Important notices for linear Hall ICs and current sensors

Withstand voltage

1. Please use sensors within the maximum rating and under the recommended operating conditions. Sensors can be destroyed if they are used over the maximum rating. In particular, please take care to avoid applying high voltage directly on the element.

2. Sensors have a polarity on the package pins. Please take care to avoid reverse connection.

3. Please take measures to protect against surge voltage and static charges in storage, handling, and mounting on a circuit.

4. Use sensors in a manner that does not allow sensors to touch the moving materials such as motors.


Soldering conditions

Although the reference conditions are shown as follows, please apply them only after careful examination and confirmation by the customer.

1.  Dipping (dipping entire element)
      When dipping is employed, processing in the condition within the temperature load shown in Figure 1 is recommended.
      Solder dipping should only be performed once. 
      For CQ-Series, take care to avoid dipping a magnetic core.  
2.   Hand soldering (using soldering iron)
      Solder under thermal load at 260°C for less than 10 seconds, or 350°C for less than 3 seconds, without touching the body of the element.
      Hand soldering should be completed twice.
3.   Reflow
      When reflow is employed, processing within the temperature profile shown in Figure 2 is recommended.
       Reflow soldering should be completed twice.
4.    Solder flux
       Colophonium system solder flux is recommended.
       Use of an organic acid system, inorganic acid system or water-soluble fluxes should be avoided.
  Figure 1: Solder dipping condition                            Figure 2: Solder reflow condition

Please follow the procedure below when cleaning solder flux etc.

1. Cleaning agent                                            ... Ethanol and isopropyl alcohol
2. Temperature                                                ... 50°C or less
3. When ultrasonic cleaning is employed  ... Frequency: 45 kHz or less,
                                                                                Power output: 40 W/liter or less


Notices regarding storage environment

Please avoid direct sunlight when the products are stored, and keep them at normal room temperature and humidity as far as possible.
(Preferable storage condition is 5°C to 35°C and 40% to 85% RH.)


Notices for long-term storage

If the elements are stored for an extended time (two years or more) under the general storage conditions for semiconductors, the soldering characteristics of the lead terminal and the electrical characteristics could deteriorate; therefore, only use such elements after verifying their soldering and electrical characteristics, etc..
We recommend long-term storage in a nitrogen atmosphere.
The lead of the element will be oxidized by the oxygen in the atmosphere, and the soldering characteristics will deteriorate if the elements are stored in a normal atmosphere.

Precautions for handling and disposal

As Hall ICs and current sensors contain gallium arsenide or indium arsenide, observe the following procedures for safety.

1)  Handling of Hall ICs and current sensors

-  Do not alter the form of this product into a gas, powder, liquid, through burning, crushing, or chemical processing.

-  These products should not be used under the environment with corrosive gas including chlorine or sulfur.

-  These products are lead (Pb) free. All leads are plated with 100% tin. Do not store this product alone in high temperature and high humidity environment. Moreover, this product should be mounted on substrate within six months after delivery.

-  These products are damaged when it is used on the following conditions:

- Supply voltage is applied in the opposite way.

- Overvoltage which is larger than the value indicated in the specification.

-  These products are will be damaged if it is used for a long time with the current (effective current) which exceeds the current rating. Careful attention must be paid so that maximum effective current is smaller than current rating.

-  Since magnetic cores are fragile parts, do not use the fallen products.

-  The characteristic can change by the influences of nearby current and magnetic field. Please make sure of the mounting position.

2) Disposal of Hall ICs and current sensors

-  Observe laws and company regulations when discarding Hall ICs and current sensors.

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