LM35DZ TO-92 Precision Centigrade Temperature Sensor 0–100°C (5-Pack)

LM35DZ TO-92 Precision Centigrade Temperature Sensor — 0°C to +100°C

The LM35DZ is a precision analog temperature sensor from Texas Instruments in a TO-92 through-hole package. It outputs a voltage linearly proportional to temperature at exactly 10mV/°C, calibrated directly in Celsius — no offset subtraction required unlike TMP36. Accuracy is ±0.5°C typical over the 0°C to +100°C range.

Key Specifications

Parameter	Value
Part Number	LM35DZ
Package	TO-92
Supply Voltage	4V – 30V
Temperature Range	0°C to +100°C
Output Scale Factor	10mV/°C
Output Voltage @ 25°C	250mV
Accuracy	±0.5°C typical @ 25°C
Supply Current	60μA typical
Output Impedance	0.1Ω @ 1mA load
Quantity	5 pieces

LM35DZ vs TMP36 — Which to Choose?

Feature	LM35DZ	TMP36GT9Z
Range	0–100°C	−40–125°C
Output @ 25°C	250mV	750mV
Formula	Vout / 0.01	(Vout – 0.5) / 0.01
Supply Min	4V	2.7V

Why Choose LM35DZ?

• Direct Celsius Output — No offset math needed: Temp(°C) = Vout(mV) / 10
• High Accuracy — ±0.5°C typical, ±1°C max over full range
• No Calibration Required — Factory-trimmed, ready to use
• Low Self-Heating — 60μA supply current, <0.1°C self-heating in still air
• TO-92 Package — Breadboard-friendly, easy prototyping

Typical Applications

• Arduino/ESP32 temperature monitoring and data logging
• HVAC thermostat and climate control systems
• Industrial process temperature monitoring
• Battery and motor thermal protection
• Weather stations and environmental sensors
• Medical and laboratory temperature measurement

Arduino Example

float voltage = analogRead(A0) * (5.0 / 1023.0);
float tempC = voltage * 100.0; // 10mV per °C

FAQ

Q: Why does LM35DZ read negative values on 5V Arduino?
A: LM35DZ cannot measure below 0°C on single-supply without a negative bias. For sub-zero, use LM35CZ or TMP36.

Q: Can I use LM35DZ with 3.3V supply?
A: No — minimum supply is 4V. Use TMP36 or LM35CAZ for 3.3V systems.

Package Contents

• 5× LM35DZ TO-92 Precision Temperature Sensor

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