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參數(shù)資料
| 型號： | W21-680RJI |
| 英文描述： | WIDERSTAND DRAHT EMAILL 680R 100V 2.5W |
| 中文描述： | WIDERSTAND線材EMAILL 680R 100V的2.5W功率 |
| 文件頁數(shù)： | 2/2頁 |
| 文件大小： | 106K |
| 代理商： | W21-680RJI |
A
f
1
f
2
6
6
10
±
0.5
f
1
– f
2
≤
1.4 mm
Performance Data
CECC 40201-002
Requirements
ACTUAL PERFORMANCE
Maximum
5
5
2
0.03
see derating curve
1.0
0.5
Typical
3.5
3.5
1
0.02
Load at commercial rating: 1000 hrs at 25°c
Load at CECC rating: 1000 hours at 25°c
Dry heat: 1000 hours at 200°c
Shelf life: 12 months at room temperature
Derating
Short term overload
Climatic
Climatic category
Long term damp heat
Temperature rapid change
Resistance to solder heat
Vibration and bump
Noise (in decade of frequency)
Robustness
Insulation resistance
Voltage Proof
Pulse handling data
R%
R%
R%
R%
5
5
not specified
R%
R%
R%
R%
R%
R%
R%
μv/v
R%
Ohms
volts
1
5
0.2
0.2
55/200/56
5
1
1
1
not specified
1
not specified
not specified
0.05
0.5
0.25
0.25
zero
0.4
0.02
0.2
0.03
0.05
zero
0.05
>.1G ohm
500 min
>.1G ohm
500 min
available by request
APPLICATION NOTES
The termination should not be bent closer than
1.6mm from the body, and the recommended
minimum bend radius is 1.2mm. The terminations
When cold, vitreous enamel has excellent insulation
resistance. In common with all insulants
the specific resistance of the enamel decreases with
increase in temperature. Therefore, resistors
operated at near maximum temperature cannot be
classed as insulated and should not be used in
contact with any conducting material. Care must be
taken when determining clearance distance between
Vitreous Enamelled
Wirewound Resistors
W20 SERIES
STANDARD QUANTITIES PER PACKAGE
Type
Ammo Pack
Reel
Small Box
W21
1000
1000
N/A
W215
750
750
N/A
W22
500
700
N/A
W23
N/A
N/A
50
W24
N/A
N/A
25
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
25 70 200 315
Ambient temperature
°
C
116
100
54
0
Derating Curve
%
Type
W21
W215
W22
A
63±2
73±2
73±2
PACKAGING
For W21 and W215 the standard method of
packaging is taped in Ammo Packs. For W22 the
standard method of packaging is taped and reeled.
Alternatives available by special request are detailed
in the table below.
W23’s and W24’s are available only as loose packed
in boxes. W series resistors can bbe supplied
preformed. Contact factory for details.
the resistor body and the printed circuit board or
other components to ensure these are not over
heated. Resistance is measured 6mm from body.
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