component
USBLC6-2SC6
Public Unreviewedby adom
USBLC6-2SC6 with source-traceable pin map and explicitly nominal drawing-led CAD.
← Commit history
Publish 0.1.0
8 files changed
+859−9
README.md+46−2@@ -1,5 +1,49 @@ # USBLC6-2SC6 -USB ESD protection, bidirectional, SOT-23-6+**STMicroelectronics** · USB ESD protection array · SOT-23-6 -The USBLC6-2SC6 is a bidirectional ESD protection device from STMicroelectronics designed for USB lines. Protects against ±15kV (HBM) ESD with very low capacitance (1pF typical). Essential for USB interface protection.+Very-low-capacitance (3.5 pF max) ESD protection array dedicated to two high-speed data lines such as USB 2.0, in a SOT-23-6 package. Each I/O pair steers ESD strikes through internal diodes to GND or the VBUS rail, clamping the transient while adding little capacitance so signal integrity holds at USB speeds. IEC 61000-4-2 level 4 rated. Place it right at the connector across D+/D- with VBUS to the 5 V rail. The default USB port protector.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | I/O1 | passive | Protected data line 1 (e.g. USB D+ or D-). Bidirectional signal pin clamped by steering diodes to GND and VBUS; also tied to pin 6 (same net). Typical capacitance to GND 2.5 pF, max 3.5 pF at 1 MHz. |+| 2 | GND | power_in | Ground reference. Cathode return for the lower steering diodes and anode of the internal clamping Zener; must be connected to system ground with the shortest possible trace to minimize parasitic inductance during an ESD event. |+| 3 | I/O2 | passive | Protected data line 2 (e.g. USB D- or D+). Bidirectional signal pin clamped by steering diodes to GND and VBUS; also tied to pin 4 (same net). Typical capacitance to GND 2.5 pF, max 3.5 pF at 1 MHz. |+| 4 | I/O2 | passive | Second bond pad for the I/O2 data line; internally shorted to pin 3. Route the data line to either pin 3 or 4 (or both) as convenient for the PCB layout. |+| 5 | VBUS | power_in | Positive supply rail reference for the ESD clamp (typ +5 V for USB). Provides the upper rail for the steering diodes and is clamped to GND through the internal Zener; VBR = 6 V min at IF = 1 mA. Bypass to GND with a 100 nF capacitor placed close to the device for optimal ESD performance. |+| 6 | I/O1 | passive | Second bond pad for the I/O1 data line; internally shorted to pin 1. Route the data line to either pin 1 or 6 (or both) as convenient for the PCB layout. |++## Key specifications++| Parameter | Value |+|---|---|+| Type | USB ESD protection array (2 lines) |+| Line capacitance | 3.5 pF max (very low) |+| ESD rating | IEC 61000-4-2 level 4 (device level) |+| Leakage | 150 nA max |+| Protected lines | 2 (I/O1, I/O2) |+| Rail | VBUS clamp reference |+| Package | SOT-23-6 |+| Body (L×W×H) | 2.9 × 1.6 × 1.1 mm |++## Ordering variants++- `USBLC6-2SC6 (SOT-23-6, tape & reel)`++## CAD (KiCad official)++- Symbol: `Power_Protection:USBLC6-2SC6`+- Footprint: `Package_TO_SOT_SMD:SOT-23-6`+- 3D model: SOT-23-6 (KiCad packages3D)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [STMicroelectronics datasheet](http://www.stm32circle.com/resources/Datasheets/USBLC6-2SC6.PDF) (11 pp, sha256 `e593275721905c80`, retrieved 2026-08-17, tier: cse)+- **Extractor:** `ds2sf` (Claude) — every pin and dimension is cited to a datasheet page; refuses to fabricate.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/usblc6-2sc6-datasheet.pdf)
