component

RH6618T

Public Made by Adom

by adom

RONGHE Microelectronics LED Drivers, SOT-23-6. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

componentled-drvrh6618t
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
Download ZIP Propose a change
Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs rh6618t: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray 1mo ago
package.json Publish 0.2.0 · Ray 1mo ago
pads.json pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray 1mo ago
page.json Brief states the pinout check that actually ran (was an unconditional "Datasheet-verified pinout") · Ray 11d ago
README.md rh6618t: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray 15d ago
rh6618t-etched.fit.json rh6618t: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
rh6618t-etched.glb rh6618t: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
rh6618t-etched.step rh6618t: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
rh6618t.glb Publish 0.1.0 · Ray 1mo ago
rh6618t.kicad_mod Publish 0.1.0 · Ray 1mo ago
rh6618t.kicad_sym Publish 0.1.0 · Ray 1mo ago
rh6618t.lbr rebuild the library on adom-lbr 2.32.0. The published copy was built by 2.18.0, which imported every KiCad roundrect and oval pad as a SQUARE EAGLE smd; this carries the real pad shape across (0 -> 6 rounded pads) and stops dropping geometry drawn on KiCad User.N layers. Attributes, connects, pads and the pin-1 marker are gated against decreasing and are unchanged. · Ray 1mo ago
rh6618t.step Publish 0.1.0 · Ray 1mo ago

RH6618T

RONGHE Microelectronics · LED Drivers · SOT-23-6

RH6618T from RONGHE Microelectronics, 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 VDD power_in Positive supply. Operating range 2.4V to 5.5V (absolute max -0.3V to 5.5V). Bypass with 10uF + 0.1uF close to the pin.
2 GND power_in Negative supply / ground reference.
3 CMOD bidirectional Sampling capacitor pin. Connect Cm (typ. 15nF; recommended 2.2nF~47nF, up to 1uF) between CMOD and GND to set touch sensitivity. Use a low-tempco X7R/NPO capacitor and place away from heat sources.
4 POUT output Push-pull CMOS PWM output driving the external LED transistor. PWM frequency 25kHz (step-less) or 33kHz (3-level). Drive strength ~65mA IOL @ VDD=5V (VOL=0.3VDD), ~32mA IOH @ VDD=5V (VOH=0.7VDD).
5 MOD1 input Mode configuration bit 1 with internal pull-up (CMOS input, default high). Tie to VDD (1) for step-less dimming with brightness memory (gradual on/off), or to GND (0) for 3-level dimming (OFF/MIN/MID/MAX cycle).
6 TCH bidirectional Touch input. Connect to the capacitive touch electrode via a series resistor Rs (recommended >=5.1k) for improved noise immunity. First-touch response ~200ms; subsequent touches ~80ms in fast mode.

Key specifications

Parameter Value
Manufacturer RONGHE Microelectronics
Package SOT-23-6
Category LED-drv
Pins 6

Ordering variants

Same part, different packaging or reel option.

  • RH6618T
  • RH6618A
  • RH6618B

CAD (KiCad official)

  • Symbol: RH6618T
  • Footprint: Package_TO_SOT_SMD:SOT-23-6
  • 3D model: SOT-23-6 (KiCad packages3D, STEP)
  • 3D model files: rh6618t-etched.step / rh6618t-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); rh6618t.step / rh6618t.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
rh6618t.step 97 KB You want the bare part, or you mark your own boards.
rh6618t-etched.step 1.6 MB You want the part with RH6618T already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 398 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: RONGHE Microelectronics datasheet (11 pp, sha256 b355c24c880eb4b8, 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).

Datasheet PDF