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RS121PXC5

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Jiangsu RUNIC Tech Operational Amplifier, SC70-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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RS121PXC5

Jiangsu RUNIC Tech · Operational Amplifier · SC70-5

RS121PXC5 from Jiangsu RUNIC Tech, in a SC70-5. 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 Output of the single amplifier channel; the datasheet gives no separate output limit beyond the absolute maximum signal output range of (V-)-0.5V to (V+)+0.5V, with output current limited to ±55mA.
2 V- power_in Negative (lowest) power supply; the supply voltage VS = (V+) - (V-) is 2.6V to 5.5V single-supply, with absolute maximum 7V.
3 +IN input Positive (noninverting) input; common-mode range is -0.2V to 5.7V with VS = 5.5V, and signal input pins are absolute-max rated at (V-)-0.5V to (V+)+0.5V with ±10mA input current.
4 -IN input Negative (inverting) input; common-mode range is -0.2V to 5.7V with VS = 5.5V, and signal input pins are absolute-max rated at (V-)-0.5V to (V+)+0.5V with ±10mA input current.
5 V+ power_in Positive (highest) power supply; the supply voltage VS = (V+) - (V-) is 2.6V to 5.5V single-supply, with absolute maximum 7V.

Key specifications

Parameter Value
Manufacturer Jiangsu RUNIC Tech
Package SC70-5
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
Supply voltage, Vs=(V+)-(V-) Vs 7 V 7
Signal input pin current -10 10 mA Signal input pin 7
Signal output pin current -55 55 mA Signal output pin 7
Operating range, free-air temperature TA -40 125 °C 7
Junction temperature TJ -40 150 °C 7
Storage temperature Tstg -65 150 °C 7
Package thermal impedance SOT353(SC70-5) θJA 376 °C/W JESD-51 7
Supply voltage, single-supply VS 2.6 5.5 V Single-supply 8
Supply voltage, dual-supply (printed ±1.3 to ±2.75) VS 1.3 2.75 V Dual-supply, printed as ±1.3 V to ±2.75 V 8
VS Operating Voltage Range VS 2.6 5.5 V TJ=25C 9
IQ Quiescent Current/Amplifier IQ 4 7.6 11 uA TJ=25C 9
Power-Supply Rejection Ratio PSRR 70 76 dB VS=2.6V to 5.5V, VCM=(V-)+0.5V, TJ=25C 9
Power-Supply Rejection Ratio PSRR 60 dB VS=2.6V to 5.5V, VCM=(V-)+0.5V, TJ=Full 9
Input Offset Voltage VOS -0.6 0.2 0.6 mV VCM= VS/2, TJ=25C 9
Input Offset Voltage Average Drift VOS TC -2.5 2.5 uV/C TJ=Full 9
Input Bias Current IB -10 1 10 pA TJ=25C 9
Input Offset Current IOS -10 1 10 pA TJ=25C 9
Common-Mode Voltage Range VCM -0.2 5.7 V VS= 5.5V, TJ=25C 9
Common-Mode Rejection Ratio CMRR 73 79 dB VS= 5.5V, VCM=-0.2V to 4V, TJ=25C 9
Common-Mode Rejection Ratio CMRR 67 dB VS= 5.5V, VCM=-0.2V to 4V, TJ=Full 9
Common-Mode Rejection Ratio CMRR 64 80 dB VS= 5.5V, VCM=-0.2V to 5.7V, TJ=25C 9
Common-Mode Rejection Ratio CMRR 57 dB VS= 5.5V, VCM=-0.2V to 5.7V, TJ=Full 9
Open-Loop Voltage Gain AOL 93 104 dB RL=2KΩ, Vo=0.15V to 4.85V, TJ=25C 9
Open-Loop Voltage Gain AOL 83 dB RL=2KΩ, Vo=0.15V to 4.85V, TJ=Full 9
Open-Loop Voltage Gain AOL 90 96 dB RL=10KΩ, Vo= 0.05V to 4.95V, TJ=25C 9
Open-Loop Voltage Gain AOL 80 dB RL=10KΩ, Vo= 0.05V to 4.95V, TJ=Full 9
Output Swing From Rail 40 50 mV RL=2KΩ, TJ=25C 9
Output Swing From Rail 10 20 mV RL=10KΩ, TJ=25C 9
Output Current Source IOUT 35 mA TJ=25C 9
Slew Rate SR 0.04 V/us TJ=25C 9
Gain-Bandwidth Product GBP 100 KHz TJ=25C 9
Phase Margin PM 62 ° TJ=25C 9
Setting Time, 0.1% tS 90 us TJ=25C 9
Overload Recovery Time 90 us VIN·Gain≥VS, G=-100, TJ=25C 9
Turn-on Time tON 140 us TJ=25C 9
Input Voltage Noise Density en 98 nV/√Hz f = 1KHz, TJ=25C 9
Input Voltage Noise Density en 53 nV/√Hz f = 10KHz, TJ=25C 9

CAD (KiCad official)

  • Symbol: RS121PXC5
  • Footprint: Package_TO_SOT_SMD:SOT-353_SC-70-5
  • 3D model: SC70-5 (KiCad packages3D, STEP)
  • 3D model files: rs121pxc5-etched.step / rs121pxc5-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); rs121pxc5.step / rs121pxc5.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 ad15de92c23081bf, 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