WH5 [TTELEC]
Aluminium Housed Wirewound Resistors; 铝封装线绕电阻器
| 型号： | WH5 |
| 厂家： | 
TT Electronics |
| 描述： | Aluminium Housed Wirewound Resistors |
| 文件： | 总4页 (文件大小：862K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Aluminium Housed
Wirewound Resistors
WH Series
·
·
·
·
·
High power dissipation up to 300W
All welded construction
Suitable for severe environments
Designed for excellent thermal conductivity to heatsink
RoHS compliant
Electrical Data
WH5
WH10
WH25
WH50
50 *
Notes
watts
10
15
25
On standard heatsink
Power rating at 25°C
Resistance range
ohms 0R01 to 10K 0R01 to 20K 0R01 to 44K
0R015 to 120K
TCR (-55° to 200°C)
ppm/°C
<10R: ±75 ≥10R to <100R: ±50 ≥100R: ±25
1(F), 2(G), 5(J) and 10(K)
Resistance tolerance
Low value limits
%
ohms
volts
1R at 1% 0R5 at 2% 0R05 at 5% 0R01 at 10%
WH50 0R015 at 10%
DC or AC peak
Isolation voltage
1500
1500
3000
3000
* For load at maximum rating mount on aluminium heatsink 30.5 cm x 30.5 cm x 1.5 mm
CECC 40203-006 Requirements *
AA
BA
CA
25
DA
40
Notes
watts
10
15
On standard heatsink
Power rating at 25°C
Resistance range
ohms 0R05 to 3K4 0R05 to 15K 0R05 to 33K
ppm/°C ≥5R to ≤10R: ± 100 >10R: ±50
1(F), 2(G), and 5(J)
1R at 1% 0R5 at 2% 0R05 at 5%
1000 2000
0R05 to 82K
TCR (-55° to 200°C)
Resistance tolerance
Low value limits
%
ohms
volts
Isolation voltage
1000
2000
DC or AC peak
* This table indicates the CECC specification requirements which are met or exceeded by the corresponding WH series products.
Limiting element voltage
Standard values
volts
150
250
E24 preferred range
10.0 6.0
-55 to 200
500
1250
3.5
DC or AC rms
Other values to order
On standard heatsink
Thermal impedance
°C/watt
°C
16.0
Ambient temperature range
WH100
WH200
200
WH300
300
Notes
watts
ohms
100
On standard heatsink
Power rating at 25°C
Resistance range
0R01 to 70K
0R01 to 50K
0R01 to 68K
TCR (-55° to 200°C)
Resistance tolerance
ppm/°C
≤1K0: ±100 >1K0: ±25
%
ohms
volts
volts
Standard 5(J) and 10(K). also available : 1(F) and 2(G)
Typically ≥0R05: ±5% ≤0R047: ±10%
7070
Low value limits
Isolation voltage
6360
7070
1900
DC or AC peak
DC or AC rms
Limiting element voltage
Standard values
1900
2500
E24 preferred range
0.7
Other values to order
On standard heatsink
Thermal impedance
Ambient temperature range
°C/watt
°C
1
0.6
-55 to 200
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 test data and is considered accurate at time of print.
Ó We lwyn Compone nts Limite d
Welwyn Electronics Park, Bedlington, Northumberland, NE22 7AA, England. Tel: 01670 822181 Fax: 01670 829465 Web: www.welwyn-tt.com
Aluminium Housed
Wirewound Resistors
Physical Data
Dimensions (mm) & Weight (g)
WH5 - 50
A
B
C
E
F
Max
17
G
H
L
M
±0.5
4.3
5.2
7.2
7.9
N
Max
1.8
2.2
2.6
2.6
Dt
Min
2.5
2.9
4.3
5.1
Wt.
Nom
3.6
5.6
13
Type
Max
30
±0.3
12.4
15.9
19.8
21.4
±0.3
11.3
14.3
18.3
39.7
Min
1.9
1.9
2.8
2.8
Max Dia ±0.2
Max
17.0
21.0
29.0
51.0
WH5
9
2.4
2.4
3.3
3.3
WH10
36.5
51
21
11
15
16
WH25
28
WH50
72.5
30
29
WH100 – 300
A
B
C
D
E
F
G
H
J
K
L
M
Dt
Wt.
Max
Max
Max
24.1
41.8
41.8
Max
Max
65.2
89.7
±0.3
±0.3
Max
Max
15.4
10.4
12.4
Max
3.7
5.5
5.5
Nom* Max
Min
7.0
15
Nom
47.5
88
27.3
45.5
35
37
57.2
59
11.8
20.5
20.5
4.4
5.1
6.6
-
115
475
700
WH100
WH200
WH300
72.5 145.7
72.5 184.4
70
103.4
141.4
45.5 127.7
104
15
* WH100: ±0.25, WH200 & WH300: ±0.45
WH100
WH200 & 300
WH5 - 50
End face tracking distance = Dt
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 aluminium housing to give
optimum stability and reliability.
The resistors are legend marked with type reference,
resistance value and tolerance which will withstand all
accepted industrial cleaning fluids. Values are marked
in accordance with IEC 62
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 test data and is considered accurate at time of print.
