general purpose 2%, 5% tolerance
thick film chip resistor
EU
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 Tested: 0201 (1H), 0402 (1E), 0603 (1J),
0805 (2A), 1206 (2B), 1210 (2E), 2010 (2H/W2H),
2512 (3A/W3A/W3A2)
Type*
1
(Inch Size Code)
L
Dimensions
inches
(mm)
W
c
d
t
dimensions and construction
c
L
c
1F
(01005)
1H
(0201)
.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)
.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)
.039
(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
W
Sn
Plating
t
d
Protective
Coating
Resistive Inner
Film
Electrode
Ni
Plating
1E
(0402)
1J
(0603)
1J AT
(0603)
1H, 1E, 1J, 2A, 2B, 2E,
W2H, W3A (1W)
Ceramic
Substrate
Derating Curve
100
1F
100
80
% Rated Power
60
40
20
2A
(0805)
2A AT
(0805)
80
60
40
20
0
-60 -40 -20
-55
1H, 1E, 1J, 2A, 2B,
2E, W2H, W3A (1W),
W3A2 (2W)
0
-60
-55
-40
-20
0
20
40
60
80
100 120
140
160
155
70
Terminal Part Temperature
(°C)
125
2B
(1206)
2B AT
(1206)
2E
(1210)
2H
(2010)
0
20
40
60
80
100 120 140
125
160
155
100
80
% Rated Power
60
40
20
0
-60
-55
W3A2
70
Ambient Temperature
(°C)
For resistors operated at an ambient
temperature of 70°C or higher, the
power shall be derated in accordance
with the above derating curve.
.012±.004 .012±.004
(0.3±0.1)
.018±.004
.063±.008 .031±.004
(0.3±0.1)
(1.6±0.2)
(0.8±0.1)
.014±.006 .02±.008
(0.45±0.1)
(0.35±0.15) (0.5±0.2)
+.008
.016±.008 .012
-.004
.02±.004
(0.4±0.2)
(0.5±0.1)
(0.3
+0.2
)
.079±.008 .049±.004
-0.1
(2.0±0.2) (1.25±0.1)
.018±.010 .024±.008 .022±.004
(0.45±0.25) (0.6±0.2) (0.55±0.1)
.016
+.008
-.004
.02±.012
+0.2
)
.063±.008
(0.5±0.3)
(0.4
-0.1
(1.6±0.2)
.126±.008
.022±.012 .031±.008
(3.2±0.2)
(0.55±0.35) (0.8±0.2)
.102±.008
.016
+.008
(2.6±0.2)
-.004
.197±.008 .098±.008
(5.0±0.2)
(2.5±0.2)
(0.4
+0.2
)
-0.1
.02±.012 .026±.006
(0.5±0.3) (0.65±0.15)
.016
.248±.008 .122±.008
(6.3±0.2)
(3.1±0.2)
(0.4
+.008
-.004
+0.2
)
-0.1
.024±.004
(0.6±0.1)
-40
-20
0
20
40
60
80
100 120 140
160
155
95
Terminal Part Temperature
(°C)
W2H
(2010)
3A
(2512)
When the terminal part temperature of the resistor exceeds the rated terminal part
temperature shown above, the power shall be derated according to the derating curve.
Please refer to “Introduction of the derating curves based on the terminal part temperature”
on the beginning of our catalog before use
ordering information
RK73B
Type
2B
Size
1F
1H
1E
1J
2A
2B
2E
W2H
W3A
2H
3A
W3A2
Characteristics
Nil: Standard
New
A: Heat shock
resistance *
2
T
Termination
Material
T: Sn
G: Au *
3
(L: Sn/Pb*
4
)
W3A/W3A2
.026±.006
(2512)
(0.65±0.15)
*
1
Parentheses indicate EIA package size codes.
TD
Packaging
TX: 4mm width - 1mm pitch plastic
embossed
TBL - TCM: 2mm pitch press paper
TPL - TP: 2mm pitch punch paper
TD: 4mm pitch punch paper
TE: 4mm pitch plastic embossed
102
Nominal
Resistance
2 significant
figures + 1
multiplier
“R” indicates
decimal on
value <10Ω
J
Tolerance
G: ±2%
J: ±5%
*2 With type A only T is available as the terminal surface
material.
*3
Products with gold plated electrodes are also available
with 1E, 1J and 2A types (10Ω〜1MΩ), so please
consult with us.
*4
With type 1F, 1H, W2H, W3A, W3A2 only T is available
as the terminal surface material.
The terminal surface material lead free is standard.
For further information on packaging, please refer to
Appendix A
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
1/24/22
KOA Speer Electronics, Inc.
