DB105A Datasheet, PDF (7/7 Pages) Jinan Jing Heng Electronics Co., Ltd. – Bilateral Voltage triggered Swit h Breakover Voltage:95-330Volts c

R
SEMICONDUCTOR
Electrical Specifications
FIG.15 Relaxation Oscillator Using a SIDAC
(a) Circuit
(b) Waveforms
VBO
R
VC
SIDAC
VDC(IN) VBO
VC
t
IL
C
IL
RL
t
Rmax
VIN-VBO
IBO
Rmin
VIN-VTM
IH(MIN)
FIG.16 SIDAC Added To Protect Transistor For Typical Transistor Inductive Load Switching Requirements
INPUT
(See Note B)
2N6127
(or equivalent) RBB1=150W
50W
50W
RBB2=100W
+
VBB1=10V
-
VBB2=0
VCE MONITOR
INPUT
VOLTAGE
0V
100mH
TIP-47
+
VCC=20V
-
RS=0.1W
IC MONITOR
5V
COLLECTOR
CURRENT
0.63A
0
SIDAC VBO
COLLECTOR
VOLTAGE
10V
TW=3ms
(See Note A)
TW
100mS
VCE(sat)
TEST CIRCUIT
VOLTAGE AND CURRENT WAVEFORMS
NOTE A: Input pulse width is increased until ICM=0.63A.
NOTE B: Sidac (or Diac or series of diacs) chosen so that VBO is just below VCEO 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.
JINAN JINGHENG ELECTRONICS CO., LTD.
5-7
HTTP://WWW.JINGHENGGROUP.COM