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Comments
What is the definition of inductor?
A passive electronic component that stores energy as a magnetic field.
Learn more about inductor in the class "Soldering PCBs 220" below.
Soldering PCBs 220
Soldering Department
Class Information
Tooling U classes are offered at the beginner, intermediate, and advanced levels.
The typical class consists of 12 to 25 lessons and typically requires at least two hours of instruction time.
Class Name
Soldering PCBs 220
Description
This class covers how to create and repair printed circuit assemblies by soldering and desoldering various types of electronic components on printed circuit boards (PCBs).
Prerequisites
none
Difficulty
Intermediate
Number of Lessons
18
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Class Outline
Class Objectives
Objectives
Soldering and the Electronics Industry
The Printed Circuit Board
Electronic Components
Through-Hole Technology
Surface Mount Technology
Through-Hole Termination
On-Board Termination
Integrated Circuits
ICs and Electrostatic Discharge
Guidelines for Working with ICs
Preparation for Installing and Soldering PCB Components
Soldering Through-Hole Components
Soldering DIP ICs
Soldering Surface Mount Components
Joint Inspection
Desoldering PCB Components
Summary
Describe modern components used in electronics fabrication.
Describe the parts and composition of a printed circuit board.
List different types of electronic components.
Describe through-hole mounting technology.
Describe surface mounting technology.
List different types of through-hole lead termination.
List different types of on board lead termination.
Describe an integrated circuit.
Explain how to prevent ESD when working with integrated circuits.
List guidelines for proper handling of integrated circuits.
Explain how to prepare for installing and soldering components on PCBs.
Explain how to solder a through-hole component to a PCB.
Explain how to solder a dual-inline package integrated circuit to a PCB.
Explain how to solder a surface mount component to a PCB.
Explain how to inspect finished soldered joints.
Explain how to desolder through-hole and SMT components.
Class Vocabulary
Term
Definition
60/40
Solder that is 60% tin (Sn) and 40% lead (Pb). It is one of the most commonly used solder alloys.
63/37
Solder that is 63% tin (Sn) and 37% lead (Pb). It is a commonly used solder alloy that works especially well on small electronic parts.
bottom-only
A type of lead on an electronic component that is located underneath the component.
bridging
Excess solder that joins two or more adjacent pads on a PCB, creating a faulty electronic connection.
capacitor
An electronic component that stores an electrical charge.
clinched
Bent into a desired shape.
CMOS
Complementary Metal Oxide Semiconductor. CMOS is the semiconductor technology that is currently used for manufacturing processors and memory. Most personal computer and consumer electronics chips are some variant of CMOS.
conductive
Able to act as a path for the movement of electricity.
consumer electronics
Electronic equipment intended for use by everyday people. Consumer electronics usually find applications in entertainment, communications, and office productivity.
copper trace
A conductive path on top of a PCB made of copper. The copper trace is embedded on the surface of a PCB and forms a circuit when electronic components are soldered to it.
crimp
To pinch, bend, or press into a desired shape.
diode
A solid-state device that allows electricity to flow in only one direction.
DIP
Dual-inline package. An integrated circuit with two rows of external connecting terminals or pins, which are inserted into the holes of the printed circuit board. DIPs are well-suited for automated assembly into printed circuit boards.
DIPs
Dual-inline package. An integrated circuit with two rows of external connecting terminals or pins, which are inserted into the holes of the printed circuit board. DIPs are well-suited for automated assembly into printed circuit boards.
dual inline package
An integrated circuit with two rows of external connecting terminals or pins, which are inserted into the holes of the printed circuit board. DIPs are well-suited for automated assembly into printed circuit boards.
electronic circuit
Any complete pathway through which electrical current can flow. Electronics incorporates the use of semiconductor devices for a wide range of products including computers, cell phones, and radios.
electronic component
A basic electronic element usually packaged in a discrete form with two or more connecting leads or metallic pads. Components are intended to be connected together, usually by soldering to a printed circuit board, to create an electronic circuit with a particular function.
electrostatic discharge
Current produced by two objects having a static charge when they are brought close enough together to produce an arc or discharge, as static electricity. Electrostatic discharge can cause simple skin irritation for a person or destroy a semiconductor electronic device.
epoxy fiberglass
A combination of epoxy and fiberglass that is used in coatings, adhesives, and PCBs.
