G3H203SNDC524 Datasheet, PDF (9/12 Pages) Omron Electronics LLC – Solid State Relays Technical Information

PCB SSR Soldering
SSRs must be soldered at 260°C within five seconds. For models,
however, that conform to separate conditions, perform soldering
according to the specified requirements.
Use a rosin-based non-corrosive flux that is compatible with the
material of the SSR.
Ultrasonic Cleaning
Do not perform ultrasonic cleaning. Performing ultrasonic cleaning
after the SSR base has been installed will cause ultrasonic waves to
resonate throughout the SSR internal structure, thereby damaging
the internal components.
Handling the SSRs
Do Not Drop
The SSR is a high-precision component. Do not drop the SSR or
subject it to excessive vibration or shock regardless of whether the
SSR is mounted or not.
The maximum vibration and shock that an SSR can withstand varies
with the model. Refer to the relevant datasheet.
The SSR cannot maintain its full performance capability if the SSR is
dropped or subjected to excessive vibration or shock resulting in pos-
sible damage to its internal components.
The impact of shock applied to the SSR that is dropped varies, and
depends on the floor material, the angle of collision with the floor,
and the dropping height. For example, if a single SSR is dropped on
a plastic tile from a height of 10 cm, the SSR may receive a shock of
1,000 m/s² or more.
Handle SSRs in in-line packages with the same care and keep them
free from excessive vibration or shock.
PCB-mounting SSRs
Suitable PCBs
PCB Material
PCBs are classified into epoxy PCBs and phenol PCBs. The following table lists the characteristics of these PCBs. Select one, taking into account
the application and cost. Epoxy PCBs are recommended for SSR mounting in order to prevent the solder from cracking.
Item
Electrical
characteristics
Mechanical
characteristics
Economical
efficiency
Application
Epoxy
Phenol
Glass epoxy
Paper epoxy
Paper phenol
High insulation resistance.
Highly resistive to moisture ab-
sorption.
Inferior to glass epoxy but superior to New PCBs are highly insulation-resistive but easily
paper phenol PCBs.
affected by moisture absorption and cannot maintain
good insulation performance over a long time.
The dimensions are not easily af- Inferior to glass epoxy but superior to The dimensions are easily affected by temperature or
fected by temperature or humidity. paper phenol PCBs.
humidity.
Ideal for through-hole or multi-lay-
er PCBs.
Not suitable for through-hole PCBs.
Expensive
Rather expensive
Inexpensive
Applications that require high reli- Applications that may require less Applications in comparatively good environments
ability.
reliability than those for glass epoxy with low-density wiring.
PCBs but require more reliability
than those of paper phenol PCBs.
PCB Thickness
The PCB may warp due to the size, mounting method, or ambient
operating temperature of the PCB or the weight of components
mounted to the PCB. Should warping occur, the internal mechanism
of the SSR on the PCB will be deformed and the SSR may not pro-
vide its full capability. Determine the thickness of the PCB by taking
the material of the PCB into consideration.
Terminal Hole and Land Diameters
Refer to the following table to select the terminal hole and land diam-
eters based on the SSR mounting dimensions. The land diameter
may be smaller if the land is processed with through-hole plating.
Mounting Space
The ambient temperature around the sections where the SSR is
mounted must be within the permissible ambient operating tempera-
ture. If two or more SSRs are mounted closely together, the SSRs
may radiate excessive heat. Therefore, make sure that the SSRs are
separated from one another at the specified distance provided in the
datasheet. If there is no such specification, maintain a space that is
as wide as a single SSR.
Provide adequate ventilation to the SSRs as shown in the following
diagram.
Hole dia. (mm)
Nominal value
Tolerance
0.6
±0.1
0.8
1.0
1.2
1.3
1.5
1.6
2.0
Minimum land dia.
(mm)
1.5
1.8
2.0
2.5
2.5
3.0
3.0
3.0
836
Solid State Relays Technical Information