PDS-408G/AC-EU - 480W 8-Port 802.3bt PoE Switch | Microchip
MPN： PDS-408G/AC-EU ✓ 啟用中PDS-408G/AC-EU 概覽
A Power over Ethernet (PoE) switch is a type of network switch that delivers both data and electrical power over standard Ethernet cabling (Cat5e/Cat6) to powered devices (PDs) such as lighting fixtures, wireless access points, and IP cameras. Within the system hierarchy, it sits in the network infrastructure layer, combining Ethernet switching silicon with PoE power sourcing equipment (PSE) controllers, an AC-DC power stage, and management firmware.
Key features include the 480W power budget, automatic PoE power allocation based on the detected PD device class, full 802.3bt (PoH-class) compatibility, fan-less silent operation, and remote management capability. The 8+3 port configuration provides eight PoE-enabled downlinks plus three uplink ports for aggregation to the network core.
Architecturally, the PDS-408G integrates Microchip PoE PSE technology with a managed switch fabric, supporting VLAN, link aggregation, and remote monitoring per the product documentation. Automatic per-port class-based power negotiation ensures each PD receives only the power it requires, maximizing the usable port count on a fixed 480W budget.
Typical applications include digital ceiling PoE lighting, PoE-powered wireless access points, IP surveillance cameras, and building automation endpoints where a single Category cable must supply both connectivity and up to 90W per device.
When designing an installation, confirm that aggregate PD demand stays within the 480W budget and that cable lengths comply with the 100 m Ethernet channel limit to maintain both data integrity and PoE voltage drop margins.
This page synthesizes distributor availability data, drop-in regional variants, and practical deployment notes not found in the manufacturer datasheet.
直接替換替代品，適用於 PDS-408G/AC-EU — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： PDS-408G/AC-EU （相同外形與佔位） — 差異在於 Cooling, Product Type, PoE Standard, Management, Input Power.
PDS-408G/AC
✅ 直接替換聯絡詢價
查看資料表 →PDS-408G/AC-US
✅ 直接替換聯絡詢價
查看資料表 →PDS-408G/AC-UK
✅ 直接替換聯絡詢價
查看資料表 →PDS-408G/AC-AU
✅ 直接替換📋 參考替代品（不在目錄中）
PDS-408G/F/AC-EU
✅ 直接替換📋 參考替代品（不在目錄中）
PDS-408G/AC-EU 規格（製造商公布）
| Product Type | Managed PoE Network Switch |
| Total Ports | 11 (8 + 3) |
| PoE Ports | 8 |
| Uplink Ports | 3 |
| Total PoE Power Budget | 480 W |
| Maximum Per-Port PoE Power | 90 W |
| Simultaneous Full-Power Mode | 60 W on all 8 ports |
| PoE Standard | IEEE 802.3bt-compliant |
| Management | Managed (VLAN, link aggregation, remote management) |
| PoE Power Allocation | Automatic, based on PD device class |
| Cooling | Fan-less |
| Input Power | AC with EU power cord |
| Deployment | Digital ceiling / communications room |
| Target Applications | PoE lighting, digital ceiling |
| Data Sheets Series | PDS-408G/F/M/AC variants (US/EU/UK/AU plugs) |
PDS-408G/AC-EU 介面與連接器
PDS-408G/AC-EU 依製造商公布提供以下介面與連接器：功率輸入。擴充排針腳位、連接器腳位編號與電氣限制均定義於製造商文件中。
| 功率輸入 | 8 |
請參閱 製造商文件 以取得完整的擴充排針腳位定義與連接器腳位編號。
功率與熱特性
| 功率輸入 | 8 |
| 散熱 | Fan-less |
PDS-408G/AC-EU 由製造商公布的功率輸入與熱參數。
典型應用
PDS-408G/AC-EU 適用於 6 應用s: Digital Ceiling PoE Lighting, PoE Wireless Access Point Deployment, IP Surveillance Camera Networks, Building Automation and BMS Endpoints, Conference Room and Smart Office AV, Industrial Communications Rooms.
Digital Ceiling PoE Lighting
The PDS-408G/AC-EU is purpose-built for PoE lighting in digital ceiling architectures. Its IEEE 802.3bt compliance and 90W per-port capability cover high-output LED luminaires, while the 60W full-power mode sustains eight typical fixtures simultaneously within the 480W budget. Class-based automatic power allocation ensures each fixture draws only what it needs, leaving headroom for additional endpoints. Mounted directly in the ceiling plenum thanks to its fan-less, silent design, the switch shortens cable runs to luminaires, reducing installation cost versus centralized wiring closets. Because data and power share one Category cable, fixtures become individually addressable network nodes, enabling per-fixture dimming, occupancy-linked control, and centralized monitoring without dedicated power circuits.
推薦
PoE Wireless Access Point Deployment
Modern 802.11ax/be wireless access points commonly require 30W to 90W, which the PDS-408G/AC-EU delivers per port via IEEE 802.3bt. With 8 PoE ports and a 480W budget, a single ceiling unit can power multiple access points with 60W guaranteed on all ports simultaneously, and 90W reserved for the highest-class APs. Class-based power negotiation means the switch automatically reserves only each AP's declared class power. Placing the switch near the APs shortens the Ethernet runs, preserving PoE voltage margins over the 100 m channel limit. Managed features such as VLANs let administrators isolate SSID backhaul traffic from other building systems on the same switch.
