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RS621XF-Q1

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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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RS621XF-Q1

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

RS621XF-Q1 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 OUT output Amplifier output with rail-to-rail swing; output signals that swing more than 0.5 V beyond the supply rails should be current-limited to ±10 mA or less.
2 V- power_in Negative (lowest) power supply; operates from single or dual supplies with VS = (V+) - (V-) between 2.5 V and 5.5 V, and VS must not exceed the 7 V absolute maximum.
3 +IN input Positive (noninverting) input; with VS = 5.5 V the common-mode input range is -0.1 V to +5.6 V, and inputs more than 0.5 V beyond the supply rails should be current-limited to 10 mA or less.
4 -IN input Negative (inverting) input; it shares the same input limits as the noninverting input, with inputs clamped to the supply rails and current-limited to 10 mA or less when driven more than 0.5 V beyond them.
5 V+ power_in Positive (highest) power supply; VS = (V+) - (V-) must be between 2.5 V and 5.5 V and must not exceed the 7 V absolute maximum.

Key specifications

Parameter Value
Manufacturer Jiangsu RUNIC Tech
Package SOT-23-5
Category Amplifiers/Comparators
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
Operating Voltage Range VS 2.5 5.5 V TJ=25C 10
Quiescent Current Per Amplifier IQ 625 850 μA VS=±2.5V, Io=0mA, TJ=25C 10
Quiescent Current Per Amplifier IQ 1350 μA VS=±2.5V, Io=0mA, TJ=Full (-40°C to +125°C) 10
Power-Supply Rejection Ratio PSRR 70 90 dB VS=2.5V to 5.5V, TJ=25C 10
Power-Supply Rejection Ratio PSRR 65 dB VS=2.5V to 5.5V, TJ=Full (-40°C to +125°C) 10
Input Offset Voltage VOS -1.5 0.3 1.5 mV VS=5V, VCM=VS/2, TJ=25C 10
Input Offset Voltage VOS -3 3 mV VS=5V, VCM=VS/2, TJ=Full (-40°C to +125°C) 10
Input Offset Voltage Average Drift VOS TC -2.3 2.3 μV/C TJ=Full (-40°C to +125°C) 10
Input Bias Current IB -10 1 10 pA VCM=VS/2, TJ=25C 10
Input Bias Current IB -10 10 nA VCM=VS/2, TJ=Full (-40°C to +125°C) 10
Input Offset Current IOS -10 1 10 pA VCM=VS/2, TJ=25C 10
Input Offset Current IOS -10 10 nA VCM=VS/2, TJ=Full (-40°C to +125°C) 10
Common-Mode Voltage Range VCM -0.1 5.6 V VS=5.5V, TJ=25C 10
Common-Mode Rejection Ratio CMRR 72 94 dB VS=5.5V, VCM=-0.1V to 3.5V, TJ=25C 10
Common-Mode Rejection Ratio CMRR 65 dB VS=5.5V, VCM=-0.1V to 3.5V, TJ=Full (-40°C to +125°C) 10
Common-Mode Rejection Ratio CMRR 60 80 dB VS=5.5V, VCM=-0.1V to 5.6V, TJ=25C 10
Common-Mode Rejection Ratio CMRR 56 dB VS=5.5V, VCM=-0.1V to 5.6V, TJ=Full (-40°C to +125°C) 10
Open-Loop Voltage Gain AOL 105 127 dB RL=10KΩ, VO=(V-)+0.1V to (V+)-0.1V, TJ=25C 10
Open-Loop Voltage Gain AOL 98 dB RL=10KΩ, VO=(V-)+0.1V to (V+)-0.1V, TJ=Full (-40°C to +125°C) 10
Output Swing From Rail 10 20 mV VS=±2.5V, RL=10KΩ, TJ=25C 10
Output Swing From Rail 25 mV VS=±2.5V, RL=10KΩ, TJ=Full (-40°C to +125°C) 10
Output Short-Circuit Current IOUT -70 45 70 mA TJ=25C 10
Output Short-Circuit Current IOUT -25 25 mA TJ=Full (-40°C to +125°C) 10
Capacitive Load Drive CLOAD 100 pF TJ=25C 10
Slew Rate SR 4.3 V/μs G=+1, CL=100pF, TJ=25C 10
Gain-Bandwidth Product GBP 7 MHz TJ=25C 10
Phase Margin PM 64 ° TJ=25C 10
Settling Time, 0.1% ts 1.9 μs VS=±2.5V, G=+1, CL=100pF, Step=2V, TJ=25C 10
Overload Recovery Time tOR 0.45 μs VIN·Gain≥VS, G=-10, TJ=25C 10
Input Voltage Noise En 3.6 μVPP f = 0.1Hz to 10Hz, VS=±2.5V, TJ=25C 10
Input Voltage Noise Density en 13 nV/√Hz VS=±2.5V, f = 10KHz, TJ=25C 10
Input Voltage Noise Density en 14 nV/√Hz VS=±2.5V, f = 1KHz, TJ=25C 10
Supply Voltage (absolute maximum) VS 7 V VS=(V+)-(V-) 8
Signal Input Pin Current -10 10 mA Signal input pin 8
Signal Output Pin Current -10 10 mA Signal output pin 8
Operating Temperature Range TA -40 125 °C Over operating free-air temperature range 8
Junction Temperature TJ -40 150 °C 8
Storage Temperature Tstg -65 150 °C 8
Single-Supply Voltage VS 2.5 5.5 V VS=(V+)-(V-), single-supply 9
Dual-Supply Voltage VS 1.25 2.75 V VS=(V+)-(V-), dual-supply ±1.25V to ±2.75V 9
Package Thermal Impedance, SOT23-5 θJA 230 °C/W SOT23-5, soldered directly onto PCB per JESD-51 8

CAD (KiCad official)

  • Symbol: RS621XF-Q1
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: rs621xf-q1-etched.step / rs621xf-q1-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); rs621xf-q1.step / rs621xf-q1.glb are the bare package body.

Provenance

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

  • Datasheet: Jiangsu RUNIC Tech datasheet (26 pp, sha256 06244107a7a5f7f8, retrieved 2026-10-18, 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