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Browse Resources →Technical Articles & Guides
The Engineer's Guide to Selecting the Right Relay
Avoid common pitfalls. This step-by-step guide covers load calculation, contact materials, coil voltage, and environmental factors to consider.
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5 Ways to Protect Your Relay Coil and Driver Circuit
Learn essential protection techniques to extend relay life and prevent costly circuit failures.
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Troubleshooting Relay Contact Sticking (Welding)
Understand the root causes of contact welding and how to prevent this common failure mode.
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An Introduction to High-Voltage DC Relays for EVs
Explore the unique challenges and solutions for HVDC switching in electric vehicle applications.
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Latching Relays Explained: How They Save Energy
Discover how latching relays work and their benefits in energy-efficient applications.
Read Article →Frequently Asked Questions
What information do I need for relay selection?
For proper relay selection, provide: load voltage/current, switching frequency, coil voltage, environmental conditions (temperature, humidity, vibration), and any special requirements (isolation, latching, etc.).
How do I calculate the proper relay lifetime?
Relay lifetime depends on load type, switching frequency, and environmental conditions. Contact our FAE team for specific calculations based on your application requirements.
Can you provide custom relay configurations?
Yes, HONGFA offers custom configurations including special coil voltages, contact arrangements, and mounting options. Minimum order quantities may apply.
What testing and certifications do HONGFA relays have?
HONGFA relays are tested to international standards including UL, CE, RoHS, and automotive standards. Specific certifications vary by product family.
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