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DO-15X Axial Lead
DO-214AA Surface Mount
TO-202AB Type 1 TO-92 Type 70 Do not use mounting tab or center lead, electrically connected
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 current is interrupted or drops below the minimum holding current of the device. Teccor offers the complete voltage range (95-330) over three different 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)
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
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.
Features
* * * AC circuit oriented Glass-passivated junctions High surge current capability
Teccor Electronics (972) 580-7777
9-1
SIDAC
Electrical Specifications
Part No. IT(RMS) VDRM VBO
Breakover Voltage 50/60Hz Sine Wave (1)
IDRM
IBO
Type
On-State Repetitive RMS Current Peak TJ125C Off-State 50/60Hz Voltage Sine Wave (7) (8)
Repetitive Breakover Current Peak 50/60Hz Off-State Current Sine Wave 50/60Hz Sine Wave V=VDRM
DO-15X TO-92 TO-202AB DO-214AA G Package E Package F Package S Package See "Package Dimensions" section for variations. K1050E70 K1100E70 K1200E70 K1300E70 K1400E70 K1500E70 K2000E70 K2200E70 K2400E70 K2500E70 K1050G K1100G K1200G K1300G K1400G K1500G K2000G K2200G K2400G K2500G K2000F1 K2200F1 K2400F1 K2401F1 K2500F1 K3000F1 K2500S K1050S K1100S K1200S K1300S K1400S K1500S K2000S K2200S K2400S
Amps MAX 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 (10) 1.0 1.0
Volts MIN 90 90 90 90 90 90 180 180 190 190 190 190
Volts MIN 95 104 110 120 130 140 190 205 220 220 240 270 MAX 113 118 125 138 146 170 215 230 250 250 280 330
Amps MAX 5 5 5 5 5 5 5 5 5 5 5 5
Amps MAX 10 10 10 10 10 10 10 10 10 10 10 10
General Notes
* * * All measurements are made at 60Hz with a resistive load at an ambient temperature of +25C unless otherwise specified. Storage temperature range (TS) is -65C to +150C. The case (TC) or lead (TL) temperature is measured as shown on the dimensional outline drawings. See "Package Dimensions" section of this catalog. Junction temperature range (TJ) is -40C to +125C. Lead solder temperature is a maximum of +230C for 10 seconds maximum; 1/16" (1.59mm) from case.
Electrical Specification Notes
(1) (2) (3) (4) (5) (6) (7) See Figure 9.6 for VBO change vs junction temperature. See Figure 9.7 for IBO vs junction temperature. See Figure 9.2 for IH vs case temperature. See Figure 9.14 for test circuit. See Figure 9.1 for more than one full cycle rating. RJA for TO-202 Type 23 and Type 41 is 70C/watt. TC 90C for TO-92 Sidac and TC 105C for TO-202 Sidacs. TL 100C for DO-15X and TL 90C for DO-214AA. (8) See Figure 9.15 for clarification of Sidac operation. (9) For best Sidac operation, the load impedance should be near or less than switching resistance. (10) Teccor's new, improved series of sidacs is designed to ensure goodcommutationathigherswitchingfrequencies asrequiredinignitor circuits for high intensity discharge (HID) lighting. A typical circuit for a metal halide lamp ignitor is shown in the schematic, Figure 9.3. With proper component selection this circuit will produce three pulses for ignition of Osram lamp types such as HQI-T70W, HQIT150W, and HQI-T250W which require a minimum of three pulses at 4kV magnitude and >1s duration each at a minimum repetition rate of 3.3kHz.
