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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*

(Inch Size Code)

Dimensions

inches

(mm)

(01005)

Solder

Plating

.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

(0201)

(0402)

(0603)

(0805)

Protective

Coating

Resistive Inner

Film

Electrode

Plating

Ceramic

Substrate

.063±.008 .031±.004 .012±.004 .012±.004 .018±.004

(1.6±0.2)

(0.8±0.1)

(0.3±0.1)

(0.3±0.1) (0.45±0.1)

.079±.008 .049±.004 .016±.008

(2.0±0.2) (1.25±0.1) (0.4±0.2)

.063±.008

.126±.008

(1.6±0.2)

(3.2±0.2)

.102±.008

(2.6±0.2)

.197±.008 .098±.008

(5.0±0.2)

(2.5±0.2)

.012

(0.3

+.008

-.004

+0.2

)

-0.1

Derating Curve

100

% Rated Power

100

1H, 1E, 1J, 2A, 2B, 2E,

W2H, W3A (1W)

.02±.004

(0.5±0.1)

(1206)

(1210)

(2010)

W2H

(2010)

-60 -40

-55

W3A2

.016

(0.4

1E, 1H, 1J, 2A, 2B, 2E, 2H,

3A, W2H, W3A

+.008

-.004

+0.2

-0.1

)

100 120

140

160 180

125

155

Ambient Temperature

(°C)

-20

100 120

140 160

125

155

Terminal Part Temperature

(°C)

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.

For resistors operated at a terminal part

temperature of described for each size or

above, a power rating shall be derated in

(2512)

accordance with the above derating curve.

Please refer to “Introduction of the derating

W3A/W3A2

curve based on the terminal part temperature”

(2512)

in the beginning of our catalog before use.

.02±.012 .026±.006 .024±.004

(0.5±0.3) (0.65±0.15) (0.6±0.1)

.016

(0.4

+.008

-.004

+0.2

)

-0.1

.248±.008 .122±.008

(6.3±0.2)

(3.1±0.2)

.026±.006

(0.65±0.15)

ordering information

New Part #

RK73B

Type

Size

W2H

W3A

New

W3A2

Termination

Material

T: Sn

(1F ~ W3A2)

Contact factory

for below options:

L: SnPb

(1E, 1J, 2A, 2B,

2E, 2H, 3A)

G: Au

(1E ~ 2A:

10Ω ~ 1MΩ)

* Parentheses indicate EIA package size codes.

Packaging

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

102

Nominal

Resistance

2 significant

figures + 1

multiplier

“R” indicates

decimal on

value <10Ω

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

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

±400

±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

0.125W

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.

environmental applications

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

Requirement

∆

R (%+0.1Ω)

Limit

Typical

Within specified tolerance

Within specified T.C.R.

±2%

—

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

10/31/17

Test Method

±1%: 1F

±0.5%: Another

±0.5%: 1F~W3A2

±1%: 1F~W3A2 (10Ω≤R≤1MΩ)

(10Ω≤R≤1MΩ); ±1%:

±3%: 1F~W3A2 (R<10Ω, R>1MΩ) 1F~W3A2 (R<10Ω, R>1MΩ)

±1%: 1F

±0.5%: Another

±2%: 1J, 2A, 2B

±3%: Another

±2%: 1J, 2A, 2B

±3%: Another

±1%

±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

Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.

KOA Speer Electronics, Inc.

• 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com