Surface mount current sensor AKM CZ3A05 with continuous 50Arms current rating and analog voltage output
Product Overview
The CZ-3A05 is an open-type current sensor utilizing Hall sensors to provide an analog voltage output proportional to AC/DC current. It features a coreless, ultra-small surface mount package for space-saving designs and high-accuracy, high-speed current sensing thanks to its Group III-V semiconductor thin film Hall sensor. The sensor boasts low primary conductor resistance, enabling a continuous current rating of 50Arms with suppressed heat generation. It incorporates a built-in stray magnetic field reduction function to mitigate accuracy degradation from disturbed magnetic fields and a dual overcurrent detection function. The CZ-3A05 series is UL 61800-5-1 safety compliant, making it ideal for industrial AC drives, servo motors, and applications requiring input to a 3.3V AD converter. The series offers a wide range of linear measurement capabilities across different models, allowing for consistent board designs.
Product Attributes
- Brand: Asahi Kasei Microdevices (AKM)
- Safety Standard Compliance: UL 61800-5-1, UL-1577, IEC/UL 60950-1
- Package Type: Coreless ultra-small surface mount package
- Material: Group III-V semiconductor thin film (Hall sensor)
- Output Type: 3.3V Output, Analog Voltage
- RoHS Compliant: Yes (implied by material and general industry standards, though not explicitly stated for the product itself)
Technical Specifications
| Specification | Value | Unit | Notes |
|---|---|---|---|
| Model | CZ-3A05 | ||
| Maximum Primary Current (RMS) | 50 | Arms | Continuous |
| High-accuracy | 0.4 | %F.S. | Typ. (Ta=3585C) |
| Primary Conductor Resistance | 0.27 | m | Typ. |
| Package Size | 12.7 x 10.9 x 2.25 | mm | |
| Isolation Voltage | 4.2 | kVrms | AC50Hz, 60s |
| Supply Voltage (VDD) | 3.0 - 3.3 - 3.6 | V | Recommended Operating Conditions |
| Zero-Current Output Voltage (Vof) | 1.64 - 1.65 - 1.66 | V | Typ. |
| Linear Sensing Range | 64.5 | A | |
| Rise Response Time (tr) | 1 | s | Typ. |
| Fall Response Time (tf) | 1 | s | Typ. |
| Overcurrent Detection Threshold 1 Adjustable Range | 29.2 - 72.9 | A | Absolute value |
| Overcurrent Detection Threshold 2 Adjustable Range | 73.0 - 145.8 | A | Absolute value |
| Temperature Drift of Sensitivity | 0.4 - 0.6 | % | Typ. (Ta=3585C) |
| Total Accuracy | 0.2 - 0.4 | %F.S. | Typ. (Ta=3585C) |
| Creepage distance | 8.0 | mm | |
| Clearance distance | 8.0 | mm |
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