* *
SIDAC
9-2
Teccor Electronics (972) 580-7777
SIDAC
IH
Dynamic Holding Current 50/60Hz Sine Wave R = 100 (3) (4)
VTM
Peak On-State Voltage IT = 1 Amp
ITSM
Peak One Cycle Surge Current 50/60Hz Sine Wave (Non-Repetitive) (5)
RS
Switching Resistance
R (V -V ) BO S = ------------------------------(I - I ) S BO
dVq/dt
dv/dt
di/dt
Critical Rate-of-Rise of On-State Current
S
Critical Critical Rate-of-Rise Rate-of-Rise of Turn-off of Off-State Voltage at Voltage at 8kHz Rated VDRM TJ 100C
mAmps TYP 60 60 60 60 60 60 60 60 60 60 60 60 MAX 150 150 150 150 150 150 150 150 150 150 150 150 E 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5
Volts Max Package G 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 3.0 3.0 3.0 3.0 3.0 3.0 F S 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5
50/60Hz Sine Wave (9) Amps 60Hz 20 20 20 20 20 20 20 20 20 20 20 20 50Hz 16.7 16.7 16.7 16.7 16.7 16.7 16.7 16.7 16.7 16.7 16.7 16.7 k MIN 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 2.0 0.1 0.1 Volts/Sec MIN 20 20 20 20 20 20 20 20 20 42 20 20 Volts/Sec MIN 1500 1500 1500 1500 1500 1500 1500 1500 1500 1500 1500 1500 Amps/Sec TYP 150 150 150 150 150 150 150 150 150 150 150 150
100
Peak Surge (Non-Repetitive) On-State Current [I(TSM)] - Amps
SUPPLY FREQUENCY: 60 Hz Sinusoidal LOAD: Resistive RMS ON-STATE CURRENT: IT RMS Maximum Rated Value at Specified Junction Temperature
40
20 10 8.0 6.0 4.0
BLOCKING CAPABILITY MAY BE LOST DURING AND IMMEDIATELY FOLLOWING SURGE CURRENT INTERVAL OVERLOAD MAY NOT BE REPEATED UNTIL JUNCTION TEMPERATURE HAS RETURNED TO STEADY-STATE RATED VALUE.
2.0 1.0 1.0
10
100
1000
Surge Current Duration - Full Cycles
V-I Characteristics
Figure 9.1
Peak Surge Current vs Surge Current Duration
THERMAL RESISTANCE (STEADY STATE) RJC [RJA] C/W (TYPICAL)
E 35 [95]
G 18 [75]
F (6) 7 [45]
S 30 [85]
Teccor Electronics (972) 580-7777
9-3
SIDAC
Electrical Specifications
Maximum Allowable Ambient Temperature (TA) - C
140 CURRENT WAVEFORM: Sinusoidal - 60 Hz LOAD: Resistive or Inductive FREE AIR RATING
2.0
120
IH IH(TC=25 C)
1.5
100
1.0
80
Ratio of
60
.5
TO
40
-9
TO
2
-2
an
02
TO TY PE 23
-2
02
d
TY
DO
PE
-2
14
&
1
41
0
-40
-15
+25
+65
+105
+125
25 20 0 0.2 0.4 0.6 0.8 1.0
Case Temperature (TC) - C
RMS On-State Current [IT(RMS)] - Amps
Figure 9.2
Normalized DC Holding Current vs Case/Lead Temperature
Figure 9.5
Maximum Allowable Ambient Temperature vs On-State Current
+4
H.V. STEP-UP TRANSFORMER BALLAST
Percentage of VBO Change - %
+2 0 -2 -4 -6 -8 -10 -12 -40 -20 0
0.1 - 0.15 F 220V/240V 50/60Hz
K2401F1 METAL HALIDE LAMP
5 - 6H
0.22 - 0.33 F
5.6K - 8.2K 5W
+25
+20
+40
+60
+80
+100
+120 +140
Typical Metal Halide Ignitor Circuit
Junction Temperature (TJ) - C
Figure 9.3
Typical Metal Halide Ignitor Circuit
Figure 9.6
Normalized V BO Change vs Junction Temperature
Repetitive Peak On-State Current (ITRM) - Amps
600 400 200 100 80 60 40 20 10 8 6 4 2 1 0.8 0.6
2 x 10-3
f=1
di/dt Limit Line
No n-R
ITRM VBO Firing Current Waveform
ep
Re
ea
on
f=1
f=1 00 Hz
Fr
0H
eq
z
ue
nc
yf
=5
Hz
TJ=125C Max
Repetitive Peak Breakover Current (IBO) Multiplier
pe
ted
to l/f
titi
9 8 7 6 5 4 3 2
V=VBO
kH
z
f=5
f=1
f=20
kH
Hz
z
0k
1 20 30 40 50 60 70 80 90 100 110 120 130
kHz
Junction Temperature (TJ) - C
4
68
1 x 10-2
2
4
68
1 x 10-1
2
4 6 81
Pulse base width (to) - mSec.
