Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [device-characteristics]

45 questions
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What prevents MOSFET drain-to-gate leakage current?

What in the structure of a MOSFET prevents leakage current flowing from the drain to the gate of a MOSFET when the drain is at a higher potential than the gate? I am assuming that drain-to-gate leakage current doesn't exist at all because it seems…
mamawmaw
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What is this antenna called, and what does the polarization and radiation pattern look like?

I was searching for helical antenna designs and stopped here to look around when I saw this antenna (below). I am guessing it has a somewhat omnidirectional characteristic that would be advantageous to put on a car/plane/helicopter to communicate…
uhoh
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Ideally, what sort of characteristics should a transistor have for a regular linear amplifier?

Most of us recognize the graph of \$I_C\$ against \$V_{CE}\$ for different base currents (\$I_B\$): - And, ideally (as we are taught and believe) we would prefer the "constant current" part of the graph to be as flat as possible but, if we had a…
Andy aka
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How to interpret this Zener diode IV characteristic diagram?

I'm looking at the datasheet for the BZX55 Zener diode. The given Zener IV characteristic are in page 5, Figure 8 and 9, (one copied below): I'm confused on what this is saying. I understand that the hyperbolic curve is showing the power limit…
Nick_2440
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Operating above maximum characteristic supply voltage, but below absolute maximum voltage

I'm using an Alliance parallel SRAM IC, and under the Electrical Characteristics table, it says VCC can be min 3.0 V, max 5.5 V. In the Absolute Maximum Characteristics table, it says terminal voltage must be no more than 7 V with respect to VSS…
Nick U.
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dsPIC33 ADC: Why is the minimum TAD interval such an oddly-specific number (117.6ns) for 12-bit conversion?

I'm writing the firmware for a data-acquisition board using the dsPIC33FJ64GP804 MCU and I noticed something strange reading the electrical characteristics for 12-bit A/D conversion: The ADC clock period (emphasis mine) is listed as 117.6ns, which…
anrieff
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MQ-4 sensitivity characteristics - raw data

I need to convert Rs/Ro ratios of my MQ-4 sensor to PPM. For that I found the sensitivity plot in the datasheet (https://www.sparkfun.com/datasheets/Sensors/Biometric/MQ-4.pdf). However that is a pdf and an image in it. How can I get the raw values…
andy_m
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Physical Properties of Memristor from I-V characterestics

I'm trying to understand what an IV plot of a memristors tells me in terms of physical properties. So these are the questions with the relevant plots: If I have a pinched hysteresis loop that does not cross the origin (as in the image below), so…
Lost In Euclids 5th Postulate
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Vector monitor, purpose of a third "green gun" connection

I recently came into possession of a vector monitor, as shown below (Vector Monitor, Model: IO-1128, from Heathkit). Its got a red, blue and green "gun" connections. However, I am not sure about its third green connection. From the schematic…
plu
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reverse bias of the gate of an N-channel enhancement mosfet

So how negative can I drive the Vgs of an N-channel Mosfet before damage occurs? Datasheets specify BVDSS and BVGSS but these are "forward" breakdown voltages -- ie the absolute maximum Vds before avalanche breakdown of the drain body pn junction,…
jrive
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Transistor absolute maximum Collector-Base voltage more than Collector-Emitter voltage

In the Microsemi 2N918 NPN RF transistor datasheet, the absolute maximum ratings are given as: The fact that \$V_{CBO}\$ is so much greater than \$V_{CEO}\$ has me confused. Additionally, the datasheet specifies \$V_{CB}\$ at 25V and 30V for…
user2943160
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Standard Thick Film Chip Resistor datasheets not mentioning storage temperature

I am looking for alternatives for a 120ohm 5% 1206 standard thick film chip resistor. I have noticed some MFRs (KOA speer, Vishay, Bourns) do not always detail the storage temperature in their datasheets. For example, I am yet to find it for PN:…
313Ctron
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Is there anywhere I can download BJT Transistor I-V data?

Is there anywhere I can download some current-voltage data for a bipolar junction transistor? (It doesn't matter that much which one.) To explain further, for a simple BJT circuit we have the following variables. (Assuming NPN.) Base-Emitter…
user3728501
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Transfer characteristics of a Toshiba DMOS FET

I am looking at the TBD62003A load driver, but it is very light on details about transfer characteristics. Are there characteristics curves available from a similar device? Specifically, I want to know what will happen if there is a <150 μs pulse of…
EdL
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V-I characteristics of a non linear, bilateral element

My professor had told us that Bilateral elements have V-I characteristics which are symmetric about the origin. In an exam, we were asked to draw the V-I characteristics of a non linear, bilateral element. The given answer was: Shouldn't "symmetric…
satan 29
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