Datasheet > W21/5R1/5

W21/5R1/5

更新时间： 2024-11-18 23:41:27

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WIDERSTAND DRAHT EMAILL 5R1 100V 2.5W

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W21/5R1/5 数据手册

Vitreous Enamelled

Wirewound Resistors

W20 SERIES

● All welded construction

● High purity ceramic substrate

● Impervious lead free vitreous enamel coating

● High power dissipation for size

● High stability and reliability

● Suitable for harsh environments

● Overload characteristics ideal

for protection circuits

Electrical Data

Commercial

W21

3.0

1 to 10k

0.5 to 10k

0.1 to 10k

W215

5.0

1 to 15k

W22

7.0

1 to 22k

0.5 to 22k

0.1 to 22k

W23

10.0

1 to 60k

W24

14.0

1 to 100k

0.2 to 100k

Power rating at 25°C

Resistance range at

watts

ohms

pp/°C

1% tolerance

2% tolerance

5% tolerance

0.5 to 15k

0.1 to 15k

Typically: <+75

1 to 60k

0.15 to 60k

Maximum: +200

TCR (-55° to 200°C)

Approved BS CECC 40-201-002

Power rating at 25°C

Power rating at 70°C

Style

watts

ohms

ppm/°C

2.9

2.5

5.0

4.3

7.0

6.0

10.0

9.0

14.0

12.0

Resistance range at

1% tolerance

1 to 10k

0.5 to 10k

0.1 to 10k

1 to 15k

0.5 to 15k

0.1 to 15k

1 to 20k

0.5 to 20k

0.1 to 20k

1 to 56k

0.15 to 56k

≥10 ohms: ±200

1 to 100k

0.2 to 100k

2% tolerance

5% tolerance

TCR (-55° to 200°C)

≥5 ohms < 10 ohms: ±400

Applicable to commercial and approved ranges

Limiting element voltage

Standard values

Thermal impedance

volts

100

160

200

500

750

E24 preferred. Other values to special order

°C/watt

°C

Ambient temperature range

-55 to 200

Physical Data

Dimensions (mm) & weight (g)

Type

W21

W215

W22

W23

W24

L max

12.7

22.0

38.0

53.5

D max

5.6

7.0

8.0

f min

22.75

23.1

d nom

Wt.nom

0.8

3.5

d dia

8.0

CONSTRUCTION

400

300

200

100

A high purity ceramic substrate is assembled with interference fit end caps to which

are welded the termination wires. The resistive element is wound on the substrate

and welded to the caps; the vitreous enamel protective coating is then applied.

W215

W21

W23

W24

W22

TERMINATIONS

Material

Copper clad steel wire, nickel plated and solder-coated.

The terminations meet the requirements of IEC 68.2.21.

The terminations meet the requirements of IEC 115-1,–

Clause 4.17.3.2.

W23’s and W24’s are not supplied on tape.

Minimum lead length is 30 mm.

Strength

Solderability

Length

MARKING

The resistors are legend marked with type reference, resistance value and tolerance.

Values are marked in accordance with IEC 62.

Dissipation – Watts

SOLVENT RESISTANCE

The body protection and marking are resistant to all normal industrial cleaning

solvents suitable for printed circuits.

General Note

Welwyn Components reserves the right to make changes in product specification without notice or liability.

All information is subject to Welwyn’s own data and is considered accurate at time of going to print.

Bedlington, Northumberland NE22 7AA, England Tel: 01670 822181 Fax: 01670 829465 Web: http://www.Welwyn-TT.co.uk

Issue A 07/99

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