DR74-821-R - Eaton

DR74-821-R Frequently Asked Questions (FAQs)

• What is the recommended PCB layout and land pattern for optimal performance?
  Coiltronics recommends a PCB layout with a solid ground plane underneath the inductor, and a land pattern with a minimum of 1.5 mm clearance around the component to minimize parasitic capacitance and ensure proper heat dissipation.
• How does the inductor perform in high-frequency applications above 1 MHz?
  While the datasheet only specifies up to 1 MHz, the DR74-821-R is capable of operating at higher frequencies. However, the inductance value and Q factor may degrade. For frequencies above 1 MHz, it's recommended to consult with Coiltronics' application engineers for customized guidance.
• What is the maximum allowable voltage across the inductor?
  The maximum allowable voltage across the DR74-821-R is 50 Vrms. Exceeding this voltage may lead to reduced reliability, increased power loss, or even component failure.
• How does the inductor behave in high-temperature environments?
  The DR74-821-R is rated for operation up to 125°C. However, the inductance value and Q factor may decrease with increasing temperature. For applications above 125°C, Coiltronics recommends consulting their application engineers for customized guidance.
• Are there any specific soldering or assembly recommendations for this component?
  Yes, Coiltronics recommends using a soldering temperature of 260°C (max) and a soldering time of 3 seconds (max) to prevent damage to the component. Additionally, the component should be handled with care to avoid mechanical stress or damage to the leads.