WH10-150RJI [ETC]

RESISTOR 150R 15W ; 电阻150R 15W\n


型号：	WH10-150RJI
厂家：	ETC
描述：	RESISTOR 150R 15W 电阻150R 15W\n
文件：	总3页 (文件大小：148K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

Chassis Mounting

Wirewould Resistors

WH SERIES

● High quality ceramic substrate

● All welded construction

● Anodised extruded aluminium case

● High power dissipation for size

● Suitable for severe environments

● Designed for excellent thermal conductivity

to heatsink

Electrical Data

WH5

EH10

WH25

WH50

NOTES

Power rating at 25°C

watts

50*

Mounted on

standard heatsink

Resistance range

TCR (-55° to 200°C)

Resistance tolerance

Low value limits

ohms 0.01 to 10k 0.01 to 20k 0.01 to 44k 0.015 to 120k

ppm/°C

<10Ω : ±75

≥ to <100 : ±50

≥100Ω : ±25

1, 2, 5, 10

ohms

1 at 1%

0.5 at 2%

0.05 at 5%

0.01 at 10%

WH50 0.015 at 10%

APPROVED CECC 40203 - 006

Power rating at 25°C

watts

Mounted on

standard heatsink

Resistance range

TCR (-55° to 200°C)

Resistance tolerance

Low value limits

ohms 0.05 to 3.4k 0.05 to 15k 0.05 to 33k 0.05 to 82k

ppm/°C

≥5Ω ≤ 10Ω ± 100

1, 2, 5

1 at 1% 0.5 at 2%

>10Ω ± 50

0.05 at 5%

500

ohms

Limiting element voltage volts

Standard values

150

250

1250

3.5

E24 preferred range

Other values

to special order

Mounted on

Thermal impedance

°C/watt

16.0

10.0 6.0

standard heatsink

Operating temperature range °C

-55 to 200

*For load at maximum rating mount on heatsink 30.5 cm x 30.5 cm x 1.5 mm

CONSTRUCTION

MARKING

Cap and lead assemblies are fitted to a high purity ceramic

substrate. The resistive element is wound onto the

substrate and welded to the caps. The wound rod is then

moulded and fitted into an aluminium housing to give

optimum stability and reliability.

The resistors are legend marked with type reference,

resistance value and tolerance. Values are marked in

accordance with IEC 62.

SOLVENT RESISTANCE

Resistor and marking withstand all accepted industrial

cleaning fluids.

TERMINATIONS

Material

Strength

Solder dipped, copper clad steel wire.

The terminations meet the requirements of

IEC 68.2.21

Solderability

The terminations meet the requirements of

IEC 115-1, Clause 4.17.3.2

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

Chassis Mounting

Wirewound Resistors

WH SERIES

Physical Data

DIMENSIONS (MM)

Type

Max

30.0

36.5

51.0

72.5

±0.3

12.4

15.9

19.8

21.4

Max

±0.3

11.3

14.3

18.3

39.7

Min

1.9

2.8

WH5

WH10

WH25

WH50

Type

Max

Dia ±0.2

2.4

Max

17.0

21.0

29.0

51.0

±0.5

4.3

5.2

7.2

7.9

Max

1.8

2.2

2.6

WH5

WH10

WH25

WH50

2.4

3.3

Performance Data

CECC

ACTUAL

NOTES

40203-006 MAXIMUM

TYPICAL

0.4

Load at commercial rating: 1000 hrs at 25°C

Load at CECC rating: 1000 hours at 25°C

Dry heat: 100 hours at 200°C

Derating from 25°C

∆R %

1.0

∆R %

0.4

1.0

0.4

Zero at 200°C

1.0

Short term overload

∆R %

1.0

0.2

0.4

Climatic sequence

1.0

Climatic category

55/200/56

1.0

Long term damp heat

∆R %

0.5

0.25

0.2

0.1

Temperature rapid change

Resistance to solder heat

Vibration and bump

0.25

0.05

0.25

0-.025

zero

Noise (in decade of frequency)

Insulation resistance.

µV/V Not specified

zero

ohms

>1Gohm

1000 min

2000 min

>20Tohm

1500 min

3000 min

>100Gohm

Isolation voltage : WH5 and 10

: WH25 and 50

volts AC peak

See application

notes

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

Issue A 07/99

Chassis Mounting

Wirewound Resistors

WH SERIES

APPLICATION NOTES

CECC 40 STYLE

Reference aluminium heatsink dimension

CECC 40203-006

REFERENCE

15.5

CM AREA SQ. CM

544cm²

AA, BA

CA, DA

410

544

Aluminium thickness 1mm

Reference chassis

410cm²

50 100

500 1000

HEATSINK SURFACE AREA (cm²)

WH50 ONLY

To load at maximum commercial rating (50W) mount

on heatsink 30.5cm x 30.5cm x 1.5mm.

Derating must be applied when resistors are

mounted on a heat sink of smaller dimensions than

defined in the table for reference heatsink.

It is recommended that the resistor base should be

coated with silicone grease before mounting to

obtain the stated operating characteristics.

The grease increases thermal conductivity to the

heatsink.

After soldering care should be taken to ensure that

there are no flux residues on the moulding

compound, otherwise insulation resistance will be

reduced.

PACKAGING

Resistors are packed in plastic bags and boxed for

maximum protection.

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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