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KIA7042AF-RTF
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KEC Semicon Supervisor and Reset ICs, SOT-89-3. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+45@@ -0,0 +1,45 @@+# KIA7042AF-RTF++**KEC Semicon** · Supervisor and Reset ICs · SOT-89-3++KIA7042AF-RTF from KEC Semicon, in a SOT-89-3. 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 | VCC | power_in | Positive supply and monitored input. Absolute max -0.3 V to +15.0 V; nominal operation 5 V. Internally sensed and compared against the 4.2 V typical detect threshold (VS min 4.05 V, max 4.35 V). |+| 2 | GND | power_in | Ground / VEE reference (0 V). On the SOT-89 package the heat sink tab is common to this pin. |+| 3 | OUT | output | Active-low reset output, open-collector NPN. Pulls low (VOL ≤ 0.4 V at RL = 200 Ω) when VCC drops below the detect threshold; releases (high-Z, IOH ≤ 0.1 μA at VCC = 15 V) when VCC rises above VS+hysteresis. Sinks ≥20 mA at 25 °C. Requires an external pull-up. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | KEC Semicon |+| Package | SOT-89-3 |+| Category | PMIC |+| Pins | 3 |++## Ordering variants++- `KIA7042AF-RTFAF`+- `KIA7042AF-RTFAF-RTF`+- `KIA7042AF-RTFAP`+- `KIA7042AF-RTFAT`++## CAD (KiCad official)++- Symbol: `KIA7042AF-RTF`+- Footprint: `Package_TO_SOT_SMD:SOT-89-3`+- 3D model: SOT-89-3 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [KEC Semicon datasheet](docs/kia7042af-rtf-datasheet.pdf) (4 pp, sha256 `ee964c11be24fd17`, 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/kia7042af-rtf-datasheet.pdf)
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