749252020

$2.11

Description：CURR SENSE XFMR 1:20 7A SMD
Series：WE-CST
Mfr：Würth Elektronik
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:1aa6670395de Category: Current Sense Transformers Brand: Würth Elektronik

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Product introduction

749252020 is listed in the Current Sense Transformers range at ChipApex. The manufacturer field lists Würth Elektronik. Its product description is CURR SENSE XFMR 1:20 7A SMD. Review the specifications below when checking this part for your BOM.

Current Sense Transformers specifications for 749252020

Description：CURR SENSE XFMR 1:20 7A SMD
Series：WE-CST
Mfr：Würth Elektronik
Package：Tape & Reel (TR),Cut Tape (CT)
Frequency Range：1MHz
Type：Invasive
Inductance：33 µH
ET (Volt-Time)：9VµS
Current Ratio：-
DC Resistance (DCR)：3mOhm Primary, 350mOhm Secondary
Ratings：-
Mounting Type：Surface Mount
Size / Dimension：0.185" L x 0.183" W (4.70mm x 4.65mm)
Height - Seated (Max)：0.140" (3.55mm)
Termination Style：Gull Wing
Turns Ratio - Primary:Secondary：1:20
Current Rating (Amps)：7:00 AM

Current Sense Transformers datasheet and documents for 749252020

749252020

Current Sense Transformers Overview

The Würth Elektronik 749252020 is a surface-mount current sense transformer from the WE-CST series. It features a 1:20 turns ratio and supports a primary current of 7A with a frequency range up to 1MHz. The component has a primary DC resistance of 3mOhm and a secondary DC resistance of 0.35Ohm. Inductance is specified at 33µH. The package dimensions are compact, suitable for automated assembly in power supply applications.

Current Sense Transformers Feature Summary

Surface mount construction for automated PCB assembly
High-frequency operation capability up to 1MHz
Defined magnetic coupling via 1:20 turns ratio
Low impedance design for minimal circuit insertion loss

Current Sense Transformers Applications

Current sensing in switch-mode power supplies
Primary side current monitoring in isolated converters
Overcurrent protection circuits in AC-DC adapters
Feedback loop control in offline power stages

Current Sense Transformers Procurement Notes

Verify the specific manufacturer part number against official Wurth Elektronik documentation to ensure authenticity. Confirm that the received components match the WE-CST series specifications regarding electrical parameters and physical dimensions. Check for any recent product change notices or material updates provided by the supplier prior to finalizing procurement orders.

Current Sense Transformers Selection Notes

Select this component when a high-frequency current transformer is required for primary-side sensing. Ensure the application operates within the 1MHz frequency limit and does not exceed the 7A primary current rating. Consider the surface-mount footprint compatibility with existing PCB layouts and verify that the 1:20 ratio aligns with the controller's input requirements.

Current Sense Transformers Part Context

This part belongs to the WE-CST series of current sense transformers manufactured by Wurth Elektronik. These components are designed for use in power electronics where accurate current measurement is critical for regulation and protection. The series offers various ratios and current ratings to suit different power levels.