SAQA All qualifications and part qualifications registered on the National Qualifications Framework are public property. Thus the only payment that can be made for them is for service and reproduction. It is illegal to sell this material for profit. If the material is reproduced or quoted, the South African Qualifications Authority (SAQA) should be acknowledged as the source.
SOUTH AFRICAN QUALIFICATIONS AUTHORITY 
REGISTERED UNIT STANDARD: 

Demonstrate knowledge of electrical and electronic components 
SAQA US ID UNIT STANDARD TITLE
115230  Demonstrate knowledge of electrical and electronic components 
ORIGINATOR
SGB Aircraft Maintenance and Overhaul 
PRIMARY OR DELEGATED QUALITY ASSURANCE FUNCTIONARY
-  
FIELD SUBFIELD
Field 06 - Manufacturing, Engineering and Technology Manufacturing and Assembly 
ABET BAND UNIT STANDARD TYPE PRE-2009 NQF LEVEL NQF LEVEL CREDITS
Undefined  Regular  Level 2  NQF Level 02 
REGISTRATION STATUS REGISTRATION START DATE REGISTRATION END DATE SAQA DECISION NUMBER
Reregistered  2018-07-01  2023-06-30  SAQA 06120/18 
LAST DATE FOR ENROLMENT LAST DATE FOR ACHIEVEMENT
2024-06-30   2027-06-30  

In all of the tables in this document, both the pre-2009 NQF Level and the NQF Level is shown. In the text (purpose statements, qualification rules, etc), any references to NQF Levels are to the pre-2009 levels unless specifically stated otherwise.  

This unit standard does not replace any other unit standard and is not replaced by any other unit standard. 

PURPOSE OF THE UNIT STANDARD 
This unit standard will be useful to people employed in the aerospace industry in an aircraft maintenance capacity. This unit standard covers basic knowledge about resistors and capacitors, the use of capacitors for suppression of radio interference, and the identification of components widely used in the electrical and electronic industries.

People credited with this unit standard are able to:
  • Explain terminology used in conjunction with electrical and electronic components.
  • Demonstrate knowledge of linear resistance and resistors.
  • Demonstrate knowledge of non-linear resistors.
  • Demonstrate knowledge of capacitance and capacitors.
  • Demonstrate knowledge of the use of capacitors for suppression of radio and television interference.
  • Identify electrical and electronic components. 

  • LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING 
    The credit calculation is based on the assumption that learners are already competent in terms of the following outcomes or areas of learning when starting to learn towards this unit standard:
  • Communications and Mathematical literacy at Level 2, or equivalent competence. 

  • UNIT STANDARD RANGE 
    The following scope and context applies to the whole unit standard:
  • This unit standard has been designed for off-job training and assessment.
  • For assessment purposes:
    - Use of a calculator during assessment is permitted.
    - Candidates are expected to express calculated values in the relevant Systeme Internationale (SI) units, including multiples and sub-multiples (pico, nano, micro, milli, kilo, mega, etc.) and be able to convert between them.
    - Charts of resistor and capacitor colour codes may be referred to during assessment.

    Specific range statements are provided in the body of the unit standard where they apply to particular specific outcomes or assessment criteria. 

  • Specific Outcomes and Assessment Criteria: 

    SPECIFIC OUTCOME 1 
    Explain terminology used in conjunction with electrical and electronic components. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    The meanings of terms describing components are explained in accordance with accepted industry definitions. 
    ASSESSMENT CRITERION RANGE 
    Terms - must include: tolerance, preferred values, stability, power rating, voltage rating, current rating.
     

    ASSESSMENT CRITERION 2 
    The meaning of the word dissipation is explained in terms of its association with power ratings. 

    SPECIFIC OUTCOME 2 
    Demonstrate knowledge of linear resistance and resistors. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    The unit of resistance and its multiples are defined, and symbols and terms are stated in line with accepted definitions and practice. 

    ASSESSMENT CRITERION 2 
    Factors affecting resistance are explained. 
    ASSESSMENT CRITERION RANGE 
    Factors must include: length, cross-sectional area, resistivity of material, temperature.
     

    ASSESSMENT CRITERION 3 
    Resistance is accurately calculated from resistivity, length, and cross-sectional area. 

    ASSESSMENT CRITERION 4 
    Different constructions of resistors are described in terms of their key features and differences. 
    ASSESSMENT CRITERION RANGE 
    Resistors include film-type, wire-wound, slider and rotary variable resistors.
     

    ASSESSMENT CRITERION 5 
    One application for each type of resistor is described in terms of control of voltage and current in electrical and electronic circuits. 

    ASSESSMENT CRITERION 6 
    Terminal connections of variable resistors are explained in terms of connection into a circuit. 

    ASSESSMENT CRITERION 7 
    Values of resistance, rating, and tolerance are determined from resistor markings. 

