1、 Appearance inspection: timely detection of physical damage

1. Integrity of ontology
   • Visually inspect the surface of the inductor daily for cracks, deformations, burnt marks, or broken pins. If any abnormalities are found, immediately stop using and replace.
   • Focus on checking whether the inductor packaging is complete to avoid internal coil oxidation or short circuit caused by packaging damage.
2. Pin status
   • Check if the pins are oxidized, bent, or poorly soldered. Oxidation can increase contact resistance and affect signal transmission; Bending or virtual soldering may cause circuit faults.
   • Use a magnifying glass or microscope to observe whether there are cracks at the root of the pin to prevent pin breakage due to mechanical stress.

2、 Environmental control: AvoidharshCondition influence

1. temperature management
   • Ensure that the working environment temperature of the inductor is within the rated range (usually -40 ℃ to+125 ℃, refer to the product specification for details), and avoid long-term exposure to high temperatures (such as exceeding 85 ℃) that may cause degradation of the magnetic core material performance or aging of the coil insulation layer.
   • If the device has poor heat dissipation, it is necessary to increase the cooling fan or optimize the heat dissipation design to prevent local overheating of the inductor.
2. humidity control
   • Keep the relative humidity of the working environment below 70% to avoid a decrease in insulation resistance caused by the inductance absorbing moisture, which may lead to leakage or short circuit.
   • When using inductors in humid environments, moisture-proof packaging (such as epoxy resin coating) or adding desiccants can be considered.
3. Dust and corrosion prevention
   • Avoid exposing the inductor to dust, oil, or corrosive gases to prevent impurities from entering the inductor or adhering to the pins, which can affect the contact performance.
   • Regularly clean the dust inside the equipment, especially in the area around the inductor.

3、 Usage standard: prevent damage caused by improper operation

1. Welding specifications
   • Welding temperature and timeStrictly control the welding temperature (usually 260 ℃± 10 ℃) and time (not exceeding 5 seconds) in accordance with the product specifications to avoid high temperature causing cracking of the inductor core or damage to the coil insulation layer.
   • welding methodRecommend using reflow soldering or wave soldering to avoid damaging the inductor due to improper temperature control or prolonged soldering time during manual soldering.
   • Pin processingBefore welding, ensure that the pins are not oxidized. After welding, check if the pins are vertical and not bent to avoid short circuits or poor contact.
2. Avoid mechanical stress
   • When installing or disassembling inductors, avoid applying mechanical force (such as squeezing or twisting) to the inductor body to prevent the magnetic core from breaking or the coil from deforming.
   • If it is necessary to bend the pins, it should be done at least 2mm away from the inductor body, and the bending angle should not exceed 90 °.
3. Current and voltage limitations
   • Ensure that the operating current of the inductor does not exceed the rated current (usually labeled as "Ir" or "Rated Current"). Long term overload can cause severe heating of the inductor, saturation or even burnout of the magnetic core.
   • Avoid the inductance from being subjected to shocks exceeding the rated voltage (such as electrostatic discharge or power supply fluctuations), and prevent insulation layer breakdown.

4、 Cleaning and maintenance: removing pollutants

1. regular cleaning
   • Gently wipe the surface of the inductor with a dust-free cloth or soft bristled brush to remove impurities such as dust and oil, and avoid using chemical solvents (such as alcohol and acetone) for cleaning to prevent corrosion of the inductor surface or pins.
   • If there are stubborn stains on the surface of the inductor, it can be gently wiped with a small amount of deionized water, and then immediately dried with a dry cloth and air dried.
2. Cleaning frequency
   • Clean every 3-6 months in a normal environment; In dusty or corrosive environments, it is necessary to shorten the cleaning cycle (such as once a month).

5、 Parameter monitoring: Ensure stable performance

1. Inductance test
   • Regularly use an LCR tester to measure the inductance (L value), ensuring that it is still within the rated range (such as ± 10% or ± 20%, refer to the product specification for details).
   • If the inductance deviation is too large, it may be caused by aging of the magnetic core, short circuit or open circuit of the coil, and the inductance needs to be replaced.
2. Q-value and DC resistance (DCR) monitoring
   • Test the Q value (quality factor) and DC resistance (DCR) of the inductor. A decrease in Q value or an increase in DCR may be caused by coil oxidation, increased core loss, or poor welding, and further investigation is needed to determine the cause.
3. Test frequency selection
   • When testing inductance, it is necessary to choose a testing frequency that is close to the actual operating frequency (such as high-frequency inductors typically tested at 1MHz or higher) to ensure accurate test results.

6、 Storage management: prevent long-term storage damage

1. storage environment
   • Store the inductor in a dry, ventilated, and non corrosive gas environment, with a temperature controlled between -10 ℃ and+40 ℃ and a relative humidity below 60%.
   • Avoid direct sunlight or proximity to heat sources to prevent packaging aging or changes in magnetic core performance.
2. Packaging and Placement
   • Unused inductors should be kept in their original packaging (such as anti-static bags or tape packaging) to avoid short circuits caused by pins coming into contact with metal or other conductive objects.
   • Arrange them neatly and orderly to avoid mutual squeezing or collision of inductors.
3. 存储期限
   • The storage period of inductors is usually 1-2 years. After exceeding the period, the performance needs to be retested and qualified before use.