DO-15X Axial Lead DO-214AA Surface Mount , TO-202AB " Type 4 LS TO-92 Type 70 Do not use mounting tab or center lead, electrically connected 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 (95-330 voits) Surface Mount DO-214AA (95-330 volts) TO-202AB (190-330 volts) Teccors 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. IND IN SIDAC (95 - 330 Volts) * 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, Inc. (972) 580-7777Electrical Specifications Type DO-15X G Package DO-214AA S Package On-State | Repetitive Breakover Voltage RMSCurrent Peak 50/60Hz Sine Wave Peak Current Tys110C | Off-State (1) Off-State | 50/60Hz 50/60Hz Voltage Current | Sine Wave Sine Wave 50/60Hz (7) (8) Sine Wave V=Vorm pAmps General Notes All measurements are made at 60Hz with a resistive load at an ambient temperature of +25C unless otherwise specified. Storage temperature range (Tg) is -65C to +150C. The case (T) or lead (T,,) temperature is measured as shown on the dimensional outline drawings. See Package Dimensions sec- tion of this catalog. Junction temperature range (Ty) is -40C to +110C. 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) (8) (9) (10) See Figure 9.6 for Vgq change vs junction temperature. See Figure 9.7 for Igo vs junction temperature. See Figure 9.2 for I, vs case temperature. See Figure 9.14 for test circuit. See Figure 9.1 for more than one full cycle rating. Rega for TO-202 Type 23 and Type 41 is 70C/watt. Te < 80C for TO-92 Sidac and Tc < 100C for TO-202 Sidacs. T_ < 85C for DO-15X and T, < 75C for DO-214AA. See Figure 9.15 for clarification of Sidac operation. For best Sidac operation, the load impedance should be near or less than switching resistance. Teccor's new, improved series of sidacs is designed to ensure good commutation at higher switching frequencies as required in ignitor 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 pro- duce three pulses for ignition of Osram lamp types such as HQI- T70W, HQI-T150W, and HQI-T250W which require a minimum of three pulses at 4kV magnitude and >1s duration each at a mini- mum repetition rate of 3.3kHz. SIDAC 9-2 Teccor Electronics, Inc. (972) 580-7777Dynamic Peak One Switching Critical Critical Critical Holding Current On-State Cycle Surge Resistance Rate-of-Rise | Rate-of-Rise | Rate-of-Rise 50/60Hz Voltage Current of Turn-off | of Off-State | of On-State Sine Wave y= 1 Amp 50/60Hz Sine Wave YBo7 Ys) Voltage at | Voltage at Current R= 1002 (Non-Repetitive) Rs = Wg=Teol 8kHz | Rated Vprm (3) (4) 5) Ty < 100C 50/60Hz Sine Wave Volts (9) Max Amps Package 60Hz 50Hz Volts/uSec | Volts/uSec | Amps/uSec +! A 100 T TCC or ++ SUPPLY FREQUENCY: 60 Hz Sinusoidal H-| by e[- LOAD: Resisti rr Q RMS ON-STATE CURRENT: ly RMS Maximum Rated 777 \ se Value at Specified Junction Temperature Lt | Ip} Z< 40 : oa a. 2a > z E20 5= leo 2 5 10 oS lor pe o m5 80 -V > +V 50 6.0 { a] * T 2 2 t+ BLOCKING CAPABILITY MA BE Lost) $2 4 |_ DURING AND IMMEDIATELY ow * | FOLLOWING SURGE CURRENT ted ag INTERVAL ne 3 | OVERLOAD MAY NOT BE AEPEATED UNTIL JUNCTION TEMPERATURE al 2.0 [| HAS RETURNED TO STEADY-STATE Pe. R eos} RATED VALUE. he. Ss el sao} 10 | tT ll 1.0 10 100 1000 Surge Current Duration - Full Cycles V-| Characteristics Figure 9.1 Peak Surge Current vs Surge Current Duration Teccor Electronics, Inc. 9-3 SIDAC (972) 580-7777Electrical Specifications 140 r 1 1: 20 oe a CURRENT WAVEFORM: Sinusoidal - 60 Hz , Te aa y i LOAD: Resistive or Inductive ' : = 420 FREE AIR RATING o : yo 5 1 i 3 ~ wd 8 N 2 : 1 & 100 NX WN a i N Zi | pot - N oO 1 i c & ot 5 4 Aw a E = I < Soo SS > g NX ING = ' QR = 1 cS 60 fs ee g = bt frome fe to 40 z Pl 1 x Qa 40 15 +25 +65 ~105!"