RS331XF

@@ -0,0 +1,49 @@+# RS331XF++**Jiangsu RUNIC Tech** · Comparators · SOT-23-5++RS331XF 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 | +IN | input | Noninverting comparator input. Common-mode range extends from (V-)-0.1V to (V+)+0.1V; input bias current 1pA typ, 10pA max. Diode-clamped to supply rails - limit external swing beyond rails to ±10mA. |+| 2 | V- | power_in | Negative (lowest) power supply pin. Tied to ground for single-supply operation (Vs = 1.8V to 5.5V), or to a negative rail for dual-supply operation (±0.9V to ±2.75V). |+| 3 | -IN | input | Inverting comparator input. Common-mode range extends from (V-)-0.1V to (V+)+0.1V; input bias current 1pA typ, 10pA max. Diode-clamped to supply rails - limit external swing beyond rails to ±10mA. |+| 4 | OUT | output | Open-drain comparator output. Requires external pull-up resistor (VOH pull-up range up to 5.6V). VSAT ≈150mV typ at IO≤4mA; sink capability 27mA typ at Vs=5V; leakage 0.01nA typ. Output diode-clamped to rails - external signals must stay within ±0.5V of rails and ±55mA. |+| 5 | V+ | power_in | Positive (highest) power supply pin. Single-supply 1.8V to 5.5V (absolute max 7V vs V-). Bypass locally with 100nF ceramic to V-. |++## 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.++- `RS331XF`+- `RS331XFXK`+- `RS331XFXP`+- `RS331XFXQ`++## CAD (KiCad official)++- Symbol: `RS331XF`+- 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](docs/rs331xf-datasheet.pdf) (16 pp, sha256 `92fbba6bb4adde8a`, 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/rs331xf-datasheet.pdf)

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