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Initial commit: component/lm35

Ray ·493db4fe6c ·2mo ago
2 files changed +82
README.mdadded+47
@@ -0,0 +1,47 @@+# LM35++**Texas Instruments** · Analog temperature sensor · TO-92++A precision analog temperature sensor in a TO-92 that outputs a voltage directly proportional to Celsius temperature: 10 mV per degree C, so 250 mV means 25 C. Unlike a thermistor it is linear and needs no calibration or linearization, and unlike the digital DS18B20 it feeds an ADC directly with three pins (+VS, VOUT, GND). It reads -55 to +150 C (the full range needs a small negative-bias resistor) with about plus/minus 0.5 C accuracy, drawing only 60 uA so self-heating is negligible. Runs from 4 to 30 V.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | +VS | power_in | Positive supply pin. Recommended operating range 4 V to 30 V; absolute max 35 V. Quiescent current is typ. 60 µA (LM35A at 5 V, 25°C). |+| 2 | VOUT | output | Analog temperature output. Linear scale factor +10 mV/°C referenced to GND (0 V at 0°C). Low-impedance output (~0.1 Ω at 1 mA load); rated output current 10 mA; output voltage range −1 V to +6 V (absolute max). |+| 3 | GND | power_in | Device ground pin; connect to power-supply negative terminal (or to the −VS rail in a full-range dual-supply configuration). |++## Key specifications++| Parameter | Value |+|---|---|+| Type | Analog temperature sensor |+| Output | 10 mV/°C (linear, direct Celsius) |+| Range | -55 to +150 °C |+| Accuracy | ±0.5 °C (typical) |+| Calibration | none required |+| Supply current | ~60 µA |+| Supply voltage | 4-30 V |+| Package | TO-92 (3-lead) |++## Ordering variants++- `LM35DZ (TO-92, 0 to 100 °C)`+- `LM35CZ (TO-92, -40 to 110 °C)`++## CAD (KiCad official)++- Symbol: `Sensor_Temperature:LM35-LP`+- Footprint: `Package_TO_SOT_THT:TO-92_Inline`+- 3D model: TO-92 (KiCad packages3D)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/lit/ds/symlink/lm35.pdf) (38 pp, sha256 `1884601dffcbe160`, retrieved 2026-08-17, tier: manufacturer)+- **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/lm35-datasheet.pdf)
page.jsonadded+35
@@ -0,0 +1,35 @@+{+  "slug": "lm35",+  "version": "0.1.0",+  "type": "component",+  "description": "TI precision analog temperature sensor, TO-92. Linear 10 mV/C, -55 to +150 C, no calibration. Datasheet-verified.",+  "tags": [+    "component",+    "sensor",+    "temperature",+    "analog",+    "to-92",+    "texas-instruments"+  ],+  "dependencies": {},+  "hero": {+    "type": "image",+    "path": "docs/hero.png"+  },+  "files": [+    "page.json",+    "README.md",+    "lm35.kicad_sym",+    "lm35.kicad_mod",+    "lm35.glb",+    "docs/hero.png",+    "docs/lm35-datasheet.pdf",+    "viewers/symbol.html",+    "viewers/footprint.html"+  ],+  "visibility": "public",+  "author": {+    "name": "Ray",+    "email": "[email protected]"+  }+}\ No newline at end of file