QS4E_4803S3U – GAPTEC

The QS4E_4803S3U is a miniature, galvanically isolated DC-DC converter module designed for point-of-load applications requiring a stable 3.3V output. It accepts a wide input voltage range of 43.2V to 52.8V (nominally 48V ±10%) and delivers a regulated 3.3V output at 75.7mA, providing a maximum power output of 0.25W. Isolation is achieved through a robust transformer design, offering significant protection against ground loops and noise. The converter boasts a typical efficiency of 76% across its operating input voltage range. Housed in a compact, surface-mountable package, the QS4E_4803S3U is designed for reliable operation across a broad temperature range of -40°C to +85°C, making it suitable for demanding industrial and telecommunications environments. Internal filtering minimizes EMI emissions, simplifying system-level compliance.