Sound Components (Buzzer) Precautions for use of Sound Components

Please take a look for technical guideline and failure mode information before using products.

SMD Piezoelectric Sounders

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No. Item Guideline
1 Pre-Mounting

Please avoid the sound-emitting hole and open hole when affixing the top of the piezoelectric sounder.

The sound pressure may drop or the sound may stop due to deformation of the piezoelectric diaphragm, cracks in the piezoelectric ceramic, or silicone breakage.

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2

Please make sure that no flux or coating agent enters through the sound-emitting hole or open hole.

The vibrations of the piezoelectric diaphragm may be inhibited. The sound pressure may then drop.

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3 After Mounting

Avoid the area near piezoelectric sounders when using compressed air to blow away foreign objects.

The sound pressure may drop or the sound may stop due to deformation of the piezoelectric diaphragm, cracks in the piezoelectric ceramic, or silicone breakage.

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4 Other

Do not use this product in an atmosphere containing chlorine gas, sulfidizing gas, acid, or another corrosive substances.

The characteristics may deteriorate. The sound pressure may then drop or the sound may stop.

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5

Please do not insert foreign objects through the sound-emitting hole or open hole.

The sound pressure may drop or the sound may stop due to deformation of the piezoelectric diaphragm, cracks in the piezoelectric ceramic, or silicone breakage.

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6

Please avoid affixing labels or masking tape to the product.

If a label or masking tape is affixed to the product in a way that blocks the sound-emitting hole and open hole, it may cause a failure such as a drop in the sound pressure.
If you need to affix a label or masking tape to the product, please check the positions of the sound-emitting hole and open hole. In addition, please pay attention because the lid may come off when you remove the label or masking tape.

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7

Please do not strongly press the top of the product.

The lid may become deformed and it may come off.

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Pin type Piezoelectric Sounders

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No. Item Guideline
1 Pre-Mounting

When inserting this product manually into the printed circuit board, be careful that the pins properly enter the holes in the board.

If the fixing part of a pin is broken, it is conceivable that an open circuit may occur. Because of this sound may fail to be emitted due to the pins being pushed into the product.

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2

Secure the rear cover pins to the board.Failure to do this may result in a chattering type noise.

Failure to do this may result in a chattering type noise.

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3

To prevent flux vapor from entering the product, arrange the holes in the board so that they do not align with the open holes in the product.

An insulating layer is formed at the terminal contact part, which may prevent the generation of noise.

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4 Soldering

It is possible for the product to become damaged from heat when being soldered. For this reason, please use a one-sided board.

If you use a two-sided through-hole board instead of a one-sided board, the rear cover or the fixing points of the pins are likely to become deformed,resulting in poor contact or an open circuit, which in turn may result in reduced sound volume or no sound at all.

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5

Please review our stipulated soldering conditions (*).

If the peripheral support condition of the vibration plate changes, the sound pressure level may decrease.

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6 After Mounting

If the product is tilted when soldered, melt the solder again and correct the tilt. (Do not press down on the product from the top.)

If the pins touch two locations on the piezoelectric vibration plate, a short may occur, preventing any sound from being emitted.

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7

Avoid having the piezoelectric sounder in any area where foreign objects will be blown away using compressed air.

This may cause deformation of the piezoelectric sounder or cracking of the piezoelectric ceramic, resulting in unstable sound.

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8

If the casing and the rear cover are separated after the product has been mounted, do not attempt to re-assemble the product. Replace it with a new one.

Deformation and mis-positioning of the pins or the vibration plate may result in unstable sound or prevent the generation of any sound at all.

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9 Other

Do not insert foreign objects into the sound emission hole.

This may cause deformation of the piezoelectric sounder or cracking of the piezoelectric ceramic, resulting in unstable sound.

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10

Do not use this product in an atmosphere containing chlorine gas, sulfidizing gas, acid, or another corrosive substances.

This may cause the characteristics of the product to deteriorate, and also reduce the sound volume level or prevent the emission of any sound at all.

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Piezoelectric Buzzers

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No. Item Guideline
1 Pre-Mounting

When inserting this product manually into the printed circuit board, be careful that the pins properly enter the holes in the board.

If the fixing part of a pin is broken, it is conceivable that an open circuit may occur. Because of this sound may fail to be emitted due to the pins being pushed into the product.

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2 After Mounting

If the product is tilted when soldered, melt the solder again and correct the tilt. (Do not press down on the product from the top.)

If the pins touch two locations on the piezoelectric diaphragm, a short may occur, preventing any sound from being emitted.

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3

Avoid having the piezoelectric buzzer in any area where foreign objects will be blown away using compressed air.

This may cause deformation of the piezoelectric buzzer or cracking of the piezoelectric ceramic, resulting in unstable sound.

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4

If the casing and the rear cover are separated after the product has been mounted, do not attempt to re-assemble the product. Replace it with a new one.

Deformation and mis-positioning of the pins or the vibration plate may result in unstable sound or prevent the generation of any sound at all.

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5 Other

Do not insert foreign objects into the sound emission hole.

This may cause deformation of the piezoelectric sounder or cracking of the piezoelectric ceramic, resulting in unstable sound.

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6

Do not use this product in an atmosphere containing chlorine gas, sulfurizing gas, acid, or another corrosive substances.

This may cause the characteristics of the product to deteriorate, and also reduce the sound volume level or prevent the emission of any sound at all.

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Piezoelectric Diaphragms

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No. Item Guideline
1 Pre-Mounting

Do not pull on a lead wire or handle it in such a way that it becomes bent.

The lead wire may separate from the soldering point or become an open circuit, which would prevent sound from being emitted.

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2 Other

Do not use this product in an atmosphere containing chlorine gas, sulfurizing gas, acid, or another corrosive substances.

This may cause the characteristics of the product to deteriorate, and also reduce the sound volume level or prevent the emission of any sound at all.

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