ATQ20122SLZ datasheet(20/22 Pages) PANASONIC

20 / 22 page

Panasonic Industry Co., Ltd. Electromechanical Control Business Division

industrial.panasonic.com/ac/e/

ASCTB414E 202210

Panasonic Industry Co., Ltd. 2022

GUIDELINES FOR SIGNAL RELAYS USAGE

10%

60%

Spot

Humidity indicator card

●: indicate brown, ○: Other than brown ( blueish color )

5％

10％

60％

Bake treatment

necessity judgment

Ⅰ

●

No need to bake

Ⅱ

○

●

No need to bake

Ⅲ

○

●

Need to bake

Ⅳ

○

Need to bake

● Storage requirements

Since the surface-mount terminal type is sensitive to

humidity it is packaged with tightly sealed anti-humidity

packaging. However, when storing, please be careful of

the following.

1) Please use promptly once the anti-humidity pack is

opened. ( within 72 hours, Max. 30 ℃ / 70% RH ).

If left with the pack open, the relay will absorb

moisture which will cause thermal stress when reﬂow

mounting and thus cause the case to expand. As a

result, the seal may break.

2) If relays will not be used within 72 hours, please store

relays in a humidity controlled desiccator or in an anti-

humidity bag to which silica gel has been added.

* If the relay is to be soldered after it has been exposed to excessive

humidity atmosphere, cracks and leaks can occur.

Be sure to mount the relay under the required mounting conditions.

3) When relays ( which is packaged with humidity

indicator and silica gel ) meeting one of below criteria,

please bake ( dry ) before use.

• When the storage conditions speciﬁed in 1) are

exceeded.

• When humidity indicator is in Ⅲ or Ⅳ status according

to judgement standard.

Please check humidity indicator color and decide if

baking is necessary or not.

＜Baking ( Drying ) conditions＞

• With reel : 45 ℃, 96 hours or more.

• Without reel ( including relay only ): 60 ℃, 35 hours

or more.

4 ) The following cautionary label is aﬃxed to the anti-

humidity pack.

● Silicon

When a source of silicone substances ( silicone rubber,

silicone oil,silicone coating materials and silicone ﬁlling

materials etc. ) is used around the relay, the silicone gas

( low molecular siloxane etc. ) may be produced

This silicone gas may penetrate into the inside of the

relay. When the relay is kept and used in this condition,

silicone compound may adhere to the relay contacts

which may cause the contact failure.

Do not use any sources of silicone gas around the relay

( Including plastic seal types ).

● NOx Generation

When relay is used in an atmosphere high in humidity

to switch a load which easily produces an arc, the NOx

created by the arc and the water absorbed from outside

the relay combine to produce nitric acid.

This corrodes the internal metal parts and adversely

aﬀects operation.

Avoid use at an ambient humidity of 85 % RH or higher

( at 20 ℃ ).

If use at high humidity is unavoidable, please contact our

sales representative.

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