Product Overview
The CZ-3A02 is an open-type current sensor utilizing advanced Hall sensors for high-accuracy, high-speed AC/DC current measurement. Its coreless, ultra-small surface mount package ensures space-saving, while low primary conductor resistance minimizes heat generation, enabling a continuous 50Arms current rating. The integrated stray magnetic field reduction function mitigates accuracy degradation from disturbed magnetic fields. Featuring a dual overcurrent detection function with adjustable thresholds, the CZ-3A02 is UL 61800-5-1 safety compliant, making it ideal for industrial AC drives, servo motors, and applications requiring isolation with small size and low heat generation. It is also well-suited for interfacing with 3.3V AD converters.
Product Attributes
- Brand: Asahi Kasei Microdevices (AKM)
- Certifications: UL 61800-5-1, UL-1577, IEC/UL 62368-1
- Package Type: Coreless ultra-small surface mount
- Safety Compliance: UL 61800-5-1 (Clearance, Creepage distance 8.0mm)
- Material: Group III-V semiconductor thin film (Hall sensor)
- Lead Finish: Sn-Bi (Pb-free)
Technical Specifications
| Parameter | Symbol | Conditions | Min. | Typ. | Max. | Units | Notes |
|---|---|---|---|---|---|---|---|
| Supply Voltage | VDD | 3.0 | 3.3 | 3.6 | V | VDD pin | |
| Maximum Primary Current (RMS) | IRMSmax | 50 | Arms | Continuous DC value or RMS value | |||
| High-accuracy | Etotal | Ta=3585C | 0.3 | 0.6 | %F.S. | Total Accuracy | |
| Primary Conductor Resistance | RP | 0.27 | m | Typ. | |||
| Package Dimensions | 12.710.92.25 | mm | Small-sized surface mount package | ||||
| Isolation Voltage | VINS | AC50Hz, 60s | 4.2 | kVrms | |||
| Zero-Current Output Voltage | Vof | IIN0A | 1.64 | 1.65 | 1.66 | V | |
| Sensitivity | Vh | IIN=10A | 100 | mV/A | Vh=(VOUT)/1A | ||
| Linear Sensing Range | INS | -15.5 | 15.5 | A | |||
| Overcurrent Detection Threshold 1 Adjustable Range | |IOCDTH1| | 7.0 | 17.5 | A | |||
| Overcurrent Detection Threshold 2 Adjustable Range | |IOCDTH2| | 17.5 | 35.0 | A | |||
| Temperature Drift of Sensitivity | Vh-d | Ta=3585C | 0.6 | 0.8 | % | ||
| Temperature Drift of Zero-current Output | Vof-d | Ta=3585C, IIN=0A | 1.0 | 3.0 | mV | ||
| Creepage distance | Cr | 8.0 | mm | ||||
| Clearance distance | Cl | 8.0 | mm |
Applications
- AC drives
- DC motors
- UPS
- General Inverters
- Power conditioners
2506301205_AKM-CZ3A02_C3684297.pdf
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