component
RS358AXk
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Jiangsu RUNIC Tech Operational Amplifier, SOIC-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdownRS358AXk
Jiangsu RUNIC Tech · Operational Amplifier · SOIC-8
RS358AXk from Jiangsu RUNIC Tech, in a SOIC-8. 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 | OUTA | output | Output of amplifier A. Rail-to-rail output, capable of sourcing up to ~130mA. Swings within 8mV of rail with RL=10kΩ and 25mV with RL=2kΩ. |
| 2 | -INA | input | Inverting input of amplifier A. Rail-to-rail input, common-mode voltage range -0.1V to +5.6V with Vs=5.5V. Ultra-low input bias current (~10pA typical). |
| 3 | +INA | input | Non-inverting input of amplifier A. Rail-to-rail input, common-mode voltage range -0.1V to +5.6V with Vs=5.5V. Ultra-low input bias current (~10pA typical). |
| 4 | V- | power_in | Negative supply pin (or ground for single-supply operation). Total supply range V+ to V- is 2.5V to 5.5V. Absolute maximum V+ to V- is 7.0V. |
| 5 | +INB | input | Non-inverting input of amplifier B. Rail-to-rail input, common-mode voltage range -0.1V to +5.6V with Vs=5.5V. Ultra-low input bias current (~10pA typical). |
| 6 | -INB | input | Inverting input of amplifier B. Rail-to-rail input, common-mode voltage range -0.1V to +5.6V with Vs=5.5V. Ultra-low input bias current (~10pA typical). |
| 7 | OUTB | output | Output of amplifier B. Rail-to-rail output, capable of sourcing up to ~130mA. Swings within 8mV of rail with RL=10kΩ and 25mV with RL=2kΩ. |
| 8 | V+ | power_in | Positive supply pin. Operating supply range 2.5V to 5.5V referenced to V-. Absolute maximum V+ to V- is 7.0V. Bypass with 0.1uF close to the pin. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Jiangsu RUNIC Tech |
| Package | SOIC-8 |
| Category | Op-amp/Cmp |
| Pins | 8 |
Ordering variants
Same part, different packaging or reel option.
RS358AXKRS358AXMRS358AXQ
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) | Vs | 2.5 | 5.5 | V | 25C | 3 | |
| Quiescent current per amplifier | IQ | 120 | 220 | uA | 25C | 3 | |
| Power-supply rejection ratio | PSRR | 74 | 90 | dB | Vs=2.5V to 5.5V, VCM=(V-)+0.5V, 25C | 3 | |
| Power-supply rejection ratio | PSRR | 65 | dB | Vs=2.5V to 5.5V, VCM=(V-)+0.5V, -40C to 125C | 3 | ||
| Input offset voltage | Vos | -4.5 | 0.8 | 4.5 | mV | VCM=0V to 3.5V, 25C | 3 |
| Input offset voltage average drift | Vos TC | 2 | uV/C | -40C to 125C | 3 | ||
| Input bias current | IB | 10 | 100 | pA | 25C | 3 | |
| Input offset current | Ios | 1 | 10 | pA | 25C | 3 | |
| Common-mode voltage range | VCM | -0.1 | 5.6 | V | Vs=5.5V, 25C | 3 | |
| Common-mode rejection ratio | CMRR | 74 | 90 | dB | Vs=5.5V, VCM=-0.1V to 4V, 25C | 3 | |
| Common-mode rejection ratio | CMRR | 68 | dB | Vs=5.5V, VCM=-0.1V to 4V, -40C to 125C | 3 | ||
| Common-mode rejection ratio | CMRR | 63 | 80 | dB | Vs=5.5V, VCM=-0.1V to 5.6V, 25C | 3 | |
| Common-mode rejection ratio | CMRR | 57 | dB | Vs=5.5V, VCM=-0.1V to 5.6V, -40C to 125C | 3 | ||
| Open-loop voltage gain | AOL | 85 | 105 | dB | RL=2KΩ, Vo=0.15V to 4.85V, 25C | 3 | |
| Open-loop voltage gain | AOL | 80 | dB | RL=2KΩ, Vo=0.15V to 4.85V, -40C to 125C | 3 | ||
| Open-loop voltage gain | AOL | 88 | 110 | dB | RL=10KΩ, Vo=0.05V to 4.95V, 25C | 3 | |
| Open-loop voltage gain | AOL | 83 | dB | RL=10KΩ, Vo=0.05V to 4.95V, -40C to 125C | 3 | ||
| Output swing from rail | 25 | mV | RL=2KΩ, 25C | 3 | |||
| Output swing from rail | 8 | mV | RL=10KΩ, 25C | 3 | |||
| Output current source | Iout | 130 | mA | 25C | 3 | ||
| Input terminals voltage | -0.5 | V | Maximum printed as (V+) + 0.5V | 2 | |||
| Input terminals current | -10 | 10 | mA | Input terminals, ±10mA as printed | 2 | ||
| Storage temperature | -65 | 150 | °C | 2 | |||
| Operating temperature | -40 | 125 | °C | 2 | |||
| Junction temperature | 150 | °C | 2 | ||||
| ESD susceptibility HBM | 3000 | V | HBM | 2 | |||
| ESD susceptibility MM | 200 | V | MM | 2 | |||
| Package thermal resistance, SOIC-8 | 150 | °C/W | TA = +25°C, SOIC-8 | 2 |
CAD (KiCad official)
- Symbol:
RS358AXk - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
rs358axk-etched.step/rs358axk-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);rs358axk.step/rs358axk.glbare the bare package body.
3D model downloads
Two STEP files. Same geometry, different body top:
| File | Size | Use it when |
|---|---|---|
rs358axk.step |
122 KB | You want the bare part, or you mark your own boards. |
rs358axk-etched.step |
2.0 MB | You want the part with RS358AXk already on it. |
The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 497 faces against 147 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Jiangsu RUNIC Tech datasheet (10 pp, sha256
4846f1da0efeb36a, 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).