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7491193912

7491193912

$8.76
  • Description：XFMR POE DC/DC CONV 120UH SMD
  • Series：WE-PoE
  • Mfr：Würth Elektronik
  • Package：Tape & Reel (TR),Cut Tape (CT)

SKU:e4f1d2482b3b Category: Brand:

　　
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Product Detailed Parameters

  • Description：XFMR POE DC/DC CONV 120UH 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：1.5kVAC
  • Inductance @ Frequency：120µH @ 100kHz
  • Frequency：200 ~ 500kHz
  • Operating Temperature：-40°C ~ 125°C
  • Mounting Type：Surface Mount
  • Size / Dimension：0.689" L x 0.630" W (17.50mm x 16.00mm)
  • Height - Seated (Max)：0.327" (8.30mm)
  • Footprint：0.935" L x 0.689" W (23.74mm x 17.50mm)
  • Style：-
  • Grade：-
  • Qualification：-

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7491193912

How to buy
Online and offline orders are supported. If the item is available for online purchase, you can place it in the cart; for wholesale pricing, please contact our product manager for a quote.
Payment Method
Payment methods: T/T, WeChat Pay, credit cards, Google Pay, Apple Pay . Buyer covers shipping, fees, duties, and taxes; contact our product manager if you need a contract/procurement process.
Delivery time
In-stock items usually ship within 24 hours. Otherwise, shipment is arranged 1 to 2 days after the items arrive at our warehouse. Timing depends on destination and shipping method.
Freight calculation
Freight cost depends on destination, package size, and weight . We offer shipping options via DHL, FedEx, UPS, and TNT , and can ship using your freight account upon request.
Mode of Transportation
We ship via DHL, FedEx, UPS, and TNT. If you prefer a specific logistics provider, we can ship using your designated carrier.
Return and Refund
Returns are accepted within 60 days of invoice with RMA approval. Items must be resalable; original invoice and test report are required. No returns for customer errors.

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Buying Guide
Summary

Würth Elektronik 7491193912 is used in Switching Converter, SMPS Transformers category when predictable switching behavior and derating under real loads are required. Key specs include Description (XFMR POE DC/DC CONV 120UH SMD), Temperature (-40°C ~ 125°C), Mounting (Surface Mount), and Packaging (Tape & Reel (TR), Cut Tape (CT)).

Selection Notes
  • For 7491193912, make sure the operating frequency (200 ~ 500kHz) fits your system clock and timing margins.
  • Verify the operating temperature range (-40°C ~ 125°C) and derate as needed in your application.
  • Confirm Footprint (0.935" L x 0.689" W (23.74mm x 17.50mm)) is suitable for your use case and operating conditions.
Alternates & Substitutions
  • For Switching Converter, SMPS Transformers, validate alternates under worst-case corners rather than assuming typical-only conditions represent production builds.
  • For any substitution, verify the datasheet conditions behind headline specs and validate the alternate under your worst-case operating corners.
  • Lock the mechanical constraints first (mounting Surface Mount, packaging Tape & Reel (TR), Cut Tape (CT)) before comparing performance specs.
  • For switching devices, derate for inrush/inductive loads and verify thermal rise at worst case.
FAQ

Who is the manufacturer of 7491193912?
Würth Elektronik

How do I choose an alternate for 7491193912?
Match footprint and ratings first, then confirm operating conditions and test conditions behind key specs before approval.

Which Applications is listed for 7491193912?
Power Over Ethernet (PoE)

What is the operating frequency of 7491193912?
200 ~ 500kHz

Application Scenarios

Würth Elektronik 7491193912 in the Switching Converter, SMPS Transformers category is typically selected when engineers need predictable, spec-driven behavior in a production design. 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. Within industrial power conversion, transformers and chokes are validated for insulation, thermal rise, and saturation margin. In telecom power modules, isolation supports stable operation and regulatory compliance across multi-board systems. In gate-drive and control circuits, pulse transformers provide robust coupling while preventing ground-loop issues.

Compatibility Advice
  • For second-source planning, confirm tolerance, drift, and temperature coefficients match the accuracy and stability the circuit actually needs. This keeps integration from depending on typical-only conditions.
  • In practice, validate derating under voltage and ripple current so passives do not run at the edge in continuous duty. This helps field behavior stay predictable across lots.
Project Fit
  • Strongest fit when you can qualify Würth Elektronik 7491193912 for Switching Converter, SMPS Transformers integration in the final enclosure, typically when you can validate bounce behavior, actuation force, and failure modes with production-like fixtures.
  • Usually not a good fit when integrating Würth Elektronik 7491193912 for Switching Converter, SMPS Transformers, isolation and mechanical spacing cannot be guaranteed in the final design, increasing compliance risk, because it becomes difficult to prove margin across production variance.
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