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Thyristors
A thyristor is a solid-state semiconductor device with four layers of alternating N and P-type material. They act exclusively as bistable switches, conducting when their gate receives a current trigger, and continue to conduct while they are forward biased (that is, while the voltage across the device is not reversed). A three-lead thyristor is designed to control the larger current of its two leads by combining that current with the smaller current or voltage of its other lead - known as its control lead. In contrast, a two-lead thyristor is designed to 'switch on' if the potential difference between its leads is sufficiently large - a value representing its breakdown voltage. Some sources define silicon-controlled rectifiers and thyristors as synonymous. Other sources define thyristors as a larger set of devices with at least four layers of alternating N and P-type material. The first thyristor devices were released commercially in 1956. Because thyristors can control a relatively large amount of power and voltage with a small device, they find wide application in control of electric power, ranging from light dimmers and electric motor speed control to high-voltage direct current power transmission. Thyristors may be used in power-switching circuits, relay-replacement circuits, inverter circuits, oscillator circuits, level-detector circuits, chopper circuits, light-dimming circuits, low-cost timer circuits, logic circuits, speed-control circuits, phase-control circuits, etc. Originally thyristors relied only on current reversal to turn them off, making them difficult to apply for direct current; newer device types can be turned on and off through the control gate signal. A thyristor is not a proportional device like a transistor. In other words, a thyristor can only be fully on or off, while a transistor can lie in between on and off states. This makes a thyristor unsuitable as an analog amplifier, but useful as a switch.
Transistor > Thyristors > Rectifiers > Bridge Rectifier
Part No. | DS | Manufacturer | D/C | Qty | Region | Action |
---|---|---|---|---|---|---|
W04G | Vishay | - | 45 | U.S.A. | Request A Quote |
Part No. Variations
- BUF01900AIDRCT
- BUF01900AIPWR
- BUF01900AIPWRG4
- BUF01900AIPWRIC
- BUF01AJ
- BUF01BJ
- BUF01BZ
- BUF01FJ
- BUF03
- BUF03AJ
- BUF03AJ883
- BUF03BJ
- BUF03BJ883
- BUF03BJ883C
- BUF03EJ
- BUF03FJ
- BUF04
- BUF04701AIDGSR
- BUF04701AIDGSRG4
- BUF04701AIPW
- BUF04701AIPWR
- BUF04701AIPWRG4
- BUF04G
- BUF04GP
- BUF04GPZ
- BUF04GS
- BUF04GSZ
- BUF04S
- BUF05703PW
- BUF05703PWG4
- BUF05703PWR
- BUF05703PWRG4
- BUF05704AIPWP
- BUF05704AIPWPG4
- BUF05704AIPWPR
- BUF06703PW
- BUF06703PWR
- BUF06703PWRG4
- BUF07702PWP
- BUF07703PWP
- BUF07703PWPRG4
- BUF07704AIPWP
- BUF07704AIPWPR
- BUF07704AIPWPRG4
- BUF08630
- BUF08630EVM
- BUF08630RGWR
- BUF08630RGWT
- BUF08821
- BUF08821AIPWPR
- BUF08821AIPWPRG4
- BUF08821AIPWR
- BUF08821BIPWPR
- BUF08822
- BUF08822AIPWR
- BUF08832
- BUF08832AIPWPR
- BUF08832AIPWR