CUI INC – 1” x 1” Isolated DC/DC Converters Offer High Efficiency in a Rugged, Encapsulated Package


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CUI’s three new encapsulated isolated DC/DC converters models range from 10W to 30W. The PDQ10-D, PDQ15-D and PDQ30-D output 10W, 15W and 30W of power respectively in an industry standard 1” x 1” package, making them ideal replacements for larger 1” x 2” modules. The PDQ-D models also feature a 4:1 input voltage range of 9~36VDC or 18~75VDC with high typical efficiencies up to 90%.

Housed in a compact, low-profile DIP package with a five-sided, shielded metal case, the rugged, encapsulated modules measure just 25.4 x 25.4 x 10.16mm (1 x 1 x 0.40in) and are available with single regulated output voltages of 3.3, 5, 12 and 15VDC or dual regulated output voltages of ±5, ±12 and ±15VDC.

Thanks to its wide -40°C to +105°C operating temperature range and encapsulated design, the PDQ-D series is suitable for convection-cooled
equipment and harsh environments with target applications that include telecom, industrial, remote sensor systems and portable electronics.

All PDQ-D models offer an input to output isolation of 1,500VDC and feature remote on/off control while single output models also offer output voltage trimming that allows for a ±10% adjustment of the nominal output. Protections for over-voltage, input under-voltage lockout and continuous short circuit are also included.


  • 10W~30W of continuous power
  • Industry standard 1” x 1” package
  • 4:1 input range
  • Single/dual regulated output
  • Over-voltage, input under-voltage lockout, and short circuit protections
  • Five-sided shielded case
  • Remote on/off control
  • Output trim
  • -40°C to +105°C temperature range
  • Efficiency up to 90%


  • Industrial
  • Telecom
  • Remote sensor systems
  • Portable electronics