ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：XFMR POE DC/DC CONV 400UH SMD
- Series：WE-PoE
- Mfr：Würth Elektronik
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：For DC/DC Converters
- Applications：Power Over Ethernet (PoE)
- Intended Chipset：LM5070, LM5071, LM5072, LTC4267, TPS23750, TPS23770
- Chipset Manufacturer：Linear Technology, Texas Instruments
- Voltage - Primary：36 ~ 57V
- Voltage - Auxiliary：-
- Voltage - Isolation：1500Vrms
- Inductance @ Frequency：400µH @ 100kHz
- Frequency：200 ~ 500kHz
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Size / Dimension：0.508" L x 0.362" W (12.90mm x 9.20mm)
- Height - Seated (Max)：0.244" (6.20mm)
- Footprint：0.508" L x 0.559" W (12.90mm x 14.20mm)
- Style：-
- Grade：-
- Qualification：-
Download product information
Overview
The Würth Elektronik 749119133 is a surface-mount power transformer designed for Power over Ethernet (PoE) applications. It features a WE-PoE series construction with a primary voltage rating of 36V to 57V and a secondary voltage of 3.3V. The component provides 1500Vrms isolation and operates within a frequency range of 200kHz to 500kHz. It has an inductance of 400µH at 100kHz and supports chipsets such as LM5070, LTC4267, and TPS23750. The physical dimensions are 12.90mm x 9.20mm with a maximum height of 6.20mm.
Feature Summary
- Provides galvanic isolation for PoE DC/DC converter circuits
- Supports high-frequency operation suitable for switch-mode power supplies
- Compatible with standard PoE controller architectures
Applications
- Power over Ethernet (PoE) systems
- DC/DC converter modules
- Switching Mode Power Supply (SMPS) transformers
Procurement Notes
Verify the specific ordering suffix matches the required tape-and-reel packaging configuration. Confirm that the selected variant aligns with the intended controller chipset compatibility list. Ensure the surface-mount footprint dimensions correspond to the design layout requirements. Check for any recent product change notifications regarding material or assembly updates.
Selection Notes
Select this component when designing PoE interfaces requiring 1500Vrms isolation and compact surface-mount integration. It is suitable for applications utilizing controllers like LM5071 or TPS23770. Consider the operating temperature range and frequency specifications to ensure compatibility with the target switching regulator topology.
Part Context
This part belongs to the Würth Elektronik WE-PoE series, which specializes in transformers for Ethernet power delivery. The series addresses the need for efficient power transfer alongside data transmission in networked devices. It serves as a critical interface between the Ethernet PHY and the power conversion stage.
Replacement Considerations
No public confirmed substitute part numbers are available.