? +125 = 3 Case Temperature (Tc) - C 0 02 04 06 08 10 RMS On-State Current (yams)! - Amps Figure 9.2 Normalized DC Holding Current vs Case/Lead Temperature Figure 9.5 Maximum Allowable Ambient Temperature vs On-State Current +4 HV, ss 42 STEP-UP o TRANSFORMER 2s BALLAST = 5 QO -2 = 0.1-0.15 pF == K2401F1 BS 4 @o Da 220V/240V & 50/60Hz 5 - 6H NT IOE c 6 LAMP 5 a 8 0.22 - 0.33 pF 5.6K - 8.2K 10 5wW O | -12 40 -20 0 +20 +40 +60 +80 +100 +120 Typical Metal Hatide Ignitor Circuit Junction Temperature Ty) C Figure 9.3 Typical Metal Halide ignitor Circuit Figure 9.6 Normalized Vag Change vs Junction Temperature 2 di/dt Limit Line 2 600 as < 400 ItRM _ VBo Firing z 200 Current . 2 - 4100 Waveform g is z = 80 La & af 5 5 60 $= 5 40 aS 3 x 3 OO gO o 20 T y= 110C a7 2 = 2 g Le 10 5 : =e c 8 aE O 6 30 sg 4 x 1 & 20 30 40 50 60 70 80 90 100 110 120 2 g Junction Temperature (T ) - C = 1 @ 0.8 3 0.6 4 c 2x10-3 1x 10-2 x 10-1 Pulse base width (tg) - mSec. Figure 9.4 Repetitive Peak On-State Current (Iya) vs Pulse Width at Figure 9.7. Normalized Repetitive Peak Breakover Current vs Junction Various Frequencies Temperature SIDAC Teccor Electronics, Inc. (972) 580-7777SIDAC Positive or Negative Instantaneous On-State Current (iz) - Amps TO-92, DO-214AA & DO-15 "E, S* and G" Packages | 0 08 10 12 14 TO-202 "F* Package 1618 20 22 24 26 28 30 32 34 36 Positive or Negative Instantaneous On-State Voltage (v7) - Volts 24 VAC 60 Hz = lL 4.7 uF 100V Uehe 4.7kQ / 4 ew K1200E SIDAC 1.2uF 200V HV. IGNITOR Figure 9.8 On-State Current vs On-State Voltage (Typical) Figure 9.11 Ignitor Circuit (Low Voltage Input) 22 |- CURRENT WAVEFORM: Sinusoidal we fe 20 C CONDUCTION ANGLE: See Figure asf BALLAST BALLAST S 7 2 18 f 9 1.6 TO-202 "F* Packa 4+ 2 acl ef pu (14 A 35 Wf oe 12 S : LAMP ZZ 49 7 Z 9a " 7 f 5 og /- fo , 3 : f- pong 220 VAC 3 0.6 / ae 60 Hz < | ee = ew o4 we 7092, Dootaan e p0-18x 0.2 ga Q 0.2 0.4 0.6 0.8 1.0 120 VAC 220 VAC RMS On-State Current {ltRMs)! - Amps Figure 9.9 Power Dissipation (Typical) vs On-State Current Figure 9.12 Typical High Pressure Sodium Lamp Firing Circuit 1002 10 pF XENON LAMP SCR SIDAG typ t > 2w 250V 0 Ma. + K2200F 1 100-250 10 pF 4KV VAC 4 = 60 Hz . 450V | 120VAC SIDAC| o1pF 60Hz | 400V 200- > 400v | TRIGGER TRANSFORMER 20:1 Figure 9.10 Comparison of Sidac vs SCR Figure 9.13 Xenon Lamp Flashing Circuit Teccor Electronics, Inc. 9-5 SIDAC (972) 580-7777Electrical Specifications SWITCH TO TEST IN TEST VB0 -L 81 yy EACH DIRECTION DEVICE UNDER TEST 100-250 _-_ , 129-145! Nf Benen VAC { 60 Hz VW } H | LOAD CONDUCTION SCOPE INDICATIONS ANGLE LOAD CURRENT Figure 9.14 Dynamic Holding Current Test Circuit for Sidacs Figure 9.15 Basic Sidac Circuit (a) Circuit (b) Waveforms Veo _| Vo Vociiny 2 Yao t RL ; L Vig V \ VO, Pima S ~~ 82 . Rinin > Vin Ym TH (MIN} Figure 9.16 Relaxation oscillator Using a Sidac INPUT + =3me VOLTAGE (Se Note A) ov tw 5V 100 mH COLLECTOR = MQ} 100m3 | CURRENT 1 063A -+-5-----~ TA 0 \ | | | + SIDAC Veo - i a | | | | \ (9) Vgg MONITOR (See Note B) \ 2N6127 Regi = (or equivalent) 1500 = = | Vog =20V = ic MONITOR COLLECTOR VOLTAGE 10V Voe(sat) ~ TEST CIRCUIT VOLTAGE AND CURRENT WAVEFORMS NOTE A: Input pulse width is increased until Icy = 0.63A. NOTE B: Sidac (or Diac or series of Diacs) chosen so that Vgo 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 Teccor Electronics, inc. SIDAC 9-6 (972) 580-7777