STMicroelectronics SPDCPOE05

Overview

SPDCPOE05 from STMicroelectronics is an IEEE 802.3af-compliant, isolated Power over Ethernet (PoE) powered device (PD) module delivering 5 V / 2 A (10 W) output from 38.5–60 V PoE input. It integrates PD detection/classification circuitry, current-mode PVM controller, input diode bridges for data/spare pair support, transient suppressor, and EMI filtering-designed for compact remote IP appliances such as security cameras and wireless access points.

For engineers reviewing the SPDCPOE05 datasheet, SPDCPOE05 pinout, SPDCPOE05 application, or SPDCPOE05 equivalent, key selection criteria include its Class 0 compliance, 1500 VDC input/output isolation, ±5% output regulation under transient load steps, -40°C to +70°C operating range, and vertical through-hole mechanical footprint (86 × 24.2 × 17 mm).

Technical Context

The SPDCPOE05 implements full IEEE 802.3af PD functionality-including signature detection (25 kΩ), classification (Class 0, 0–12.96 W), and power extraction-using integrated ST silicon. Its DC-DC stage employs current-mode pulse-width modulation with soft-start and short-circuit protection.

Input interface supports both Mode A (data pairs) and Mode B (spare pairs) via internal diode bridges; output maintains SELV limits and includes ±5% ripple (1% RMS) and ±5% transient response from ½-load to full-load transitions.

Key Specifications

Pinout & Package

Vertical through-hole (THT) package measuring 86 × 24.2 × 17 mm, RoHS-compliant and UL 94V-0 rated.

Key Features

Applications

Availability

SPDCPOE05 is available at Aetrix Electronics and suitable for security systems, wireless access points, and environmental monitoring equipment requiring stable component supply and legacy PoE compatibility.

Supply support for SPDCPOE05 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader designing and manufacturing microcontrollers, power ICs, sensors, and analog components for industrial, automotive, and consumer applications.

The SPDCPOE05 belongs to ST's PoE powered device module family, engineered to simplify IEEE 802.3af-compliant remote power delivery for space-constrained, low-power edge devices.

FAQ

Does SPDCPOE05 support IEEE 802.3at (PoE+) or higher standards?

No. SPDCPOE05 is strictly IEEE 802.3af compliant and rated for Class 0 (up to 12.96 W input). It lacks the higher-power detection signatures, extended classification, and thermal design required for 802.3at (PoE+) or 802.3bt. Use only with 802.3af-compliant PSEs.

Can SPDCPOE05 be used with both Mode A and Mode B PoE configurations?

Yes. Internal diode bridges enable automatic polarity correction and support both Mode A (power on data pairs) and Mode B (power on spare pairs). No external configuration or jumpering is required-the module accepts power from either standard Ethernet pair arrangement.

What is the purpose of the n.c. pins on connector J2?

J2 pins 4, 5, 7, and 8 are marked "n.c." (no connect) and left unconnected internally. They provide mechanical stability and standardized footprint compatibility but carry no electrical function-ensuring interoperability with common RJ45-based PCB layouts and housing designs.

Is SPDCPOE05 still in production or considered obsolete?

Per ST's official documentation, SPDCPOE05 is marked "Obsolete Product(s)" in the revision history and header notes. It was released in March 2009 as preliminary data and has since been discontinued. Aetrix Electronics offers limited legacy stock with full traceability and technical support for ongoing maintenance programs.