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DHT22BME280

Structured comparison

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Comparison of DHT22, BME280
Attribute	DHT22AM2302	BME280BME280
Overview
Manufacturer	Aosong (Guangzhou)	Bosch Sensortec
Category	Humidity	Pressure
Object type	module	module
Package	Module	Breakout Board
Documented pins	4	4
Interfaces	Digital	I2C
Lifecycle	ACTIVE	ACTIVE
Physical pin mapping	Unknown	Unknown
Browser simulation	Available	Not available
Electrical
Active Supply Current	1.5 mASource	360 µASource Bosch datasheet: peak current during a measurement.
Sleep Supply Current	50 µASource	100 nASource
Operating Voltage	3.3 – 6 VSource	Varies by vendor The bare die is 1.71-3.6V and NOT 5V tolerant, but most breakouts (GY-BME280, Adafruit, SparkFun...) add an onboard regulator/level shifter — check your specific board before assuming 5V is safe. When in doubt, 3.3V always works.
Interface
Interface	digitalSource	i2cSource The die also supports SPI (3- or 4-wire), but this record models the common 4-pin I2C-only breakout.
I2C Address(es)	Unknown	0x76, 0x77Source Address is 0x76 (SDO low) or 0x77 (SDO high) — check the breakout's default.
Performance
Measures	temperature, humiditySource	temperature, humidity, pressureSource
Range Min	-40°C / 0%RHSource	-40°C / 0%RH / 300hPaSource
Range Max	80°C / 100%RHSource	85°C / 100%RH / 1100hPaSource
Accuracy	±0.5°C / ±2%RHSource	±0.5°C (0-65°C) / ±3%RH / ±1.0hPa absolute; ±0.12hPa relative (700-900hPa, 25-40°C)Source
Resolution	0.1°C / 0.1%RHSource	0.01°C / 0.008%RH / 0.18PaSource
Sampling Rate	500 mHzSource Max sample rate is 0.5Hz — reading faster than every 2s returns stale data.	Unknown
Physical
Package	Module	Breakout Board
Length	Varies by vendor The bare AM2302 sensor housing is ~15.1×25×7.7mm per Aosong's datasheet, but the small carrier PCB most breakouts mount it on varies in size by vendor.	Varies by vendor The Bosch die is a fixed 2.5×2.5×0.93mm LGA, but breakout PCB size varies a lot between vendors (commonly 11×11mm to 15×12mm).
Mounting	module	module
Thermal
Min Operating Temp	-40 °CSource	-40 °CSource
Max Operating Temp	80 °CSource	85 °CSource

Overview

Manufacturer

DHT22: Aosong (Guangzhou)
BME280: Bosch Sensortec

Object type

DHT22: module
BME280: module

Package

DHT22: Module
BME280: Breakout Board

Documented pins

DHT22: 4
BME280: 4

Interfaces

DHT22: Digital
BME280: I2C

Lifecycle

DHT22: ACTIVE
BME280: ACTIVE

Physical pin mapping

DHT22: Unknown
BME280: Unknown

Browser simulation

DHT22: Available
BME280: Not available

Electrical

Active Supply Current

DHT22: 1.5 mASource
BME280: 360 µASource
Bosch datasheet: peak current during a measurement.

Sleep Supply Current

DHT22: 50 µASource
BME280: 100 nASource

Operating Voltage

DHT22: 3.3 – 6 VSource
BME280: Varies by vendor
The bare die is 1.71-3.6V and NOT 5V tolerant, but most breakouts (GY-BME280, Adafruit, SparkFun...) add an onboard regulator/level shifter — check your specific board before assuming 5V is safe. When in doubt, 3.3V always works.

Interface

DHT22: digitalSource
BME280: i2cSource
The die also supports SPI (3- or 4-wire), but this record models the common 4-pin I2C-only breakout.

I2C Address(es)

DHT22: Unknown
BME280: 0x76, 0x77Source
Address is 0x76 (SDO low) or 0x77 (SDO high) — check the breakout's default.

Performance

Measures

DHT22: temperature, humiditySource
BME280: temperature, humidity, pressureSource

Range Min

DHT22: -40°C / 0%RHSource
BME280: -40°C / 0%RH / 300hPaSource

Range Max

DHT22: 80°C / 100%RHSource
BME280: 85°C / 100%RH / 1100hPaSource

Accuracy

DHT22: ±0.5°C / ±2%RHSource
BME280: ±0.5°C (0-65°C) / ±3%RH / ±1.0hPa absolute; ±0.12hPa relative (700-900hPa, 25-40°C)Source

Resolution

DHT22: 0.1°C / 0.1%RHSource
BME280: 0.01°C / 0.008%RH / 0.18PaSource

Sampling Rate

DHT22: 500 mHzSource
Max sample rate is 0.5Hz — reading faster than every 2s returns stale data.
BME280: Unknown

Physical

Package

DHT22: Module
BME280: Breakout Board

Length

DHT22: Varies by vendor
The bare AM2302 sensor housing is ~15.1×25×7.7mm per Aosong's datasheet, but the small carrier PCB most breakouts mount it on varies in size by vendor.
BME280: Varies by vendor
The Bosch die is a fixed 2.5×2.5×0.93mm LGA, but breakout PCB size varies a lot between vendors (commonly 11×11mm to 15×12mm).

Mounting

DHT22: module
BME280: module

Thermal

Min Operating Temp

DHT22: -40 °CSource
BME280: -40 °CSource

Max Operating Temp

DHT22: 80 °CSource
BME280: 85 °CSource

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Compare electronics parts

Choose 2–4 parts

Structured comparison

Overview

Manufacturer

Category

Object type

Package

Documented pins

Interfaces

Lifecycle

Physical pin mapping

Browser simulation

Electrical

Active Supply Current

Sleep Supply Current

Operating Voltage

Interface

Interface

I2C Address(es)

Performance

Measures

Range Min

Range Max

Accuracy

Resolution

Sampling Rate

Physical

Package

Length

Mounting

Thermal

Min Operating Temp

Max Operating Temp