SDB2200E70 Suntac Electronic, SDB2200E70 Datasheet - Page 6

• Manufacturer Part Number: SDB2200E70
• Description: Silicon Bilateral Voltage Triggered Switch
• Manufacturer: Suntac Electronic

Sidac
Figure E9.15 Relaxation Oscillator Using a Sidac
Figure E9.16 Sidac Added to Protect Transistor for Typical Transistor Inductive Load Switching Requirements
Input
Note A: Input pulse width is increased until I
Note B: Sidac (or Diac or series of Diacs) chosen so that V
The Sidac (or Diac) eliminates a reverse breakdown of the transistor in inductive switching circuits where otherwise the
transistor could be destroyed.
50 Ω
50 Ω
(or equivalent)
V
2N6127
BB1
V DC(IN) ≥ V B0
=10 V
(See Note B)
(a) Circuit
R
+
150 Ω
-
BB1
R max ≤
V
R
R
100 Ω
Test Circuit
BB2
min ≥
BB2
=
=0
=
V C
C
R
V IN - V TM
V IN - V BO
I H (MIN)
I BO
SIDAC
I L
CM
V
R
TIP-47
V
CC
S
CE
= 0.63 A.
= 0.1 Ω
= 20 V
Monitor
R L
V BO
+
-
V C
I L
100 mH
BO
is just below V
I
C
Monitor
(b) Waveforms
Voltage
CEO
Input
Collector
Collector
Current
Voltage
Sidac V
V
rating of transistor to be protected.
CE(sat)
0.63 A
10 V
5 V
0 V
BO
0
Voltage and Current Waveforms
(See Note A)
t
w
≈ 3 ms
t
w
100 ms
t
t
Data Sheets
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