توضیحات
Thyristors T123-320 – power low-frequency tablet thyristors for general purpose. Convert and regulate the DC and AC current up to 410 amperes frequency up to 500 Hz in circuits with voltage 400V – 1600V . Type of thyristor housing T123-320 – PT21-1 : contact surface diameter – Ø19 mm, overall dimensions – Ø42×14 mm, weight – 0.070 kg. Frequently requested thyristor ratings : T123-320-8 , T123-320-10 , T123-320-11 , T123-320-12 , T123-320-14 , T123-320-16
Thyristors are manufactured for operation in temperate, cold (UHL) or tropical (T) climates; placement category – 2. The polarity (pinout) of thyristors is determined by the icon on the case. They are used in power supply circuits of various power plants, in semiconductor power converters. To remove heat, thyristors are assembled with coolers using a threaded connection. To ensure reliable thermal and electrical contact of the thyristor with the cooler, the compression force F m must be observed during assembly .
Compliance with the compression force is determined by the deflection of the cross member Also, for better heat dissipation during assembly, KPT-8 heat-conducting paste can be used. Price, detailed characteristics, decoding of marking, polarity, dimensions, used coolers are indicated below. The warranty of the thyristors supplied by our company is 2 years from the date of purchase, which is supported by the relevant quality documents
Detailed characteristics of thyristors T123-320
Thyristor characteristics T123-320 Repetitive impulse voltage in the closed state; repetitive surge reverse voltage U DRM / U RRM 400-1600 V Maximum Allowable Average On-State Current (Case Temperature) I T (AV) / (T C ) 320 A (85ºC) 410 A (70ºC) Maximum permissible RMS on-state current I TRMS 640 A On-state shock current I TSM 5.0 kA Maximum Allowable Junction Temperature T jmax 125ºC Impulse on-state voltage / impulse on-state current U TM / I TM 1.65 / 1005 V / A Threshold voltage of the thyristor in the open state U T (TO) 1.04V Dynamic resistance in open state r T 0.64 mΩ Repetitive impulse current in the closed state
repetitive pulse reverse current I DRM / I RRM 20 mA Critical rate of rise of voltage in the closed state (dU D / dt) cr 500-1600 V / μs Unlocking DC control current I GT 250 mA Unlocking constant voltage control U GT 2.5V Critical rate of rise of current in the open state (di T / dt) cr 200 A / μs Shutdown time t q 160 μs Protective indicator – the value of the integral of the square of the shock non-repetitive current in the open state of the thyristor during the flow i 2 t 125 kA 2 s Thermal resistance junction – housing R th (jc) 0.08 ºC / W Compression force F m 6 kN Weight W 0.070 kg Recommended coolers O123
Decoding of marking of thyristors T123-320 UHL2: T 123 – 320 – sixteen 4 3 UHL2 T – Low-frequency thyristor . 123 – Design, series . 320 – Average on-state current I T (AV) . sixteen – Voltage class U RRM / 100 (rated voltage – 1600 V) . 4 – Critical rate of rise of off-state voltage (dU D / dt) cr : Alphanumeric marking P2 K2 E2 A2 T1 Digital marking 4 five 6 7 8 Value, V / μs 200 320 500 1000 1600 3 – Switch-off time group t q : Alphanumeric marking T2 Digital marking 3 Value, μs 160 UHL2 – Climatic modification and category of placement: UHL2 – for moderate and cold climates
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