LD20-23B05R2 - 20W PCB Mount AC/DC Power Supply (5VDC, 4A)

The LD20-23B05R2 is a compact, high-efficiency 20W encapsulated AC/DC switch mode power supply module designed for reliable performance in industrial, commercial, and embedded electronic systems. With an ultra-wide input voltage range of 85-305VAC (100-430VDC), this power supply delivers stable and regulated 5VDC output even in challenging or unstable mains environments.

Providing a robust 5VDC at up to 4A, the module is ideal for powering microcontrollers, communication devices, industrial sensors, IoT nodes, embedded controllers, and other 5V logic-based systems. The LD20-23B05R2 features high conversion efficiency, low standby power consumption, and a fully encapsulated design for enhanced durability and electrical isolation.

Engineered to meet stringent safety, EMI, and environmental standards, including CISPR32/EN55032 Class B, EN55014, and UL94V-0, this power module is built to operate reliably across a wide temperature range and high-altitude conditions. Its compact footprint enables easy integration into space-constrained PCBs.

Features

• 20W high-efficiency AC/DC power module
• Ultra-wide input range: 85-305VAC / 100-430VDC
• Regulated 5VDC output at 4A
• High efficiency for reduced heat and improved reliability
• Very low no-load power consumption (<0.1W typical)
• Wide operating temperature: -40 C to +85 C
• Suitable for use up to 5000m altitude
• Fully encapsulated casing with UL94V-0 flame-retardant rating
• Meets EMC standards: CISPR32/EN55032 Class B, EN55014
• Over-current, over-voltage, and short-circuit protection
• Compact PCB-mount design ideal for industrial and embedded systems

Specifications

Electrical Parameters

Input Voltage:

• AC: 85-305VAC
• DC: 100-430VDC
• Frequency: 47-63Hz

Output Voltage:

• 5VDC
  Output Current:
• 4A
  Rated Power:
• 20W

Efficiency: High efficiency (typical for LD20 Series)
No-Load Consumption: <0.1W

Protections

• Short-Circuit Protection
• Over-Voltage Protection
• Over-Current Protection

Environmental

• Operating Temperature: -40 C to +85 C
• Storage Temperature: -40 C to +105 C
• Altitude: up to 5000m
• EMC Compliance: CISPR32/EN55032 Class B, EN55014
• Flammability Rating: UL94V-0 (plastic housing)

Mechanical

• Type: PCB Mount | Encapsulated
• Group: Power Adaptors
• Dimensions: 52.40 × 27.20 × 24.00 mm

What's in the box
1 x LD20-23B05R2 - 20W PCB Mount AC/DC Power Supply (5VDC, 4A)