However, its voltage drop that is, the voltage dropped across it will be its zener voltage in this case, 5v. Axial lead solderable per milstd202, method 208 guaranteed. There is a controlled breakdown which does not damage the diode when a reverse current above the zener voltage passes through a zener diode. The 1n4148 and 1n4448 are highspeed switching diodes fabricated in planar technology, and encapsulated in hermetically sealed leaded. Electronic manufacturer, part no, datasheet, electronics description. Zener diode 4148 datasheet, cross reference, circuit and application notes in pdf format. Features mechanical data maximum ratings diodes incorporated. A zener diode is a type of diode that permits current not only in the forward direction like a normal diode, but also in the reverse direction if the voltage is larger than the breakdown voltage known as zener knee voltage or zener voltage. So that is all from the tutorial introduction to 1n4148.
Transys electronics limited transys electronics lim. This provided the fastest relay release possible while still allowing the flyback voltage to be clipped by the zener at whatever voltage is needed to ensure the vce safety fo the switching device. Alibaba manufacturer directory suppliers, manufacturers. Marking type number marking code 1n4148 1n4148ph or 4148ph 1n4448 1n4448 fig. Diodes incorporated does not assume any liability arising out of the application or use of any product. Vishays diode portfolio includes both high voltage and small signal. Diodes incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes. Cathode band mark package code 1n4148 black h48 do35 outline 1. St4148 zener diode buy st4148 zener diode,4148,st4148 zener. Apr 27, 2009 for some highend apps they use a zener across the relay coil, but in series with a diode and the zener is inversed to what is shown above.
Silicon epitaxial planar diode for various detector, modulator, demodulator ade208147c z rev. The 1n4148 and 1n4448 are highspeed switching diodes fabricated in planar technology, and encapsulated in hermetically sealed leaded glass sod27 do35 packages. This can be controlled at time of manufacture to a certain voltage. Fast switching diode, 1n4148 datasheet, 1n4148 circuit, 1n4148 data sheet. Mmbz series zener diode vishay semiconductor diodes. Zener diodes are constructed in a way so that in reversebias the zener effect causes current to flow. Dec 01, 2017 speciality of 1n4148 diode is its fast recovery time of 8ns at a forward current of 10ma, hence this diode is used in places where fast switching are involved. The 1n4148 is a standard silicon switching signal diode. Q101 qualified and ppap capable these devices are pb. Silicon planar diodes, 1n4148 datasheet, 1n4148 circuit, 1n4148 data sheet. Valid provided that device terminals are kept at ambient temperature. General purpose, industrial, military and space applications.
If you face any sort of problem regarding any thing, you can ask me anytime in comments without even feeling any kind of hesitation. Scribd is the worlds largest social reading and publishing site. Silicon epitaxial planar diode fast switching diodes. Diotec, alldatasheet, datasheet, datasheet search site for electronic components and. A diode is an electronic component that permits current flow in only one direction. Your question may be answered by sellers, manufacturers, or customers who purchased this item, who are all part of the amazon community. Full text of crc handbook of chemistry and physics 85th. The 1n4148 is useful in switching applications up to about 100 mhz with a reverserecovery time of no more than 4 ns. Silicon epitaxial planar diode for various detector.
Jun 10, 2017 these were few of the applications associated with this switching diode. Encyclopedia of medical devices and instrumentation vol. Hermetically sealed glass with a stud on either side of the glass passivated chip provides excellent stability. Diodes, alldatasheet, datasheet, datasheet search site for electronic components and. Add a resistor in 10k to, sampling of vcs ph is performed at the end of conduction of t2. Pricing and availability on millions of electronic components from digikey electronics. Ph4148 datasheet pdf 100v, 200ma, zener diode, rectifier, ph4148 pdf, ph4148 pinout, ph4148 equivalent, ph4148 replacement, ph4148 schematic, manual. You have clicked a page that seems to be very popular. Since vout is connected across the diode, then that means the voltage on the output will be the same as the voltage drop, or 5v.
When connected in parallel with a variable voltage source so that it is reverse biased, a zener diode conducts when the voltage reaches the diode s reverse breakdown voltage. Switching and zener diodes electrical engineering stack. This diode is also available in other case styles including. As it is a lowcost twolead part, hobbyists use it for building project circuits, including those for. St4148 zener diode, find complete details about st4148 zener diode,st4148 zener diode, 4148,st4148 zener diode from integrated circuits supplier or manufacturershenzhen chip source electronic technology co. Zener diodes are designed in a way where the zener voltage is a much lower value. The 1n4148 is a generalpurpose discrete diode with high switching speed and modest maximum current and reverse voltage ratings. Connect two of these diodes in series between a 5v level device and a 3. Zener diodes are widely used as voltage references and as shunt regulators to regulate the voltage across small circuits. If you have a 5v zener diode, and you apply 9 volts backwards across it, it will conduct.
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