Allicdata Part #: | 317-1153-ND |
Manufacturer Part#: |
MF72-022D7 |
Price: | $ 0.26 |
Product Category: | Circuit Protection |
Manufacturer: | Cantherm |
Short Description: | ICL 22 OHM 20% 600MA 9MM |
More Detail: | Inrush Current Limiter 22 Ohms ±20% 600mA 0.354" (... |
DataSheet: | MF72-022D7 Datasheet/PDF |
Quantity: | 2897 |
Lead Free Status / RoHS Status: | Lead free / RoHS Compliant |
1 +: | $ 0.23310 |
5 +: | $ 0.22302 |
10 +: | $ 0.21672 |
50 +: | $ 0.18207 |
100 +: | $ 0.15120 |
250 +: | $ 0.13744 |
500 +: | $ 0.11683 |
1000 +: | $ 0.10308 |
5000 +: | $ 0.09277 |
Series: | MF72 |
Packaging: | Bulk |
Lead Free Status / RoHS Status: | -- |
Part Status: | Active |
R @ 25°C: | 22 Ohms |
Tolerance: | ±20% |
Current - Steady State Max: | 600mA |
R @ Current: | 1.108 Ohms |
Diameter: | 0.354" (9.0mm) |
Lead Spacing: | 0.197" (5.00mm) |
Approvals: | -- |
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Inrush current limiters, also known as ICLs, are in essence devices used to limit or control the maximum inrush current when an electric motor, transformer, capacitor, lamp, or other type of electrical device is first turned on. This is important to prevent any potential damage to the power supply, connected loads, or other causes such as overheating of the device itself. The MF72-022D7 inrush current limiter is one such device, and its application field, workings, and operational requirements will be detailed here.
Application Field
The MF72-022D7 is primarily used to limit inrush current in switching power supplies, LED drivers, motor controllers, and other linear or switching power supplies. It is also used in a variety of other power electronic applications, such as UPS systems, AC-DC converters, and battery chargers. It can be used in circuits up to 400VDC and is best suited for currents ranging from 0.5A to 60A.
Working Principle
The MF72-022D7 is essentially an electronic device that limits or controls the inrush current by providing an inrush current surge resistor in parallel with the input of the circuit. In operation, the inrush current limiter acts as a short-circuit between the input terminals, limiting the peak current flowing through the circuit. While providing this current limiting, the ICL also maintains a low reactance, allowing for a smooth power transition when the current is switched on.
The ICL operates on the principle of controlling the maximum current flow in the circuit by providing a series of resistors and an open circuit between the input terminals. The resistor network consists of a metal oxide varistor (MOV), which serves to provide a low resistance path at low voltages, and a resistor which provides a higher resistance when the voltage exceeds a certain level.
Once the voltage exceeds the certain level, the resistor network limits the current by reducing its flow through the resistor, thus reducing the total power available. This reduces the inrush current and thus reduces the potential for overheating of the device.
Operational Requirements
The MF72-022D7 is designed to operate in most linear or switching supplies and current and voltage conditions, however, they can be calibrated for specific requirements. The ICL must be connected to the input terminals of the circuit, to ensure that the current limiting is applied when the device is switched on.
The ICL should be mounted at least five centimetres away from other components in order to reduce the risk of damage or electrical interference. As well, the ICL should be orientated in a vertical position, as it will reduce the risk of damage due to vibration, shock, or other external influences.
The MF72-022D7 also requires adequate ventilation, as the resistor network generates heat during operation, which may cause overheating and damage to the device.
Conclusion
In conclusion, the MF72-022D7 inrush current limiter is a versatile and effective device for controlling the inrush current in switching power supplies, LED drivers, motor controllers, and other linear or switching power supplies. Its application field, working principle, and operational requirements have been discussed here. After installation and adjustment of the ICL, it will serve to safely and effectively limit the current and prevent issue from arising due to the inrush current.
The specific data is subject to PDF, and the above content is for reference
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