The short answer
What this setting controls
The card changes appearance at defined humidity levels and is normally used with sealed moisture-barrier packaging and desiccant.
Use it as one element of the moisture-sensitive-device handling plan. Define packaging, desiccant, seal, exposure limit, receiving inspection and any required baking process.
Options in the order form
How the available choices differ
| Choice | Use it for | Engineering note |
|---|---|---|
| Recommended / default | Builds without a documented exception | Keeps the current compatible process path. |
| Alternative selection | A released drawing, stack-up or assembly plan requires it | Recheck every dependent option after changing humidity indicator card. |
Compatibility
What can change with this selection
- The card is not a substitute for correct MSL handling.
- Assembly options can make the card unavailable.
- If the page disables a choice, treat it as a compatibility result and adjust the controlling design decision rather than forcing the value.
Practical recommendation
How to make the decision
- Request it when stored boards or assemblies need moisture-control evidence.
- Inspect the card immediately when the package is opened.
- Record the result if it is part of incoming inspection.
Before release
Check these points before adding the quote to cart
- Confirm the selected value matches the released Gerber, drawing, stack-up, BOM or assembly plan.
- Review any fields that changed automatically after this selection.
- Check the board preview and server-calculated estimate before adding the quote to cart.
- Request it when stored boards or assemblies need moisture-control evidence.
- Inspect the card immediately when the package is opened.
- Record the result if it is part of incoming inspection.
Frequently asked questions
Answers for ordering and design review
What should I do if I am unsure about Humidity indicator card?
Keep the safe compatible default and add a concise question in Special instructions, or ask the TekRabbits concierge for guidance.
When should I change Humidity indicator card?
Change it when the released electrical, mechanical, thermal, assembly or quality plan gives a measurable reason. Otherwise keep the compatible default and review the resulting board preview and estimate.
Why is an option disabled?
The current material, geometry, layer count, quantity or another selected process makes that combination unavailable. Change the controlling selection or revise the design package rather than trying to bypass the disabled state.
Can I rely on the online choice as final manufacturing approval?
No. The interface screens known combinations and requests pricing, while final manufacturability remains subject to the released files and technical review.
What should I record outside the order form?
Put controlled requirements in the fabrication drawing, assembly drawing, stack-up, BOM or acceptance plan. Use Special instructions only for a concise pointer to that controlled requirement.
Will changing this update other selections?
It can. The order form re-evaluates compatibility and may replace a now-invalid dependent choice before requesting a fresh server-side estimate. Review every highlighted or automatically changed field.
What if the design requires an option that is not offered?
Do not approximate it with a different label. Recheck the controlling material and geometry, document the actual requirement, and request technical review before placing the order.
Further reading
Standards and technical references
Use the latest applicable revision and your organisation’s controlled requirements when a standard forms part of product acceptance.