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CJ78L18C-TAB-ABG

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Changjing Linear Voltage Regulators (LDO), TO-92. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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CJ78L18C-TAB-ABG

Changjing · Linear Voltage Regulators (LDO) · TO-92

CJ78L18C-TAB-ABG from Changjing, in a TO-92. 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 OUT output Output of the regulator, rated for output current up to 100mA.
2 GND power_in Regulator ground.
3 IN input Input to the device; the recommended input voltage for CJ78L18C is up to 35 V and the absolute maximum input voltage is 36 V.

Key specifications

Parameter Value
Manufacturer Changjing
Package TO-92
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
Input voltage VIN 35 V 14
Output voltage VOUT 17.46 18 18.54 V TJ = 25°C, ±3% grade 14
Output voltage over line, load and temperature VOUT 17.1 18 18.9 V VIN = 20.5 to 33V, TJ = -40 to 125°C, IOUT = 1 to 100mA, PD ≤ 0.75W 14
Output current IOUT 100 mA TJ = 25°C 14
Quiescent current IQ 3 6 mA IOUT = 0mA 14
Quiescent current change ∆IQ 1.5 mA VIN = 22 to 33V, TJ = -40 to 125°C 14
Quiescent current change ∆IQ 0.1 mA IOUT = 1 to 40mA, TJ = -40 to 125°C 14
Dropout voltage VDO 1.7 2 V IOUT = 40mA 14
Dropout voltage VDO 1.8 2.3 V IOUT = 100mA 14
Line regulation ΔVLINE 25 250 mV VIN = 20.5 to 33V 14
Load regulation ΔVLOAD 25 150 mV IOUT = 1 to 100mA 14
Output voltage temperature coefficient ΔVOUT / ΔT 1.5 mV/°C IOUT = 5mA 14
Output voltage temperature coefficient ΔVOUT / (VOUT × ΔT) 84 ppm/°C IOUT = 5mA 14
Output noise voltage VN 100 µV f = 10 to 100k Hz 14
Ripple rejection RR 34 39 dB VIN = 21.5 to 31.5V, f = 120Hz 14
Input voltage VIN MAX 36 V 6
Maximum junction temperature TJ Max 150 °C 6
Storage temperature Tstg -65 150 °C 6
Soldering temperature Tsolder 260 °C 10s 6
Operating junction temperature TJ -40 125 °C 6
Junction-to-ambient thermal resistance (TO-92) RΘJA 167.2 °C/W TO-92 package 7
Junction-to-case thermal resistance (TO-92) RΘJC 40.3 °C/W TO-92 package 7
Reference maximum power dissipation for continuous operation (TO-92) PD Ref 0.6 W TO-92 package 7

CAD (KiCad official)

  • Symbol: CJ78L18C-TAB-ABG
  • Footprint: Package_TO_SOT_THT:TO-92_Inline
  • 3D model: TO-92 (KiCad packages3D, STEP)
  • 3D model files: cj78l18c-tab-abg-etched.step / cj78l18c-tab-abg-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); cj78l18c-tab-abg.step / cj78l18c-tab-abg.glb are the bare package body.

Provenance

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

  • Datasheet: Changjing datasheet (30 pp, sha256 ccb056fb5d1abe3f, retrieved 2026-10-27, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus off (skipped (clean text read)), 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