When a transistor is in operation it experiences electric and thermal loads. The life of a transistor will be short if such loads exceed the maximum tolerances which may break the transistor in a worst case scenario. To avoid this, it is highly recommended to check if there are any issues with the driving the transistor during the design stage.
3) what is the working voltage? 4) is the transistor used as amplifier or as a switch? You'll need to apply 12V to the base of the PNP transistor to switch off (VEB = 0). Leaving PNP's behind, looking at the NPN's that you have availabe, only the BC547B (Ic = 100mA) couldn't handle the 480mA current that your siren needs. From the remaining 3 transistors, I'd choose the one that can handle the most current, just to be on the safe side.
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Even if the spike is a millisecond or less! Choose a transistor of the same polarity: The first major selection criterion is whether the transistor is PNP or NPN. Select a replacement transistor of the same material: Most transistors are either silicon or germanium. As bias voltages and other features are different it is necessary to select a replacement transistor with the same material. Transistor Selection Guide NEW NEW NEW NEW NEW NEW Silicon Bipolar Transistors NF o and G a are specified at a low noise bias point, while P 1 dB, G 1 dB, and |S 21E| 2 are specified at bias points which optimize these parameters. Low Noise Transistors (Typical Specifications @ 25°C Case Temperature) Part Frequency V CE NF o G a P 1 dB G 1 dB Also the parametric selection guide may not provide pinout details.) Power:- What is the maximum dissipation?
Best bjt transistors - Buying Guide · 300 Pcs Transistors kit,10 Value BC327 BC337 BC517 BC547 BC548 BC549 BC550 BC556 BC557 BC558 NPN PNP Power
12 Pages. Automotive Solutions Guide. 8 Pages. 2 Selection Guide PX10727EJ02V0PF This document covers “Silicon Microwave Transistors”, “Silicon Microwave Monolithic ICs” and “Microwave GaAs Devices”.
Performance Guides Transistor Selection. RF/microwave transistors offer many different performance capabilities by type of device, with some better for lower noise …
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Small-signal Transistors Selection guide LEADED DEVICES NPN GENERAL PURPOSE LOW-POWER TRANSISTORS TYPE NUMBER PACKAGE VCEO max. (V) IC max. (mA) Ptot max.
Caution GaAs Products This product uses gallium arsenide (GaAs).
If the max Ic value is exceeded, the transistor will probably "burn out". There are thousands of different types of transistors available, and each transistor has different parameters. Transistors are more complicated than resistors and capacitors because you can choose a resistor or capacitor according to required resistance or capacitance value but while choosing a transistor, you have to look for many transistor parameters.
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Anti-Saturation Transistors DPAK IPAK TO-126 TO-220 Packages Surface Mount (DPAK, D2PAK) Through-Hole (TO-92, IPAK, TO-126, TO-220) Through-Hole (TO-220F, TO-3P, TO-3PF, TO-264) www.fairchildsemi.com Bipolar Power Transistor Selection Guide January 2003 Table of Contents Product page General Purpose Transistors Horizontal Deflection Output Transistors
When choosing a transistor it is important to make sure that the gain is high enough for the required use and that the maximum current which it can handle is sufficient to drive the output device. e.g. BFY 51 gain > 40 , max Ic = 1 amp. If the max Ic value is exceeded, the transistor will probably "burn out".
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Transistors are small, versatile semiconductor devices designed to switch or amplify electronic signals and power. Almost all electronic devices today contain one or more transistors. Some transistors are individually packaged, but many more are embedded in integrated circuits.
Selection guide for THAT Corporation's line of analog professional audio integrated circuits (ICs) including voltage controlled amplifiers, (VCAs), RMS-level detectors, Analog Engine dynamics processors, balanced line receivers, balanced line drivers, audio preamplifiers, digitally controlled microphone preamplifiers and transistor arrays. External Gate Resistor Selection Guide (Rev. A) Author: Texas Instruments, Incorporated [SLLA385,A ] Subject: Tech Notes or Application Briefs Keywords: SLLA385,SLLA385A Created Date: 4/1/2020 3:33:36 PM Buy RF FET Transistors. Newark offers fast quotes, same day shipping, fast delivery, wide inventory, datasheets & technical support. RF power transistor products designed to meet the demanding requirements of transmitter amplifier systems operating in airborne, ground-based, missile, ship-borne, and space environments. GaN RF Power Transistors Features and Benefits Consult Fairchild Semiconductor's entire Selection guide of Transistors & diodes catalogue on DirectIndustry. Page: 1/81 Online transistor selection tool eases power management design.