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CJ7808B-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 managementcj7808b-tcn-atgfactory-2.0.0extractor-text

Verified CJ7808B-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: CJ7808B-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-wjuqb4jb/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✓ cj7808b-tcn-atg.kicad_sym✓ cj7808b-tcn-atg.kicad_mod✓ cj7808b-tcn-atg.step
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Contents

README

markdown

CJ7808B-TCN-ATG

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

CJ7808B-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.
2 GND power_in Regulator ground.
3 OUT power_out Output of the device.

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 (±2% grade, TJ = 25°C) VOUT 7.84 8 8.16 V TJ = 25°C, ±2% grade 12
Output voltage (over line, load and temperature) VOUT 7.7 8 8.3 V IOUT = 5mA to 1A, VIN = 10.6V to 23V, TJ = -40 to 125°C, PD ≤ 15W 12
Line regulation ΔVRLINE 25 75 mV VIN = 10.6 to 23V, IOUT = 500mA 12
Load regulation ΔVRLOAD 25 75 mV VIN = 14V, IOUT = 5mA to 1A 12
Quiescent current IQ 3.2 6 mA VIN = 14V, TJ = -40 to 125°C, IOUT = 0mA 12
Quiescent current change (load) ΔIQ 0.1 0.8 mA VIN = 14V, IOUT = 5mA to 1A 12
Quiescent current change (line) ΔIQ 0.3 0.8 mA VIN = 10.6 to 23V, IOUT = 500mA 12
Short circuit current ISC 200 mA VIN = 35V, TA = 25°C 12
Input voltage range (CJ7808B) VIN 28 V 8
Operating junction temperature TJ -40 125 °C 8
Maximum input voltage range VIN MAX 36 V All voltages with respect to network ground terminal 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
Junction-to-ambient thermal resistance (TO-220F) RθJA 66.4 °C/W TA = 25°C, still air, PCB soldered 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 TA = 25°C, still air, PCB soldered without extra heat dissipation pads 9

CAD (KiCad official)

  • Symbol: CJ7808B-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