| Quantity: | |
|---|---|
Why ESD hollow panels get specified for board-level electronics
 |  |  |
In-plant moves: SMT magazines and bare boards carried between lines on ESD trays and dividers that do not scrape the solder mask.
Component storage: conductive bins for loose parts, each one labelled with the resistivity measured on the sheet it was cut from.
Outbound crates: returnable boxes for drives and controllers, with a printable face for customer labels and barcodes.
Workbench surrounds: temporary partitions and back panels that bleed a charge instead of holding it next to an open board.
| ESD grades are what most of this family ships as. Surface resistivity is held between 10^4 and 10^6 ohm for conductive and 10^6 to 10^9 for dissipative, and a sample from every batch is measured before the sheets are packed. The board is twin-wall PP with a corona-treated face at 46 dyne or better, so a conductive ink or a customer label prints without primer. Thickness runs 2 to 12 mm, and 4 mm covers most trays and 8 mm most crates. |  |
 | What the sheet will not do: it does not shield a board from a strong external field the way a metalised bag does, and the ESD additive wears back under heavy abrasion. Where a panel will be dragged across concrete, we quote a thicker grade or a different material rather than promise a resistivity the surface cannot hold. Edges are sealed on request, because an open flute collects dust and the dust changes the reading. |
 | Every crate leaves with its measured resistivity on the label, and the reading is repeated on the batch record rather than taken once at the start of a run. The photograph is from the 2025 Indonesia Industrial Exhibition, where the questions had moved from whether an ESD board works to how long the additive lasts. |  |
