Sparkfun Electronics Simon SMD Manuel du propriétaire

Page 1

Simon SMD

Kit Information & Instructions

This is a kit of loose components that go along with the SMD Soldering Lecture. This is

considered an intermediate kit for people who have soldered through-hole components

before and wish to learn how to solder surface mount components. This kit comes with

a preprogrammed ATmega328. All parts are listed below.

Kit includes:

Additional Tools Needed:

•NCP1402 IC

•10k Ohm Resistor

•47μF Capacitor

•10μF Capacitor

•0.1μF Capacitor (qty: 2)

•MBRA140 Diode

•22μH Inductor

•330 Ohm Resistors (qty: 4)

•Pre-programmed ATmega328 TQFP IC

•Tweezers

•Soldering Iron

•Solder

•Solder Wick

•Flux

•Eye Protection

•Buzzer

•LEDs (qty: 4)

•Battery Clips (qty: 2)

•Switches (qty: 2)

•Screws (qty: 4)

•Standoffs (qty: 4)

•Bezel Frame

•Button Pad

•Battery

Page 2 Page 3

Don’t: Use the very tip of the iron.

Do: Use the side of the tip of the iron, “The Sweet Spot.”

Do: Touch the iron to the component leg and metal SMD pad at

the same time.

Parts List

Soldering Tips

SMD Soldering • Level 1

SMD Soldering • Level 2

PTH Soldering

Final Assembly

Additional Info

Troubleshooting LEDs

Troubleshooting Jumpers

Notes

Learning More

Section

Page

Do: While continuing to hold the iron in contact with the leg

and metal pad, feed solder into the joint.

Do: Use a sponge to clean your iron whenever black oxidization

builds up on the tip.

Don’t: Glob the solder straight onto the iron and try to apply the

solder with the iron.

SMD SOLDERING TIPSTABLE OF CONTENTS

Page 4 Page 5

QUICKSTART • LEVEL-1 SMD SOLDERING [ STEPS 1 T0 8 ]

Locate the Buzzer.

Locate the Buzzer position on the board.

Steps highlighted in yellow represent a polarized component.

Pay special attention to the component’s markings indicating how

to place it on the board.

Touch iron’s sweet spot to the start-pad for 2-3 seconds.

Pre-tin the start-pad by feeding solder into the joint.

BOTTOM OF BOARD

Page 6 Page 7

First, pull solder away.

Second, remove the iron.

Solder should cover the entire pad and look like this - a tiny pillow.

Using your tweezers, position the buzzer slightly away from the pad.

Page 8 Page 9

Reheat Start-Pad

Add solder to second pad.

Slide Into Place

Remove Iron

For step 9, understand that alignment of the buzzer is very important.

You want to ensure the buzzer is centered and laying ﬂat against the

board. See possible errors to the right (Page 9).

III

To ﬁx these potential problems, reheat the solder while moving the buzzer

into place with your tweezers.

BAD BAD GOOD

Page 10 Page 11

Now that you’ve successfully soldered down your

ﬁrst SMD component, use the same method to

place and solder the following components.

10uF Capacitor

MBRA140 Diode

22uH Inductor

10uF Capacitor The white end of the capacitor should point

towards the rounded end on the PCB’s silkscreen.

MBRA140 Diode Before soldering, double-check that the white

line on the diode matches the line on the PCB’s silkscreen. The

white line is similar to the line on the 10uF capacitor in step 10.

22uH Inductor Make sure the inductor remains inside it’s

white outline after you’ve soldered both legs.

BOTTOM OF BOARD

CONTINUE WITH THE BOTTOM OF THE BOARD [ STEPS 10 T0 16 ]

Remember, components highlighted yellow are polarized.

Page 12 Page 13

0.1uF Capacitors

330 Resistors

330 Resistors These resistors are not polarized. However,

they do have a value marking on the top side. Make sure the

marking is facing up.

0.1uF Capacitors Ceramic capacitors like these are

not polarized. They don’t have a value marking. This means

they can be soldered into place in any rotation.

BOTTOM OF BOARD

Page 14 Page 15

10K Resistor

10K Resistor Just like the 330 resistors, these are not

polarized. Make sure the writing on the part (‘103’) is facing up.

47uF Capacitor The white line on the capacitor should point

towards the rounded end on the PCB’s silkscreen.

BOTTOM OF BOARD

Remember, components highlighted yellow are polarized.

47uF Capacitor

Page 16 Page 17

QUICKSTART • LEVEL-2 SMD SOLDERING [ STEPS 17 T0 21 ]

Now that you’ve successfully soldered down all Level-1 components, you

are ready to move on to Level-2. The next set of components have 5 or more

pads each, and the pad size is smaller. Although this is more challenging,

you will use the same methods as before.

Locate the NCP1402. Be sure to match up the legs with the pads on

the PCB. This component is polarized.

Locate the NCP1402 position on the board.

Remember, components highlighted yellow are polarized.

Touch iron’s sweet spot to the start-pad for 2-3 seconds.

Pre-tin the start-pad by feeding solder into the joint.

Page 18 Page 19

Reheat Start-Pad

Slide Into Place

Remove Iron

For step 21, use the same 3-step process you learned earlier (Step 8,

Page 8). A common error for these smaller types of components is a

jumper. To help avoid these, try not to use too much solder.

Understand the alignment of the component is important, and should

be oriented to look like the picture.

III

BAD GOOD

Learn how to ﬁx a jumper on Page 40 in the Troubleshooting section.

Add solder to the remaining 4 pads.

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