Technical Support

You can contact our technical support team through multiple channels: 1) Submit a support ticket via our website's technical support portal, 2) Email our FAE team directly at fae@litong.com, 3) Call our technical hotline during business hours, or 4) Contact your assigned sales representative who can escalate technical questions. For urgent production issues, please mark your inquiry as 'Urgent' for priority response within 4 hours.

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To receive efficient technical support, please provide: 1) Complete part number and quantity, 2) Detailed description of the issue or question, 3) Application information (voltage, current, switching frequency, topology), 4) Schematic and PCB layout if applicable, 5) Operating conditions (ambient temperature, cooling method), 6) Failure mode description if troubleshooting, and 7) Any oscilloscope captures or thermal measurements. The more complete the information, the faster we can assist.

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Yes, BeiLuo Electronics provides comprehensive evaluation support including: Free samples for qualified projects (typically 2-5 pieces), Evaluation boards for key products, Reference design documentation, Application notes and design guides, and On-site or remote technical consultation. Sample requests can be submitted through our website or through your sales contact. Typical sample lead time is 1-2 weeks from approved request.

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Xinleineng power modules are covered by a 24-month warranty from the date of shipment from BeiLuo Electronics. The warranty covers defects in materials and workmanship under normal use conditions. Warranty claims require return of the failed unit for analysis. If the failure is confirmed as a manufacturing defect, BeiLuo will provide replacement units at no charge. The warranty does not cover damage from misuse, overstress, improper installation, or unauthorized modifications.

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To request a Failure Analysis, contact BeiLuo technical support with the following information: 1) Part number and lot code of the failed unit, 2) Date code and serial number if available, 3) Detailed description of the failure symptoms, 4) Application circuit schematic, 5) Operating conditions at time of failure, and 6) Return the failed unit with proper ESD protection. Our FA process typically takes 2-4 weeks and includes electrical testing, X-ray inspection, decapsulation analysis, and root cause determination.

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Yes, all Xinleineng power modules are fully RoHS compliant (lead-free) and meet REACH regulations. Compliance certificates are available for download from our website or can be requested from your sales contact. The modules use Sn-Ag-Cu solder for die attach and terminal plating, with no restricted substances above threshold limits. Full material composition declarations (FMD) are available for customers requiring detailed substance information.

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Unused Xinleineng power modules should be stored in the original packaging in a controlled environment: Temperature between -10C and +35C, Relative humidity below 60% (non-condensing), Away from direct sunlight and corrosive atmospheres, and Protected from ESD. When stored under these conditions, the modules have a shelf life of 36 months from the date of manufacture. After opening the original packaging, modules should be used within 6 months or stored in a dry nitrogen cabinet.

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Yes, for high-volume applications (typically 10,000+ units annually), BeiLuo can facilitate custom power module design with Xinleineng. Customization options include: Custom voltage and current ratings, Specific package outlines and pin configurations, Integrated temperature sensing, Custom lead forming and trimming, and Special testing or screening requirements. Custom development typically requires 6-12 months from specification to production. Contact our sales team to discuss your custom requirements.

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Application notes and design guides are available in the Documentation section of our website. Current documents include: AN-001 - Gate Drive Design for IGBT Modules, AN-002 - Thermal Management Guidelines, AN-003 - Parallel Operation of Power Modules, AN-004 - Snubber Circuit Design, AN-005 - EMC Design for Motor Drives, and AN-006 - Solar Inverter Design Guide. These documents provide detailed design guidance, calculation examples, and best practices for implementing Xinleineng power modules.

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Proper ESD protection is essential when handling power modules: 1) Work at an ESD-safe workstation with grounded mat and wrist strap, 2) Keep modules in ESD-safe packaging until ready for use, 3) Avoid touching module terminals or exposed metal surfaces, 4) Use ESD-safe tools and soldering equipment, 5) Ground yourself before handling modules, and 6) Store unused modules in anti-static bags. While power modules are more robust than small-signal devices, gate oxide damage can occur from ESD and cause latent reliability issues.

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