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Thyristor TA271-320


VDRM/VRRM [V min]: 600
VDRM/VRRM [V max]: 1200
ITAV [A]: 320
Tс: 97
VTM (Tc=25°С) [V]: 1.65
ITM (Tc=25°С) [A]: 1005
VT(TO)/Tjmax [V]: 1.012
rT/Tjmax [mΩ]: 0.717
Tjmax [°С]: 140
Rthjc [°С/W]: 0.0850
Package: T.SB1
Thread/ Thread length/The size of the key: -24-1.5/19/SW41
Design: stud
Type: avalanche
Recommended heatsinks: О181О281

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  • Description

    TA271-320 is an avalanche thyristor in stud design. It has a repetitive peak off-state and reverse voltage VDRM/VRRM 600-1200 V. Mean on-state current ITAV 320А. The thyristor has an industry-standard ceramic housing making it easy to integrate the device into existing equipment. The maximal junction temperature Tjmax is 140 °C.

    A unique feature of avalanche thyristors is that the sharp rise of the reverse current after exceeding a certain threshold (VBR) is caused not by breakthrough at the surface of the silicon chip but avalanche effect in the entire space charge area of p-n junction. The main application of avalanche thyristors is proptection of power circuits from overvoltage. Such thyristors are used in energy converters, power circuits operating at industry standard or increased frequency. The thyristors have a sealed housing isolating the functional part and the semiconductor element from mechanical impacts and environment.

    This thyristor has a stud design with a flexible power lead and pressure contacts. Stud thyristors are notable for their ability to be used on moving parts.

    Power thyristors from Proton-Electrotex have the following features:

    ∙ low static and dynamic losses;
    ∙ high values of VDRM, VRRM;
    ∙ extensive experience of using the devices in various industries;
    ∙ range of voltages from 100 to 6500 V and amperages from 125 to 5000 A;
    ∙ high resistance to thermal and electric cycling;
    ∙ natural or forced air cooling.

    Proton-Electrotex is able to select the optimal power thyristor for given operation modes at the customer's request. It is also possible to ship ready-to-use power semiconductors in assembly with heatsinks.

    To buy the TA271-320 thyristor, request a quotation or ask for a technical advice, please contact our sales department by phone +7 4862 440455 or email

  • Applications

    Such thyristors are used in energy converters, power circuits operating at industry standard or increased frequency.



Address: 19 Leskova Str., Orel, 302040, Russia, room 27, off. 14

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