3. Preheating

13

15. PCB

 

1. Through-hole type

 

 

 

 

 

 

mounting

 

 

 

 

 

 

 

 

In keeping with making devices compact, it is becoming more common to solder the relay to a PC board along with the

 

 

semiconductors instead of using the previous plug-in type in which relays were plugged into sockets.

 

 

 

 

With this style, loss of function may occur because of seepage into the relay of flux, which is applied to the PC board. Therefore,

 

 

the following precautions are provided for soldering a relay onto a PC board. Please refer to them during installation in order to

 

 

avoid problems.

 

 

 

 

 

 

 

The type of protective structure will determine suitability for automatic soldering or automatic cleaning. Therefore, please review

 

 

the parts on construction and characteristics.

 

 

 

 

1. Mounting of Relay

 

• Avoid bending the terminals to make

 

 

 

 

 

the relay self-clinching. Relay

 

 

 

 

 

 

 

 

 

 

 

 

 

 

performance cannot be guaranteed if

 

 

 

 

 

 

 

the terminals are bent.

 

 

 

 

 

 

 

• Correctly make the PC board according

 

 

 

 

 

 

 

to the given PC board pattern

 

 

 

 

 

 

 

illustration.

 

 

 

 

 

 

 

• Tube packaging for automatic mounting

 

 

 

 

 

 

 

is available depending on the type of

 

 

 

 

 

 

 

relay. (Be sure that the relays don't

 

 

 

 

 

 

 

rattle.) Interference may occur internally

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

if the gripping force of the tab of the

 

Bad example

 

 

 

 

 

 

surface mounting machine is too great.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

This could impair relay performance.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2. Flux Application

 

• Adjust the position of the PC board so

 

 

 

 

 

that flux does not overflow onto the top

 

 

 

 

 

 

 

of it. This must be observed especially

 

 

 

 

 

 

 

for dust-cover type relays.

 

 

 

 

 

 

 

• Use rosin-based non-corrosive flux.

 

 

 

 

 

 

 

• If the PC board is pressed down into a

 

 

 

 

 

 

 

flux-soaked sponge as shown on the

 

 

 

 

 

 

 

right, the flux can easily penetrate a

 

 

 

 

 

 

 

dust-cover type relay. Never use this

 

 

 

method. Note that if the PC board is

pressed down hard enough, flux mayBad example even penetrate a flux-resistant type

relay.

•Be sure to preheat before using automatic soldering. For dust-cover type relays and flux-resistant type relays, preheating acts to prevent the penetration of flux into the relay when soldering. Solderability also improves.

•Preheat according to the following conditions.

Temperature

120°C/ 248°F or less

(PCB solder surface)

 

Time

Within approx. 2

minute

 

•Note that long exposure to high temperatures (e.g. due to a malfunctioning unit) may affect relay characteristics.

Page 13 Page 15
Page 14
Image 14
Panasonic ASCT1F46E manual Mounting of Relay, Flux Application
Page 13 Page 15

ASCT1F46E specifications

The Panasonic ASCT1F46E is an advanced conditioning unit designed to enhance indoor air quality while ensuring energy efficiency. As part of Panasonic's commitment to innovation, this model integrates state-of-the-art features that cater to modern living environments, making it a popular choice for both residential and commercial spaces.

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