WH5-220RJI [ETC]
WIDERSTAND LEISTUNG CHASSI 220R 100V 10W ; WIDERSTAND LEISTUNG沙西220R 100V 10W\n
| 型号： | WH5-220RJI |
| 厂家： | 
ETC |
| 描述： | WIDERSTAND LEISTUNG CHASSI 220R 100V 10W
|
| 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
10
15
25
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
AA
BA
CA
DA
Power rating at 25°C
watts
10
15
25
40
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.
© Welwyn Components Limited
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
A
Max
30.0
36.5
51.0
72.5
G
B
±0.3
12.4
15.9
19.8
21.4
H
C
E
F
Max
17
±0.3
11.3
14.3
18.3
39.7
L
Min
1.9
1.9
2.8
2.8
M
WH5
WH10
WH25
WH50
Type
21
28
30
N
Max
9
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
2.6
WH5
WH10
WH25
WH50
11
2.4
15
3.3
16
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
1.0
1.0
1.0
1.0
∆R %
∆R %
0.4
1.0
0.4
Zero at 200°C
1.0
Short term overload
∆R %
∆R %
1.0
1.0
0.2
0.4
Climatic sequence
1.0
Climatic category
55/200/56
1.0
Long term damp heat
∆R %
∆R %
∆R %
∆R %
0.5
0.25
0.2
0.1
Temperature rapid change
Resistance to solder heat
Vibration and bump
0.25
0.25
0.25
0.05
0.25
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
volts AC peak
See application
notes
© Welwyn Components Limited
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
50
40
30
20
10
Reference aluminium heatsink dimension
CECC 40203-006
L
W
CM
10
H
REFERENCE
CM
15.5
18
CM AREA SQ. CM
CA
544cm2
AA, BA
CA, DA
5
5
410
544
13
CA
Aluminium thickness 1mm
BA
AA
Reference chassis
410cm2
H
5
10
50 100
500 1000
HEATSINK SURFACE AREA (cm2)
L
W
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.
© Welwyn Components Limited
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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