AQY280EH - Panasonic

AQY280EH Frequently Asked Questions (FAQs)

• What is the recommended PCB layout and land pattern for the AQY280EH?
  Panasonic provides a recommended PCB layout and land pattern in their application notes, which can be found on their website. It's essential to follow these guidelines to ensure proper soldering and to prevent thermal issues.
• How do I handle the AQY280EH's high inrush current during switching?
  To handle the high inrush current, it's recommended to use a soft-start circuit or an NTC thermistor in series with the relay coil to limit the inrush current. Additionally, a freewheeling diode can be used to reduce the voltage spike during switching.
• What is the maximum allowable voltage drop across the AQY280EH's contacts?
  The maximum allowable voltage drop across the contacts is 100 mV. Exceeding this value may lead to contact welding or other reliability issues.
• Can I use the AQY280EH in a high-temperature environment?
  While the AQY280EH is rated for operation up to 85°C, it's essential to consider the derating curves provided in the datasheet. Above 70°C, the relay's life expectancy and performance may be affected. Consult with Panasonic's application engineers for specific guidance on high-temperature applications.
• How do I ensure the AQY280EH's electromagnetic compatibility (EMC) in my design?
  To ensure EMC, follow proper PCB layout and shielding techniques, and consider using a metal shield or a mu-metal shield around the relay. Additionally, ensure that the relay is properly grounded and that the coil and contact circuits are decoupled.