C795CB C795CA C795CP C795LT C795LN -100V G322L LS2037 DC550 SF1154

THYRISTOR PRESSPA 100mm THYRISTOR PRESSPA K 3200V / 3800A Type C795 thyristor is suitable for phase control applications such as

C795 THYRISTOR PRESSPA 100mm THYRISTOR PRESSPA K 3200V / 3800A Type C795 thyristor is suitable for phase control applications such as high voltage valves used on static Var compensators and thyristor controlled series compensation. It is especially optimized to handle frequently applied heavy surge currents as needed for pulse power circuits.The silicon junction is manufactured by the proven multi-diffusion process and is suppled in an industry accepted disc-type package, suitable for mounting directly to heat dissipators using commercially available mechanical clamping hardware. REPETITIVE PEAK REVERSE AND OFF-STATE BLOCKING VOLTAGE TJ= 0 t 1 5oC o 2 MODEL VD R M VR R M (ot) vls (ot) vls ON-STATE CHARACTERISTIC initial Tj = 125oC On-State Voltage, Vtm (V) 10 9 8 Process Maximum Current Pulses (8ms) 7 125 C Tcase = 25 & 125 degC 25 C 6 5 C795CB C795CB C795CA C795CA C795CP C795CP C795LT C795LT C795LN C795LN 3200 3100 3000 2900 2800 3200 3100 3000 2900 2800 4 J 3 2 C L 1 0 1000 10000 100000 On-State Current, Itm (A) C L 92J: .01 Zthj-case (degC/watt) 2 0° ±5 ° A Ø B Ø D B Ø A = 5.65 in (143.5 mm) B =3.92 in (99.4 mm) D=1.45 in (36.8 mm) .001 Rthj-c=.005 degC/W add .002 for case to sink .0001 0.001 0.01 0.1 1 Power On-time (seconds) 10 o1a:t305tau ELECTRICAL CREEPAGE / STRIKE 16/10i . . n 40.6 / 25.4 mm CLAMPING FORCE (ag) rne 17000-19000 lb. 175 GREAT VALLEY PKWY. MALVERN, PA 19355 USA 8/22/95 C795 / T305 LIMITING CHARACTERISTICS AND RATINGS Repetitive peak offstate & reverse volts VD R M VR R M Peak Recovery Current Relationship with Commutating di/dt T J=0 t 1 5oC o 2 p o u t 3200 V Repetitive peak offI RM D state & reverse current I R M R T J=0 t 1 5oC o 2 300 300 ma Average on-state current I T(AV) T case= 70oC 3800 A Peak half-cycle non-rep surge current I SM T 8.3 ms 2.0 ms T J=100oC 60 100 kA On-state voltage VT M I =4000A T t =8.3ms P T J=125oC .0 15 V rtcl ae f ie Ciia rt o rs of on-state current d/t id rp e T J=125oC 60 Hz 100 A/us rtcl ae f ie Ciia rt o rs o ofsaevlae f f-tt otg vd d/t T J=125oC V D =. 80% VD R M 500 V/us Recovery current I M R T J=105oC 2A u m x /s a. mn i. 85 55 2000 Peak Recovery Current, Irm, (A) 1000 105 degC 25 degC 100 10 1 10 Commutating di/dt, (A/us) 100 A di R dt Turn-on delay t d Vd=.5VD R M 3 s u Turn-off time T off 5A/us,-100V -100V 20V/us to 2000V 400 s u Thermal resistance R thJC 05 .0 / cw Externally applied clamping force F 17000 -19000 b. ls t IRM(REC) di (REC) dt Gate Characteristics and Gate Supply Requirements Instantaneous Voltage (V) 50 dynamic @ 105 C · THYRISTOR GATE IMPEDANCE Enhanced by fast rising gate voltage,increasing anode bias and junction temperature.It is at a minimum for dc current, zero anode bias and low temperature. 40 30 · GATE SUPPLY At least 30V/10 ohm is necessary to support the di/dt rating and life expectancy. The short circuit current risetime should be nominally 0.5us and the duration longer than the expected delay time for all magnitudes of anode bias. Practically 10-30us is recommended followed by a back porch of 750ma if needed to sustain conduction. optional load lines 20 · MINIMUM ACCEPTABLE GATE CURRENT The intersection of the load line and gate impedance characteristic indicates the minimum value of actual current needed during the delay time interval to support di/dt.A different load line meeting this criterion may be used. 10 static (dc) @ 25 C 0 0 0.5 1 1.5 2 2.5 3 3.5 Instantaneous Current (A) 4 4.5 5 · MAXIMUM GATE RATINGS Peak gate power,Pgm(100us) = 300 W Average gate power,Pg(av) = 50W Peak gate current,Igfm = 25 A Peak reverse voltage,Vgrm = 25 V 92J: sh2 8/22/95 C795 / T305 FULL CYCLE AVERAGE POWER DISSIPATION Sine Wave - includes spread loss as function of conduction angle Peak Cnuto Age odcin nl Current IT 180o 150o 120o 9 o 0 Full Cycle Average Power () A (at) wts 1000 303 258 210 161 1500 514 437 355 270 2000 741 629 512 388 2500 981 833 677 513 3000 1234 1047 851 645 3500 1498 1271 1032 782 4000 1774 1505 1222 926 4500 2062 1749 1420 1075 5000 2361 2003 1626 1231 Average Power, Pavg (W) 2500 conduction angle (degrees) 180 2000 150 conduction angle 120 1500 90 1000 60 30 500 6o 0 3o 0 110 184 263 347 436 528 625 725 830 66 109 155 203 255 309 365 424 485 0 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 Peak Current, It (kA) 92J: FULL CYCLE AVERAGE POWER DISSIPATION 120-deg Conduction -includes spread loss as function of overlap angle , U Average Power , Pavg (W) 3000 "U" 2750 2 20 2500 40 2250 2000 120 degrees U U 1750 120 deg + U 1500 1250 1000 Pa ek Cret urn IT () A 10 00 10 50 20 00 20 50 30 00 30 50 40 00 40 50 50 00 Overlap Angle u=2o u=20o u=40o Full Cycle Average Power (at) wts 351 342 332 587 573 560 841 823 805 1100 1087 1065 1395 1366 1339 1694 1659 1626 2009 1967 1927 2338 2289 2241 2683 2625 2569 750 500 250 0 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 Peak Current ,It (kA) 92j: PG:6.094 sh3 9/1/92 C795 / T305 Non-Repetitive Surge Current 2 and I t for Fusing Itsm 100 2 It 100 100 78 60 56 2 AS E6 kA 15 15.7 12.17 10 10 10 10 1 Sine Pulse Duration, tp (milliseconds) 92J: MOUNTING PRESSPAKS TO HEAT DISSIPATORS The following instruction is essential for maintaining low, stable thermal and electrical resistances associated with the PRESSPAK to heat dissipator surfaces. 1. INSPECTION OF MATING SURFACES Check each mating surface for nicks,scratches and surface finish.The PRESSPAK surface has a total indicator reading TIR < .0005 inch and surface finish 32 prior to factory electrical test in pressure fixtures. The dissipator surface should be equally as good.The TIR of a fully tested PRESSPAK may run higher but not exceed 0.002 inch not including some minor nicks and scratches associated with the test fixtures. Any bow created by clamp system at assembly must keep flatness within 0.002 inch. 2. SURFACE DEOXIDATION AND CLEANING Although plated surfaces are recommended for aluminum and copper heat dissipators, bare surfaces may be used if careful attention to cleaning and treating is assured. Plated surfaces and PRESSPAKS should be lightly sanded with 600 grit paper, then oil or compound applied as recommended. Unplated aluminum surfaces should be vigorously abraided with a fine wire brush or 3M "Scotchbrite" coated with Alcoa EJC #2 compound. The EJC # 2 should be removed and the recommended compound applied. 3. FINAL SURFACE TREATMENT Apply silicone oil or a very thin layer of grease or compound as indicated below. Rotate the PRESSPAK to properly distribute the applied agent. . bare copper - use G322L G322L or LS2037 LS2037 . bare aluminum - use EJC #2 or G322L G322L . tin plated copper or aluminum - preferably reapply DC550 DC550 or SF1154 SF1154 - alternatively use G623 or G322L G322L . nickel plated aluminum - use DC550 DC550,G623 or G322L G322L . silver plating - not recommended Recommended silicone oils are SF1154 SF1154 or DC550 DC550 (200 centistoke) 4. MOUNTING Assemble with specified mounting force applied through a self-leveling swivel connection. The diameter of the swivel should be preferably equal but not smaller than the poleface diameter of the PRESSPAK. Center holes on the top and bottom of the PRESSPAK are for locating. NOTES: Silicone oil DC550 DC550 (200 centistoke) is a product of DOW CORNING; clear silicone grease G623, yellow G322L G322L and SF1154 SF1154(200 centistoke) GE Silicones Waterford NY; EJC# 2 from ALCOA and black LS2037 LS2037 from ARCO , 7301 Bessemer Ave. Cleveland OH. Limit maximum joint temperature to: - 95 C using EJC #2 - 150 C using SF1154 SF1154,DC550 DC550 or G322L G322L 5. APPLIED MOUNTING FORCE The selection of an appropriate commercially available spring clamping hardware* should consider eatablishing and maintaining the specified mounting force over the operating temperature range and operating life of the PRESSPAK.Thus essential ratings such as thermal resitance ,di/dt,surge current and thermal cycling will not be impaired. Specified forces for this product are as follows: 17000-19000 lbs. 75.6 - 84.5 kN 7725 - 9500 kg * Consult factory for recommendations or more detailed instructions. 175 GREAT VALLEY PKWY. , MALVERN PA 19355 USA Date: 8/22/95