    SPECIFIC OUTCOME 3 
    Demonstrate knowledge of non-linear resistors. 
    OUTCOME RANGE 
    Resistors may be: negative temperature co-efficient (NTC), positive temperature co-efficient (PTC), voltage dependent resistor (VDR), light dependent resistor (LDR). 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    Characteristic curves are identified in relation to a specified resistor. 

    ASSESSMENT CRITERION 2 
    Drawing symbols are identified and their use accurately explained. 

    ASSESSMENT CRITERION 3 
    One application is described for each type of resistor in terms of its function in a simple circuit. 

    SPECIFIC OUTCOME 4 
    Demonstrate knowledge of capacitance and capacitors. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    The unit of capacitance and its multiples are defined, and symbols and terms are stated. 

    ASSESSMENT CRITERION 2 
    Factors affecting capacitance are explained in terms of their impact and application. 
    ASSESSMENT CRITERION RANGE 
    Factors must include: area, distance between plates, dielectric permittivity.
     

    ASSESSMENT CRITERION 3 
    Capacitance is calculated from charge and terminal voltage. 

    ASSESSMENT CRITERION 4 
    The constructions of different types of capacitors are described, and one application stated for each. 
    ASSESSMENT CRITERION RANGE 
    Constructions must include: air, paper, mica ceramic, electrolytic, solid dielectric.
     

    ASSESSMENT CRITERION 5 
    Methods of connecting capacitors into a circuit are described with reference to polarity. 

    ASSESSMENT CRITERION 6 
    Capacitance and voltage rating are determined by inspection of capacitor markings. 

    SPECIFIC OUTCOME 5 
    Demonstrate knowledge of the use of capacitors for suppression of radio and television interference. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    The use of capacitors in radio and television interference suppression is explained in terms of construction and application. 

    ASSESSMENT CRITERION 2 
    Requirements regarding the use of capacitors for interference suppression are stated, and reasons given. 
    ASSESSMENT CRITERION RANGE 
    Requirements - must include: capacitance connected to exposed metalwork not to exceed 0,005mf; interference suppression devices not to be connected in the earth continuity conductor; replacement suppression capacitors for use in 230 volt appliances to be rated at least at twice the voltage.
     

    SPECIFIC OUTCOME 6 
    Identify fifteen electrical and electronic components. 
    OUTCOME RANGE 
    Components must be identifed either by inspection of given components, or by selection from a physical or pictorial display, with the assistance of manufacturers' data. Typical components may include:

    Resistors (film, wire-wound, fixed, variable, light dependent resistor (LDR), voltage dependent resistor (VDR), temperature dependent resistor (TDR), positive temperature co-efficient (PTC), and negative temperature co-efficient (NTC)); capacitors (paper, plastic, ceramic, electrolytic; fixed, variable, pre-set variable); chokes (iron or ferrite-cored, air-cored); diodes (rectifier, zener, light-emitting); transistors (bipolar junction transistor (BJT), field effect transistor (FET)); electron tubes (cathode ray tube (CRT), thermionic diode and other vacuum tubes, ignitron, thyratron, magnetron); thyristor devices (diac, triac, silicon controlled rectifier (SCR), light activated silicon controlled rectifier (LASCR)); transformers (power, interstage, output, centre-tapped); photo-devices (photo-cells, photo-diodes, photo-transistors, photo-couplers, heat sinks); integrated-circuit packages; inductors. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    Components are identified as to type, in accordance with accepted industry usage. 

    ASSESSMENT CRITERION 2 
    One common application is stated for each component in line with accepted site and/or industry practice. 


    UNIT STANDARD ACCREDITATION AND MODERATION OPTIONS 
  • Anyone assessing a learner against this unit standard must be registered as an assessor with the relevant ETQA.
  • Any institution offering learning that will enable achievement of this unit standard must be accredited as a provider through the relevant ETQA by SAQA.
  • Moderation of assessment will be overseen by the relevant ETQA according to the moderation guidelines and the agreed ETQA procedures. 

  • UNIT STANDARD ESSENTIAL EMBEDDED KNOWLEDGE 
    Essential embedded knowledge will be assessed through assessment of the specific outcomes in terms of the stipulated assessment criteria. Candidates are unlikely to achieve all the specific outcomes, to the standards described in the assessment criteria, without knowledge of the listed embedded knowledge. This means that for the most part, the possession or lack of the knowledge can be directly inferred from the quality of the candidate's performance. Where direct assessment of knowledge is required, assessment criteria have been included in the body of the unit standard. 

    UNIT STANDARD DEVELOPMENTAL OUTCOME 
    N/A 

    UNIT STANDARD LINKAGES 
    N/A 


    Critical Cross-field Outcomes (CCFO): 

    UNIT STANDARD CCFO IDENTIFYING 
    Identify and solve problems and make decisions using critical and creative thinking.
  • Note: The ability of the candidate to identify hazardous conditions, assess and take appropriate action. 

  • UNIT STANDARD CCFO WORKING 
    Work effectively with others as members of a team, group, organisation or community.
  • Note: The ability and willingness of the candidate to accept and interpret work instructions correctly and to request assistance with making safe in an appropriate manner as a team member. 