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package.jsonadded+30@@ -0,0 +1,30 @@+{+ "slug": "usblc6-2sc6",+ "version": "0.1.0",+ "type": "component",+ "description": "ST very-low-capacitance ESD protection for 2 data lines, SOT-23-6. 3.5 pF, IEC level 4. Datasheet-verified.",+ "tags": [+ "component",+ "esd-protection",+ "tvs",+ "usb",+ "sot-23-6",+ "stmicroelectronics"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "usblc6-2sc6.kicad_sym",+ "usblc6-2sc6.kicad_mod",+ "usblc6-2sc6.glb",+ "docs/hero.png",+ "docs/usblc6-2sc6-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ]+}
page.json+27−7@@ -4,8 +4,15 @@ "slug": "usblc6-2sc6", "title": "USBLC6-2SC6", "brief": "USB ESD protection, bidirectional, SOT-23-6",- "version": "1.0.0",- "tags": [],+ "version": "0.1.0",+ "tags": [+ "component",+ "esd-protection",+ "tvs",+ "usb",+ "sot-23-6",+ "stmicroelectronics"+ ], "license": "MIT", "component": { "mpn": "USBLC6-2SC6",@@ -20,18 +27,31 @@ }, "readme": "# USBLC6-2SC6\n\nUSB ESD protection, bidirectional, SOT-23-6\n\nThe USBLC6-2SC6 is a bidirectional ESD protection device from STMicroelectronics designed for USB lines. Protects against ±15kV (HBM) ESD with very low capacitance (1pF typical). Essential for USB interface protection.", "author": {- "id": "695820315b5f1e4db2fcf602", "name": "Kyle Bergstedt", "email": "[email protected]" },- "visibility": {- "public": true+ "visibility": "public",+ "hero": {+ "type": "image",+ "path": "docs/hero.png" },- "hero": null, "sample_prompts": [], "discovery_triggers": [], "discovery_pitch": null, "metadata": {}, "created_at": "2026-05-28T05:34:26.916Z",- "updated_at": "2026-05-28T05:34:26.916Z"+ "updated_at": "2026-05-28T05:34:26.916Z",+ "description": "ST very-low-capacitance ESD protection for 2 data lines, SOT-23-6. 3.5 pF, IEC level 4. Datasheet-verified.",+ "dependencies": {},+ "files": [+ "page.json",+ "README.md",+ "usblc6-2sc6.kicad_sym",+ "usblc6-2sc6.kicad_mod",+ "usblc6-2sc6.glb",+ "docs/hero.png",+ "docs/usblc6-2sc6-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ] }
usblc6-2sc6.glbadded⋯ 1 unchanged line ⋯
usblc6-2sc6.kicad_modadded+288@@ -0,0 +1,288 @@+(footprint "SOT-23-6"+ (version 20260206)+ (generator "kicad-footprint-generator")+ (layer "F.Cu")+ (descr "SOT, 6 Pin (JEDEC MO-178 Var AB https://www.jedec.org/document_search?search_api_views_fulltext=MO-178)")+ (tags "SOT TO_SOT_SMD")+ (property "Reference" "REF**"+ (at 0 -2.4 0)+ (layer "F.SilkS")+ (effects+ (font+ (size 1 1)+ (thickness 0.15)+ )+ )+ )+ (property "Value" "SOT-23-6"+ (at 0 2.4 0)+ (layer "F.Fab")+ (effects+ (font+ (size 1 1)+ (thickness 0.15)+ )+ )+ )+ (property "KiLib_Generator" "package/gullwing"+ (at 0 0 0)+ (layer "F.SilkS")+ (hide yes)+ (effects+ (font+ (size 1 1)+ (thickness 0.15)+ )+ )+ )+ (attr smd)+ (duplicate_pad_numbers_are_jumpers no)+ (fp_line+ (start -0.91 -1.56)+ (end 0.91 -1.56)+ (stroke+ (width 0.12)+ (type solid)+ )+ (layer "F.SilkS")+ )+ (fp_line+ (start -0.91 -1.51)+ (end -0.91 -1.56)+ (stroke+ (width 0.12)+ (type solid)+ )+ (layer "F.SilkS")+ )+ (fp_line+ (start -0.91 1.56)+ (end -0.91 1.51)+ (stroke+ (width 0.12)+ (type solid)+ )+ (layer "F.SilkS")+ )+ (fp_line+ (start 0.91 -1.56)+ (end 0.91 -1.51)+ (stroke+ (width 0.12)+ (type solid)+ )+ (layer "F.SilkS")+ )+ (fp_line+ (start 0.91 1.51)+ (end 0.91 1.56)+ (stroke+ (width 0.12)+ (type solid)+ )+ (layer "F.SilkS")+ )+ (fp_line+ (start 0.91 1.56)+ (end -0.91 1.56)+ (stroke+ (width 0.12)+ (type solid)+ )+ (layer "F.SilkS")+ )+ (fp_poly+ (pts+ (xy -1.45 -1.51)+ (xy -1.69 -1.84)+ (xy -1.21 -1.84)+ )+ (stroke+ (width 0.12)+ (type solid)+ )+ (fill yes)+ (layer "F.SilkS")+ )+ (fp_line+ (start -2.05 -1.5)+ (end -1.05 -1.5)+ (stroke+ (width 0.05)+ (type solid)+ )+ (layer "F.CrtYd")+ )+ (fp_line+ (start -2.05 1.5)+ (end -2.05 -1.5)+ (stroke+ (width 0.05)+ (type solid)+ )+ (layer "F.CrtYd")+ )+ (fp_line+ (start -1.05 -1.7)+ (end 1.05 -1.7)+ (stroke+ (width 0.05)+ (type solid)+ )+ (layer "F.CrtYd")+ )+ (fp_line+ (start -1.05 -1.5)+ (end -1.05 -1.7)+ (stroke+ (width 0.05)+ (type solid)+ )+ (layer "F.CrtYd")+ )+ (fp_line+ (start -1.05 1.5)+ (end -2.05 1.5)+ (stroke+ (width 0.05)+ (type solid)+ )+ (layer "F.CrtYd")+ )+ (fp_line+ (start -1.05 1.7)+ (end -1.05 1.5)+ (stroke+ (width 0.05)+ (type solid)+ )+ (layer "F.CrtYd")+ )+ (fp_line+ (start 1.05 -1.7)+ (end 1.05 -1.5)+ (stroke+ (width 0.05)+ (type solid)+ )+ (layer "F.CrtYd")+ )+ (fp_line+ (start 1.05 -1.5)+ (end 2.05 -1.5)+ (stroke+ (width 0.05)+ (type solid)+ )+ (layer "F.CrtYd")+ )+ (fp_line+ (start 1.05 1.5)+ (end 1.05 1.7)+ (stroke+ (width 0.05)+ (type solid)+ )+ (layer "F.CrtYd")+ )+ (fp_line+ (start 1.05 1.7)+ (end -1.05 1.7)+ (stroke+ (width 0.05)+ (type solid)+ )+ (layer "F.CrtYd")+ )+ (fp_line+ (start 2.05 -1.5)+ (end 2.05 1.5)+ (stroke+ (width 0.05)+ (type solid)+ )+ (layer "F.CrtYd")+ )+ (fp_line+ (start 2.05 1.5)+ (end 1.05 1.5)+ (stroke+ (width 0.05)+ (type solid)+ )+ (layer "F.CrtYd")+ )+ (fp_poly+ (pts+ (xy -0.4 -1.45)+ (xy 0.8 -1.45)+ (xy 0.8 1.45)+ (xy -0.8 1.45)+ (xy -0.8 -1.05)+ )+ (stroke+ (width 0.1)+ (type solid)+ )+ (fill no)+ (layer "F.Fab")+ )+ (fp_text user "${REFERENCE}"+ (at 0 0 90)+ (layer "F.Fab")+ (effects+ (font+ (size 0.72 0.72)+ (thickness 0.11)+ )+ )+ )+ (pad "1" smd roundrect+ (at -1.1375 -0.95)+ (size 1.325 0.6)+ (layers "F.Cu" "F.Mask" "F.Paste")+ (roundrect_rratio 0.25)+ )+ (pad "2" smd roundrect+ (at -1.1375 0)+ (size 1.325 0.6)+ (layers "F.Cu" "F.Mask" "F.Paste")+ (roundrect_rratio 0.25)+ )+ (pad "3" smd roundrect+ (at -1.1375 0.95)+ (size 1.325 0.6)+ (layers "F.Cu" "F.Mask" "F.Paste")+ (roundrect_rratio 0.25)+ )+ (pad "4" smd roundrect+ (at 1.1375 0.95)+ (size 1.325 0.6)+ (layers "F.Cu" "F.Mask" "F.Paste")+ (roundrect_rratio 0.25)+ )+ (pad "5" smd roundrect+ (at 1.1375 0)+ (size 1.325 0.6)+ (layers "F.Cu" "F.Mask" "F.Paste")+ (roundrect_rratio 0.25)+ )+ (pad "6" smd roundrect+ (at 1.1375 -0.95)+ (size 1.325 0.6)+ (layers "F.Cu" "F.Mask" "F.Paste")+ (roundrect_rratio 0.25)+ )+ (embedded_fonts no)+ (model "${KICAD10_3DMODEL_DIR}/Package_TO_SOT_SMD.3dshapes/SOT-23-6.step"+ (offset+ (xyz 0 0 0)+ )+ (scale+ (xyz 1 1 1)+ )+ (rotate+ (xyz 0 0 0)+ )+ )+)
usblc6-2sc6.kicad_symadded+468@@ -0,0 +1,468 @@+(kicad_symbol_lib+ (version 20251024)+ (generator "kicad_symbol_editor")+ (generator_version "10.0")+(symbol "USBLC6-2SC6"+ (pin_names+ (hide yes)+ )+ (exclude_from_sim no)+ (in_bom yes)+ (on_board yes)+ (in_pos_files yes)+ (duplicate_pin_numbers_are_jumpers no)+ (property "Reference" "U"+ (at 0.635 5.715 0)+ (show_name no)+ (do_not_autoplace no)+ (effects+ (font+ (size 1.27 1.27)+ )+ (justify left)+ )+ )+ (property "Value" "USBLC6-2SC6"+ (at 0.635 3.81 0)+ (show_name no)+ (do_not_autoplace no)+ (effects+ (font+ (size 1.27 1.27)+ )+ (justify left)+ )+ )+ (property "Footprint" "Package_TO_SOT_SMD:SOT-666"+ (at 1.016 -6.731 0)+ (show_name no)+ (do_not_autoplace no)+ (hide yes)+ (effects+ (font+ (size 1.27 1.27)+ (italic yes)+ )+ (justify left)+ )+ )+ (property "Datasheet" "https://www.st.com/resource/en/datasheet/usblc6-2.pdf"+ (at 1.016 -8.636 0)+ (show_name no)+ (do_not_autoplace no)+ (hide yes)+ (effects+ (font+ (size 1.27 1.27)+ )+ 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