Ó We lwyn Compone nts Limite d
Welwyn Electronics Park, Bedlington, Northumberland, NE22 7AA, England. Tel: 01670 822181 Fax: 01670 829465 Web: www.welwyn-tt.com
Aluminium Housed
Wirewound Resistors
Terminations
WH200 & 300
Material
Strength
WH5-100
M6 threaded steel terminal
Termination robustness 50N
Material
Strength
Pb-free solder dipped, copper clad steel
The terminations meet the requirements
Solderability Non-solderable
of IEC 68.2.21
Solderability The terminations meet the requirements
of IEC 115-1, clause 4.17.3.2
Performance Data
WH5 - 50
WH100 - 300
Maximum
CECC 40203-006
Requirements
Actual
Maximum
Typical
0.4
0.4
Load at commercial rating: 1000hrs at 25°C
Load at CECC rating: 1000hrs at 25°C
Dry heat: 1000hrs at 200°C
Derating from 25°C
ΔR%
ΔR%
ΔR%
1
1
1
1
1
1
2
N/A
2
0.4
Zero at 200°C, see derating graph
Short-term overload
Climatic sequence
ΔR%
ΔR%
1
1
1
1
0.2
0.4
Climatic category
Long-term damp heat
55/200/56
0.5
ΔR%
ΔR%
ΔR%
ΔR%
μV/V
ohms
1
0.25
0.25
0.2
Temperature rapid change
Resistance to solder heat
Vibration and bump
Noise (in decade of frequency)
Insulation resistance
0.25
0.25
0.25
0
0.1
0.25
0.05
WH100: 0.5
0.25
0.025
0
Not specified
1G min
Not specified
0
10G min
See graphs
Pulse and overload performance
Note: A 0.05 ohm addition is to be added to the performance of all resistors < 10 ohms.
10000
Pulse and Overload Performance
For short durations of ≤0.1s the energy graph should
be used. For longer durations the overload graph
1000
applies.
100
WH300
WH200
WH100
10
WH25-300
10
WH5&10
WH50
WH25
WH10
1
WH100-300
WH5-50
WH5
1
0.1
0.01
0.1
1
10
Overload Duration (s)
100
1000
0.1
1
10
100
1000 10000 100000
Value (ohms)
Application Notes
After soldering care should be taken to ensure that there are no flux residues on the end faces of the moulding
compound, otherwise insulation resistance will be reduced. The minimum surface tracking distances from termination
to casing are shown in the Physical Data tables as dimension Dt.
It is recommended that the resistor base should be coated with heatsink compound before mounting to obtain the
stated operating characteristics. The heatsink compound increases thermal conductivity to the heatsink.
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 test data and is considered accurate at time of print.
Ó We lwyn Compone nts Limite d
Welwyn Electronics Park, Bedlington, Northumberland, NE22 7AA, England. Tel: 01670 822181 Fax: 01670 829465 Web: www.welwyn-tt.com
Aluminium Housed
Wirewound Resistors
The standard aluminium heatsinks are defined in the table below. If smaller heatsinks are used then derating should
be applied as indicated in the graph below.
Reference heatsink dimensions
Type (CECC) Thickness (mm)
Derating for reduced heatsink dimensions
Area (cm²)
410
1000
WH5 (AA)
WH10 (BA)
WH25 (CA)
WH50 (DA)
WH50 @ 50W
WH100
1
1
1
1
1.5
3
410
544
544
930
1000
3800
5800
WH300 25°C
WH300 70°C
WH200 25°C
WH200 70°C
WH200
3
100
10
1
WH100 25°C
WH100 70°C
WH300
3
Derating for ambient temperature
WH50 25°C
DA 25°C
DA 70°C
WH25/CA 25°C
WH25/CA 70°C
WH10/BA 25°C
WH10/BA 70°C
WH5/AA 25°C
120
100
80
60
40
20
0
WH5/AA 70°C
0
100
200
1
10
100
Heatsink Surface Area (cm2)
1000
10000
Am bient Tem perature (°C)
WH200 and WH300 are supplied with a set of four M6 nuts and washers. The screw terminations can support a
maximum tightening torque of 5Nm.
Packaging
WH5-100 resistors are packed in plastic bags and boxed. WH200 & 300 are individually boxed.
Ordering Procedure
Example: WH25 at 100 ohms with a 5% tolerance:
W H 2 5 – 1 0 0 R J I
Type
Value (use IEC62 code)
Tolerance (use IEC62 code)
F
G
1%
2%
J
K
5%
10%
Packing
Bulk
I
All Sizes
Standard
The following options apply to WH5 – 50 only:
For CECC released product state on order the CECC number and style. Example: WH25-3K3JI CECC40203-006 CA
For SnPb finish instead of Pb-free replace the packing suffix with PB. Example: WH25-3K3JPB
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 test data and is considered accurate at time of print.
Ó We lwyn Compone nts Limite d
Welwyn Electronics Park, Bedlington, Northumberland, NE22 7AA, England. Tel: 01670 822181 Fax: 01670 829465 Web: www.welwyn-tt.com
相关型号：
©2020 ICPDF网 联系我们和版权申明