Technical Support

LiTong provides comprehensive technical support resources for Gejian Semi products including: Detailed application guides covering IGBT selection, SiC MOSFET application, gate driver design, and thermal management. Product selection tools and calculators to help choose the right devices for your application. Reference designs with complete schematics, PCB layouts, and BOM lists. Evaluation kits for rapid prototyping and testing. Simulation models including SPICE and thermal models. Application notes covering specific topics like protection circuits, EMI design, and layout guidelines. Our FAE team is also available for direct support including design reviews, troubleshooting assistance, and on-site support for critical projects.

Browse our technical articles below or contact our FAE team for personalized support.

We offer multiple ways to get help with Gejian product selection: Use our online selection guides and application notes to understand the key selection criteria for different product families. Contact our FAE team directly for personalized recommendations based on your specific application requirements. Request reference designs that match your application to see recommended device selections. Use our evaluation kits to test different devices in your application. Our FAE team can provide detailed comparisons between different device options and help you understand the trade-offs. For complex applications, we can arrange technical meetings to review your requirements and provide detailed recommendations. We also offer thermal modeling support to help validate your device selection.

Contact our FAE team for personalized product selection assistance. We can help you choose the optimal devices for your application.

LiTong provides comprehensive design support for Gejian products: Application engineering support from our experienced FAE team who can assist with schematic review, PCB layout recommendations, and design optimization. Reference designs that can be used as starting points for your designs. Thermal design support including heatsink selection and thermal modeling. Gate drive design support including component selection and protection circuit design. EMI/EMC design guidance to help meet regulatory requirements. Protection circuit design support including desaturation detection and overcurrent protection. We also provide software and firmware examples for motor control applications. For high-volume customers, we can provide on-site support and training.

Contact our FAE team for design support. We can assist with all aspects of your design from concept through production.

If you encounter issues with Gejian products, we recommend the following troubleshooting approach: First, review our application notes and FAQs for common issues and solutions. Check the basics: verify power supply voltages, gate drive signals, and control signals with an oscilloscope. Monitor temperatures to ensure devices are operating within thermal limits. Check for proper protection circuit operation. If the issue persists, contact our FAE team with detailed information including: schematic and PCB layout, operating conditions (voltage, current, temperature), description of the issue and when it occurs, scope captures of relevant signals, and photos of the setup if applicable. Our FAE team can provide remote troubleshooting support or on-site assistance for critical issues. We also have extensive experience with common pitfalls and can quickly identify root causes.

Review our troubleshooting guides first, then contact our FAE team with detailed information for assistance.

Yes, samples of Gejian products are available for evaluation. To request samples, contact our sales team with your requirements including: device part numbers and quantities, application description, project timeline, and estimated annual usage. We typically provide small quantities (5-10 pieces) for initial evaluation at no charge for qualified projects. For larger sample quantities, we can discuss your specific needs. Sample lead time is typically 1-2 weeks for standard products. We also offer evaluation kits for our major product families, which include complete hardware and software for comprehensive evaluation. For high-volume production planning, we can provide long-term supply agreements and pricing.

Contact our sales team to request samples. Provide your application details and project information.

Comprehensive documentation is available for all Gejian products: Datasheets with complete electrical specifications, thermal characteristics, and mechanical dimensions. Application notes covering specific application topics and design guidelines. Reference designs with schematics, PCB layouts, and BOM lists. Evaluation kit user manuals with setup and testing procedures. Simulation models including SPICE models for circuit simulation and thermal models for thermal analysis. Quality and reliability reports including qualification test results. Safety and compliance certificates. All documentation is available through our website or by contacting our sales team. We can also provide customized documentation or application-specific guides upon request.

Browse our technical articles below or contact our sales team for specific documentation requests.

You can contact our FAE team through multiple channels: Email support for technical questions and design reviews. Phone support for urgent issues and real-time troubleshooting. Online contact form on our website for general inquiries. For complex projects, we can schedule video conferences or on-site visits. Our FAE team has expertise in all Gejian product families including IGBTs, SiC MOSFETs, power modules, and gate drivers. We have FAEs specializing in industrial drives, automotive applications, renewable energy, and power supplies. Response time is typically within 24 hours for email inquiries and same day for urgent issues. For customers with high-volume projects or strategic partnerships, we can assign dedicated FAE support.

Contact our FAE team via email, phone, or online form. We are ready to assist with your technical questions.

Yes, LiTong provides training programs on Gejian products: Product overview training covering device families, key features, and selection criteria. Application-specific training for motor drives, EV traction inverters, solar inverters, and power supplies. Hands-on workshops using evaluation kits for practical experience. Design training covering thermal design, gate drive design, and protection circuits. Training can be provided on-site at your facility or online via web conferencing. We can customize training content to focus on your specific application areas. For customers with multiple engineers, we can schedule dedicated training sessions. Contact our sales team to discuss your training needs and schedule a session.

Contact our sales team to schedule training for your engineering team. We offer customized training programs.