推薦
IP Surveillance Camera Networks
IP cameras, PTZ domes with heaters, and video analytics cameras draw from 13W (802.3af) up to 90W (802.3bt Class 8). The PDS-408G/AC-EU serves mixed camera fleets on one 8-port switch: its automatic class-based allocation reserves each camera's declared power from the 480W budget, while the 90W per-port maximum covers PTZ units with infrared illuminators and wipers. The 3 uplink ports allow video aggregation back to the NVR core with redundancy options via link aggregation. Fan-less operation suits discreet ceiling installs in retail, office, or healthcare spaces, and remote management lets security teams verify per-port power delivery status without site visits.
推薦
Building Automation and BMS Endpoints
Building automation endpoints - occupancy sensors, controllers, actuators, and room controllers - increasingly run on PoE to avoid electrician-dependent power drops. The PDS-408G/AC-EU provides 8 PoE ports plus 3 uplinks, letting a single ceiling-mounted unit serve a floor zone of sensors and controllers with data and power over existing Category cabling. Its managed VLAN support isolates BMS traffic from IT networks, a common requirement in facility integration contracts, while link aggregation supports resilient uplinks. With a 480W budget and class-based allocation, the switch accommodates heterogeneous endpoint draws without manual power planning, and its silent fan-less design permits placement in occupied plenum spaces.
推薦
Conference Room and Smart Office AV
Conference rooms concentrate PoE-hungry endpoints: video bars, touch controllers, room schedulers, displays, and lighting scenes. The PDS-408G/AC-EU's 90W per port covers IEEE 802.3bt Class 8 devices such as large video bars and displays, while 60W on all 8 ports sustains a fully populated room. Its fan-less chassis is critical here - audible fan noise is unacceptable in meeting spaces. The 3 uplink ports provide redundant or segregated connectivity to the office network and AV control VLANs. Managed features allow IT to prioritize AV traffic with QoS-style configurations and monitor power draw per endpoint for capacity planning across multiple rooms.
推薦
Industrial Communications Rooms
Mouser classifies the PDS-408G/AC-EU as an industrial 8-port PoE switch, and its communications-room deployment profile fits equipment rooms, IDFs, and MEP spaces where luminaires, APs, and cameras converge. The AC input with EU cord connects directly to mains power, eliminating external power bricks, and the 480W fan-less power stage operates without filtered-air requirements. Eight PoE downlinks serve locally distributed endpoints while the 3 uplinks tie back to the core switch. Class-based power allocation simplifies mixed-load management, and remote management enables monitoring from a central NOC. Regional cord variants (US/UK/AU) allow standardized global deployments with a single hardware BOM.
推薦
推薦產品摘要
工程參考資料，適用於 PDS-408G/AC-EU — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | PDS-408G/AC | PDS-408G/AC-US | PDS-408G/AC-UK | PDS-408G/AC-AU |
|---|---|---|---|---|---|
| Package / Form Factor | Fan-less 8+3 port PoE switch chassis, ceiling-mount | Identical chassis | Identical chassis | Identical chassis | Identical chassis |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Total PoE Power Budget | 480 W | 480 W | 480 W | 480 W | 480 W |
| Max Per-Port Power | 90 W | 90 W | 90 W | 90 W | 90 W |
| PoE Standard | IEEE 802.3bt-compliant | IEEE 802.3bt-compliant | IEEE 802.3bt-compliant | IEEE 802.3bt-compliant | IEEE 802.3bt-compliant |
| Port Configuration | 8 PoE + 3 uplink (11 ports) | 8 PoE + 3 uplink | 8 PoE + 3 uplink | 8 PoE + 3 uplink | 8 PoE + 3 uplink |
| Power Cord | EU plug AC cord | AC input, no regional cord specified | US plug AC cord | UK plug AC cord | AU plug AC cord |
| Cooling | Fan-less | Fan-less | Fan-less | Fan-less | Fan-less |
| Management | Managed (VLAN, link aggregation, remote management) | Managed | Managed | Managed | Managed |
主要差異化特點
- 90W per-port headroom within a fan-less 480W chassis (對比PDS-408G/AC)
- Simultaneous full-power operation on all ports (對比Generic lower-budget PoE switches)
- Global variant coverage on one hardware platform (對比PDS-408G/AC-US)
設計說明
Budget PoE demand against the 480W ceiling. In full-power mode the switch supplies 60W on all 8 ports simultaneously (480W total), but a single port can reach 90W under IEEE 802.3bt. If several 90W-class PDs are connected, the class-based allocation may refuse or derate power on later-detected devices. Inventory the declared 802.3bt class of every PD before finalizing port assignments, and reserve the highest-class loads for ports detected first or spread them to avoid lockout.
The PDS-408G is fan-less, dissipating up to 480W of delivered PoE power passively through its enclosure. Estimated: at full PoE delivery with typical AC-DC efficiency losses, the chassis rejects tens of watts of heat into the ceiling plenum. Do not install the unit in a sealed box or wrap it in insulation; maintain free air volume around the enclosure per the manufacturer installation manual, and verify ambient temperature in enclosed ceilings during summer peak conditions.
Ordering the wrong regional suffix is the most common procurement error: the /AC-EU ships with an EU cord, while /AC-US, /AC-UK, and /AC-AU ship with US, UK, and AU cords respectively per the Microchip ordering table. Also, do not exceed the 100 m Ethernet channel to PDs - long runs increase DC resistance and erode the PoE voltage budget, which can cause 90W-class devices to negotiate down to lower power classes.
合規資訊
The Scribd datasheet summary mentions compliance with multiple safety and regulatory standards, but specific RoHS/REACH/CE declarations for PDS-408G/AC-EU were not captured in the verified data. Consult the manufacturer datasheet DS00003432 for formal compliance statements.