Question 2: What does leakage current mean? Semiconductor leakage current PN junction in the cut-off flow of a very small current. Second, the power supply leakage current switching power supply in order to reduce interference, in accordance with national standards, must be equipped with EMI filter circuit. Due to EMI circuitry, making the switching power supply in the connection to the power supply to the ground after a small current, which is the leakage current. If not grounded, the computer casing will be 110 volts to the ground, touching the hand will have a numb feeling, while the computer will also have an impact on the work. Third, the capacitor leakage current capacitive medium can not be absolutely non-conductive, when the capacitor plus DC voltage, the capacitor will have leakage current. If the leakage current is too large, the capacitor will heat damage. In addition to electrolytic capacitors, other capacitors leakage current is very small, so the insulation resistance parameter to indicate its insulation performance; and electrolytic capacitors due to leakage is larger, so the leakage current to indicate its insulation performance (proportional to the capacity).
The rated DC operating voltage applied to the capacitor will be observed charging current changes began to be very large, and with time and decline, to a certain - the end value to reach a more stable state of this - the end value of the current is called the leakage current.
The formula is: i = kcu (μa); which k value for the leakage current constant, the unit is μa (v? μf). Fourth, the filter leakage current power supply filter leakage current is defined as: the rated AC voltage filter shell to the AC inlet any should─end current.
If all the ports of the filter and the shell is completely insulated, the leakage current value depends mainly on the *** mode capacitance CY leakage current, that is, mainly depends on the CY capacity.
As the filter leakage current size, design to personal safety, the international countries have strict standards for insertion: for 20V/50Hz AC grid power supply, - the general requirements of the noise filter leakage current is less than 1mA.
Question 3: What is the difference between the leakage current and leakage current Hello:
- 1, "Leakage current", "leakage current", "leakage current", "leakage current", "leakage current", "leakage current", "leakage current". -1, "leakage current" generally refers to the leakage current of the laboratory experiments, such as high and low voltage testing, testing of operating tools, testing of insulating tools, protective equipment testing, etc. The "leakage current" is the leakage current of the laboratory experiments, such as high and low voltage testing, testing of operating tools, testing of insulating tools, testing of protective equipment. Leakage current" refers to the leakage in the line, as well as the leakage current of components (such as transistors).
--2, "leakage current" test, you need a special instrument (can not use the microampere meter test, or once the breakdown current will burn the microampere meter, a big accident). The "leakage current" depends on the line to be tested (or circuit, such as line version) of the situation, the choice of the appropriate instrument (or ammeter) to carry out.
For example: the Electricity Bureau of the electrician's personal protective equipment (such as low-voltage 500V insulating shoes) test, unqualified products will be breakdown (this is very common), this time the leakage current is very large, so you can not simply use the microampere meter.
Question 4: What is called leakage current? PN junction at the cut-off of the very small current flowing. In the D-S is not in the forward bias sea G-S reverse bias, the conductive channel open, D to S will have current flow. But in reality, due to the presence of free electrons, the attachment of free electrons to sio2 and N+, leads to leakage current in D-S.
Question 5: What is leakage current? Leakage current is the current flowing through the insulator. Any insulator is not absolutely "insulating", there will be a very small conductivity, but usually the leakage current is negligible.
There are four types of leakage current: semiconductor leakage current, power supply leakage current, capacitor leakage current, and filter leakage current.
Your question presumably refers to electrical safety leakage current.
According to the Ministry of Construction standard JGJ/T16 - 92 "Civil Building Electrical Design Code" of the relevant provisions of the rated leakage action current value of electrical appliances can be selected according to the following data:
1, hand-held electrical equipment for 15mA;
2, harsh environment or wet places
2, harsh environment or wet place of electrical equipment for 6 ~ 10mA;
3, medical electrical equipment for 6mA;
4, building construction site of electrical equipment for 15 ~ 30mA;
5, household appliances circuit for 30mA;
6, sets of switchgear distribution boards, etc. for 100mA;
7, to prevent electrical fires for 300mA.
