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K2500F1 Schematic ( PDF Datasheet ) - Teccor

Teilenummer K2500F1
Beschreibung silicon bilateral voltage triggered switch
Hersteller Teccor
Logo Teccor Logo 




Gesamt 6 Seiten
K2500F1 Datasheet, Funktion
DO-15X
Axial Lead
DO-214AA
Surface Mount
TO-202AB
Type 1
Do not use mounting tab
or center lead,
electrically connected
TO-92
Type 70
SIDAC
(95 - 330 Volts)
9
General Description
The Sidac is a silicon bilateral voltage triggered switch with
greater power-handling capabilities than standard diacs. Upon
application of a voltage exceeding the Sidac breakover voltage
point, the Sidac switches on through a negative resistance region
to a low on-state voltage. Conduction will continue until the cur-
rent is interrupted or drops below the minimum holding current of
the device.
Teccor offers the complete voltage range (95-330) over three dif-
ferent packages:
• TO-92 (95-280 volts)
• Axial lead DO-15X (95-280 volts)
• Surface Mount DO-214AA (95-280 volts)
• TO-202AB (190-330 volts)
Teccor’s Sidacs feature glass passivated junctions to ensure a
rugged and dependable device capable of withstanding harsh
environments.
Variations of devices covered in this data sheet are available for
custom design applications. Please consult the factory for more
information.
Applications
• High voltage lamp ignitors
• Natural gas ignitors
• Gas oil ignitors
• High voltage power supplies
• Xenon ignitors
• Over voltage protector
• Pulse generators
• Fluorescent lighting ignitors
• HID lighting ignitors
Features
• AC circuit oriented
• Glass-passivated junctions
• High surge current capability
Teccor Electronics
(972) 580-7777
9-1
SIDAC






K2500F1 Datasheet, Funktion
Electrical Specifications
100-250
VAC
60 Hz
PUSH
TO
TEST
S1
S1
SWITCH TO TEST IN
EACH DIRECTION
IPK
100
1%
DEVICE
UNDER
TEST
IH
TRACE STOPS
SCOPE
SCOPE INDICATIONS
100-250
VAC
60 Hz
VBO
IH
VBO
VBO
LOAD
˚120-145
CONDUCTION
ANGLE
IH
IH
LOAD CURRENT
Figure 9.14 Dynamic Holding Current Test Circuit for Sidacs
Figure 9.15 Basic Sidac Circuit
(a) Circuit
VDC(IN) VB0
R
SIDAC
VC
VBO
VC
C IL RL
IL
Rmax
VIN - VBO
IBO
Rmin
VIN - VTM
IH (MIN)
Figure 9.16 Relaxation oscillator Using a Sidac
(b) Waveforms
t
t
INPUT
(See Note B)
2N6127
RBB1 =
(or equivalent) 150
50
50
RBB2 =
100
VBB1 =10 V
+ VBB2 =0
-
TEST CIRCUIT
VCE MONITOR
INPUT
VOLTAGE
0V
TIP-47
VCC = 20 V
RS = 0.1
100 mH
5V
COLLECTOR
CURRENT
0.63 A
0
+ IC MONITOR SIDAC VBO
-
COLLECTOR
VOLTAGE
10 V
VCE(sat)
tw 3 ms
(See Note A)
tw
100 mS
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.
Figure 9.17 Sidac Added to Protect Transistor for Typical Transistor Inductive Load Switching Requirements
SIDAC
9-6 Teccor Electronics
(972) 580-7777

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