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Product Detailed Parameters
- Description：CURR SENSE XFMR 1:125 10A SMD
- Series：-
- Mfr：Triad Magnetics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Frequency Range：250kHz Min
- Type：Invasive
- Inductance：3 mH
- ET (Volt-Time)：-
- Current Ratio：-
- DC Resistance (DCR)：8.5Ohm Secondary
- Ratings：-
- Mounting Type：Surface Mount
- Size / Dimension：0.272" L x 0.303" W (6.90mm x 7.70mm)
- Height - Seated (Max)：0.210" (5.33mm)
- Termination Style：Gull Wing
- Turns Ratio - Primary:Secondary：0.128472222
- Current Rating (Amps)：10:00 AM
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Overview
The CSE5-101251 is a surface-mount current sense transformer manufactured by Triad Magnetics. It features an EE5 core design with a turns ratio of 1:125 and a minimum inductance of 3 mH. The component supports a primary current rating of 10 A and operates optimally at frequencies of 250 kHz and above. Secondary DC resistance is specified at 8.5 milliohms maximum. Physical dimensions are 6.90 mm in length, 7.70 mm in width, and a maximum height of 5.33 mm.
Feature Summary
- Surface mount construction utilizing an EE5 core design for compact integration
- Optimized performance characteristics for switching frequencies starting at 250 kHz
- High primary current handling capability rated at 10 amperes
Applications
- Switch-mode power supply current sensing
- Overcurrent protection circuits
- Industrial power monitoring systems
Procurement Notes
Verify the secondary DC resistance specification against official datasheets, as sources vary between 7.7 ohms and 8.5 milliohms. Confirm the package variant matches the required鸥翼 (gull-wing) termination style. Ensure the operating frequency aligns with the 250 kHz minimum requirement for optimal transformer performance.
Selection Notes
Select this component when a low-profile surface-mount solution is required for high-frequency current sensing applications. The 1:125 turns ratio provides appropriate signal scaling for downstream processing. Verify that the PCB footprint accommodates the 6.90 mm by 7.70 mm body size and the 5.33 mm maximum height constraint.
Part Context
This part belongs to the CSE5 series of current sense transformers from Triad Magnetics. These components are designed for board-mount applications requiring precise current monitoring in electronic circuits. The series offers various inductance and turns ratio options to suit different power management architectures.
Replacement Considerations
Consult manufacturer documentation for direct equivalents within the CSE5 family. Verify pin compatibility and electrical parameters before substituting with other manufacturers' current sense transformers.
