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RH7901A

Public Made by Adom

by adom

RONGHE Microelectronics USB Converters, SOT-23-5L. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs rh7901a: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 5d ago
viewers rh7901a: viewers · Ray 1mo ago
package.json Publish 0.2.0 · Ray 1mo ago
page.json rh7901a: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray 16h ago
README.md rh7901a: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray 16d ago
rh7901a-etched.fit.json rh7901a: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 5d ago
rh7901a-etched.glb rh7901a: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 5d ago
rh7901a-etched.step rh7901a: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 5d ago
rh7901a.glb Publish 0.1.0 · Ray 1mo ago
rh7901a.kicad_mod Publish 0.1.0 · Ray 1mo ago
rh7901a.kicad_sym Publish 0.1.0 · Ray 1mo ago
rh7901a.lbr Publish 0.1.0 · Ray 1mo ago
rh7901a.step Publish 0.1.0 · Ray 1mo ago

RH7901A

RONGHE Microelectronics · USB Converters · SOT-23-5L

RH7901A from RONGHE Microelectronics, in a SOT-23-5L. 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 NC unconnected No internal connection. On the base RH7901 variant this pin is the CB configuration input, but on RH7901A the Divider3 protocol is fixed internally so the pin is left unconnected.
2 GND power_in Negative supply / ground reference (0 V).
3 VDD power_in Positive supply pin. Operating range 4.5 V to 5.5 V (typ 5.0 V), typical operating current 140 uA, LVR threshold 4.0 V.
4 DP bidirectional Connects to the USB port's D+ or D- line (see application circuit). In fixed Divider3 (12W) mode the DP/DM to D+/D- connection order is unrestricted. Drives 2.7 V nominal for Divider3 handshake. ESD >8 kV HBM.
5 DM bidirectional Connects to the USB port's D- or D+ line (see application circuit). In fixed Divider3 (12W) mode the DP/DM to D+/D- connection order is unrestricted. Drives 2.0 V nominal for the paired handshake voltage. ESD >8 kV HBM.

Key specifications

Parameter Value
Manufacturer RONGHE Microelectronics
Package SOT-23-5L
Category Interface
Pins 5

Ordering variants

Same part, different packaging or reel option.

  • RH7901A
  • RH7902
  • RH7902A
  • RH7902B

CAD (KiCad official)

  • Symbol: RH7901A
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5L (KiCad packages3D, STEP)
  • 3D model files: rh7901a-etched.step / rh7901a-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); rh7901a.step / rh7901a.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
rh7901a.step 85 KB You want the bare part, or you mark your own boards.
rh7901a-etched.step 1.3 MB You want the part with RH7901A already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 340 faces against 102 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 (9 pp, sha256 3b28b7a4e97633ee, 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