A World First
SMT-compatible Switch
KA / K2 / K9 Series

AGENDA
What is SMT-compatible switch?
＊SMT : Surface Mount Technology

Difference in Mounting Method
between ‘Reflow’ and ‘Flow’ Soldering
Advantages compared with conventional switch

AGENDA
What is SMT-compatible switch?
＊SMT : Surface Mount Technology

Difference in Mounting Method
between ‘Reflow’ and ‘Flow’ Soldering
Advantages compared with conventional switch

Positioning of SMT-compatible switch in Sunmulon products
Relationship between 「Mounting Method」and「Terminal Shape」
PANELmounting#110 Tab / Soldering （Available for most models）Socket （Available for CH, EH, EH-G, FH, VH, XH, and SP）
Connector （Available for CH, EH, and EH-G）

BOARDmounting

PCB Terminal (DIP Terminal)（Available for CH, DH, EH, HH, KC, TH, VH and YH）

SMT Terminal

KC（KA）

（K2）

（K9）

HH

What is SMT-compatible Switch?

＊SMT : Surface Mount Technology

A SWITCH that can be mounted on the SURFACE
of PCB and soldered by REFLOW process.

What is SMT-compatible Switch?

＊SMT : Surface Mount Technology

A SWITCH that can be mounted on the SURFACE
of PCB and soldered by REFLOW process.

Sunmulon succeeded world-first

Only Sunmulon mass-produce

commercializing of SMT-compatible

SMT-compatible illuminating pushbutton

illuminating pushbutton switch.

switch at this time.
(As at end of March 2019 researched by Sunmulon)

What is SMT-compatible Switch?

＊SMT : Surface Mount Technology

A SWITCH that can be mounted on the SURFACEof PCB and soldered by REFLOW process.

Sunmulon succeeded world-firstcommercializing of SMT-compatible
illuminating pushbutton switch.

Only Sunmulon mass-produce
SMT-compatible illuminating pushbutton
switch at this time.
(As at end of March 2019 researched by Sunmulon)

AGENDA
What is SMT-compatible switch?
＊SMT : Surface Mount Technology

Difference in Mounting Method
between ‘Reflow’ and ‘Flow’ Soldering
Advantages compared with conventional switch

SMT Reflow Soldering Process

Cream solder

Enlarged photo

Mount the switch on PCB
with the mounting machine

To reflow furnace

PCB after applying cream solder

Heat in a reflow furnace

Reflow furnace
In a reflow furnace?

Soldering completed

Heating Mechanism in a Reflow Furnace
In a reflow furnace?

Heat in a reflow furnace

Right after entering the reflow furnace,the cream solder remains in particles
and the chip parts are just on it,
but not yet bonded.

The flux evaporates and the cream solder
particles melt and join.
The parts such as switches also “sink” into
the liquid solder and are adhered to the solder.

Soldering completed

Flow Soldering Process
FlowSwitch

Insert into printed circuit board1

Dip in melted solder bath

Melted solder joins with lead wire3

Mounting on PCB by hand

Join by applying melted solder

2
Pass PCB over the bath filled with melted solder, and it’s joined by spouted solder.Flow Soldering Process
FlowSwitch

Insert into printed circuit board1

Dip in melted solder bath

Melted solder joins with lead wire3

Mounting on PCB by hand

Join by applying melted solder

2
Pass PCB over the bath filled with melted solder, and it’s joined by spouted solder.

Flow Soldering Process
Flow
SwitchInsert into printed circuit board1

Dip in melted solder bath

Melted solder joins with lead wire3

Mounting on PCB by hand

Join by applying melted solder

2
Pass PCB over the bath filled with melted solder, and it’s joined by spouted solder.

AGENDA
What is SMT-compatible switch?
＊SMT : Surface Mount Technology

Difference in Mounting Method
between ‘Reflow’ and ‘Flow’ Soldering
Advantages compared with conventional switch

Advantages of SMT-compatible switch ①
SMT

PCB Terminal

Enhance productivity
Image

The difference can be seen clearlyin the actual assembly board
which is mixed surface mountparts such as semiconductor andswitches.

Mounted switch TOGETHER
with other surface mountparts by chip mounter

Mounted surface mountparts by chip mounter

Soldering・REFLOW

Solder surface mount parts・REFLOW
Mounted switch manually into
the through hole (MANUAL)

Mounting
procedure

Efficiencyof mounting time※per 1pc using 48pcs

Soldering・FLOW・OR MANUAL
Peal off heat-resistant stickers
Assemble light cartridge(MANUAL)

Correct position(MANUAL)

15 seconds
Machine：11.5 seconds
Manual： 3.5 seconds

40 seconds
Machine：14 seconds
Manual： 26 seconds(3 steps)

Advantages of SMT-compatible switch ②REVERSE side of PCB

SMTHigher design
flexibility
PARTS and PATTERNS
can be placed on theREVERSE side of PCB.

High-density mounting= Downsizing of machines
PCB Terminal

Applications benefited from SMT compatibility＝Most suited to multiple usages of switches
Contributes toProduction Cost Reduction
by shortening
switch mounting time

Firefighting Command Device

Contributes toPCB & Device
Downsizing

Potential Treatment Device

Video Switcher

Signal Generator

SMT Product Line-up
K2

K912mm & 15mm square

9mm square
Flat

KAFlatConcave

Raise dot

KA

17.4mm square
Concave

Raise dot

Dual-Color（Red・Super Green）

Mono-Color （Red・Green・Yellow）
Dual-Color （Red・Green）

Dual-Color（Red・Green）

Dual-Color（Red・Super Green）

Multicolored（256 colors）

Contact Information

Sunmulon Co., Ltd.
Head Office
ADDRESS : 3-1-10, Togoshi, Shinagawa-ku, Tokyo, 142-0041 JAPAN
PHONE : +81-3-3783-6721 FAX : +81-3-3785-0873
http://www.sunmulon.co.jp/english/

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