KY-001 DS18B20 Digital Temperature Sensor Module

KY-001 DS18B20 Digital Temperature Sensor Module offers a ready-to-use digital temperature sensing solution. Designers use it for quick prototyping and embedded systems that require precise single-wire temperature measurements with minimal wiring.

Key Features:

• Digital 1-Wire Interface: Communicates over a single data line. Supports multiple sensors on one bus.
• Wide Supply Range: Operates from 3.0 V to 5.5 V for direct MCU compatibility.
• High Accuracy: ±0.5 °C accuracy typical from −10 °C to +85 °C.
• Programmable Resolution: Selectable 9 to 12 bit resolution for trade-off between speed and precision.
• On-Board Pull-up: Includes a 4.7 kΩ pull-up resistor on the data line (module dependent).
• Parasite Power Support: Allows sensor operation with only data and ground in constrained wiring setups.

Technical Specifications:

• Sensor IC: DS18B20 digital thermometer (Maxim / Dallas).
• Temperature Range: −55 °C to +125 °C (measurement range).
• Accuracy: ±0.5 °C typical from −10 °C to +85 °C.
• Resolution: 9 to 12 bits (user configurable).
• Supply Voltage: 3.0 V to 5.5 V DC.
• Interface: 1-Wire bus with unique 64-bit serial ID per device.
• Conversion Time: Up to 750 ms for 12-bit conversion.
• Pull-up Resistor: 4.7 kΩ typical on-board (verify module variant).
• Parasite Power Mode: Supported by DS18B20 (check wiring and firmware).

Mechanical Specifications:

• Module PCB: Small breakout with 3-pin header (VCC, GND, DATA).
• Header: 3-pin female or male header depending on supplier; 2.54 mm pitch.
• Components: DS18B20 IC, pull-up resistor (4.7 kΩ), optional indicator LED and current-limiting resistor on some variants.
• Mounting: Fits breadboards and perfboards for rapid prototyping.

Dimensions:

• Typical PCB Size: Approx. 20 mm × 14 mm (verify supplier mechanical drawing for exact values).
• Header Spacing: 2.54 mm pitch for standard jumper/wire compatibility.
• Sensor Package: DS18B20 commonly in TO-92 or SOT-23 packages mounted on the breakout.

Pinout and Wiring:

• Pin 1 (left): VCC – Connect to 3.0–5.5 V supply.
• Pin 2 (middle): GND – Connect to system ground.
• Pin 3 (right): DATA – 1-Wire data line. Use the on-board pull-up or add an external 4.7 kΩ resistor between DATA and VCC if required.
• Wiring notes: Place the sensor on the same ground reference as the host MCU. For multiple sensors place each on the same data bus and address them by their unique 64-bit ROM codes. Use parasite power wiring only when firmware and wiring meet DS18B20 parasite mode requirements.

Datasheet Reference:

• Refer to the official Maxim Integrated / Analog Devices “DS18B20” datasheet for full electrical characteristics, timing, conversion details, and wiring diagrams. Search “DS18B20 datasheet” on the supplier site to download the PDF.

Applications:

• Environmental Monitoring: Measure ambient temperature in data loggers and weather stations.
• HVAC and Thermostats: Integrate into heating, cooling, and climate control systems.
• IoT and Home Automation: Use with microcontrollers for remote temperature reporting.
• Appliance and Industrial Sensors: Monitor temperature in refrigerators, incubators, and control panels.
• Prototyping and Education: Rapidly add accurate temperature sensing to hobby and classroom projects.

Equivalent Models:

• DS18B20 (TO-92 / SOT-23): Same sensor in alternate packages or bare IC form.
• Waterproof DS18B20 probe: Packaged probe variant for liquid and outdoor sensing.
• TMP117 / TMP36: Alternative temperature sensors (TMP117 is digital I²C; TMP36 is analog). Validate interface and accuracy differences before substituting.

Package Includes:

• 1 x KY-001 DS18B20 Digital Temperature Sensor Module (3-pin)