Allicdata Part #: | BT149B,126-ND |
Manufacturer Part#: |
BT149B,126 |
Price: | $ 0.00 |
Product Category: | Discrete Semiconductor Products |
Manufacturer: | NXP USA Inc |
Short Description: | THYRISTOR 200V 0.8A SOT54 |
More Detail: | SCR 200V 800mA Sensitive Gate Through Hole TO-92-3 |
DataSheet: | BT149B,126 Datasheet/PDF |
Quantity: | 1000 |
1 +: | 0.00000 |
Series: | -- |
Packaging: | Tape & Box (TB) |
Part Status: | Obsolete |
Voltage - Off State: | 200V |
Voltage - Gate Trigger (Vgt) (Max): | 800mV |
Current - Gate Trigger (Igt) (Max): | 200µA |
Voltage - On State (Vtm) (Max): | 1.7V |
Current - On State (It (AV)) (Max): | 500mA |
Current - On State (It (RMS)) (Max): | 800mA |
Current - Hold (Ih) (Max): | 5mA |
Current - Off State (Max): | 100µA |
Current - Non Rep. Surge 50, 60Hz (Itsm): | 8A, 9A |
SCR Type: | Sensitive Gate |
Operating Temperature: | -- |
Mounting Type: | Through Hole |
Package / Case: | TO-226-3, TO-92-3 (TO-226AA) (Formed Leads) |
Supplier Device Package: | TO-92-3 |
Base Part Number: | BT149 |
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:A thyristor is a two-terminal semiconductor device comprised of four or more layers of alternate P and N-type semiconductors. Thyristors are also known as Silicon Controlled Rectifiers (SCRs). The BT149B and the 126 are two examples of SCRs commonly used in the electronics industry.
The BT149B is a medium-power, fast-switching thyristor. It is typically used for switch mode power control, device protection, speed control, soft-start applications and battery chargers. It has a maximum blocking voltage of 600 Volts, a maximum surge current of 7 Amps, can operate between -55°C and +150°C, and is rated for continuous current operation at 4 Amps. The BT149B is a surface mount device and is available in standard, lead-free and traditional leaded packages.
The 126 is a low-power, fast-switching thyristor. It has a maximum blocking voltage of 800 Volts and a maximum surge current of 15 Amps. It is designed for high-speed switching operations and is used in lighting control, AC power controllers, small inverters and soft-start applications. The 126 is available in a variety of packages. It is moisture-proof, heat resistant and can withstand high temperatures.
The application of BT149B and 126 due to their fast-switching performance and high-temperature resistance. They are typically used in AC power control, lighting control, and various other power control applications. Furthermore, their low-power requirements and fast-switching capabilities make them ideal for high-speed switching operations, such as switching inductive load motors. In addition, they are able to provide superior control in power supply systems and they are particularly useful in DC to AC conversion systems.
The working principle of BT149B and 126 SCRs is based on the principle of minority carrier injection. In this principle, electrons are injected into a P-type material and holes are injected into an N-type material. When the majority carriers of these materials meet up and recombine, it creates a barrier between the two. This barrier acts as a switch that can be opened or closed by applying voltage to the SCR circuit. When the voltage reaches the trigger level, the barrier opens and allows current to flow. When the voltage drops below the trigger level, the barrier closes and current stops flowing.
In conclusion, the BT149B and 126 are two types of SCRs used in various applications for switch mode power control, device protection, speed control, and soft-start applications. They are designed for fast-switching performance and high-temperature operation. Furthermore, their low-power requirements and fast-switching capabilities make them ideal for switching inductive load motors. The working principle of BT149B and 126 SCRs is based on minority carrier injection, which creates a barrier between the two materials that can be opened or closed with a voltage trigger.
The specific data is subject to PDF, and the above content is for reference
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