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PlanetISO
IPC and J-STD electronics assemblyAwarenessFoundation

Moisture-Sensitive Devices: J-STD-020 and J-STD-033

Floor life, dry packs, baking and the popcorn failure you never see at test

Duration
1.5 hours
Modules
4
Final exam
70% to pass
Certificate
No expiry
$59
  • Lifetime access to the course and your certificate
  • Verifiable Certificate of Completion. Certificate does not expire.
  • 3 exam attempts
  • Progress saved to your account on every slide
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$250.75

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Each seat is a single-use code. Send one to each learner; they sign in with their own account and earn their own certificate. Track progress on your Team page.

About this course

A plastic-packaged component sitting on a bench absorbs moisture from the air. When it goes through reflow, that moisture turns to steam inside the package faster than it can escape. The package delaminates or cracks, bond wires lift, and the part may still pass every electrical test before it fails in an aircraft, a radar or a patient monitor months later. This course explains that failure and the two standards that prevent it.

You will learn what J-STD-020 does (the manufacturer classifies the device into a moisture sensitivity level) and what J-STD-033 does (you handle, store, bake and reseal it according to that level). You will learn to read the level scale and the caution label, what floor life means and when the clock starts, how to read a humidity indicator card, what the desiccant and moisture barrier bag do, and where J-STD-075 fits for components that are not integrated circuits. The third module takes you onto the floor: opening a dry pack, starting and logging the clock, pausing exposure in dry storage, deciding when a bake is required and why baking is slow and limited, and resealing a part-used reel. The final module works through a reel left on the line over a weekend, a bake log with gaps and a customer asking for records, and explains what an auditor checks.

The course is for SMT line operators, feeder setters, stores and kitting staff, goods-in inspectors, rework technicians, process engineers and quality staff at aerospace, defense and medical electronics assemblers. It teaches awareness of the standards' requirements; your site's procedure governs the details. No prior knowledge is needed.

The course closes with a 10-question examination drawn from a bank of 20. On passing you receive a PlanetISO Certificate of Completion with lifetime access to the course. The certificate does not expire.

What you will be able to do

  • Explain how absorbed moisture causes delamination, cracking and latent failure during reflow.
  • Distinguish what J-STD-020 requires of the component manufacturer from what J-STD-033 requires of the assembler.
  • Interpret the moisture sensitivity level scale, the caution label and the floor life that applies to a part.
  • Read a humidity indicator card and decide whether a received dry pack is acceptable.
  • Open, log, pause, bake and reseal moisture-sensitive devices in line with J-STD-033 principles and your site procedure.
  • Recognise when exposure is unknown or exceeded, stop, and escalate to the right person.
  • Describe the records an auditor or customer expects for moisture-sensitive device control.

Course outline

  1. 1

    Why moisture matters

    How a plastic package absorbs moisture, what reflow does to it, why the damage is often invisible at test, and what J-STD-020 and J-STD-033 each do.

    About 20 minutes, then a module quiz

  2. 2

    Moisture sensitivity levels in plain language

    The level scale from unlimited to bake-before-use, where the level is found, how floor life is counted, the dry pack and its humidity indicator card, and J-STD-075 for non-IC components.

    About 22 minutes, then a module quiz

  3. 3

    On the floor: opening, logging, pausing, baking and resealing

    The practical sequence for a moisture-sensitive reel or tray: what to do when the bag is opened, how exposure is logged, how the clock is paused, when a bake is required and why it is slow and limited, and how to reseal.

    About 25 minutes, then a module quiz

  4. 4

    Scenarios and audits

    A reel left over the weekend, a bake log with gaps and a customer asking for records: what good practice looks like, what an auditor checks, and the responsibilities every handler owns.

    About 20 minutes, then a module quiz

  5. Final examination and certificate

    10 questions drawn from the course bank. Score 70% or higher to receive your Certificate of Completion.

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