5

D3SH

Surface Mount Switch

3

S

H

Precautions

★Please refer to "Common Precautions" for correct use.

●Electrical Ratings

• Confirm the contact load in order to select an appropriate

switch rating.

• Do not apply an excessive electrical load to the contacts,

otherwise the contacts may weld, resulting in a short circuit or

burning.

●Terminal Connection

• Do not use flow soldering or hand soldering to solder

terminals.

• Conduct reflow soldering within the range shown in the

terminal temperature profile below.

Some reflow soldering devices have extremely high peak

values. Do a test in advance to confirm proper soldering

conditions.

• Do not conduct reflow soldering more than twice. Also provide

a time interval of at least five minutes between the first and

second reflow soldering processes to allow the Switch to

return to room temperature.

Heating the Switch continuously (without an interval) may

cause the edges of the Switch to melt and degrade the

characteristics.

• When printing for a cream solder process, a 0.13 mm screen

thickness is recommended.

• Be sure to provide local ventilation.

●Printed Circuit Boards

Special attention must be paid to the handling of printed circuit

boards after a Switch has been mounted onto them. Airborne

PCB particles may penetrate the interior of the Switch when

printed circuit boards are separated by cutting. Also, do not stack

printed circuit boards that have Switches mounted on them.

●Product Specification Details

• This document provides only a partial list of specifications. It is

recommended that you request complete drawings and

specifications prior to purchasing or using the product.

●Mounting

• The cover has the same electric potential as the COM

terminal. Do not short-circuit the cover with a NO or NC

terminal when mounting the cover.

• Be careful of the following points. Incorrect handling may lead

to insufficient actuator return, Switch damage, or reduced

durability.

- Set the operating body in line with the direction of the

actuator movement, and make sure that the operating

body is completely separate from the actuator when the

Switch is in the free position (FP). When the actuator is

operated from the crosswise direction of the Switch, make

sure that the corner of the operating body has a minimum

radius of R1.

- Set the Switch stroke to 70% to 100% of the overtravel

(the difference between the operating position and the

total travel position).

- Do not subject the Switch to operations that involve strong

impact.

- Do not use the Switch as a stopper.

- Do not apply excessive loads to the cover or operate the

actuator from a direction other than a specified operating

direction.

- Do not use an adhesive to secure the Switch.

• A lubricant is used in the Switch. Some of the lubricant may

seep out because the Switch does not have an airtight

construction. Consider this possibility with respect to the

usage conditions when designing or using the Switch.

●Application Environment

Do not use the Switch in locations that are subject to toxic gas,

silicon, excessive dust, excessive dirt, high temperatures, high

humidity, sudden temperature changes, water splashes, or oil

splashes.

Otherwise, damage resulting by faulty contact of the Switch

contacts, corrosion, or other causes, or other functional faults

may occur.

●Insulation and Wiring

Be sure that the installation conditions provide a sufficient

insulation distance between Switch terminals and other metal

parts, lands, etc.

●Cleaning

The Switch does not have an airtight construction, and it must

not be cleaned with cleaning fluids. Malfunctions may occur if the

cleaning fluid penetrates the interior of the Switch together with

flux or foreign matter from the surface of the PCB.

●Confirmation with Actual Equipment

Be sure to confirm the quality of the product under the load and

environmental conditions that will be used during actual

applications.

Caution

MAX255°C

220°C

180°C

150°C

Preheating time

Heating time

40 s max.

90 to 120 s

Correct Use

Cover

Operating body

R1 min.