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Product Detailed Parameters
- Description：AUDIO XFMR SMD
- Series：ESMIT
- Mfr：Sumida America Components Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Mounting Type：Surface Mount
- Size / Dimension：0.280" L x 0.205" W (7.10mm x 5.20mm)
- Height - Seated (Max)：0.138" (3.50mm)
- Termination Style：Gull Wing
- Turns Ratio - Primary:Secondary：-
- Impedance - Primary (Ohms)：-
- Impedance - Secondary (Ohms)：-
- DC Resistance (DCR) - Primary：250mOhm
- DC Resistance (DCR) - Secondary：250mOhm
- Transformer Type：-
- Frequency Range：-
- Frequency Response：-
- Voltage - Isolation：3750Vrms
- Insertion Loss：-
- Return Loss：-
- Power Level：-
- Operating Temperature：-40°C ~ 125°C
- Approval Agency：-
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Overview
The ESMIT-4180/C is a surface-mount audio and signal transformer manufactured by Sumida. It features a nominal inductance of 120 uH with a minimum of 125 uH, operating at a frequency range of 100 kHz. The component provides an insulation voltage of 3.75 kV and has a maximum DC resistance of 250 mOhms. It is housed in an SMD-4 package measuring 7.1 mm in length, 5.2 mm in width, and 3.5 mm in height. The device supports a single channel and functions within a temperature range of -40 C to +125 C.
Feature Summary
- Qualified to AEC-Q200 standards for automotive reliability
- Low profile design suitable for space-constrained applications
- High insulation voltage capability for safety isolation
Applications
- HV/EV battery management systems
- System MC33771 reference designs
- System MC33664 reference designs
Procurement Notes
Verify the specific suffix 'C' against official Sumida documentation to ensure correct specifications. Confirm that the component meets AEC-Q200 requirements if intended for automotive use. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components. Ensure the SMD-4 footprint matches the target PCB layout dimensions.
Selection Notes
Select this component when a low-profile signal transformer with high insulation voltage is required. Consider the 120 uH nominal inductance and 100 kHz frequency range for compatibility with specific circuit designs. Verify the operating temperature range of -40 C to +125 C aligns with environmental conditions. Ensure the SMD-4 package size fits within the available board space constraints.
Part Context
The ESMIT-4180/C belongs to the CBM series of pulse transformers from Sumida. It is designed for use in audio and signal transformation applications. The component is specifically referenced in Freescale HV/EV battery management reference designs involving the MC33771 and MC33664 systems. It serves as a critical isolation component in these specialized electronic architectures.
Replacement Considerations
Public confirmed substitute part numbers are not provided in the available documentation. Consult Sumida America Components Inc. directly for qualified alternatives or cross-reference options based on specific electrical and mechanical requirements.
