DDTC143ZUA-7 Discrete Semiconductor Products

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Bipolar junction transistors (BJT) are usually used to amplify the input signal while driving the connected load, and they are broadly classified by three main types: NPN, PNP and Darlington. Single, pre-biased BJT is one of their categories, featuring the bias resistant property and the good linearity of the transistor.

DDTC143ZUA-7 is a single, pre-biased NPN transistor, featuring a low saturation voltage on the collector-emitter junction compared to current silicon BJT. Its maximum current gain ranges from 171 to 237, and the average hFE is 224. The average collector-emitter voltage is 0.33V. The base-emitter voltage is typically 1.5V. The package is SOT-23, featuring flat leads for easy automatic insertion.

DDTC143ZUA-7 application fields

DDTC143ZUA-7 can be used in many kinds of devices. It is a suitable choice for applications requiring low collector-emitter saturation voltage and low base current. It is particularly appropriate for audio amplifiers, color TV sets and other equipments with audio signals, such as car audio systems. Additionally, it can be applied in power supplies, portable electronic devices, battery-driven devices, USB devices, and so on.

DDTC143ZUA-7 working principle

A BJT consists of three parts, the base, the emitter and the collector. A NPN type works as such: when a voltage is applied to the base, it attracts electrons from the emitter and at the same time, causes electrons to move from the collector to the emitter. This is known as forward biasing of the base-emitter junction. When a current flows through the base-emitter junction, it allows the collector current to flow from the collector to the emitter. This process is known as amplification.

DDTC143ZUA-7 is a NPN single, pre-biased BJT. It has a low saturation voltage on the collector-emitter junction, compared to current silicon BJT. When a voltage is applied to the base, a current passes through the base-emitter junction, which also triggers incoming signals, modulated by the voltage at the base. The devices features a maximum current gain of 171 to 237, and the average hFE is 224.

Conclusion

DDTC143ZUA-7 is a single, pre-biased NPN transistor, with better performance than current silicon BJT. It is especially suitable for audio amplifiers, color TV sets, power supplies, portable electronic devices, and battery-driven devices. The working principle is forward biasing of the base-emitter junction, which allows the collector current to flow from the collector to the emitter.

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