NTE5408 thru NTE5410 Silicon Controlled Rectifier (SCR) 3 Amp Sensitive Gate Description: The NTE5408 through NTE5410 sensitive gate SCRs are designed to be driven directly with IC and MOS devices. These SCRs feature proprietary, void–free glass–passivated chips and are hermetically sealed in TO5 type packages. These 4A devices are available in voltages up to 600V and with a gate current of 200µA. These NTE SCRs are reverse–blocking triode thyristors and may be switched from off–state to conduction by a current pulse applied to the gate terminal. The NTE5408 through NTE5410 are designed for control applications in lighting, heating, cooling, and static switching relays. Absolute Maximum Ratings: Repetitive Peak Reverse Voltage (TC = +100°C), VRRM NTE5408 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200V NTE5409 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 400V NTE5410 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 600V Repetitive Peak Off–State Voltage (TC = +100°C), VDRXM NTE5408 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200V NTE5409 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 400V NTE5410 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 600V RMS On–State Current (TC = +75°C, Conduction Angle of 180°), IT(RMS) . . . . . . . . . . . . . . . . . . . 4A Peak Surge (Non–Repetitive) On–State Current (One Cycle at 50 or 60Hz), ITSM . . . . . . . . . . . 40A Peak Gate–Trigger Current (3µs Max), IGTM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1A Peak Gate–Power Dissipation (IGT ≤ IGTM for 3µs Max), PGM . . . . . . . . . . . . . . . . . . . . . . . . . . . 20W Average Gate Power Dissipation, PG(AV) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200mW Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40° to +100°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40° to +150°C Typical Thermal Resistance, Junction–to–Case, RthJC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +5°C/W Electrical Characteristics: (TC = +25°C unless otherwise specified) Parameter Symbol IRRM Peak Off–State Current IDRXM Maximum On–State Voltage VTM DC Holding Current IHOLD Test Conditions Min Typ Max Unit VRRM = Max, VDRXM = Max, TC = +100°C, ° RGK = 1kΩ Ω – – 0.75 mA – – 0.75 mA IT = 10A (Peak) – – 2.2 V RGK = 1000Ω – – 5 mA DC Gate–Trigger Current IGT VD = 6VDC, RL = 100Ω – – 200 µA DC Gate–Trigger Voltage VGT VD = 6VDC, RL = 100Ω – – 0.8 V Gate Controlled Turn–On Time tgt IG x 3GT – 1.2 – µs I2t for Fusing Reference I2t For SCR Protection – – 2.6 A2sec – 5 – V/µs Critical Rate of Applied Forward Voltage dv/dt RGK = 1kΩ, TC = +100°C (critical) .352 (8.95) Dia Max .325 (8.13) Dia Max .250 (6.35) Max .500 (12.7) Min .019 (0.5) Gate Cathode Anode 45° .031 (.793)