Question 6: What is the meaning of large leakage current Leakage current refers to the current flowing into the circuit is greater than the outflow current, indicating that there are other ways in the circuit will be the current shunt, the difference in the current is the leakage current, and the large leakage current should be referred to as leakage current current value is relatively large
Question 7: What are the reasons for the leakage current is too large? The leakage current is due to the capacitance of the medium is not complete, but there is a certain impedance, so there is a depletion of the image in a part of the depletion of the form of flow is the form of leakage current.
One of the reasons for the high leakage current may be due to the chip's process problems. General chip with a long time, the leakage current will increase, common as cell phone standby time is not long, is due to the chip leakage current is too large.
In addition, for the leakage current, you can also take some protection design way, to improve, in the next is not engaged in the design work, so not particularly clear.
big question. it can be a book.
Basically, if the I leakage is less than 1x 10 -12 , you have a clean process.Process:
STI influence The leakageGIDLDIBLSilicde
Leakage is mainly caused by the following factors
1. design: design error, or design rules smaller than the production line rules
2. process: surface leakage, mainly caused by the surface of the inverse (defects can only lead to localized leakage)
3. testing generally does not cause leakage, unless the peripheral Leakage, unless the periphery is wrong
Generally speaking, the design rules and production line rules are seriously inconsistent with the low-level error is relatively rare, unless you are very familiar with the production line, you can do the limit of the test, the production line is dirty surface antipattern is more likely.
Asked too general ......
Semiconductors actually encompass too many things.
To say that this is a leakage.
Is the input leakage current or output leakage current ah!
But the main thing is that the first level of the chip that is directly connected to the pin is not completely shut down
For IDDQ testing.
I'd like to know if the open in the ic line can also cause leakage
If there is no problem with the product, it's usually a matter of measurement, time.... The number of tests... Calculation of the value .....
Excessive humidity during testing can also lead to leakage current
I've been working on a feedback of this problem for a few days, I did a power curve analysis, I was doing the middle test, I feel that there is something wrong with the package, maybe I didn't get the gold package, there are so many reasons, I still don't know exactly where, I'm going to go to the production line mountain to look at it
Personally I think that the actual production, especially the stable line production generates a lot of leakage current, so I don't want to see how the product will perform.
Personally, I think that the actual production, especially the production of stable line to produce the biggest reason for leakage is pollution, due to the production of irregularities caused by the operation.
Agree that the cleanliness of the production line is the biggest key to controlling metal ion taint
The main reason is that the insulation is reduced, the insulation place or time insulation is poor
Question 8: What is the leakage current of the transistor PN junction is theoretically working in reverse is completely cut off, but in fact there is still a very small amount of current (uA level or less), the direction of this current is from the N region to the N region, the direction is from the N region to the N region. The direction of this current is from the N area to the P area, and the size is very much related to the PN junction process.
Applying this principle, in a triode, even when the triode is cut off, there is a tiny current between the CEs, and it is not completely cut off.
From C to E, simply put, the triode is difficult to completely shut down, this problem also exists in the MOS tube, the smaller this parameter, the better.
Question 9: What is the meaning of the continuous leakage current of electronic components We are pleased to be able to answer your question
Leakage current is. Generally refers to circuit equipment leakage that is, there is a tributary current generated when the current;.
1). Generally refers to the circuit equipment leakage that there is a tributary current generated when the current;
2). Analyzing leakage current is very important for the design of the grid system;
3). Electrical equipment needs to be designed with leakage protection switches according to the magnitude of leakage current.
4). In a diode is the reverse current that flows in the diode when a reverse voltage is applied to the diode.
Your adoption is my forward momentum, do not understand the follow-up questions.
Question 10: What is the meaning of the triode leakage current It is the leakage current between the emitter and collector of the triode, also called the penetration current of the triode. The smaller this data, the better.