coreless current sensor AKM CZ3A01 with 50Arms continuous rating and compliance to UL IEC safety standards
Product Overview
The CZ-3A01 is an open-type, coreless current sensor utilizing advanced Group III-V semiconductor thin film Hall sensors for high-accuracy and high-speed AC/DC current sensing. Its ultra-small surface mount package and low primary conductor resistance (0.27m Typ.) minimize heat generation, enabling a 50Arms continuous current rating. The sensor features a built-in stray magnetic field reduction function to mitigate accuracy degradation from disturbed magnetic fields and a dual overcurrent detection function with adjustable thresholds. Compliant with UL 61800-5-1 safety standards and certified with UL-1577 and IEC/UL62368-1, the CZ-3A01 is ideal for industrial applications like AC drives, servo motors, and UPS systems, and is suitable for inputting sensor signals into 3.3V AD converters. It offers a wide range of linear measurement options, starting from 12.9A for the CZ-3A01 model, allowing for consistent board designs across different current ratings.
Product Attributes
- Brand: Asahi Kasei Microdevices Corporation (AKM)
- Safety Standard Compliance: UL 61800-5-1, UL-1577, IEC/UL62368-1
- Package Type: Small-sized surface mount package (12.7mm10.9mm2.25mm)
- Material: RoHS compliant, halogen-free
- Terminal Plating: Sn-Bi
- Flammability Standard: V0 (According to UL94)
- Comparative Tracking Index (CTI): 400V
- Material Group:
Technical Specifications
| Parameter | Symbol | Min. | Typ. | Max. | Units | Notes |
|---|---|---|---|---|---|---|
| Model | CZ-3A01 | Linear Measurement Range: 12.9A | ||||
| Maximum Primary Current (RMS) | IRMSmax | 50 | Arms | Continuous | ||
| High-accuracy (Typ.) | 0.3 | %F.S. | Ta=35~85C | |||
| Primary Conductor Resistance | RP | 0.27 | m | Typ. | ||
| Stray Magnetic Field Reduction Function | Ebc | 0.01 | A/mT | Equivalent to Zero-Current output drift | ||
| Small-sized surface mount package dimensions | 12.710.92.25 | mm | ||||
| Dual Overcurrent Detection Function | Adjustable | Overcurrent detection thresholds | ||||
| Isolation Voltage | VINS | 4.2 | kVrms | AC50Hz, 60s | ||
| Supply Voltage | VDD | 3.0 | 3.3 | 3.6 | V | |
| Sensitivity (Typ.) | Vh | 120 | mV/A | IIN=10A | ||
| Zero-Current Output Voltage (Typ.) | Vof | 1.65 | V | IIN=0A | ||
| Linear Sensing Range | INS | -12.9 | 12.9 | A | ||
| Linearity Error (Typ.) | -0.6 | 0.6 | %F.S. | IIN=10A, IOUT=2mA | ||
| Rise Response Time (Typ.) | tr | 1 | s | CLVOUT=1000pF | ||
| Fall Response Time (Typ.) | tf | 1 | s | CLVOUT=1000pF | ||
| Overcurrent Detection Threshold 1 Adjustable Range | |IOCDTH1| | 5.9 | 14.5 | A | ||
| Overcurrent Detection Threshold 2 Adjustable Range | |IOCDTH2| | 14.6 | 29.1 | A | ||
| Overcurrent Detection Response Time 1 (Typ.) | tRSOCD1 | 4.5 | 5.5 | s | ||
| Overcurrent Detection Response Time 2 (Typ.) | tRSOCD2 | 1.5 | 2.5 | s | ||
| Temperature Drift of Sensitivity (Typ.) | Vh-d | 0.6 | 0.8 | % | Ta=35~85C | |
| Total Accuracy (Typ.) | Etotal | 0.3 | 0.6 | %F.S. | Ta=35~85C |
Applications
- AC drives
- DC motors
- UPS
- General Inverters
- Power conditioners
- Other applications requiring isolation with small size and suppressed heat generation.
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