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CJ7809B-TCN-ATG

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Changjing Linear Voltage Regulators (LDO), TO-220F. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower managementcj7809b-tcn-atgfactory-2.0.0extractor-text

Verified CJ7809B-TCN-ATG

by Ray · last 12 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

12 Nov 2026RayPublished by the parts factory: tier lcsc, 3 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: CJ7809B-TCN-ATG · TO-220F · 3 pins
  • ✓copper: 3 copper pads, none touching another net
  • ✓datasheet: all 3 pin names found in the 33-page datasheet
  • •distributor (warn): no ['digikey', 'mouser'] number
  • ✓family: TO-220F-3_Vertical
  • ✓files: 6 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-y2vlh4xp/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 1 records
  • ✓package_fit: thickness within the datasheet's package drawing (vertical TO package); standing height not judged: the drawing read gives no overall height (H, H1 or L) (datasheet p.25)
  • ✓pads: 3 pins = 3 pads
  • ✓pose: 1 STEP(s) Z-up, seated, centred
  • ✓symbol: 3 pins agree
  • ✓symbol_text: no pin names collide
  • ✓viewers: viewers/footprint.html 16 kB, viewers/symbol.html 7 kB
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ cj7809b-tcn-atg.kicad_sym✓ cj7809b-tcn-atg.kicad_mod✓ cj7809b-tcn-atg.step
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Generated by kicad-footprint-generator · KiCad file format 20260206
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docs Publish 0.1.0 · Ray
viewers cj7809b-tcn-atg: viewers rendered from the public page · Ray
cj7809b-tcn-atg-hero.glb Publish 0.1.0 · Ray
cj7809b-tcn-atg-hero.overlay.json Publish 0.1.0 · Ray
cj7809b-tcn-atg.glb Publish 0.1.0 · Ray
cj7809b-tcn-atg.kicad_mod Publish 0.1.0 · Ray
cj7809b-tcn-atg.kicad_sym Publish 0.1.0 · Ray
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cj7809b-tcn-atg.step Publish 0.1.0 · Ray
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page.json Set visibility: public · Ray
README.md Publish 0.1.0 · Ray
verification.json Verified: Published by the parts factory: tier lcsc, 3 pins · Ray

CJ7809B-TCN-ATG

Changjing · Linear Voltage Regulators (LDO) · TO-220F

CJ7809B-TCN-ATG from Changjing, in a TO-220F. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 IN power_in Input of the device, with a recommended maximum input voltage of 29 V for the CJ7809B.
2 GND power_in Regulator ground.
3 OUT power_out Regulated 9.0 V output of the CJ7809B, with output current up to 1 A at TJ = 25°C.

Key specifications

Parameter Value
Manufacturer Changjing
Package TO-220F
Category Power Management
Pins 3

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Output voltage, TJ = 25°C, ±2% grade VOUT 8.82 9 9.18 V TJ = 25°C 13
Output voltage over line, load and temperature VOUT 8.65 9 9.35 V IOUT = 5mA to 1A, VIN = 11.5 to 23V, TJ = -40 to 125°C, PD ≤ 15W 13
Line regulation ΔVRLINE 25 90 mV VIN = 11.5 to 23V, IOUT = 500mA 13
Load regulation ΔVRLOAD 25 100 mV VIN = 15V, IOUT = 5mA to 1A 13
Quiescent current IQ 3.2 6 mA VIN = 15V, TJ = -40 to 125°C, IOUT = 0mA 13
Quiescent current change ΔIQ 0.1 0.8 mA VIN = 15V, IOUT = 5mA to 1A 13
Quiescent current change ΔIQ 0.3 0.8 mA VIN = 11.5 to 23V, IOUT = 500mA 13
Short circuit current ISC 200 mA VIN = 35V, TA = 25°C 13
Maximum input voltage range VIN MAX 36 V 8
Maximum output current IOUT MAX 1 A 8
Maximum junction temperature TJ Max 150 °C 8
Storage temperature Tstg -65 150 °C 8
Soldering temperature Tsolder 260 °C 10s 8
Input voltage range, CJ7809B VIN 29 V CJ7809B 8
Operating junction temperature TJ -40 125 °C 8
Junction-to-ambient thermal resistance, TO-220F RΘJA 66.4 °C/W TO-220F, packages soldered on PCB in still air without extra heat dissipation pads 9
Junction-to-case thermal resistance, TO-220F RΘJC 6.2 °C/W TO-220F 9
Reference maximum power dissipation for continuous operation, TO-220F PD Ref 1.51 W TO-220F 9

CAD (KiCad official)

  • Symbol: CJ7809B-TCN-ATG
  • Footprint: Package_TO_SOT_THT:TO-220F-3_Vertical
  • 3D model: TO-220F (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Changjing datasheet (33 pp, sha256 2bf7e0142c58a2c8, retrieved 2026-11-12, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF