RS8551XK

@@ -0,0 +1,53 @@+# RS8551XK++**Jiangsu RUNIC Tech** · Precision OpAmps · SOP-8++RS8551XK from Jiangsu RUNIC Tech, in a SOP-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 | NC | unconnected | No internal connection. Leave floating or tie to a static potential; there is no die bond to this lead. |+| 2 | -IN | input | Inverting input of the op amp. High-impedance CMOS input; common-mode range extends from (V−) − 0.1 V to (V+) + 0.1 V (rail-to-rail input). Typical bias current 50 pA. |+| 3 | +IN | input | Non-inverting input of the op amp. High-impedance CMOS input with rail-to-rail common-mode range ((V−) − 0.1 V to (V+) + 0.1 V). Input clamp diodes to the supplies limit external drive to ±10 mA. |+| 4 | V- | power_in | Negative supply rail. Connect to ground for single-supply operation, or to the negative rail for dual-supply operation. Total supply (V+ − V−) must be between 2.7 V and 5.5 V (7.0 V absolute maximum). |+| 5 | NC | unconnected | No internal connection. Leave floating or tie to a static potential; there is no die bond to this lead. |+| 6 | OUT | output | Rail-to-rail op amp output. Swings within a few mV of each supply rail into 10 kΩ (VOH ≥ 4.98 V, VOL ≤ 10 mV at Vs = 5 V, RL = 10 kΩ to opposite rail). Short-circuit current typically 50 mA. |+| 7 | V+ | power_in | Positive supply rail. Place a 0.1 µF decoupling capacitor close to this pin, referenced to V−. Operating range 2.7 V to 5.5 V above V− (7.0 V absolute maximum). |+| 8 | NC | unconnected | No internal connection. Leave floating or tie to a static potential; there is no die bond to this lead. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Jiangsu RUNIC Tech |+| Package | SOP-8 |+| Category | Op-amp/Cmp |+| Pins | 8 |++## Ordering variants++- `RS8551XK`+- `RS8551XKXM`+- `RS8551XKXF`+- `RS8551XKRS8552XK`+- `RS8551XKRS8553XN`+- `RS8551XKRS8554XP`+- `RS8551XKRS8554XQ`++## CAD (KiCad official)++- Symbol: `RS8551XK`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOP-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Jiangsu RUNIC Tech datasheet](docs/rs8551xk-datasheet.pdf) (14 pp, sha256 `b3b02c9fa92c42d7`, 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/rs8551xk-datasheet.pdf)

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