Thyristors

Thyristor is a controllable semiconductor device, which from the blocking state goes into the conduction state after giving a short control pulse to the thyristors gate.

DACPOL offers following type of thyristors:

    standard thyristors

    fast...

Thyristor is a controllable semiconductor device, which from the blocking state goes into the conduction...

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picture_as_pdf Standard thyristors KUBARA LAMINA S.A. Standard thyristors SEE IT -- On Order -- -- -- -- -- -- -- -- -- --
picture_as_pdf Power semiconductors - thyristors DYNEX POWER Tyristors Dynex Power Semiconductors SEE IT -- On Order -- -- -- -- -- -- -- -- -- --
-- Tyrystor grzanie indukcyjne -- Tyrystor. Induction heating SEE IT -- On Order -- -- -- -- -- -- -- -- -- --
-- Thyristors ABB Abb thyrystors SEE IT -- On Order -- -- -- -- -- -- -- -- -- --
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picture_as_pdf Fast thyristors POWEREX Fast thyristors SEE IT -- On Order -- -- -- -- -- -- -- -- -- --
picture_as_pdf Standard thyristors in tablet casing POWEREX Standard thyristors in tablet casing SEE IT -- On Order -- -- -- -- -- -- -- -- -- --
picture_as_pdf Capsule (disc) Thyristors SEMIKRON Capsule (disc) Thyristors SEE IT -- On Order -- -- -- -- -- -- -- -- -- --
picture_as_pdf Stud (screw-fit) Thyristors SEMIKRON Stud (screw-fit) Thyristors SEE IT -- On Order -- -- -- -- -- -- -- -- -- --
-- Fast Turn-Off Thyristors TECHSEM Quick thyristors SEE IT -- On Order -- -- -- -- -- -- -- -- -- --
picture_as_pdf ESTEL thyristor cases ESTEL ESTEL thyristor cases SEE IT -- On Order -- -- -- -- -- -- -- -- -- --
picture_as_pdf Standard thyristors Vishay Standard thyristors SEE IT -- On Order -- -- -- -- -- -- -- -- -- --
picture_as_pdf Fast thyristors Vishay Fast thyristors SEE IT -- On Order -- -- -- -- -- -- -- -- -- --
picture_as_pdf Standard thyristors Infineon Standard thyristors SEE IT -- On Order -- -- -- -- -- -- -- -- -- --
picture_as_pdf Asymmetric fast thyristors Infineon Asymmetric fast thyristors SEE IT -- On Order -- -- -- -- -- -- -- -- -- --
picture_as_pdf Standard thyristors ESTEL Standard thyristors SEE IT -- On Order -- -- -- -- -- -- -- -- -- --
picture_as_pdf Fast thyristors ESTEL Fast thyristors SEE IT -- On Order -- -- -- -- -- -- -- -- -- --
picture_as_pdf DCR4720A34 Tyrystor PCT DYNEX POWER DCR4720A34 Tyrystor PCT SEE IT DCR4720A34 On Order -- 3400 V 4720 A -- -- -- -- -- -- --
picture_as_pdf DCR4880M42 Tyrystor PCT DYNEX POWER DCR4880M42 Tyrystor PCT SEE IT DCR4880M42 On Order -- 4200 V 4880 A -- -- -- -- -- -- --
picture_as_pdf DCR490J65 Tyrystor PCT DYNEX POWER DCR490J65 Tyrystor PCT SEE IT DCR490J65 On Order -- 6500 V 490 A -- -- -- -- -- -- --
picture_as_pdf DCR4910W28 Tyrystor PCT DYNEX POWER DCR4910W28 Tyrystor PCT SEE IT DCR4910W28 On Order -- 2800 V 4910 A -- -- -- -- -- -- --
picture_as_pdf DCR5110M34 Tyrystor PCT DYNEX POWER DCR5110M34 Tyrystor PCT SEE IT DCR5110M34 On Order -- 3400 V 5110 A -- -- -- -- -- -- --
picture_as_pdf DCR5240H52 Tyrystor PCT DYNEX POWER DCR5240H52 Tyrystor PCT SEE IT DCR5240H52 On Order -- 5200 V 5240 A -- -- -- -- -- -- --
picture_as_pdf DCR5320A28 Tyrystor PCT DYNEX POWER DCR5320A28 Tyrystor PCT SEE IT DCR5320A28 On Order -- 2800 V 5320 A -- -- -- -- -- -- --
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Thyristor is a controllable semiconductor device, which from the blocking state goes into the conduction state after giving a short control pulse to the thyristors gate.

DACPOL offers following type of thyristors:

    standard thyristors

    fast thyristors

    asymmetric thyristors

Standard thyristors are suitable for the construction of converters operating at the frequency of 50 Hz power networks. They can be used for the construction of controlled rectifiers and power regulators as well as soft-starters.

Fast Thyristors

Fast thyristors, also called impulse thyristors, are characterized by a short switching time, high resistance to steepness of conduction current rise and short time of switching off.

Thyristors are used in current inverters and voltage inverters, as well as in DC drive converters and induction heating.

Asymmetric Thyristors

Asymmetric thyristors are characterized by low backward and comparable voltage, with other types of thyristors, blocking voltage. They are used primarily in traction converters of drive systems.

Thyristors are offered in two types of housing: screw-fit and capsule shaped of various sizes. They are mounted on heat sinks adapted to the losses generated in the SCR during electric conduction. When installing thyristors, apply a thin layer of thermally conductive paste to their casing, which improves heat transfer properties to the heat sink.

Thyristors in a screw-fit casing should be screwed to the radiator so that their terminals adhere to the whole surface. Pulse thyristors are cooled by radiators adjacent to the pellet. The appropriate pressure of the radiators to the pellet is provided by a special construction buckle equipped with a pointer to control the clamping force.

Thyristors –Protection

Thyristors require protection against the effects of short circuits and switching overvoltages. Only quick fuses specially designed to protect diodes and thyristors can be used for short circuit protection. To protect the thyristors against overvoltages, a RC muffler, varistors and special semiconductor elements switched between the gate and the anode, e.g. BOD type, are used.