fillet
The rounded, concave section of the joint where the solder material bonds the component to a surface.
flat pack
A flat integrated circuit with its leads projecting from all four sides of the package without radius.
fully clinched
A lead with the end bent to a 90 degree angle.
grounding
A means of providing a safe path for electricity should it stray from its intended path.
gull wing lead
An SMT lead that is shaped like the outstretched wing of a seagull.
hot-air desoldering station
A soldering station with a hot air pencil for desoldering delicate surface mount components.
housing
A protective cover designed to contain or support a mechanical component.
inductor
A passive electronic component that stores energy as a magnetic field.
integrated circuit
A complete electronic circuit within a single component. Its name resulted from the integration of previously separate transistors, resistors, and capacitors, all on a single chip.
inward-formed L
A type of lead on an electronic component that curls underneath the component at an angle similar to the letter L.
ionized air blower
An air blower that removes static electricity from the air by releasing electrically neutral ions.
IPC: Association Connecting Electronic Industries
A United States-based trade association that sets quality standards and provides training in the electronic interconnect industry.
isopropyl alcohol
A colorless, flammable chemical compound with a strong odor used to sterilize surfaces. Also known as rubbing alcohol.
J-type lead
An SMT lead shaped like the letter "J."
laminated
Alternating thin layers of material that are bonded together.
lead
A thin wire that protrudes from an electronic component and provides an easy path for electricity to flow. Leads are also referred to as pins.
lead termination
The place where an electronic lead comes to an end.
lifting
A defect in which layers or parts of a PCB or component are lifted or pulled out of place.
mask
A coating on a PC board, usually dark green or dark blue, that is designed to insulate and protect the copper traces and keep them from shorting together. The mask is "masked out" to form solder pads to allow for soldering separate component leads.
on-board termination
Leads that end on the surface of the PCB.
packaging
A protective cover designed to contain or support a mechanical component.
pad
A copper platform to which surface mount components are soldered.
PCA
Printed circuit assembly. A PCA is a printed circuit board populated with electronic components. Without components it would simply be a PCB.
pin
Another name for a lead. Pins are thin wires that protrude from an electronic component and provide an easy path for electricity to flow.
power vacuum pump
A gun-shaped tool used for desoldering.
printed circuit assembly
A printed circuit board populated with electronic components.
printed circuit board
A layered construction of material used to mechanically support and electrically connect electronic components using conductive pathways, or traces, etched from copper sheets laminated onto a non-conductive surface.
QFP
Quad flat pack. A flat, rectangular, integrated circuit with its leads projecting from all four sides of the package without radius.
R
Rosin-only flux. Rosin-only fluxes are the least active and leave almost no residue. However, this type should be used only on surfaces that are very clean.
rectangular
A type of lead on an electronic component that takes the shape of a rectangular metal cap on each end of the component.
resistor
An electronic component that offers a known resistance to the flow of electricity.
RMA
Rosin mildly activated. RMA fluxes are more active than R fluxes but also leave some residue.
semi-clinched
A lead with the end partially bent.
short circuit
An unwanted electrical connection between a negative and positive source, or an interruption in the flow of electricity. Short circuits can damage equipment and can cause sparks or fire.
SnPb
The atomic symbols for tin (Sn) and lead (Pb).
square-end
A type of lead on an electronic component that takes the shape of a square metal cap on each end of the component.
straight-through
A lead that is not bent but rather is kept completely straight after being inserted though a PCB.
substrate
Any surface to which a coating or sealant or printing is applied.
surface mount
A method for constructing electronic circuits in which the components are mounted directly onto the surface of printed circuit boards (PCBs). Devices assembled this way are called surface-mount devices (SMDs).
through-hole
A method for constructing electronic circuits in which component leads are inserted through holes of printed circuit boards (PCBs).
through-hole termination
Leads that end through a hole on the PCB.
transistor
A device used to amplify a signal or open and close a circuit. In a computer, transistors function as an electronic switch.
transistor-outline
A type of packaging for integrated circuits.
Velostat
conductive sheet for electric field shielding. Carbon impregnated black polyethylene film.
via
In printed circuit board design, a pad with a plated hole that connects copper tracks from one layer of the board to other layer(s). Either the holes are electroplated or small rivets are inserted.
volt
A unit of measurement for electromagnetic force, or pressure.