  • UNIT STANDARD CCFO ORGANISING 
    Organise and manage themselves and their activities responsibly and effectively.
  • Note: The preparation for making safe, the candidate must indicate what tools and personnel protective equipment is required and communicate to fellow workers his/her intentions. 

  • UNIT STANDARD CCFO COLLECTING 
    Collect, analyse, organise and critically evaluate information.
  • Note: The ability of the candidate to reconcile the information from the visual examination and constantly evaluate the changing situation. 

  • UNIT STANDARD CCFO COMMUNICATING 
    Communicate effectively, using visual, mathematical and / or language skills in the modes of oral and / or written presentations.
  • Note: The appropriate communication with the relevant personnel with regard to the reporting of hazards and sub-standard conditions will indicate his/her proficiency in effective communication. 

  • UNIT STANDARD CCFO SCIENCE 
    Use science and technology effectively and critically showing responsibility towards the environment and health of others.
  • Note: The use of science and technology is not relevant for this unit standard. 

  • UNIT STANDARD CCFO DEMONSTRATING 
    Demonstrate an understanding of the world as a set of related systems by recognising that problem-solving contexts do not exist in isolation.
  • Note: The ability of the candidate to identify hazard conditions. The effect of non-compliance and deviation from electrical procedures will indicate his/her proficiency in understanding that a specific action or decision taken has more than one effect. 

  • UNIT STANDARD ASSESSOR CRITERIA 
    Assessors should keep the following principles in mind when designing and conducting assessments against this unit standard:
  • Focus the assessment activities on gathering evidence in terms of the main outcome expressed in the title to ensure assessment is integrated rather than fragmented. Remember we want to declare the person competent in terms of the title. Where assessment at title level is unmanageable, then focus assessment around each specific outcome, or groups of specific outcomes.
  • Make sure evidence is gathered across the entire range, wherever it applies. Assessment activities should be as close to the real performance as possible, and where simulations or role-plays are used, there should be supporting evidence to show the candidate is able to perform in the real situation.
  • Do not focus the assessment activities on each assessment criterion. Rather make sure the assessment activities focus on outcomes and are sufficient to enable evidence to be gathered around all the assessment criteria.
  • The assessment criteria provide the specifications against which assessment judgements should be made. In most cases, knowledge can be inferred from the quality of the performances, but in other cases, knowledge and understanding will have to be tested through questioning techniques. Where this is required, there will be assessment criteria to specify the standard required.
  • The task of the assessor is to gather sufficient evidence, of the prescribed type and quality, as specified in this unit standard, that the candidate can achieve the outcomes again and again and again. This means assessors will have to judge how many repeat performances are required before they believe the performance is reproducible.
  • All assessments should be conducted in line with the following well documented principles of assessment: appropriateness, fairness, manageability, integration into work or learning, validity, directness, authenticity, sufficiency, systematicity, openness and consistency. 

  • REREGISTRATION HISTORY 
    As per the SAQA Board decision/s at that time, this unit standard was Reregistered in 2012; 2015. 

    UNIT STANDARD NOTES 
    N/A 

    QUALIFICATIONS UTILISING THIS UNIT STANDARD: 
      ID QUALIFICATION TITLE PRE-2009 NQF LEVEL NQF LEVEL STATUS END DATE PRIMARY OR DELEGATED QA FUNCTIONARY
    Core  59569   National Certificate: Electronics  Level 3  NQF Level 03  Reregistered  2023-06-30  MICTS 
    Core  65651   National Certificate: Sewing Machine Mechanics  Level 3  NQF Level 03  Reregistered  2023-06-30  FPMSETA 
    Core  48861   National Certificate: Aircraft Maintenance and Overhaul  Level 4  Level TBA: Pre-2009 was L4  Passed the End Date -
    Status was "Reregistered" 
    2016-12-31  TETA 


    PROVIDERS CURRENTLY ACCREDITED TO OFFER THIS UNIT STANDARD: 
    This information shows the current accreditations (i.e. those not past their accreditation end dates), and is the most complete record available to SAQA as of today. Some Primary or Delegated Quality Assurance Functionaries have a lag in their recording systems for provider accreditation, in turn leading to a lag in notifying SAQA of all the providers that they have accredited to offer qualifications and unit standards, as well as any extensions to accreditation end dates. The relevant Primary or Delegated Quality Assurance Functionary should be notified if a record appears to be missing from here.
     
    1. Cape Peninsula University of Technology 
    2. Makwedeng Training 
    3. Microlek 
    4. THANDEKA VOCATIONAL EDUCATIONAL TRUST (PTY) LTD 
    5. Work Skills Resources 



    All qualifications and part qualifications registered on the National Qualifications Framework are public property. Thus the only payment that can be made for them is for service and reproduction. It is illegal to sell this material for profit. If the material is reproduced or quoted, the South African Qualifications Authority (SAQA) should be acknowledged as the source.