Analog temperature sensing with a linear output
The LM35CZ/LFT1 outputs 10 mV per °C with no external scaling — at 25°C the output is 250 mV, at 100°C it is 1.0 V. This linear relationship lets a basic ADC or even a multimeter read temperature directly without a lookup table. Accuracy is ±1°C typical at 25°C, sufficient for local temperature monitoring in industrial controllers, power supplies, or environmental chambers. The sensor covers -40°C to 110°C, matching the operating range of most industrial enclosures. Supply voltage spans 4 V to 30 V, so it runs on common rails (5 V, 12 V, 24 V) without a dedicated regulator. Quiescent current is about 60 µA — self-heating is negligible in still air.
TO-92-3 package and Tape & Reel format
The TO-92-3 through-hole package (TO-226-3, formed leads) is breadboard-friendly and hand-solderable. The LFT1 suffix indicates a tape-and-reel format — the leads are formed and taped for automated insertion, but the reel also works for small-lot surplus buys where date-code consistency matters. Pinout is standard: V+ (left), Vout (centre), GND (right) when viewing the flat face. No external components are required — just decouple the supply with a 0.1 µF cap near the pins if the supply line is noisy.
The tape-and-reel format means consistent date codes on sealed reels when buying surplus lots.