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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.
Discrete
Transistor > Thyristors > FET Transistors > MOSFET
Part No. | Manufacturer | D/C | Qty | Region | Action | |
---|---|---|---|---|---|---|
FDD3N50NZ | Fairchild | 2019+ | 200000 | China | Contact Vendor |
Part No. Variations
- FDPF035N06B
- FDPF035N06BES
- FDPF041N06BL1
- FDPF045N10A
- FDPF085N10A
- FDPF10N50CT
- FDPF10N50FT
- FDPF10N50UT
- FDPF10N60N
- FDPF10N60NZ
- FDPF10N60ZUT
- FDPF12N50
- FDPF12N50N
- FDPF12N50NZ
- FDPF12N50T
- FDPF12N50UT
- FDPF12N60
- FDPF12N60NZ
- FDPF12N60NZFSC
- FDPF13N50FT
- FDPF13N50NZ
- FDPF14N30
- FDPF15N60
- FDPF15N65
- FDPF16N50
- FDPF16N50T
- FDPF16N50TRDTU
- FDPF16N50UT
- FDPF17N60NT
- FDPF18N20
- FDPF18N20FT
- FDPF18N20FTG
- FDPF18N50
- FDPF18N50C
- FDPF18N50T
- FDPF190N15A
- FDPF20N50
- FDPF20N50C
- FDPF20N50FT
- FDPF20N50T
- FDPF20N60FT
- FDPF21005R
- FDPF2710T
- FDPF2D3N10C
- FDPF320N06L
- FDPF33N25
- FDPF33N25T
- FDPF3860T
- FDPF390N15A
- FDPF39N20
- FDPF39N20TLDTU
- FDPF3N50NZ
- FDPF44N25
- FDPF44N25T
- FDPF44N25TRDTU
- FDPF4N60NZ
- FDPF50N33BTJDTU
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- FDPF51N25
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- FDPF52N20T
- FDPF55N06
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- FDPF680N10T
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- FDPF770N15A
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- FDPF8N50MOS
- FDPF8N50NZ
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- FDPF8N50NZU
- FDPF8N60ZUT
- FDPF9N50NZ