RS121PXF

@@ -0,0 +1,51 @@+# 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)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Jiangsu RUNIC Tech datasheet](docs/rs121pxf-datasheet.pdf) (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](docs/rs121pxf-datasheet.pdf)

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