An HDMI to MIPI DSI adapter does not have one standard weight. The useful answer is the weight of a specific SKU in a specific packing state: bare driver board, board set with FPC cable and small display connection board, board inside an enclosure, or packed shipping weight. For DisplayModule’s hdmi to mipi dsi display adapter, the public datasheet does not list a weight. If a project needs a gram-level value, ask the supplier for the exact board revision and packing condition, or weigh the sample that will actually go into the product.
Ask for the right weight number
Instead of asking for “the adapter weight” as one value, separate these four numbers:
- Bare driver board net weight: the main PCB only, without cables, display sub-board, screws, foam, or retail packaging.
- Standard kit net weight: the driver board plus the supplied FPC cable and display connection board.
- Installed assembly weight: the adapter plus any bracket, enclosure, heat spreader, longer cable, adhesive, or mounting hardware.
- Packed gross weight: the unit as shipped, including bag, box, padding, labels, and accessories. This is useful for freight, but it is not the same as PCB weight.
Why boards with similar dimensions can weigh differently
The DisplayModule datasheet gives a mechanical outline for DM-ADTTR-014, but dimensions alone are not enough to derive a trustworthy weight. Two boards with similar length and width can differ because of PCB thickness, copper weight, layer count, connector metal, shield cans, backlight circuitry, test headers, daughter boards, cable length, and whether a case or bracket is included. Even the same model can change if the supplier revises connectors or bundled accessories. That is why a mechanical drawing helps with enclosure fit, while a verified net-weight line or a sample measurement is still needed for mass budgeting.
| Item to include | Why it changes the number | How to record it |
|---|---|---|
| Main adapter PCB | Board thickness, copper distribution, connector shells, and component population vary by revision. | Record model, revision, and whether the unit is bare or populated. |
| FPC cable | Length, stiffeners, shielding, and connector style can add weight even when the PCB is unchanged. | Record cable length and part number. |
| Display connection board | Some kits include a small intermediary board; omitting it makes the kit weight look artificially low. | Weigh it separately and as part of the kit. |
| Enclosure or bracket | Plastic, aluminum, screws, and heat spreaders can outweigh a small bridge PCB. | Separate engineering-sample weight from final installed weight. |
| Retail or shipping package | Foam, cartons, bags, and accessories are relevant to logistics but not embedded mechanical load. | Use gross weight only for freight and warehouse planning. |
A practical measuring method
- Use a calibrated digital scale with at least 0.1 g resolution. For very small sub-boards, weigh several identical units together and divide by the quantity.
- Zero the scale with the tray or anti-static bag removed unless the bag is part of the recorded condition.
- Weigh the bare driver board, the supplied cable, the display connection board, and then the complete kit.
- Photograph each weighing setup with the SKU label or board marking visible, so purchasing and engineering teams know what was measured.
- Repeat after any change in cable length, connector, enclosure, shielding, or supplier revision.
How to use weight in a design decision
For most bench prototypes, the difference between a bare PCB and a board set with cables is less important than connector direction, power stability, and firmware compatibility. Weight becomes important when the adapter hangs from a display, sits inside a handheld enclosure, rides on a moving assembly, or ships in volume. In those cases, use three separate values in the design file: PCB net weight for mounting stress, installed assembly weight for vibration and balance, and packed gross weight for shipping cost.
If a vendor listing gives only a rounded logistics number, treat it as a shipping estimate. For procurement, ask the supplier to confirm the net weight of the bare driver board, the weight of each included cable or connection board, and the packed gross weight per unit or carton. That gives mechanical, purchasing, and shipping teams the right number for their own decision instead of forcing one “adapter weight” to do every job.