CZ-38 Series

Small-sized, High Accuracy, SMD
Coreless Current Sensor ICs
supporting operation up to 125℃

CZ-3813, CZ-3814, CZ-3815

The market has been recently demanding more small-sized systems, dustproof, and waterproof structures. Small bodies, lower heat generation and high temperature operation range is required for current sensors. 

The CZ-38 series has a miniaturized body while maintaining a low-heat generation characteristic, supporting up to 125℃ operation temperature.

It is suitable for systems having difficulty in temperature design and applications that use large current.

Applications

  • AC motors
  • DC motors
  • UPS's
  • Power conditioner (DC side)
  • Air conditioner

It is suitable for the application which requires insulation and small size with low heat generation.

Features

Supporting 125°C and 40Arms

The CZ-38 series supports up to 125 °C operation temperature by suppressing heat generation with an originally developed AKM package.
This enables 40Arms continuous current, making the CZ-38 usable even in the current range where conventional current sensors with a core are required.
Therefore, downsizing existing system is possible.

High Accuracy

The CZ-38 series is a highly accurate coreless current sensor with 0.7% F.S. (Typical).
This will contribute to improving system efficiency and precise control in a wide range of application.

Small-sized

The CZ-38 series achieves this size using a coreless structure AKM’s developed original package.
The package size is 6.7 x 8.3 x 2.0 (mm), which is about 1/20 of the volume of our conventional products.

CZ-38 Series

Lineup

CZ-38 Series

Product 
Name
Operating 
Ambient 
Temperature
(°C)
Linear 
Sensing 
Range
(A)
Sensitivity
(mV/A)
Temperature 
Drift of 
Sensitivity
(%) *1
Temperature
Drift of
Zero-current
Output
(mV)*1
Total
Accuracy
(%F.S.)
CZ-3813 -40 to 125 ±33 60 ±0.9 ±3 0.7
CZ-3814 ±50 40
CZ-3815 ±60 33

*1 It is defined as the "average value ± 1σ" of the actual measurement result (Ta = -40 to 125 °C) in a certain lot.

Certified with safety standards

Related Contents

Selection Table

Supply
Voltage
(V)
Output
Voltage
(V)
Effective
Current
(Arms)
Measurement
Range
(Apeak)
Bipolar /
Unipolar
Creepage
Clearance
(mm)
Working
Voltage *
(V)
Product Name Product Series
5.0 5.0 60 ± 5.3 to ± 180
Bipolar ≧ 8 800 CZ370x CZ37 Series
0 to 345.2 Unipolar CZ372x 
3.0 50 ± 11.6 to ± 166.6 Bipolar CZ3AGx CZ3A Series
3.3 3.3 ± 12.9 to ± 129.1 CZ3A0x
5.0 5.0 40 ± 33 to ± 60 ≧ 7.2 715 CZ381x CZ38 Series
5.0 5.0 20 ± 4.5 to ± 42 Bipolar
Unipolar
≧ 5 500 CQ330x CQ3 Series
3.3 3.3 ± 8.5 to ± 44 CQ320x
5.0 5.0 ± 10.7 to ± 42 AK310x AK31 Series

* Pollution Degree II with reinforced insulation