Datasheet > WR423K72%RE

WR423K72%RE

更新时间： 2024-11-13 06:50:27

品牌	Logo	应用领域
威世 - VISHAY		/
页数	文件大小	规格书
5页	125K
描述
Fixed Resistor, Metal Oxide Film, 2W, 23700ohm, 500V, 2% +/-Tol, -200,200ppm/Cel,

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WR423K72%RE 数据手册

WK/WR

Vishay Draloric

High Power Metal Oxide Leaded Resistors

FEATURES

• Rugged metal oxide film

• High power dissipation in small size (1 W/0207

size to 4 W/0922 size)

• High temperature coating (up to 200 °C),

non-flammable

• Lead (Pb)-free solder contacts

• Pure tin plating provides compatibility with lead (Pb)-free

and lead containing soldering processes

• Compliant to RoHS directive 2002/95/EC

STANDARD ELECTRICAL SPECIFICATIONS

RATED DISSIPATION LIMITING ELEMENT TEMPERATURE

TOLERANCE

RESISTANCE

RANGE

MODEL

SIZE

P₇₀

VOLTAGE U_max.

V≅

COEFFICIENT

ppm/K

E-SERIES

WK2

WR4

0207

0414

1.0

2.0

500

4.7 Ω to 1 MΩ

E24, E96

1 Ω to 1 MΩ

0.22 Ω to 1 MΩ

E24, E48

E24

100

200

0.22 Ω to 1 MΩ

E24

1 Ω to 1 MΩ

0.33 Ω to 1 MΩ

E24, E48

E24

1 Ω to 100 kΩ

0.22 Ω to 560 kΩ

E24, E48

E24

WR5

WK8

0617

0922

3.0

4.0

750

200

1 Ω to 68 kΩ

0.22 Ω to 100 kΩ

E24, E48

E24

Notes

• Coating: Green

• Marking: WK2 and WR4 have color code marking. WR4 has no TCR band. WR5 and WK8 are printed marked.

TECHNICAL SPECIFICATIONS

PARAMETER

UNIT

WK2

1.0

WR4

2.0

WR5

3.0

WK8

4.0

Rated Dissipation, P₇₀

Limiting Element Voltage, U_max.

Insulation Voltage, U_ins(1 Min)

Thermal Resistance, R_th

Insulation Resistance

(1)

V≅

500

750

> 500

≤ 140

> 500

≤ 100

> 500

≤ 70

> 500

≤ 60

K/W

> 10⁹

Category Temperature Range ⁽²⁾

Failure Rate

°C

- 55 to + 200

< 1

10^-8/h

Weight

0.2

0.7

1.5

3.5

Notes

⁽¹⁾Rated Voltage P x R

⁽²⁾For values < 10R the upper limiting temperature is 155 °C. The power rating is correspondingly lower and can be calculated by R_th.

www.vishay.com

176

For technical questions, contact: filmresistorsleaded@vishay.com

Document Number: 20128

Revision: 03-Feb-10

12 3 4 5

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