Overview The URB4803YMD-5WR3 is a compact DC-DC power module designed to convert a wide 48 V input (18–75 V range) to a single 3.3 V output at 1.2 A. Built for rugged industrial applications, this module provides galvanic isolation between input and output, robust protection features, and a small, standardized footprint with a consistent pinout to simplify design-in and interchangeability within the UR(B)_YMD family. Key Features Input: 48 V input with wide range 18–75 V Output: 3.3 V at 1.2 A (single output) Isolation: galvanic isolation between input and output Package: URB4803YMD-5WR3 with dimensions 25.4 × 25.4 × 11 mm Protection: overcurrent protection, short-circuit protection; thermal considerations per datasheet EMC: designed for stable operation with external filtering networks as recommended Electrical Specifications (Typical) Parameter Value Notes Input voltage 18–75 V Wide-range input for automotive and industrial environments Output voltage 3.3 V Single output Output current 1.2 A Continuous Isolation Yes Galvanic isolation between input and output Operating temp -40°C to 85°C Ambient range varies by application Mechanical and Pinout (Representative) Fixed pinout with a consistent footprint across UR(B)_YMD family. Refer to the datasheet for exact pin definitions and layout. Visuals below illustrate bottom and side views for the single-output variant. Notes on EMC and Filtering Follow vendor recommendations for external EMC filtering to meet ripple and noise targets. Typical guidance includes appropriate capacitors and inductors in the input and output stages, tailored to the single 3.3 V output configuration. Usage Guidance Integrate with proper input filtering, observe minimum load requirements for stable operation, and verify that total external capacitance does not exceed the recommended limits. Ensure mechanical mounting adheres to the provided footprint for reliability. Documentation and Resources Consult the URB_YMD family datasheets and application notes for full electrical and mechanical details, including pin definitions, thermal considerations, and recommended test circuits.
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