Product Overview
The CZ-3A03 is an open-type current sensor utilizing Hall effect technology to provide an analog voltage output proportional to AC/DC current. It features a high-accuracy, high-speed sensing capability due to its Group III-V semiconductor thin film Hall sensor. The coreless, ultra-small surface mount package ensures space-saving design, while low primary conductor resistance minimizes heat generation, enabling a continuous current of 50Arms. This series incorporates a built-in stray magnetic field reduction function to mitigate accuracy degradation from disturbed magnetic fields and offers a dual overcurrent detection function with adjustable thresholds. The CZ-3A03 is UL 61800-5-1 safety compliant, making it ideal for industrial AC drives, servo motors, and applications requiring signal input to a 3.3V ADC. It offers a wide range of linear measurement capabilities, allowing for consistent board design across different current ratings.
Product Attributes
- Brand: Asahi Kasei Microdevices (AKM)
- Safety Standard Compliance: UL 61800-5-1, UL-1577, IEC/UL62368-1
- Package Type: Small-sized surface mount package
- Material: RoHS compliant, halogen-free
- Terminal Plating: Sn-Bi
- Flammability Standard: V0 (UL94)
- Comparative Tracking Index (CTI): 400V
- Material Group: II
Technical Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Model | CZ-3A03 | ||
| General Description | Open-type current sensor using Hall sensors, analog voltage output proportional to AC/DC current. | ||
| Hall Sensor Type | Group III-V semiconductor thin film | High-accuracy, high-speed sensing | |
| Maximum Primary Current (Continuous) | 50 | Arms | |
| Package Dimensions | 12.7 x 10.9 x 2.25 | mm | |
| Primary Conductor Resistance (Typ.) | 0.27 | m | |
| High-Accuracy (Typ.) | 0.3 | %F.S. | Ta=3585C |
| Isolation Voltage | 4.2 | kVrms | AC50Hz, 60s |
| Supply Voltage (VDD) | 3.0 - 3.3 - 3.6 | V | Recommended Operating Conditions |
| Output Type | 3.3V Output | Non-ratiometric | |
| Stray Magnetic Field Reduction | Built-in function | ||
| Overcurrent Detection | Dual function, adjustable thresholds | ||
| Linear Sensing Range | -22.1 to 22.1 | A | |
| Overcurrent Detection Threshold 1 Adjustable Range | 10.0 to 25.0 | A | Absolute value |
| Overcurrent Detection Threshold 2 Adjustable Range | 25.0 to 50.0 | A | Absolute value |
| Applications | AC drives, DC motors, UPS, General Inverters, Power conditioners | Also suitable for other applications requiring isolation with small size and heat suppression. | |
| Clearance/Creepage Distance | 8 | mm | Compliant with UL61800-5-1 |
2410311225_AKM-CZ3A03_C3684399.pdf
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