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Product Detailed Parameters
- Description：XFMR POE DC/DC CONV 42UH 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：-
- Chipset Manufacturer：-
- Voltage - Primary：36 ~ 72V
- Voltage - Auxiliary：12V
- Voltage - Isolation：1500Vrms
- Inductance @ Frequency：42µH @ 100kHz
- Frequency：-
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Size / Dimension：0.910" L x 1.044" W (23.11mm x 26.52mm)
- Height - Seated (Max)：0.450" (11.43mm)
- Footprint：0.910" L x 1.145" W (23.11mm x 29.08mm)
- Style：-
- Grade：-
- Qualification：-
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Overview
The Würth Elektronik 7491194501 is a Power over Ethernet (PoE) transformer designed for DC/DC converter applications within the WE-PoE+ series. It features surface mount installation with dimensions of 23.11mm length, 29.08mm width, and 11.43mm height. The component operates with a primary voltage range of 36V to 72V and provides 1500Vrms isolation. Key electrical parameters include an inductance of 42µH at 100kHz and a secondary voltage rating of 5V.
Feature Summary
- Integrated magnetic solution optimized for PoE power delivery systems
- High isolation voltage capability for safety compliance
- Compact surface mount footprint for automated assembly
Applications
- Power over Ethernet (PoE) powered devices
- DC/DC converter input stages
- Switching Mode Power Supply (SMPS) designs
Procurement Notes
Verify the specific manufacturer part number against official Wurth Elektronik documentation to ensure correct revision level. Confirm that the required isolation voltage and inductance values match the design specifications before procurement. Check for any recent product change notifications or datasheet updates that may affect mechanical or electrical characteristics.
Selection Notes
Select this component when a dedicated PoE transformer is required for DC/DC conversion topologies. Ensure the operating temperature range of -40°C to 125°C meets the environmental requirements. Verify that the physical package dimensions fit within the available PCB area and that the mounting style aligns with the manufacturing process capabilities.
Part Context
This component belongs to the WE-PoE+ series from Würth Elektronik, which focuses on integrated magnetics for Ethernet power applications. The series provides solutions that combine transformer functionality with necessary circuit protection elements, simplifying the design process for networked power systems.
Replacement Considerations
Consult the official Wurth Elektronik cross-reference guide for verified substitute part numbers. Do not assume functional equivalence with other manufacturers' components without validating all electrical and mechanical parameters against the original datasheet.
