Q2004D31V
| Model | Q2004D31V |
| Description | Thyristor Product Catalog |
| PDF file | Total 224 pages (File size: 3M) |
| Chip Manufacturer | TECCOR |
Sidac
Data Sheets
(a) Circuit
VBO
R
SIDAC
V
DC(IN)
≥
V
B0
V
C
t
R
L
IL
VC
(b) Waveforms
C
IL
Rmax
≤
R
min
≥
VIN - VBO
IBO
VIN - VTM
IH (MIN)
t
Figure E9.15 Relaxation Oscillator Using a Sidac
V
CE
Monitor
(See Note B)
R
BB1
=
150
Ω
TIP-47
100 mH
Input
Voltage
0V
5V
Collector
Current
0.63 A
0
t
w
≈
3 ms
(See Note A)
t
w
100 ms
Input
50
Ω
2N6127
(or equivalent)
50
Ω
R
BB2
=
100
Ω
+ V
BB2
=0
+
V
CC
= 20 V
-
R
S
= 0.1
Ω
I
C
Monitor
Sidac V
BO
Collector
Voltage
10 V
V
CE(sat)
V
BB1
=10 V
-
Test Circuit
Voltage and Current Waveforms
Note A: Input pulse width is increased until I
CM
= 0.63 A.
Note B: Sidac (or Diac or series of Diacs) chosen so that V
BO
is just below V
CEO
rating of transistor to be protected.
The Sidac (or Diac) eliminates a reverse breakdown of the transistor in inductive switching circuits where otherwise the
transistor could be destroyed.
Figure E9.16 Sidac Added to Protect Transistor for Typical Transistor Inductive Load Switching Requirements
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E9 - 6
©2002 Teccor Electronics
Thyristor Product Catalog
