B78419A2290A003

$4.88

Description：CURR SENSE XFMR 1:125 SMD
Series：B78419
Mfr：EPCOS - TDK Electronics
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:64d6293ba2c7 Category: Current Sense Transformers Brand: EPCOS - TDK Electronics

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Product introduction

B78419A2290A003 is listed in the Current Sense Transformers range at ChipApex. The manufacturer field lists EPCOS - TDK Electronics. Its product description is CURR SENSE XFMR 1:125 SMD. Review the specifications below when checking this part for your BOM.

Current Sense Transformers specifications for B78419A2290A003

Description：CURR SENSE XFMR 1:125 SMD
Series：B78419
Mfr：EPCOS - TDK Electronics
Package：Tape & Reel (TR),Cut Tape (CT)
Frequency Range：50kHz ~ 250kHz
Type：Invasive
Inductance：11 mH
ET (Volt-Time)：-
Current Ratio：-
DC Resistance (DCR)：0.5mOhm Primary, 4Ohm Secondary
Ratings：-
Mounting Type：Surface Mount
Size / Dimension：0.504" L x 0.535" W (12.80mm x 13.60mm)
Height - Seated (Max)：0.567" (14.40mm)
Termination Style：Gull Wing
Turns Ratio - Primary:Secondary：0.128472222
Current Rating (Amps)：-

Current Sense Transformers datasheet and documents for B78419A2290A003

B78419A2290A003

Current Sense Transformers Overview

The B78419A2290A003 is a surface mount current sense transformer manufactured by EPCOS - TDK Electronics. It features a primary-to-secondary turns ratio of 1:125 and operates within a frequency range of 50kHz to 250kHz. The component has a maximum DC resistance of 0.5 milliohms on the primary side and 2.1 ohms on the secondary side, with an inductance of 3 mH.

Current Sense Transformers Feature Summary

Provides precise current sensing through a defined 1:125 turns ratio
Optimized for high-frequency operation between 50kHz and 250kHz
Designed for surface mount integration into compact circuits

Current Sense Transformers Applications

High-power motor control cabinets
Switching power supply current monitoring
Industrial drive systems requiring stable switching characteristics

Current Sense Transformers Procurement Notes

Verify that the specific part number matches the required 1:125 turns ratio and SMD package dimensions. Confirm compliance with RoHS3 specifications and REACH status prior to ordering. Ensure the supplier provides official documentation from TDK Electronics or authorized distributors to guarantee authenticity and traceability.

Current Sense Transformers Selection Notes

Select this component when a 1:125 transformation ratio is necessary for accurate current measurement in high-frequency environments. Consider the 3 mH inductance and low primary DC resistance for minimal signal loss. Evaluate thermal behavior and mounting constraints for integration into dense PCB layouts.

Current Sense Transformers Part Context

This component belongs to the B78419 series of SMT current sense transformers. EPCOS products are integrated into the TDK Corporation portfolio, combining passive component expertise with advanced electronic solutions. The series supports various turns ratios for diverse sensing applications.