- The BST exam is 75 questions in two hours, and you need 75% to pass.
- Exam fee is $80; no hands-on skills demonstration is required.
- You may use ETA's Common Formulas Sheet, scratch paper, and a non-programmable or scientific calculator.
- Certification is valid four years; renewal needs 40 CE hours or employer verification plus $100 in fees.
Exam Mechanics at a Glance
Before you memorize a single formula, lock in the logistics. ETA International administers the Basic Systems Technician credential through ETA Certification Administrators and its network of approved testing sites. The stand-alone exam is 75 questions, delivered in a two-hour window, and you need a raw score of 75% to pass. There is no separate hands-on or practical assessment - this is a knowledge exam, so your prep time is best spent on comprehension and recall, not lab reps.
The registration fee is $80. That single number covers your seat at an approved testing site; it does not include study materials, retake fees, or maintenance costs down the road. If you want the full breakdown of what you'll actually spend from registration through renewal, see the BST Certification Cost breakdown.
The 10 Domains, Summarized
Every question on the exam maps back to one of ten content domains. You won't get a percentage breakdown from ETA publicly, so treat each domain as roughly equal in importance unless your prep materials tell you otherwise. For a deeper walk-through of each area, the BST Exam Domains Guide is the companion piece to this cheat sheet.
Domain 1: Basic Safety
Covers workplace hazard recognition, PPE selection, lockout/tagout awareness, and general shop-floor safety practices relevant to entry-level technician roles.
- Know common hazard symbols and PPE pairings
- Understand why safety is tested first - it underlies every other domain
Domain 2: Logical Thinking - Principles for Problem Solving
Tests structured troubleshooting: identifying symptoms, isolating variables, and following a logical sequence rather than guessing.
- Practice reading a scenario and eliminating wrong answers systematically
- This domain rewards process, not memorized facts
Domain 3: Manufacturing Principles and Processes
Covers how products move through production environments, basic quality concepts, and general manufacturing terminology.
- Understand the vocabulary of a production floor
- Know the sequence of a typical build or assembly process
Domain 4: Tools and Techniques
Focuses on correct tool selection and use for common technician tasks.
- Match tool types to specific jobs
- Know proper technique, not just tool names
Domain 5: Copper Wiring, Cable and Connectors
One of the more detail-heavy domains - covers wire gauges, cable types, connector standards, and termination basics.
- Be able to identify connector types by function
- Know how wiring choices relate to signal and power needs
Domain 6: Power Sourcing
Covers basic power supply concepts, AC/DC fundamentals, and how systems draw and regulate power.
- Pair this domain with the formulas sheet - expect calculation-style questions
Domain 7: Electronics System Circuit Processes
Tests understanding of basic circuit behavior and how electronic systems process signals.
- Review Ohm's Law relationships since they surface here and in Domain 6
Domain 8: Industrial Devices and Automation Controls
Covers sensors, actuators, and basic automation control concepts used in industrial settings.
- Know the difference between input and output devices
- Understand basic control loop logic
Domain 9: Mechanical Fastening Processes
Covers fastener types, torque concepts, and correct mechanical assembly practices.
- Match fastener type to application
- Understand why over-torquing or under-torquing matters
Domain 10: Introduction to Test Equipment
Covers basic use of multimeters and other common test instruments for verifying circuits and components.
- Know what each meter setting measures
- Understand safe test equipment handling procedures
If you're still deciding how much overall effort this exam requires relative to your background, How Hard Is the BST Exam? puts the ten domains in context against typical candidate preparation time.
What You Can Bring Into the Room
Unlike many technical certification exams, BST gives you a few reference tools during the test itself. You're permitted to use:
- ETA's Common Formulas Sheet
- Scratch paper
- A non-programmable or scientific calculator
That combination tells you something important: the exam is testing whether you know when and how to apply a formula, not whether you can recite it from memory. Spend your prep time practicing formula selection and setup - the sheet handles the recall for you.
