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RS621XF

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by Ray

Jiangsu RUNIC Tech Low Noise Amplifiers (LNA) - RF, SOT-23-5. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Datasheet

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Contents

README

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RS621XF

Jiangsu RUNIC Tech · Low Noise Amplifiers (LNA) - RF · SOT-23-5

RS621XF 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. Rail-to-rail output stage; short-circuit current typically 50 mA; recommended load ≥2 kΩ. Absolute-max signal-output voltage range is (V-)-0.5 V to (V+)+0.5 V (current-limited to ±70 mA).
2 V- power_in Negative (lowest) power supply. For single-supply operation tie to GND; for dual supplies connect to the negative rail. Total supply Vs = (V+) - (V-) must be 2.5 V to 5.5 V (absolute max 7 V). Decouple with 0.1 µF close to the pins.
3 +IN input Noninverting (positive) input. Rail-to-rail input with common-mode range -0.1 V to (V+)+0.1 V (spec'd to 5.6 V at Vs=5.5 V). Input bias current ~±1 pA typical (±10 pA max); ESD-clamped to the supply rails (limit input current to ≤10 mA).
4 -IN input Inverting (negative) input. Rail-to-rail common-mode range matches +IN. Input bias current ~±1 pA typical; diode-clamped to supply rails (limit current to ≤10 mA when driven beyond a rail).
5 V+ power_in Positive (highest) power supply. 2.5 V to 5.5 V single-supply (or up to +2.75 V dual-supply). Quiescent current typ. 600 µA (800 µA max). Decouple with a 0.1 µF ceramic close to the pin.

Key specifications

Parameter Value
Manufacturer Jiangsu RUNIC Tech
Package SOT-23-5
Category RF And Wireless
Pins 5

Ordering variants

Same part, different packaging or reel option.

  • RS621XF
  • RS621XFBXF
  • RS621XFXK
  • RS621XFXM
  • RS621XFSXH
  • RS621XFSXK

CAD (KiCad official)

  • Symbol: RS621XF
  • 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 (27 pp, sha256 629551fe8d903c10, 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