1). Check the appearance: Inspect whether the shell/glass seal is cracked or the pins are oxidized; replace the capacitor if any damage is found.
2). Test insulation: Use a multimeter to measure the insulation resistance between the shell and pins (in humid environments, dry the capacitor first before testing).
3). Verify parameters: Compare with the specification sheet to confirm if it is compatible with the current voltage/frequency; replace it with a matching model if there is a mismatch.
4). Check installation: Re-tighten the ground connection, cut short overly long pins, and install anti-loosening washers in vibrating scenarios. Learn More

1). Improper selection: Mismatched voltage/frequency (e.g., low-voltage capacitors used in high-voltage scenarios, high-frequency capacitors used in ultra-high-frequency environments);
2). Installation issues: Poor grounding, excessively long pins, and seal failure (due to moisture/dust intrusion);
3). Environmental impacts: High temperatures exceeding the temperature resistance range, and internal breakage caused by severe vibration;
4). Aging and wear: Capacitance attenuation after long-term use, and leakage due to aging of the insulation layer. Learn More

        For models without stock, shipment will be made within 7-25 working days after the order is confirmed and payment is received; for customized products, shipment will be made within 25-65 days after the order is confirmed and payment is received. Please contact us to confirm the specific delivery time.

        LCA feedthrough capacitors, leveraging their extremely low parasitic inductance and ultra-high frequency self-resonant characteristics, are widely used in fields such as national defense communications, aerospace, medical equipment, radio and television, instrumentation, automotive electronic products, microwave modules, and smart appliances. Learn More

        To prevent interference from entering or leaving the equipment, feedthrough EMI filters can be mounted on the walls of a shielded box, Any input or output cables will pass through the filter. The mains or desired signal passes through the filter unaffected, while higher frequency interference is removed. A shielded enclosure prevents radiated interference and a feedthrough filter prevents conducted interference. This ensures the integrity of the device. Learn More

        In the field of power electronics, EMI filters are used to suppress and filter out unwanted high-frequency electromagnetic noise generated by the switching operations of power electronic circuits. Especially with ceramic EMI filters, the primary function of these components is to provide a low-impedance path for unwanted high-frequency noise while allowing the desired power signal to pass with minimal impedance. EMI filters act as low-pass filters, attenuating high-frequency noise and preventing its propagation. Learn More

        In general, the stability of the dielectric constant (and therefore the filter capacitance value) relative to certain operating and environmental parameters deteriorates as the dielectric constant increases. The specific factors that affect the dielectric constant are temperature, voltage, frequency and time(aging).
        The three main ceramic dielectrics used in EMI filter manufacturing are often referred to as ultra-stable(NP0/C0G), stable(X7R),and general-purpose(Y5U or Y5V). Learn More

        The capacitors used in EMI filters are generally ceramic capacitors, which are also known as feed-through capacitors due to their physical structure.
        The self inductance of feed-through capacitors is much smaller than that of ordinary capacitors, so the self resonant frequency is very high. What's more, the through hole design effectively prevents high-frequency signals from directly coupling from the input end to the output end. This combination of low-pass and high impedance provides excellent suppression effect in the 1GHz frequency range. Learn More

        In general, for models with stock available, the order will be shipped within 1-2 working days after confirmation of payment; For models that are not in stock, they will be shipped within 7-25 working days after order confirmation and payment; For customized products, shipment will be made within 25-65 days after order confirmation and payment.

        In general, the development cycle for customized products is 25-65 days, and the specific delivery time depends on your product needs. You can submit your customized requirement form on the customized design page to obtain the accurate delivery time.
        The minimum order quantity for customized products is XXX. Please pay attention to your product quantity requirements. Details can be found at Customization .

       Click on the custom design page, fill in your requirements and detailed information on the form on this page, click send, and we will reply to you as soon as possible.

       The customization process includes five processes: communication of requirements, scheme design, sample production, mass production, delivery and after-sales service. Details can be found at Customization .

        After selecting the desired product models, add them to your shopping cart, fill in your personal information, and submit the form. After receiving the form, we will contact you as soon as possible to proceed with the next transaction. We support multiple payment methods such as Paypal, bank transfer, XXX, XXX, etc.

       Details can be found at Link .

        We provide a tiered quotation. After adding the required model to your shopping cart, please fill in the required quantity and personal information in the form, then click send. We will reply to you as soon as we receive it. Details can be found at Link .

        We offer multiple logistics methods, such as FedEx, DDL, etc. If you have specific needs, please let us know in advance.

        The logistics status can be checked through the express tracking number we provide.

        For customized products, after confirming payment for the customized mold, we will provide 5-10 samples for you to test; For general products, if your demand reaches XXX or more, we will provide 2-5 samples for you to test.

        In either case, the shipping cost of the samples will be borne by you. Customization

        View the download center where you can find various documents you need. Link

        Within 3 days from the date you receive the product, if there are any quality issues, you can apply for a return. Details can be found at Link .

        Normally, the warranty period for products is one year; If you have special warranty claims (such as extending the warranty period or increasing the warranty scope), you can communicate with our customer service specialist at any time. We will negotiate and develop a mutually recognized warranty plan based on the product type, procurement batch, and usage scenario to protect your rights.

        The warranty scope includes XXX, XXX, XXX and other aspects. For details, please refer to Link  .