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| 型號(hào)： | PWC2010-680RJI |
| 英文描述： | RESISTOR SMD 680R |
| 中文描述： | 電阻貼片680R |
| 文件頁(yè)數(shù)： | 3/6頁(yè) |
| 文件大小： | 295K |
| 代理商： | PWC2010-680RJI |
Description of Performance Tests
t
p
t
i
t
1
t
2
t
V
Rectangular Pulses
e
t
V
Exponential Pulse
0
V
Single Impulse
The single impulse graph was the result of 50 impulses of
rectangular shape applied at one minute intervals. The limit of
acceptance was a shift in resistance of less than 1% from the
initial value. The power applied was subject to the restrictions
of the maximum permissible impulse voltage graph as shown.
Continuous Load Due to
Repetitive Pulses
The continuous load graph was obtained by applying repetitive
rectangular pulses where the pulse period (tp) was adjusted so
that the average power dissipated in the resistor was equal to
its rated power at 70°C. Again the limit of acceptance was a
shift in resistance of less than 1% from the initial value.
The formula used to calculate the average power for repetitive
pulses is shown below.
For a rectangular impulse
P =
For an exponential impulse P =
Where
R
t
p
=
= nominal resistance
time of the pulse period
(1/tp = pulse frequency)
=
peak voltage of the impulse
=
average power dissipation
of continuous pulses
=
impulse time of a rectangular pulse
T
e
=
time constant of an exponential pulse
V
P
t
i
V
2
t
i
R t
p
< Pnom
V
2
t
e
R 2t
p
< Pnom
3
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PWC2010-680RJI | 制造商:TT Electronics / Welwyn 功能描述:RESISTOR 2010 680R |
| PWC2010-68KF | 制造商:TT Electronics / Welwyn 功能描述:RESISTOR 2010 1% 68K 制造商:TT Electronics / Welwyn 功能描述:RESISTOR, 2010, 1%, 68K |
| PWC2010-68KJI | 功能描述:厚膜電阻器 - SMD 0.75watt 68K ohm 5% RoHS:否 制造商:Bourns 電阻:1.5 Ohms 容差:1 % 功率額定值:25 W 電壓額定值:250 V 外殼代碼 - in: 外殼代碼 - mm: 端接類型:SMD/SMT 溫度系數(shù):100 PPM / C 系列:PWR163 工作溫度范圍:- 55 C to + 155 C 封裝:Tube |
| PWC2010-68KJI | 制造商:TT Electronics / Welwyn 功能描述:RESISTOR 2010 68K |
| PWC2010-68RF | 制造商:TT Electronics / Welwyn 功能描述:RESISTOR 2010 1% 68R 制造商:TT Electronics / Welwyn 功能描述:RESISTOR, 2010, 1%, 68R 制造商:TT Electronics / Welwyn 功能描述:RESISTOR, 2010, 1%, 68R; Product Range:WELWYN - PWC Series; Resistance:68ohm; Power Rating:750mW; Resistance Tolerance: 1%; Resistor Case Style:2010 [5025 Metric]; Resistor Element Material:Thick Film; Temperature Coefficient: ;RoHS Compliant: Yes 制造商:TT Electronics / Welwyn 功能描述:RESISTOR, 2010, 1%, 68R; Product Range:WELWYN - PWC Series Pulse Withstanding Chip Resistors; Resistance:68ohm; Power Rating:750mW; Resistance Tolerance: 1%; Resistor Case Style:2010 [5025 Metric]; Resistor Element Material:Thick ;RoHS Compliant: Yes |
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