How to Specify a UDP Module Order
A UDP module is quoted against a design, not against a catalogue entry. Six things have to be fixed first: the host interface version, the capacity, the mechanical length that fits your enclosure, the controller solution matched to your host, whether the part carries a device identity, and the reflow profile your assembly line can actually run. Get those six settled and the rest is confirmation rather than negotiation. If you cannot fix the length yet, say so — the modules run in more than one length and it is cheaper to settle it before tooling than after.
The six lines that set the quotation
| Line | Options | Why it matters |
|---|---|---|
| Host interface | USB 2.0 or USB 3.0 | Sets the transfer ceiling in your product — not the connector shape |
| Capacity | 128MB to 128GB | Drives die selection and cost, and may run out in tight supply |
| Mechanical length | Confirmed against your drawing | The module is 11.3 × 24.8 × 1.45 mm overall, but the board length varies |
| Controller solution | Alcor, ITE, Xinbang, Micov | Host compatibility and enumeration behaviour on your board |
| Device identity | PID/VID or neutral | Whether the host recognises your product or a generic one |
| Reflow profile | Stated by your assembler | The part is soldered, so the profile has to suit it |
Interface — ask for the version, not the connector
USB Disk in Package is a physical format, not a network protocol, and the USB in the name describes the interface. A USB-C connector on a module says nothing about the speed behind it. If the interface version matters to your product, have it stated on the specification and the drawing rather than inferred from the connector.
Mechanical clearance — the usual blocker
A UDP module is soldered, so the envelope has to exist in your design before anything else. Send the enclosure drawing or the available footprint and the length gets confirmed against it. This is the single item most often left open, and it is the one that costs time if it is left open after tooling.
- Overall size: 11.3 × 24.8 × 1.45 mm
- Weight: 0.819 g, which matters for handheld or wearable products
- Solder-down, so there is no housing and no removable part to design for
Device identity and firmware
- A PID/VID pair makes the host see your product rather than a generic drive
- Firmware behaviour — whether the part enumerates as a mass storage device, and how it handles bad blocks
- Whether the content is pre-loaded at the factory, if your product ships with data already on it
What we provide for design review
Send your integration requirements — host interface, capacity, speed and mechanical clearance — and we will supply the matching specification and drawing so the part can go through your design review rather than around it.
Send your requirement
We reply to business enquiries within 1 business day. If you are comparing suppliers, send the specification you were quoted — it makes the comparison meaningful.
Request a quoteFrequently asked questions
Do you supply a datasheet?
Yes. Send your integration requirements and we will provide the matching specification and drawing for your design review.
Can the module be pre-loaded with content?
Yes, if your product ships with data on it. Say what has to be pre-loaded and we will confirm the method and how it is verified before packing.
What is the minimum order quantity?
MOQ depends on capacity, controller solution and how much customisation is involved. Share your specification and we will confirm MOQ with the quotation.
Is UDP the same as User Datagram Protocol?
No. UDP here means USB Disk in Package — a physical format. If you were looking for the network protocol, that is a different subject entirely.