ZTX694BSTZ

Series:	--
Packaging:	Tape & Box (TB)
Part Status:	Active
Transistor Type:	NPN
Current - Collector (Ic) (Max):	500mA
Voltage - Collector Emitter Breakdown (Max):	120V
Vce Saturation (Max) @ Ib, Ic:	500mV @ 5mA, 400mA
Current - Collector Cutoff (Max):	100nA (ICBO)
DC Current Gain (hFE) (Min) @ Ic, Vce:	400 @ 200mA, 2V
Power - Max:	1W
Frequency - Transition:	130MHz
Operating Temperature:	-55°C ~ 200°C (TJ)
Mounting Type:	Through Hole
Package / Case:	E-Line-3, Formed Leads
Supplier Device Package:	E-Line (TO-92 compatible)
Base Part Number:	ZTX694B

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Introduction

The ZTX694BSTZ is a single-channel, 500kHz frequency, 100mA bipolar junction transistor (BJT) designed for the reliable operation in the audioband. It is an active component of many base and collector layers in modern electronics circuits and is highly efficient. This transistors is mainly used in automotive and audio applications. This article will discuss the application fields and working principle of the ZTX694BSTZ.

Application Fields

The ZTX694BSTZ is mainly used in automotive and audio circuits. This transistor offers high reliability and is suitable for automotive HVAC (Heating, Ventilation, and Air Conditioning) applications. It features high current gain and low-noise characteristics and is used for audio signal switching and amplification. This transistors is also ideal for use in high-end vacuum tube amplifiers due to its extended frequency response and high power handling.

Working Principle

The ZTX694BSTZ is a bipolar junction transistor which operates by utilizing electrical charge carriers recombining in three layers or ‘Junctions’. The three terminals of the transistor consist of the base (B), collector (C) and emitter (E). The base terminal is used to provide a weak current which flows into the base junction, producing a more powerful current output from the collector junction. This resulting current is then output to the emitter terminal. When the base current is applied, the majority of charge carriers will flow through the collector junction, which amplifies the voltage. However, some of the charge carriers will join together in the base layer, forming positive ions, thus depleting the number of charge carriers in the base junction. At the same time, some of the charge carriers near the collector junction move towards the emitter junction, resulting in an increase of charge carriers there. In order to turn off the transistor, the base current is removed. This causes charge carriers to recombine again in the base junction, resulting in the transistor being turned off. The ZTX694BSTZ is designed with a high current gain, which helps to minimize noise, improve digital switching and audio quality.

Conclusion

In conclusion, the ZTX694BSTZ is a highly efficient single-channel, 500kHz frequency, 100mA bipolar junction transistor (BJT) designed for the reliable operation in the audioband. It is mainly used in automotive and audio applications due to its high reliability, low-noise characteristics and extended frequency response. The transistors operates by utilizing electrical charge carriers recombining in three layers or ‘Junctions’, with the base current determining the amplitude of current and voltage output from the collector junction. The ZTX694BSTZ is an ideal solution for automotive and audio applications.

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