component
sl401
Public Unreviewedby Ray
Slkor SLKORMICRO Elec LED Drivers, SOT-23-6. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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markdownSL401
Slkor SLKORMICRO Elec · LED Drivers · SOT-23-6
SL401 from Slkor SLKORMICRO Elec, 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 | GND | power_in | Reference ground return for the device. |
| 2 | RQ | output | Open-drain reset/status output. Toggles based on Vout thresholds (typical VRQH ~5.05-5.6 V rising, VRQL ~4.1-4.85 V falling); requires an external pull-up (e.g. to a 5 V rail via a resistor) to drive an MCU input. |
| 3 | EN | input | Enable input. VthH typical 2.90 V, VthL typical 1.60 V; maximum 7 V. Ton ≤10 µs, Toff ≤1 µs (RL<1 kΩ). |
| 4 | Vs | power_in | Positive supply input. Operating range 4 V to 42 V (absolute max 42 V). Quiescent current Iq ≈120-200 µA (EN=0 V, Vs=10 V). |
| 5 | OUT | output | Constant-current output to the LED cathode side. Default Iout ≈10 mA, adjustable via Rext up to 65 mA (100 mA abs max). Minimum saturation drop VSmin ≈1.4 V at 10 mA; maximum output voltage 40 V. |
| 6 | Rext | passive | External bias-resistor pin used to program the constant output current above the 10 mA default (up to 65 mA). Vdrop across Rext is typically 0.91 V at Iout=10 mA; internal reference resistance Rint ≈78-104 Ω. Leave open to use the default 10 mA setting. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Slkor SLKORMICRO Elec |
| Package | SOT-23-6 |
| Category | LED-drv |
| Pins | 6 |
CAD (KiCad official)
- Symbol:
SL401 - Footprint:
Package_TO_SOT_SMD:SOT-23-6 - 3D model: SOT-23-6 (KiCad packages3D, STEP)
3D model downloads
Two STEP files. Same geometry, different body top:
| File | Size | Use it when |
|---|---|---|
sl401.step |
97 KB | You want the bare part, or you mark your own boards. |
sl401-etched.step |
1.1 MB | You want the part with SL401 already on it. |
The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 289 faces against 117 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Slkor SLKORMICRO Elec datasheet (15 pp, sha256
3d774037c9f4e237, 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).