RK73B1E
(0402)
0.05W
0.1W
RK73B1J
(0603) 0.1W
0.125W
RK73B2A
(0805) 0.25W
RK73B2B
(1206)
RK73B2E
(1210)
0.25W
±200 10Ω - 10MΩ10Ω - 10MΩ25V 50V
50V
75V
100V
150V 200V
200V 400V
-55°C to
+125°C
-55°C to
+155°C
Rated
Terminal
Part
Temp.
—
125°C
Rated
Ambient
Temp.
70°C
±200 1Ω - 10MΩ
±400
1Ω - 10MΩ
RK73BW2H/2H
(2010)
RK73BW3A/3A
(2512)
0.75W
1.0W
±200
±200
1.1kΩ - 1MΩ
1Ω - 1kΩ1Ω - 1kΩ
1.1kΩ - 10MΩ
11MΩ - 22MΩ
1Ω - 1MΩ
1.1MΩ - 10MΩ
1Ω - 5.6MΩ
6.2MΩ - 22MΩ
6.2MΩ - 22MΩ
6.2MΩ - 22MΩ
—
1Ω - 1MΩ
1.1MΩ - 10MΩ
1Ω - 5.6MΩ
10Ω - 5.6MΩ
10Ω - 5.6MΩ1Ω - 5.6MΩ
1Ω - 5.6MΩ10Ω - 5.6MΩ
1Ω - 5.6MΩ
6.2MΩ - 10MΩ
6.2MΩ - 10MΩ
±200
±400
±200
±200
0.50W
±400
±400
—
—
—
±200
±400
±200
±400
±400 —1Ω - 9.1Ω
±200 100kΩ - 1MΩ100kΩ - 10MΩ
0.03W
RK73B1F
(01005) 20V 30V
400V200V
±250 10Ω - 91kΩ10Ω - 91kΩ
0~+300 1Ω - 9.1Ω1Ω - 9.1Ω
Performance Characteristics
Parameter
Requirement ∆ R (%+0.1Ω)
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
(1E, 2B, W3A2: Rated Voltage x 2 for 5 seconds)
±2% ±1%: 1F
±0.5%: Another
Resistance to Soldering Heat 260°C ± 5°C, 10 seconds ± 1 second
±1%: 1F~W3A2 (10Ω≤R≤1MΩ)
±3%: 1F~W3A2 (R<10Ω, R>1MΩ)
±0.5%: 1F~W3A2
(10Ω≤R≤1MΩ); ±1%:
1F~W3A2 (R<10Ω, R>1MΩ)
Rapid Change of Temperature -55°C (30 minutes), +125°C (30 minutes), 100 cycles
±1%: 1F
±0.5%: Another ±0.5%: 1F
±0.3%: Another
Moisture Resistance 40°C ± 2°C, 90%-95% RH, 1000 hours, 1.5 hr ON,
0.5 hr OFF cycle
±2%: 1J, 2A, 2B
±3%: Another
±0.75%: 1J, 2A, 2B
±1.5%: 1F
±1%: Another
Endurance at 70°C 70°C ± 2°C, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle
±2%: 1J, 2A, 2B
±3%: Another ±0.75%: 1J, 2A, 2B
±1%: Another
High Temperature Exposure +125°C, 1000 hours: 1F; +155°C, 1000 hours: 1E, 1H,
1J, 2A, 2B, 2E, 2H/W2H, 3A/W3A/W3A2
±1% ±0.5%: 1F
±0.3%: Another
environmental applications
resistors
14 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. 10/31/17
Resistance Range
Rated voltage = √Power rating x resistance value or max. working voltage, whichever is lower
RK73BW3A2
(2512) 2.0W 6.2MΩ - 22MΩ
1Ω - 5.6MΩ10Ω - 5.6MΩ
—
±200
±400 400V
200V
–– 95°C
NEW
