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參數(shù)資料
| 型號： | R0809LS10D |
| 廠商： | WESTCODE SEMICONDUCTORS LTD |
| 元件分類： | 晶閘管 |
| 英文描述： | 1691 A, 1000 V, SCR |
| 封裝： | 101A336, 3 PIN |
| 文件頁數(shù)： | 8/12頁 |
| 文件大?。?/td> | 259K |
| 代理商： | R0809LS10D |
WESTCODE
Positive development in power electronics
R0809LS10x
Data Sheet. Type R0809LS10x Issue 1
Page 5 of 12
March, 2001
The total dissipation is now given by:
f
E
W
(original)
(TOT)
+
=
12.2 Determination without Measurement
In circumstances where it is not possible to measure voltage and current conditions, or for design
purposes, the additional losses E in joules may be estimated as follows.
Let E be the value of energy per reverse cycle in joules (curves in Figure 9).
Let f be the operating frequency in Hz
()
(
)
()
f
R
E
T
th
original
SINK
new
SINK
=
Where TSINK (new) is the required maximum heat sink temperature and
TSINK (original) is the heat sink temperature given with the frequency ratings.
A suitable R-C snubber network is connected across the thyristor to restrict the transient reverse voltage
to a peak value (Vrm) of 67% of the maximum grade. If a different grade is being used or Vrm is other than
67% of Grade, the reverse loss may be approximated by a pro rata adjustment of the maximum value
obtained from the curves.
NOTE 1- Reverse Recovery Loss by Measurement
This thyristor has a low reverse recovered charge and peak reverse recovery current. When measuring
the charge care must be taken to ensure that:
(a) a.c. coupled devices such as current transformers are not affected by prior passage of high
amplitude forward current.
(b) A suitable, polarised, clipping circuit must be connected to the input of the measuring oscilloscope
to avoid overloading the internal amplifiers by the relatively high amplitude forward current signal
(c) Measurement of reverse recovery waveform should be carried out with an appropriate critically
damped snubber, connected across diode anode to cathode. The formula used for the calculation
of this snubber is shown below:
dt
di
S
r
C
V
R
= 4
2
Where: Vr
= Commutating source voltage
CS = Snubber capacitance
R
= Snubber resistance
13.0 Gate Drive
The recommended pulse gate drive is 30V, 15
with a short-circuit current rise time of not more than
0.5s. This gate drive must be applied when using the full di/dt capability of the device.
The duration of pulse may need to be configured with respect to the application but should be no shorter
than 20s, otherwise an increase in pulse current could be needed to supply the resulting increase in
charge to trigger.
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| R0822 | 功能描述:射頻適配器 - 系列之間 RCA PLUG UHF JACK RoHS:否 制造商:Amphenol Connex 側(cè)1射頻系列:SMA 側(cè)1性別:Jack (Female) 側(cè)1極性:Normal 側(cè)1體類型:Bulkhead 側(cè)2射頻系列:TNC 側(cè)2性別:Jack (Female) 側(cè)2極性:Normal 側(cè)2體類型:Bulkhead 阻抗:50 Ohms 適配器類型:Straight 頻率范圍:DC to 11 GHz 觸點(diǎn)電鍍:Gold 外殼電鍍:Gold 主體材料:Brass |
| R0828 | 制造商:PENN ELCOM 功能描述:RACK STRIP AND RAIL, 38.91MM, STEEL; Length:2m; Width:38.91mm |
| R0828/02 | 制造商:Penn Elcom 功能描述:2RU Pre-Cut Rack Rail 制造商:PENN ELCOM 功能描述:PRE CUT RACK RAIL 2RU |
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