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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.

10/30/08

RK73-RT

flat chip resistors (anti-sulfuration)

features

Derating Curve

100

80

60

40

20

-60

-40

-20

0

406080100140

70

20

Ambient Temperature

(°C)

0

-55

120

155

Protective

Coating

Inner

Electrode

Resistive

Film

Ceramic

Substrate

Solder

Plating

Ni

Plating

L

c

c

W

t

d

dimensions and

construction

Type

L

-.002

-0.05

-.004

-0.1

-.004

-0.1

-.004

-0.1

.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)

.023±.006

(0.65±0.15)

.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)

W2H

(2010)

W3A

(2512)

(Inch Size Code)

Wc

d

t

Dimensions inches

(mm)

2E

(1210)

ordering information

D: ±0.5%

F: ±1%

G: ±2%

J: ±5%

RT: Sn

Anti-Sulfur

RK73B:

3 digits

RK73H:

4 digits

1E

1J

2A

2B

2E

W2H

W3A

RK73B

RK73H

RK73H

Type

Power

Rating

Nominal

Resistance

Resistance

Tolerance

Termination

Surface Material

Packaging

New Part #

2A

TD

1002

F

RT

EU

due to using high sulfuration-proof inner

top electrode material

resistance are ensured by the use of metal glaze thick film

structure of electrode

2B, 2E, W2H, W3A

Blue protective coat on RK73H

Green protective coat on RK73Z1E

requirements. Pb located in glass material, electrode

and resistor element is exempt per Annex 1, exemption

5 of EU directive 2005/95/EC

RT: Sn

Anti-Sulfur

1E, 1J: 1A

2A, 2B, 2E,

W2H, W3A

TPL: 0402 only: 2mm pitch punch paper

TP: 0402, 0603, 0805: 7" 2mm pitch punch paper

TD: 0603, 0805, 1206, 1210:7" 2mm pitch punched paper

TDD: 0603, 0805, 1206, 1210: 10" paper tape

TE: 0805, 1206, 1210, 2010 & 2512: 7" punched plastic

TED: 0805, 1206, 1210, 2010 & 2512: 10" punched plastic

For further information on packaging, please refer to Appendix A

RK73Z

Type

Current

Rating

Termination

Surface Material

Packaging

New Part #

2A

TD

RT

TPL: 0402 only: 2mm pitch punch paper

TP: 0402, 0603, 0805: 7" 2mm pitch punch paper

TD: 0603, 0805, 1206, 1210:7" 2mm pitch punched paper

TDD: 0603, 0805, 1206, 1210: 10" paper tape

TE: 0805, 1206, 1210, 2010 & 2512: 7" punched plastic

TED: 0805, 1206, 1210, 2010 & 2512: 10" punched plastic

For further information on packaging, please refer to

Appendix A

1733 Reader's Spreads pg1-203:document

1/27/09

4:03 PM

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