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KIA78L08F-RTF

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KEC Semicon Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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KIA78L08F-RTF

KEC Semicon · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89

KIA78L08F-RTF from KEC Semicon, in a SOT-89. 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 OUTPUT power_out Regulated 8V (typ.) output, 7.7V to 8.3V at Tj=25°C, up to 150mA maximum output current, with a 0.1μF output capacitor in the test circuit.
2 GND power_in Ground pin, also the case/tab (GND (CASE)), return for the input and output capacitors.
3 INPUT power_in Unregulated input, rated 35V maximum for KIA78L05~15, with a 0.33μF input capacitor in the test circuit.

Key specifications

Parameter Value
Manufacturer KEC Semicon
Package SOT-89
Category Power Management (PMIC)
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 VOUT 7.7 8 8.3 V Tj=25 4
Input Regulation Reg line 20 175 mV Tj=25, 10.5V VIN 23V 4
Input Regulation Reg line 12 125 mV Tj=25, 11V VIN 23V 4
Load Regulation Reg load 15 80 mV Tj=25, 1.0mA IOUT 100mA 4
Load Regulation Reg load 7 40 mV Tj=25, 1.0mA IOUT 40mA 4
Output Voltage VOUT 7.6 8.4 V 10.5V VIN 23V, 1.0mA IOUT 40mA 4
Quiescent Current IB 3.1 6.5 mA Tj=25 4
Quiescent Current IB 6 mA Tj=125 4
Quiescent Current Change IB 1.5 mA 11V VIN 23V 4
Quiescent Current Change IB 0.1 mA 1.0mA IOUT 40mA 4
Ripple Rejection Ratio RR 37 45 dB f=120Hz, 12V VIN 23V, Tj=25 4
Output Noise Voltage VNO 60 μVrms Ta=25, 10Hz f 100kHz 4
Long Term Stability VOUT/t 20 mV/ 1.0kHrs 4
Dropout Voltage /VIN-VOUT/ 1.7 V Tj=25 4
Average Temperature Coefficient of Output Voltage TCVO -0.8 mV/ IOUT=5mA 4
Input Voltage VIN 35 V KIA78L05~15 1
Power Dissipation (SOT-89, F) PD 500 mW Package F (SOT-89) 1
Operating Junction Temperature Tj -30 150 °C 1
Operating Temperature Topr -40 85 °C 1
Storage Temperature Tstg -55 150 °C 1

CAD (KiCad official)

  • Symbol: KIA78L08F-RTF
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89 (KiCad packages3D, STEP)
  • 3D model files: kia78l08f-rtf-etched.step / kia78l08f-rtf-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); kia78l08f-rtf.step / kia78l08f-rtf.glb are the bare package body.

Provenance

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

  • Datasheet: KEC Semicon datasheet (15 pp, sha256 b3817aa781ca7c1e, retrieved 2026-10-19, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-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