What the TO-46-3 can tells the repair bench
The LM35H/NOPB comes in a hermetic TO-46-3 metal can — the same package used for mil-spec and high-temp sensors. On a dead board, if you see a scorch mark near the can, the part probably survived; the supply rail or the ADC input that reads it is what actually died. The output is a linear analog voltage at 10mV/°C — no I2C, no SPI, just a DC level you can read with a meter or an ADC pin. At 25°C the output sits at 250 mV; at 150°C it's 1.5 V. That scale factor means you don't need a lookup table or calibration constants in firmware.
Accuracy across the temperature span
That ±1.5°C is the number to budget for in a thermal-shutdown circuit or an oven controller — the typical figure is what the datasheet guarantees at room temp, but the hot-end tolerance is wider. The supply voltage range is 4V to 30V, so the same part works on a 5V logic rail or a 24V industrial loop. The output impedance is low enough to drive a meter directly, but for an ADC input, a 100 nF bypass cap at the supply pin and a 1 kΩ series resistor on the output clean up any noise picked up on long wires.