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RS121PXF

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Jiangsu RUNIC Tech Operational Amplifier, SOT23-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

componentop-amp-cmprs121pxf
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Symbol & Footprint

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Datasheet

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Contents

README

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RS121PXF

Jiangsu RUNIC Tech · Operational Amplifier · SOT23-5

RS121PXF from Jiangsu RUNIC Tech, in a SOT23-5. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 OUT output Op-amp output. Rail-to-rail output; short-circuit current limited to ±55 mA. Output swings within ~10-40 mV of each supply rail depending on load (10 kΩ / 2 kΩ).
2 V- power_in Negative (lowest) power supply. Connect to ground for single-supply operation or to negative rail for dual-supply. Vs = (V+) − (V−) must be between 2.6 V and 5.5 V (single-supply) or ±1.3 V to ±2.75 V (dual-supply); absolute max Vs = 7 V.
3 +IN input Positive (noninverting) input. Rail-to-rail input; common-mode range -0.2 V to +5.7 V at Vs = 5.5 V. Input bias current typ. ±1 pA (max ±10 pA). Input clamped to supply rails via diodes; limit external current to ≤10 mA when signals exceed rails by >0.5 V.
4 -IN input Negative (inverting) input. Rail-to-rail input; common-mode range -0.2 V to +5.7 V at Vs = 5.5 V. Input bias current typ. ±1 pA. Input clamped to supply rails via diodes; limit external current to ≤10 mA when signals exceed rails by >0.5 V.
5 V+ power_in Positive (highest) power supply. Operating range 2.6 V to 5.5 V (single-supply); absolute max Vs = (V+) − (V−) = 7 V. Quiescent current typ. 7.6 µA per amplifier (max 11 µA).

Key specifications

Parameter Value
Manufacturer Jiangsu RUNIC Tech
Package SOT23-5
Category Op-amp/Cmp
Pins 5

Ordering variants

Same part, different packaging or reel option.

  • RS121PXF
  • RS121PXFXC5
  • RS121PXFXK
  • RS121PXFXM
  • RS121PXFXP
  • RS121PXFXQ

CAD (KiCad official)

  • Symbol: RS121PXF
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT23-5 (KiCad packages3D, STEP)
  • 3D model files: rs121pxf-etched.step / rs121pxf-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); rs121pxf.step / rs121pxf.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 2026-08-17, tier: lcsc)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF