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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
Part No. | DS | Manufacturer | D/C | Qty | Region | Action |
---|---|---|---|---|---|---|
US1M | MCC | 2021+ | 15000 | China | Request A Quote | |
US1M | MCC | 2021+ | 10000 | Canada | Request A Quote |
Transistor > Thyristors > Bipolar Transistors > GP BJT
Part No. | DS | Manufacturer | D/C | Qty | Region | Action |
---|---|---|---|---|---|---|
ZXT1M322TA | Diodes | 2011+ | 28500 | China | Request A Quote |
Part No. Variations
- US1M
- US1M11T
- US1M13
- US1M13F
- US1M87T70
- US1MAQDIO
- US1MDF
- US1MDF13
- US1MDFQ13
- US1MDIO
- US1ME3
- US1ME35AT
- US1ME361T
- US1MEDA
- US1METP
- US1MF
- US1MFA
- US1MFDC
- US1MGRANDE
- US1MH
- US1MHE35AT
- US1MHE3AH
- US1MHE3AHIC
- US1MHE3AI
- US1MHF
- US1MLGE
- US1MM2G
- US1MM35AT
- US1MM361T
- US1MR1
- US1MR100001
- US1MR2
- US1MR2G
- US1MRZ040
- US1MSMA
- US1MTG
- US1MTGIC
- US1MTP
- US1MTR
- US1MTRSMC
- US1MW
- US1MWFHF
- US1MWTR7