749119450

749119450

$4.60
  • Description:XFMR POE DC/DC CONV 65UH SMD
  • Series:WE-PoE+
  • Mfr:Würth Elektronik
  • Package:Tape & Reel (TR),Cut Tape (CT)

SKU:3885abd73561 Category: Brand:

  
  • Quantity
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Product Detailed Parameters

  • Description:XFMR POE DC/DC CONV 65UH 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:15V @ 20mA
  • Voltage - Isolation:1500Vrms
  • Inductance @ Frequency:65µH @ 100kHz
  • Frequency:250 ~ 400kHz
  • Operating Temperature:-40°C ~ 125°C
  • Mounting Type:Surface Mount
  • Size / Dimension:-
  • Height - Seated (Max):0.455" (11.56mm)
  • Footprint:0.910" L x 1.145" W (23.11mm x 29.08mm)
  • Style:-
  • Grade:-
  • Qualification:-

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749119450

Buying Guide
Summary

Würth Elektronik 749119450 is evaluated in Switching Converter, SMPS Transformers category where failure modes and qualification evidence matter as much as headline ratings. Key specs include Description (XFMR POE DC/DC CONV 65UH SMD), Temperature (-40°C ~ 125°C), Mounting (Surface Mount), and Packaging (Tape & Reel (TR), Cut Tape (CT)).

Selection Notes
  • For 749119450, make sure your rails cover (36 ~ 72V) across temperature and load, with adequate margin.
  • Make sure the operating frequency (250 ~ 400kHz) fits your system clock and timing margins.
  • Verify the operating temperature range (-40°C ~ 125°C) and derate as needed in your application.
Alternates & Substitutions
  • For Switching Converter, SMPS Transformers, compare the datasheet test conditions behind key specs and re-check the margins that were tightest during bring-up.
  • Treat substitutions as a validation task: check limits, then re-test the assumptions that mattered in your bring-up.
  • Check that supply 36 ~ 72V, temperature -40°C ~ 125°C matches your system, then validate at corners instead of relying on typical values.
  • For switching devices, derate for inrush/inductive loads and verify thermal rise at worst case.
FAQ

What details help you quote 749119450 quickly?
Provide the part number (749119450), quantity, required lead time, and any packaging or documentation requirements.

Who is the manufacturer of 749119450?
Würth Elektronik

What is the supply current of 749119450?
15V @ 20mA

Which packaging option is listed for 749119450?
Tape & Reel (TR), Cut Tape (CT)

Application Scenarios

In the Switching Converter, SMPS Transformers category, Würth Elektronik 749119450 is often evaluated by how well it fits electrical, thermal, and mechanical constraints in the target system. A properly designed transformer stage improves safety, efficiency, and predictable field performance. They provide magnetic coupling for isolation, impedance transformation, and efficient energy transfer in power or signal applications. In industrial power conversion, transformers and chokes are validated for insulation, thermal rise, and saturation margin. In measurement systems, current-sense and pulse transformers enable clean transmission under high dv/dt switching conditions. In telecom power modules, isolation supports stable operation and regulatory compliance across multi-board systems. With interfaces and limits agreed, the next step is proving measured behavior on the real PCB and harness. The payoff is a system that is easier to qualify and less sensitive to small process and layout differences.

Compatibility Advice
  • For Switching Converter, SMPS Transformers compatibility, confirm tolerance, derating, ESR or impedance versus frequency, and thermal rise on the assembled PCB. This keeps acceptance criteria measurable and repeatable.
Project Fit
  • Not ideal when integrating Würth Elektronik 749119450 for Switching Converter, SMPS Transformers, leakage and coupling effects are not measured, leaving ringing and EMI risk open, because the integration depends on constraints that cannot be controlled across builds.
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$4.60
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