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RS803-3.08YSF3

Jiangsu RUNIC Tech · Supervisor And Reset ICs · SOT23

RS803-3.08YSF3 from Jiangsu RUNIC Tech, in a SOT23. 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 GND power_in Ground, the reference for all signals.
2 RESET output Active-low open-drain reset output that remains low while VCC is below the reset threshold and for at least 200ms after VCC rises above the reset threshold; it requires an external pull-up resistor that may connect to any supply from 0V to 6V.
3 VCC power_in Power supply voltage that is monitored; the device operating voltage range is 1.2V to 5.5V.

Key specifications

Parameter Value
Manufacturer Jiangsu RUNIC Tech
Package SOT23
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
Operating Voltage Range VCC 1.2 5.5 V 7
Supply Current ISUPPLY 20 50 µA 7
Reset Threshold VRT 2.94 3.08 3.21 V RS803-3.08 (VCC = 3.21V to 5.5V for this variant) 7
Reset Pulse Width tRS 100 200 460 ms 7
RESET Output voltage Low 0.4 V IOL = 1.2mA 7
RESET Open-Drain output Leakage Current Ilkg(OD) 1 µA VCC > VRT, RESET deasserted 7
VCC supply voltage range VCC -0.5 6 V 6
Input voltage range VI -0.5 6 V 6
Voltage range applied to any output in the high-impedance or power-off state Vo -0.5 6 V 6
Voltage range applied to any output in the high or low state Vo -0.5 V Printed maximum is VCC+0.5 V (not a numeric value) 6
Input clamp current IIK -20 mA VI<0 6
Output clamp current IOK -20 mA VO<0 6
Continuous output current IO -20 20 mA 6
Continuous current through VCC or GND -20 20 mA 6
Junction temperature TJ -65 150 °C 6
Storage temperature Tstg -65 150 °C 6
Operating temperature TA -40 125 °C 6
Reset Threshold Hysteresis 15 mV RS803-3.08 7
Reset Threshold Temperature Coefficient 30 ppm/°C 7
Package thermal impedance (SOT23) θJA 295 °C/W Calculated per JESD-51; packages soldered directly onto a PCB 6

CAD (KiCad official)

  • Symbol: RS803-3.08YSF3
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT23 (KiCad packages3D, STEP)
  • 3D model files: rs803-3-08ysf3-etched.step / rs803-3-08ysf3-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); rs803-3-08ysf3.step / rs803-3-08ysf3.glb are the bare package body.

Provenance

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

  • Datasheet: Jiangsu RUNIC Tech datasheet (13 pp, sha256 5084382dfa1ca18f, retrieved 2026-10-17, 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