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It is also worth noting that the temperature coefficient of a 4.7 V Zener diode is close to that of the emitter-base junction of a silicon transistor at around −2 mV/°C, so in a simple regulating circuit where the 4.7 V diode sets the voltage at the base of an NPN transistor (i.e. their coefficients are acting in parallel), the emitter will ...
BY-series silicon rectifier diodes (e.g., BY127 1250V, 1A rectifier diode) BZ-series silicon Zener diodes (e.g., BZY88C4V7 4.7V Zener diode) Other common numbering/coding systems (generally manufacturer-driven) include: GD-series germanium diodes (e.g., GD9) – this is a very old coding system
Examples of Pro Electron type designators are: AD162 – Germanium power transistor for audio frequency use; BY133 – Silicon rectifier BZY88C5V1 – Silicon 5.1 volt Zener diode
Clarence Melvin Zener (December 1, 1905 – July 2, 1993) was the American physicist who in 1934 [1] was the first to describe the property concerning the breakdown of electrical insulators. These findings were later exploited by Bell Labs in the development of the Zener diode , which was duly named after him. [ 2 ]
A family of diode logic and diode–transistor logic integrated circuits was developed by Texas Instruments for the D-37C Minuteman II Guidance Computer in 1962, but these devices were not available to the public. A variant of DTL called "high-threshold logic" incorporated Zener diodes to create a large offset between logic 1 and logic 0 ...
MELF: Metal electrode leadless face (usually for resistors and diodes) SOD: Small-outline diode. SOT: Small-outline transistor (also SOT-23, SOT-223, SOT-323). TO-XX: wide range of small pin count packages often used for discrete parts like transistors or diodes. TO-3: Panel-mount with leads; TO-5: Metal can package with radial leads
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