Key Takeaway
Since the Common Formulas Sheet is provided, drill on identifying which formula a Domain 6 or Domain 7 question is asking for - not on memorizing the formulas themselves.
Core Facts Sheet by Topic
Use this table as your final scan before test day. It condenses the mechanics you need to have cold.
| Item | Detail |
|---|---|
| Administering body | ETA International, via ETA Certification Administrators and approved testing sites |
| Exam format | 75 questions, stand-alone exam |
| Time limit | Two hours |
| Passing score | 75% |
| Exam fee | $80 |
| Hands-on component | None required |
| Allowed materials | Common Formulas Sheet, scratch paper, non-programmable/scientific calculator |
| Certification validity | Four years |
| Renewal requirement | 40 CE hours or employer verification, plus $100 in fees over the cycle |
For the exact scoring math behind that 75% threshold - including how many questions you can miss - see BST Passing Score: Exactly What You Need to Pass. And if you haven't confirmed eligibility yet, check BST Requirements: Eligibility, Prerequisites & How to Qualify before you register.
Final-Week Review Schedule
A cheat sheet works best when it's paired with a short, focused review plan rather than a full study restart. If you're in your last stretch before test day, allocate time by domain weight and personal weak spots rather than spreading effort evenly.
Wiring, Power, and Circuits
- Re-drill Domain 5, Domain 6, and Domain 7 together since they share formula-based logic
- Practice formula-sheet lookups under timed conditions
Hands-Off Mechanical and Process Domains
- Review Domain 3, Domain 9, and Domain 4 vocabulary and matching-style questions
- Focus on tool-to-task and fastener-to-application pairings
Automation, Test Equipment, and Safety
- Run through Domain 8 and Domain 10 scenario questions
- Reconfirm Domain 1 safety terminology - it's easy to overlook late in prep
Full Simulation and Logic Review
- Take one full-length timed practice run on the practice test platform
- Revisit Domain 2 problem-solving scenarios missed on the simulation
This compressed schedule assumes you've already done the bulk of your learning. If you need the complete build-from-scratch plan, the BST Study Guide 2026 lays out a full-length preparation timeline rather than just a review week.
Renewal and Maintenance Snapshot
Passing the exam isn't the finish line - the credential is valid for four years, and keeping it active requires one of two paths: 40 continuing-education hours or documented employer verification of continued work in the field. Either path also comes with $100 in maintenance fees across the cycle. Mark your renewal window on a calendar now; letting a four-year credential lapse means starting the exam process over.
Who This Cheat Sheet Is Built For
Basic Systems Technician certification is aimed at entry-level and early-career technicians working across electronics assembly, industrial maintenance, and systems installation environments - roles where a candidate needs to demonstrate baseline competency in wiring, power, tools, and troubleshooting before moving into more specialized technician tracks. Employers use it as a screening signal that a new hire understands core safety practices and won't need hand-holding on basic circuit or fastening tasks.
If you're weighing whether this credential fits your career plans, Is the BST Certification Worth It? walks through the return-on-investment question in more depth, and BST Jobs covers the kinds of roles that list this credential as a preferred or required qualification. For pay expectations tied to the credential, see the BST Salary Guide 2026.
New to the acronym or exploring whether this is the right certification path at all? Start with What Is BST Certification? or the shorter BST Meaning explainer before diving into domain-level prep.
FAQ
The stand-alone BST exam has 75 questions, and you have two hours to complete it.
You need 75% correct to pass. There is no hands-on or practical component - it's a knowledge-based exam only.
Yes. You may bring a non-programmable or scientific calculator, along with ETA's Common Formulas Sheet and scratch paper.
The exam fee is $80. This does not include any study materials or future renewal/maintenance fees.
The credential is valid for four years. Renewal requires either 40 continuing-education hours or employer verification of continued relevant work, plus $100 in maintenance fees over the cycle.
Keep this page bookmarked as your quick-reference sheet, but pair it with real practice questions before test day - run a timed simulation on the BST practice test platform to see how these ten domains actually feel under exam conditions.