component
2021k
Public Unreviewedby Ray
Sam wing Touch Sensors, SOT-23-6. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
README
markdown2021K
Sam wing · Touch Sensors · SOT-23-6
2021K from Sam wing, in a SOT-23-6. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | TCH | input | Capacitive touch sensor input. Connects to the touch electrode/pad; the internal sensing algorithm detects a valid touch and toggles the OUT pin. Sensitivity is set by the Cm capacitor on CSEL. |
| 2 | VSS | power_in | Ground/negative supply return (0 V). All bypass capacitors and the CSEL sampling capacitor Cm return to this rail. |
| 3 | CSEL | passive | Sampling capacitor input. An external NPO capacitor Cm to VSS sets touch sensitivity - typical values 10 nF (≤3 mm acrylic), 20 nF (3-6 mm acrylic), 33 nF (direct-touch metal), or 47 nF (6-10 mm acrylic). Larger Cm increases sensitivity. |
| 4 | MD | input | Output initial-state select, sampled at power-up. Tie to VDD for OUT to power up high; tie to VSS for OUT to power up low. Floating defaults to high. |
| 5 | VDD | power_in | Positive supply input, 2.4-5.5 V operating range (absolute max +6.0 V). Decouple with 10 uF bulk and 0.1 uF ceramic to VSS as shown in the typical application circuit. |
| 6 | OUT | output | Synchronous switch output. Toggles state each time TCH detects a valid touch and reverts to the MD-programmed initial state when released. Drives up to −12 mA source (VOH=2/3 VDD) and 28 mA sink (VOL=1/3 VDD) at VDD=5 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Sam wing |
| Package | SOT-23-6 |
| Category | Sensor |
| Pins | 6 |
Ordering variants
2021KT06
CAD (KiCad official)
- Symbol:
2021K - Footprint:
Package_TO_SOT_SMD:SOT-23-6 - 3D model: SOT-23-6 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Sam wing datasheet (None pp, sha256
e802a1133cf1fcd9, retrieved 2026-08-17, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).