What IPC-CC-830 Is (And What It Isn't)
IPC-CC-830 is the qualification standard for conformal coating materials — the liquid polymer applied to PCB assemblies to protect them from moisture, dust, chemicals, and temperature extremes. It defines the tests a coating material must pass to be considered suitable for electronics protection.
It is important to understand what IPC-CC-830 does NOT cover: - It does NOT define how to apply the coating (that's a process specification) - It does NOT define how to inspect applied coating (that's done per IPC-A-610 and visual criteria) - It does NOT certify a coating for a specific application (material qualification ≠ product qualification)
IPC-CC-830 tells you: "This coating material, if applied correctly, will provide the protection its datasheet claims." The actual protection depends on correct application, complete coverage, and appropriate thickness — all verified by our conformal coating inspection station (TAB2).
What IPC-CC-830 Tests
To qualify a coating material to IPC-CC-830, the material must pass a battery of standardized tests on coated test coupons:
| Test | What It Measures | Why It Matters |
|---|---|---|
| Dielectric withstand voltage | Voltage the coating can withstand without breakdown | Coating must not conduct electricity between closely spaced conductors, even at elevated voltages |
| Moisture and insulation resistance (MIR) | Electrical resistance of the coating after exposure to 85°C/85% RH for 7 days | The primary failure mode: moisture absorption reducing insulation resistance, causing leakage currents |
| Thermal shock | Coating integrity after -65°C to +125°C cycling | Coating must not crack or delaminate under thermal expansion/contraction |
| Thermal endurance | Coating stability after prolonged elevated temperature exposure | Coating must not become brittle, discolored, or lose adhesion over time |
| Flexibility | Coating's ability to withstand board flex without cracking | Boards flex during handling, mounting, and thermal cycling |
| Flammability | Coating's resistance to ignition and flame spread | Safety requirement for products in enclosed spaces |
| Fungus resistance | Coating's ability to resist fungal growth | Important for tropical and marine environments |
| Solderability (after coating) | Whether components can be soldered after coating is applied | For rework — can you solder through or remove the coating? |
Coating Types We Use
At Superb Automation, we stock and apply three coating types, all from IPC-CC-830 qualified manufacturers (HumiSeal and Electrolube):
| Type | Chemistry | Best For | Limitations |
|---|---|---|---|
| Acrylic (AR) | Solvent-based thermoplastic | General-purpose moisture and dust protection. Easy to apply, easy to remove for rework. | Limited chemical resistance. Softens above 125°C. |
| Silicone (SR) | Solvent-based or RTV elastomer | High-temperature applications (up to 200°C), high flexibility, good chemical resistance. | Difficult to remove for rework. Longer curing time. |
| Polyurethane (UR) | Single or two-part thermoset | Excellent chemical and abrasion resistance. Best for harsh chemical environments. | Difficult to remove. Requires humidity during cure. |
For most orders, acrylic is the default unless the application environment requires silicone or polyurethane.
What IPC-CC-830 Means for Your Boards
When you specify conformal coating on your order, you are getting:
Coating material qualified to IPC-CC-830 from a recognized manufacturer (HumiSeal or Electrolube) — not an unbranded generic.
Application by selective robotic spray with verified coverage and thickness (see TAB2 Conformal Coating Inspection).
Traceability — each coated batch is linked to the coating material lot number for future reference.
If your product will be exposed to moisture, salt spray, dust, or chemicals, conformal coating is one of the most cost-effective reliability investments you can make. The material cost is a fraction of a cent per board — pinhole coverage verification is where the cost is. We do both.
See also: Conformal Coating Inspection (TAB2) for how we verify coverage.
