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RS321XF

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by Ray

Jiangsu RUNIC Tech Operational Amplifier, SOT-23-5. Datasheet-verified pinout, KiCad symbol/footprint/3D.

componentop-amp-cmprs321xf
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3D Model

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Symbol & Footprint

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PCB Footprint

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Datasheet

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Contents

README

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RS321XF

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

RS321XF from Jiangsu RUNIC Tech, in a SOT-23-5. 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 Amplifier output. Diode-clamped to the supply rails; short-circuit current is typically ±54mA and current should be limited to ±100mA. Output swing from rail is 26mV typ with RL=2kΩ and 8mV typ with RL=10kΩ.
2 V- power_in Negative (lowest) power supply. For single-supply operation typically tied to GND; supports dual-supply operation down to -2.75V. Total supply Vs=(V+)-(V-) must be within 2.2V to 5.5V.
3 +IN input Non-inverting (positive) amplifier input. Rail-to-rail input; common-mode range -0.1V to Vs+0.1V (spec'd to 5.6V at Vs=5.5V). Diode-clamped to supplies; input current should be limited to ±10mA.
4 -IN input Inverting (negative) amplifier input. Rail-to-rail input; diode-clamped to supplies; input current should be limited to ±10mA. Input bias current typ ±1pA.
5 V+ power_in Positive (highest) power supply. Operating range 2.2V to 5.5V referenced to V-. Bypass with a local ceramic decoupling capacitor to V-. Quiescent current 60uA typ per amplifier.

Key specifications

Parameter Value
Manufacturer Jiangsu RUNIC Tech
Package SOT-23-5
Category Op-amp/Cmp
Pins 5

Ordering variants

Same part, different packaging or reel option.

  • RS321XF
  • RS321XFBXF
  • RS321XFXK
  • RS321XFXM
  • RS321XFSXH

CAD (KiCad official)

  • Symbol: RS321XF
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: Jiangsu RUNIC Tech datasheet (25 pp, sha256 142a2f6526d0f1f6, 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