Silicon Surge Voltage Suppressor 5SSA ..R Series Dac. No. 5SYA 1030-01 Nov.95 Features The 5SSA silicon surge voltage suppressor consists of a diffused pnp-Si-wafer mounted with pressure contact in a hermetically sealed metal-ceramic-package. 5SSA silicon surge voltage suppressors are best suited to protect power thyristors against small and medium power surges (e.g. 200 kW over 10 us). They allow the use of thyristors with lower voltage capability and much smaller snubber circuits. Applications are e.g.: Traction, HVDC transmission, generator excitation, transmitter power supply, high power motor controls. Type and Ve ordering number [Vv] 5SSA 50R0500 500 + 60 5SSA 50R0600 600 + 60 5SSA 38R0700 700 + 60 5SSA 38R0800 800 + 60 5SSA 30R0900 900 + 60 5SSA 30R1000 1000 + 60 5SSA 26R1100 1100 + 60 5SSA 26R1200 1200 + 60 5SSA 23R1300 1300 + 60 5SSA 23R1400 1400 + 60 2A 5SSA 20R1500 1500 + 60 5SSA 20R1600 1600 + 60 Dimensions in mm Weight: 0.070 kg ABB Semiconductors AGABB Semiconductors AG 5SSA ..R Series Type and Vr Thyristor Ir [A] Prav ordering number Vorm VrrMu [V] [V] 1x 10ys |1 x 100ps| 1x 1ms | 1x 10ms [W] 5SSA 50R0500 500 + 60 600 5SSA50R0600 | 600+60 | 700 500 135 33 rs 30 5SSA 38R0700 700 + 60 800 5SSA 38R0800 | 800+60| 900 380 100 25 4.5 30 5SSA 30R0900 900 + 60 1000 5SSA 30R1000 1000 + 60 1100 300 80 21 4 30 5SSA 26R1100 1100 + 60 1200 5SSA 26R1200 1200 + 60 1300 260 67 18 3.6 30 5SSA 23R1300 1300 + 60 1400 5SSA 23R1400 1400 + 60 1500 230 58 15 3.4 30 5SSA 20R1500 1500 + 60 1600 5SSA 20R1600 1600 + 60 1700 200 50 13 3 30 VR : ee _ _ Thermal resistance junction-heatsink: Ri; js = 0.6 KW. Symmetrical avalanche voltage at sin I, = 20 A, to =10 us, Tyj = 60C. P Tyj The initial virtual junction temperature is 60 C. RM Max. avalanche current for a single sine half wave pulse. RAV Admissible continuous losses at Rthca <1KW, Ta < 60C. Single side cooling Temperature coefficent of the avalanche voltage Vp:+ 0.11 % per degree C: Ve (T)= Veo [1 + 1.1 * 10 (T - 60 C)]. Vp (60 C) = Veo; Vp (25 C) = 0.93 * Vag: Vp (125 C) = 1.07 * Vro. The blocking current |p is proportional to e [TeCy20C]_ Ip (0.8 * Vp; Tj = 45 C): 50 % - Value: < 4 WA; Arithm. meanvalue: < 8 YA. Junction capacitance at zero voltage (Ty = 60C): 1100 pF. Storage temperature/max. junction temperature -40...125 C/125 C . Admissible acceleration (vibration): 10g Mounting torque: 10 Nm+ 10%. Advantages of the 5SSA ...R Surge Voltage Suppressors: Sharp avalanche-knee: small safety factor (< 1.2) for the protected thyristor required, very small leakage currents at 0.8 x Vp; that means higher operating voltages or cost reduction by using thyristors with lower blocking voltage. Immediate turn-on, no dangerous overshoot as seen e.g. with varistors, thereby clear and safe protection against overvoltages. RC-snubber can be smaller (smaller losses, cheaper), approx. 50-100 nF/100 , to damp RFI oscillations. By using 5SSA, a matching of power thyristors can in most cases be avoided. 5SSA can be heat sunk and is therefore ideal to protect against repetitive surges. There is no aging, e.g. as compared to varistors (limited number of surges, deterioration of electrical data). The temperature coefficient is the same for both 5SSA and protected thyristor. In case of a thermal overload, the 5SSA produces always a short circuit, thus still protecting the thyristor. 2 of 4 Doc. No. 5SYA 1030-01 Nov.955SSA ..R Series ABB Semiconductors AG 10 E rT 1 1 TT C4 | BSSA SORO500 4 HS \ = ESSA 50R0600 7 4 N 5SSA 38R0700 4 NY +" 5SSA 38RO800 2 NAAT A SSA 30R0800 \ WAT | SAzORIGO 10 \ 5SSA 26R1106 | Ty \ LEFT 5S8A 26R1200 | 4 AAY SSSA 23R1300 | WX -f" 6SSA 23R1400 2 2 S i SSSA 20R1500 4 Pp , , K[\ SSSA 201600 10? tp KA 5SSA 20R1500 ARK 4 to NN NK Ir ] WK, 2 N y 15 ps Tyg = 60C \\ \ 24 10' iY WAAAY q 4 AN : \Y N oO 1000 1100 1200 1300 1400 1800 1600 Vv 10199 2 4 10 2 4 102 2 4 A10 = VR Avalanche voltage Vp vs. junction temperature Ty. 600 800 1000 1200 1400 Vv 1600 Vr 5SSA 50R0500 ; 5SSA 50RO600 5SSA 38R0700 5SSA 38R0800 Val 58SA 30R0900 vt 5S8SA 30R1000 ; 5SSA 26R1100 5SSA 26R1200 i 5SSA 23R1300 5SSA 23R1400 5SSA 20R1500 5SSA 20R1600 Z-FAT-TITATAMIONDYS Avalanche current fp in function of the avalanche voltage Product of max. admissible square wave current lari Vp for single sine wave pulses of base width tp < 20 us. and avalanche voltage Vp in function of pulse width t,; Ty = 60 C. parameter is the repetition frequency. Case tempera- ture T, < 60C. Doc. No. 5SYA 1030-01 Nov.95 3 of 4SSSA 50R0600 600 2 1 1 2 7 2 4 2 4 ps 104 5SSA 38R0800 900 In(A) = 800 1 4 ps 10* 5SSA 2 1 1 4 101 4 2 4 ys 104 Va | 1200 Vv SSSA 26R1200 RiA) = 1 4 10? 2 4 8 10 1 2 4s 104 Avalanche voltage Vp vs. base width tp for a single sine half wave current with peak Ip as parameter. Tyj = 60 C. A ED ED FADED v(t} ~ i(t) ABB Semiconductors AG Fabrikstrasse 3 CH-5600 Lenzburg, Switzerland Telephone +41 62 888 6300 Fax +41 62 888 6305 Sales Fax +41 62 888 6306 Doc. No. 5SYA 1030-01 Nov.95