Figure 9.4 Repetitive Peak On-State Current (I TRM) vs Pulse Width at Various Frequencies Figure 9.7 Normalized Repetitive Peak Breakover Current vs Junction Temperature
SIDAC
9-4
Teccor Electronics (972) 580-7777
SIDAC
9 TL =25C 8
4.7 F
TO-92, DO-214AA & DO-15X "E", "S" and "G" Packages
Positive or Negative Instantaneous On-State Current (iT) - Amps
7 6 5 4 3
10 F
+
100V
+
4.7 k
-
50V
1/2W
+ 24 VAC 60 Hz
TO-202 "F" Package
K1200E SIDAC 200V
4.7 F 100V
1.2 F
2 1 0 0 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4 3.6
H.V. IGNITOR
Positive or Negative Instantaneous On-State Voltage (vT) - Volts
Figure 9.8
On-State Current vs On-State Voltage (Typical)
Figure 9.11
Ignitor Circuit (Low Voltage Input)
2.2 2.0 Average On-State Power Dissipation [PD(AV)] - Watts 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0
CURRENT WAVEFORM: Sinusoidal LOAD: Resistive or Inductive CONDUCTION ANGLE: See Figure 9.15
BALLAST
BALLAST
TO-202 "F" Package
SIDAC 3.3 K
0.47F 400V LAMP
SIDAC 7.5 K
0.22F LAMP
120 VAC 60 Hz 16 mH
"E", "S" & "G" Packages TO-92, DO-214AA & DO-15X
220 VAC 60 Hz
0.2
0.4
0.6
0.8
1.0
120 VAC
220 VAC
RMS On-State Current [IT(RMS)] - Amps
Figure 9.9
Power Dissipation (Typical) vs On-State Current
Figure 9.12 Typical High Pressure Sodium Lamp Firing Circuit
100
SCR
SIDAC
2w
-
10 F 250V
+
XENON LAMP
20 M
100-250 VAC 60 Hz
100-250 VAC 60 Hz
+ 10 F - 450V
120VAC 60Hz
K2200F1 4KV SIDAC 200400V TRIGGER TRANSFORMER 20:1 .01F 400V
Figure 9.10 Comparison of Sidac vs SCR
Figure 9.13 Xenon Lamp Flashing Circuit
Teccor Electronics (972) 580-7777
9-5
SIDAC
Electrical Specifications
PUSH TO TEST S1
SWITCH TO TEST IN EACH DIRECTION
VBO
VBO VBO
IPK
TRACE STOPS
100-250 VAC 60 Hz
100 1%
DEVICE UNDER TEST
100-250 VAC 60 Hz
I
H
LOAD IH 120-145 CONDUCTION ANGLE IH
IH
S1 SCOPE SCOPE INDICATIONS
LOAD CURRENT
Figure 9.14 Dynamic Holding Current Test Circuit for Sidacs
Figure 9.15 Basic Sidac Circuit
(a) Circuit VBO R SIDAC VDC(IN) VB0 VC t RL IL VC (b) Waveforms
C
IL
Rmax Rmin
VIN - VBO I BO V -V IN TM IH (MIN)
t
Figure 9.16 Relaxation oscillator Using a Sidac
VCE MONITOR (See Note B) RBB1 = 150 100 mH TIP-47
INPUT VOLTAGE 0V 5V COLLECTOR CURRENT 0.63 A 0
tw 3 ms (See Note A) tw 100 mS
INPUT
2N6127 (or equivalent)
50 50
RBB2 = 100 + VBB2 =0
+ VCC = 20 V IC MONITOR
SIDAC VBO
COLLECTOR VOLTAGE 10 V VCE(sat)
RS = 0.1
VBB1 =10 V
-
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.
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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