USB Type-C Receptacle, Power Only, SMT - GCT USB4135-GF-A
Public Made by Adomby adom
GCT USB4135-GF-A: horizontal SMT USB Type-C receptacle for power and charging only (VBUS, CC1, CC2, GND), 3 A, 4 SMT shell stakes.
3D Model
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Contents
README
markdownGCT USB4135-GF-A
A horizontal (right-angle) surface-mount USB Type-C receptacle for power and charging only. It carries the six contacts a sink needs to draw power from a Type-C source (VBUS, CC1, CC2, GND) and none of the USB 2.0 or SuperSpeed data pairs. Four SMT shell stakes hold it to the board.
Key specifications
| Source | ||
|---|---|---|
| Contacts | 6: VBUS (A9, B9), CC1 (A5), CC2 (B5), GND (A12, B12) | Drawing, pin table |
| Current rating | 3.00 A collectively on VBUS; 4.25 A on GND; 1.25 A VCONN on A5/B5 | Spec 4.1 |
| Voltage rating | 48 V DC | Spec 4.2 |
| Operating temperature | -30 to +85 C | Spec 4.3 |
| Contact resistance | 40 mOhm max, initial | Spec 6.1.1 |
| Durability | 20,000 cycles | Spec 6.2 |
| Materials | LCP insulator (UL 94V-0), copper alloy contacts with gold flash, stainless steel shell | Drawing |
| Mating sequence | VBUS and GND first, CC second | Drawing, pin table |
Using it as a power sink
A Type-C source only turns VBUS on after it sees a sink pull-down on a CC line. Put a 5.1 kOhm (Rd) resistor from each of CC1 and CC2 to GND; plug orientation decides which one the source reads. That gets you default USB power (5 V). Negotiating more current or voltage needs a USB PD controller on the CC lines.
Footprint
Pads follow GCT's Recommended PCB Layout (tolerance 0.05 mm): six 1.20 mm long signal pads (0.70 mm wide for CC, 0.76 mm for VBUS, 0.80 mm for GND) and four shell stakes (1.80 x 1.35 mm rear, 1.80 x 1.50 mm front). The mating face points toward +Y in KiCad and is meant to sit at, or overhang, the board edge. The Dwgs.User line marks the front of the shell.
The footprint carries the Adom solder-ball layer (KiCad User.9, named Adom.SolderBalls,
EAGLE/Fusion layer 101): 156 jetted 300 um balls at 0.25 mm pitch, 8 per signal pad and 24 or 30
per stake, per john/adom-solder-ball-layer-standard.
The positions are also in usb4135-gf-a.solder-balls.json. The layer is hidden by default in
the 3D viewer; turn on Solder balls in the layers panel to see them.
3D footprint reference
The page's 3D model is usb4135-gf-a-hero-footprint.glb: the connector plus nonphysical
reference artwork on the seating plane, per the Adom component hero contract. Copper pad
boundaries are teal dashed outlines at 50% opacity, silkscreen lines are at 30%, and each pad
carries its signal name from the GCT pin table at 50% (VBUS, CC1, CC2, GND, SHIELD). Orbit
underneath to see the outlines around the contact tails and shell stakes. Each group is its own
layer in the viewer's Layers panel. Geometry, hashes and label positions are in
usb4135-gf-a-hero-footprint.overlay.json.
These helpers are hero-only. For a board assembly use usb4135-gf-a.glb or the STEP, which
carry no footprint artwork.
Files
| File | What it is |
|---|---|
usb4135-gf-a.kicad_sym |
KiCad symbol, pins named from the GCT pin table |
usb4135-gf-a.kicad_mod |
KiCad footprint with the solder-ball layer |
usb4135-gf-a.lbr |
Fusion 360 / EAGLE library (lint clean, SolderBalls layer 101) |
usb4135-gf-a.adom-lbr.json |
Canonical adom-lbr part (symbol + footprint + pin map) |
usb4135-gf-a.step |
3D model, Z-up at the footprint origin |
usb4135-gf-a.glb |
Board-use web model with the hidden solder_top layer |
usb4135-gf-a-hero-footprint.glb |
Page model: connector plus dashed pad outlines, silkscreen and signal names |
usb4135-gf-a-hero-footprint.overlay.json / hero-pin-map.json |
Evidence and pin-to-pad names for that artwork |
usb4135-gf-a.solder-balls.json |
Solder-ball positions per pad |
docs/usb4135-gf-a-drawing.pdf |
GCT product drawing |
docs/usb4135-product-spec.pdf |
GCT product specification |
Provenance
- Drawing and product specification downloaded from gct.co on 17 September 2026
(
usb4135.pdfmd5c7a4f913...,usb4135-spec.pdfmd535239e40...). - Footprint pads were written from the drawing and match the USB4135-GF-A Fusion library package pad for pad.
- The 3D body is the
USB4135-GF-A v1model from that Fusion library, taken from a board STEP with its placement transform, so it is already seated and aligned to this footprint. GCT's own STEP download was not reachable from a script (Cloudflare challenge).
Related
- Used on adonis/nametag-blank-large-led