Protective

Coating

Inner

Electrode

Resistive

Film

Ceramic

Substrate

Solder

Plating

Ni

Plating

L

c

c

W

t

d

RK73B

general purpose 2%, 5% tolerance

thick film chip resistor

features

sizes, black protective coat.

White, three-digit marking on

1J ~ 3A on black protective coat.

requirements. EU RoHS regulation is not intended

for Pb-glass contained in electrode, resistor element

and glass.

(2A), 1206 (2B), 1210 (2E), 2010 (2H/W2H), 2512 (3A/W3A)

dimensions and construction

Type*

L

1H

(0201) .024±.001

(0.6±0.03)

-.002

-0.05

-.004

-0.1

-.004

-0.1

-.004

-0.1

-.004

-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)

(InchSizeCode)

Wc

d

t

Dimensionsinches(mm)

ordering information

G: ±2%

J: ±5%

T: Sn

(1F ~ 3A)

Contact factory

for below options:

L: SnPb

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

2E, 2H, 3A)

G: Au

(1E ~ 2A:

10Ω ~ 1MΩ)

X: Bondable

(1J ~ 2E:

10Ω ~ 1MΩ)

2 significant

figures + 1

multiplier

“R” indicates

decimal on

value <10Ω

1F

1H

1E

1J

2A

2B

2E

W2H

W3A

2H

3A

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

NewPart#

2B

TD

102

J

T

2E

(1210)

DeratingCurve

100

80

60

40

20

20

40

60

80

100 120

140

160 180

125

70

Ambient Temperature

(°C)

1F

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

3A, W2H, W3A

0

0

155

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

(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.

13

KOASpeerElectronics,Inc. • 199BolivarDrive • Bradford,PA16701 • USA • 814-362-5536 • Fax:814-362-8883 • www.koaspeer.com

Specificationsgivenhereinmaybechangedatanytimewithoutpriornotice.Pleaseconfirmtechnicalspecificationsbeforeyouorderand/oruse.

11/27/14

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

1E, 1J, 2A, 2B, 2E, W2H,

W3A, 2H/W2H, 3A/W3A

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”

on the beginning of our catalog before use.