Gadgetskingdom / uxcell DPDT Keyboard Switch — Pseudo Datasheet

Status: Pseudo datasheet derived from marketplace listing metadata Project: Enigma-NG Author: Izzyonstage & GitHub Copilot Version: v0.1.0 Last Updated: 2026-04-20 Source Listing: eBay item 365271584375 Seller: gadgetskingdom Brand Shown on Listing: uxcell Listing Title: Momentary Push Button Switch DPDT 2 Pole 6 Pin 1 Position 2pcs Original URL: https://www.ebay.co.uk/itm/365271584375

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1. Purpose

This document captures the technical details that could be recovered from the marketplace listing for the custom keyboard switch already purchased for the Enigma-NG HID assembly. It is not a manufacturer-issued datasheet and must be treated as a project-side reference only.

Use this part only where a custom, single-source marketplace switch is acceptable and where a full component qualification trail is not available.

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2. Intended Enigma-NG Use

• Assembly: design/Mechanical/Keyboard_Assembly/Design_Spec.md
• Board interface: design/Electronics/Encoder/Design_Spec.md
• Function: HID keyboard switch for the QWERTY-derived 40-position operator panel
• System quantity: 40 switches total
• Electrical use in Enigma-NG: only Pole 1 is used electrically (COM1 + NO1); the second pole is retained for mechanical anchoring only

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3. Observed Listing Specifications

The following values were extracted directly from the eBay listing HTML:

Parameter	Value from listing
Switch operation	Momentary
Contact configuration	DPDT
Position quantity	1
Terminal type	Straight through-hole
Pin quantity	6
Pin pitch	4 mm
End width	9 mm
Mounting pillar distance	5 mm
Cap mounting part	8 mm × 3.3 mm
Overall size	42 mm × 9.7 mm × 18 mm
Materials	Plastic, metal
Pack quantity	2 pieces

Listing description text:

Momentary contact, 6 pins, DIP through hole mounting. Used in the fields of electronic products, household appliances and more. High precision mechanism design offers acute operation and long service life.

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4. Enigma-NG Integration Notes

Attribute	Enigma-NG usage note
Contact style	Treat as a normally-open momentary key input on Pole 1
Mounting	Keyboard-panel mounted with harness wiring back to Encoder spade inputs
Logic interface	Active-low key input to Encoder CPLD (COM1 -> input, NO1 -> GND)
Pole 2	Do not assign an electrical net unless a future decision explicitly reuses it
Panel role	Custom keyboard key actuator, not a general-purpose front-panel pushbutton

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5. Known Unknowns / Unverified Parameters

The listing did not provide a trustworthy manufacturer datasheet for these items:

• Contact voltage / current rating
• Contact material and plating
• Operating force
• Travel distance
• Mechanical life / electrical life
• Insulation resistance / dielectric withstand
• Operating temperature range
• Exact manufacturer part number
• Compliance data (RoHS, REACH, UL, etc.)
• Tolerance on the quoted dimensions

These values remain unverified and should not be invented elsewhere in the design docs.

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6. Procurement and Risk Notes

• This is a single-source marketplace part rather than a catalogue component with a stable MPN.
• The seller name and the visible brand (uxcell) may change independently of the physical part.
• Additional spare stock should be retained once the keyboard panel design is frozen.
• If long-term maintainability becomes more important than preserving the already purchased hardware, this part should be revisited as a future sourcing/risk-reduction task.

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7. Document Status

This pseudo datasheet is sufficient to preserve the currently known dimensions and switching style for the purchased Enigma-NG keyboard switches. It does not replace a real manufacturer datasheet.