• 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
15
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
±250
0~+300
±200
±400
±200
±200
±400
±200
±200
±400
±200
±400
±200
±400
±200
±400
±200
±400
±200
±400
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
—
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
6.2MΩ - 22MΩ
1Ω - 5.6MΩ
6.2MΩ - 22MΩ
200V
400V
Maximum
Working
Voltage
Maximum
Overload
Voltage
Operating
Temperature
Range
-55°C to
+125°C
One-Pulse Limiting Electric Power (W)
Temperature Rise (°C)
Temperature Rise (°C)
1E
1J
80
70
60
2E
Temperature Rise (°C)
50
1J
250
W3A2
One-Pulse Limiting Electric
resistors
RK73B1F (01005)
0.03W
0.05W
0.1W
0.1W
0.125W
20V
30V
RK73B1H (0201)
RK73B1E (0402)
RK73B1J (0603)
25V
75V
75V
50V
100V
RK73B2A (0805)
RK73B2B (1206)
RK73B2E (1210)
RK73BW2H/2H
(2010)
RK73BW3A/3A
(2512)
RK73BW3A2
(2512)
0.25W
70°C
0.25W
0.50W
0.75W
1.0W
2.0W
95°C
125°C
150V
200V
-55°C to
+155°C
200V
200V
400V
400V
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.
environmental applications
Temperature Rise
RK73B 1F-1J
60
1E
One-Pulse Limiting Electric Power
RK73B 1F-2A
100
RK73B 2A-2E
100
90
2E
RK73B W2H-W3A2
300
RK73B 2B-W3A2
1000
W3A2
10
40
1H
1F
1H
2B
2A
2B
200
W3A
100
W3A/W3A2
2A
1
1J
1E
0.1
1H
1F
0.01
0.001
30
1F
50
2A
150
W2H
40
30
20
10
W3A
2H/W2H
10
2E
2B
1
0.001
0.01
0.1
1
10
100
1000
20
100
W2H
10
50
0
0
25
50
75
100
0
0
25
50
75
100
0
0
25
50
75
100
Power Rating
(%)
Power Rating
(%)
Power Rating
(%)
Measurement condition
Room temperature: 25°C
PCB: FR-4t = 1.6mm
Cu foil thickness: 35µm
①:
Hot spot
②:
Terminal
0.01
0.1
1
10
100
1000
Pulse Duration
(ms)
Pulse Duration
(ms)
Regarding the temperature rise, the value of the temperature
varies per conditions and board for use since the temperature
is measured under our measuring conditions.
The maximum applicable voltage is equal to the max. overload voltage. Please ask us
about the resistance characteristic of continuous applied pulse. The pulse endurance
values are not assured values, so be sure to check the products on actual equipment
when you use them.
Performance Characteristics
Parameter
Resistance
T.C.R.
Overload (Short time)
Resistance to Soldering Heat
Rapid Change of Temperature
Moisture Resistance
Endurance at 70°C
High Temperature Exposure
Limit
Requirement
∆
R (%+0.1Ω)
Typical
—
—
±1%: 1F
±0.5%: Another
±0.5%: 1F~W3A2 (10Ω≤R≤1MΩ);
±1%: 1F~W3A2 (R<10Ω, R>1MΩ)
±0.5%: 1F
±0.3%: Another
±0.75%: 1J, 2A, 2B
±1.5%: 1F; ±1%: Another
±0.75%: 1J, 2A, 2B
±1%: Another
±0.5%: 1F
±0.3%: Another
25°C
+25°C/-55°C and +25°C/+125°C
Rated Voltage x 2.5 for 5 seconds
(1E, 2B, W3A2: Rated Voltage x 2 for 5 seconds)
260°C ± 5°C, 10 seconds ± 1 second
-55°C (30 minutes), +125°C (30 minutes), 100 cycles
40°C ± 2°C, 90%-95% RH, 1000 hours, 1.5 hr ON,
0.5 hr OFF cycle
70°C ± 2°C, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle
+125°C, 1000 hours: 1F; +155°C, 1000 hours: 1E, 1H,
1J, 2A, 2B, 2E, 2H/W2H, 3A/W3A/W3A2
10/19/20
Test Method
Within specified tolerance
Within specified T.C.R.
±2%
±1%: 1F~W3A2 (10Ω≤R≤1MΩ)
±3%: 1F~W3A2 (R<10Ω, R>1MΩ)
±1%: 1F
±0.5%: Another
±2%: 1J, 2A, 2B
±3%: Another
±2%: 1J, 2A, 2B
±3%: Another
±1%
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
16
KOA Speer Electronics, Inc.
• 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
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