Electrical and Electronics: Module 22

Module 22A: Soldering, De-soldering and Recycling Components (Optional)

Suggested time: 5 - 10 hours

Level: Introductory

Prerequisite: Module 2A

Foundational Objectives

To read and interpret schematic diagrams and other technical documents.
To use appropriate terminology for electricity or electronics in context.
To work safely and cooperatively with other students and handle materials in a safe manner.
To demonstrate the safe use and knowledge of meters and hand and power tools used in the electrical industry.

Common Essential Learnings Foundational Objectives

To promote both intuitive, imaginative thought and the ability to evaluate ideas and processes, in order to find meaningful solutions to problems. (CCT)
To explore the technical, social and cultural implications of present technology and of impending technological developments as they arise within electronics. (TL)

Learning Objectives	Notes
IDENTIFYING AND DE-SOLDERING
22.1 To identify re-useable components on a circuit board and select various items for reuse. (TL)	Disassemble discarded electronic devices with the intent to recycle the parts.
22.2 To demonstrate the correct method for de-soldering electronic components. (IL)	The salvaged parts must be checked for accuracy if they are to be reused. This exercise may be most valuable to teach soldering and de-soldering techniques. Students may use de-soldering bulbs, solder suckers and wicks in the process.

TESTING AND SORTING

22.3 To demonstrate the procedure to test each component using proper techniques. (TL)	Refer to Module 19 for information about the use of meters.
22.4 To demonstrate ability to differentiate between similar components and store appropriately. (CCT)	Plastic containers or egg cartons may be used to store the parts as they are sorted.

SOLDER AND SOLDERING

22.5 To describe the content of solderand explain why 63/37 is the best solder for use in electronics. (COM)	Research different tin/lead compositions and list some characteristics of each type. Review safety considerations regarding chemicals given off while soldering as well as the heat generated by the soldering tools.
22.6 To list the advantages and disadvantages of using a soldering iron or soldering gun in the soldering application. (CCT)	List the ratings of the soldering irons and soldering guns on hand and describe the application of each type.
22.7 To describe the function and use of flux in the soldering process. (COM)	Solder a connection with and without the use of flux and describe the difference in performance of the solder.
22.8 To practise making a reliable soldered connection on a printed circuit board.	Have students solder connections on their projects or solder their recycled parts on a surplus circuit board.
22.9 To solder surface mount technology (SMT) devices on a circuit board and check the results of the soldering operation.	Follow the correct procedure for SMT devices.

Module 22B: Soldering, De-soldering and Recycling Components (Optional)

Suggested time: 5 - 10 hours

Level: Intermediate

Prerequisite: Module 22A

Review or repeat Module 22A as required.