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RS621BXF

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Jiangsu RUNIC Tech Operational Amplifier, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Contents

README

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RS621BXF

Jiangsu RUNIC Tech · Operational Amplifier · SOT-23-5

RS621BXF from Jiangsu RUNIC Tech, in a SOT-23-5. 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 input Positive (noninverting) input; common-mode voltage range is -0.1V to 5.6V with Vs = 5.5V.
2 V- power_in Negative (lowest) power supply; operates from 2.5V to 5.5V single-supply (or ±1.25V to ±2.75V dual-supply).
3 -IN input Negative (inverting) input; common-mode voltage range is -0.1V to 5.6V with Vs = 5.5V.
4 OUT output Output; rail-to-rail output swing with 50 mA typical short-circuit current at 25°C.
5 V+ power_in Positive (highest) power supply; operates from 2.5V to 5.5V single-supply, with absolute maximum supply voltage of 7V.

Key specifications

Parameter Value
Manufacturer Jiangsu RUNIC Tech
Package SOT-23-5
Category Operational Amplifier/Comparator
Pins 5

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Supply voltage Vs 7 V Supply, Vs=(V+)-(V-) 6
Operating range, TA TA -40 125 °C Operating free-air temperature 6
Junction temperature TJ 150 °C Junction 6
Storage temperature Tstg -65 150 °C Storage 6
Signal input pin current -10 10 mA Signal input pin 6
Signal output pin current -70 70 mA Signal output pin 6
ESD Human-body model V(ESD) -5000 5000 V Human-body model (HBM) 6
ESD Machine model V(ESD) -400 400 V Machine Model (MM) 6
Supply voltage single-supply Vs 2.5 5.5 V Single-supply 6
Supply voltage dual-supply Vs 1.25 2.75 V Dual-supply, ±1.25 V to ±2.75 V as printed 6
Operating voltage range Vs 2.5 5.5 V 25C 9
Quiescent current per amplifier IQ 600 800 uA 25C 9
Power-supply rejection ratio PSRR 78 93 dB Vs=2.5V to 5.5V, Vcm=(V-)+0.5V, 25C 9
Power-supply rejection ratio PSRR 72 dB Vs=2.5V to 5.5V, Vcm=(V-)+0.5V, -40C to 125C 9
Input offset voltage Vos -3 0.7 3 mV 25C 9
Input offset voltage average drift Vos TC 2 uV/C -40C to 125C 9
Input bias current IB -10 1 10 pA 25C 9
Input offset current Ios -10 1 10 pA 25C 9
Common-mode voltage range Vcm -0.1 5.6 V Vs= 5.5V, 25C 9
Common-mode rejection ratio CMRR 74 92 dB Vs= 5.5V, Vcm=-0.1V to 4V, 25C 9
Common-mode rejection ratio CMRR 68 dB Vs= 5.5V, Vcm=-0.1V to 4V, -40C to 125C 9
Common-mode rejection ratio CMRR 62 83 dB Vs= 5.5V, Vcm=-0.1V to 5.6V, 25C 9
Common-mode rejection ratio CMRR 60 dB Vs= 5.5V, Vcm=-0.1V to 5.6V, -40C to 125C 9
Open-loop voltage gain AOL 96 102 dB RL=2KΩ, Vo=0.15V to 4.85V, 25C 9
Open-loop voltage gain AOL 83 dB RL=2KΩ, Vo=0.15V to 4.85V, -40C to 125C 9
Open-loop voltage gain AOL 98 106 dB RL=10KΩ, Vo=0.05V to 4.95V, 25C 9
Open-loop voltage gain AOL 85 dB RL=10KΩ, Vo=0.05V to 4.95V, -40C to 125C 9
Output swing from rail 40 mV RL=2KΩ, 25C 9
Output swing from rail 7 mV RL=10KΩ, 25C 9
Output short-circuit current Iout 50 mA 25C 9
Slew rate SR 3.7 V/us 25C 9
Gain-bandwidth product GBP 7 MHz 25C 9
Phase margin PM 64 ° 25C 9
Setting time ts 0.5 us 0.1% 9
Overload recovery time 0.5 us VIN·Gain≥VS 9
Input voltage noise density en 11 nV/√Hz f = 1KHz, 25C 9
Input voltage noise density en 7.5 nV/√Hz f = 10KHz, 25C 9
Supply current in shutdown IQ(OFF) 1 uA 25C, printed <1 uA 9
Turn-off time tOFF 3 us 25C 9
Turn-on time tON 20 us 25C 9
Junction-to-ambient thermal resistance RθJA 273.8 °C/W SOT23-5 column, RS621 table 6
Junction-to-case (top) thermal resistance RθJC(top) 126.8 °C/W SOT23-5 column, RS621 table 6
Junction-to-board thermal resistance RθJB 85.9 °C/W SOT23-5 column, RS621 table 6
Junction-to-top characterization parameter ΨJT 10.9 °C/W SOT23-5 column, RS621 table 6
Junction-to-board characterization parameter ΨJB 84.9 °C/W SOT23-5 column, RS621 table 6

CAD (KiCad official)

  • Symbol: RS621BXF
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: rs621bxf-etched.step / rs621bxf-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); rs621bxf.step / rs621bxf.glb are the bare package body.

Provenance

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

  • Datasheet: Jiangsu RUNIC Tech datasheet (27 pp, sha256 629551fe8d903c10, retrieved 2026-10-28, 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