MCP9803-M/MSG Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip MCP9803-M/MSG is a 2-wire I2C high-accuracy temperature sensor with up to 3°C maximum accuracy, 9 to 12-bit resolution, and programmable alert in a compact 8-pin MSOP package for embedded thermal monitoring.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP9803-M/MSG Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.5000(MOQ 1)
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MCP9803-M/MSG?
- Up to 12-bit temperature resolution (0.0625°C/LSB) enables precise thermal monitoring in medical and industrial equipment
- I2C 2-wire interface with programmable address supports up to 8 sensors on a single bus, reducing wiring complexity
- Programmable ALERT output triggers an interrupt on the host MCU when temperature crosses configurable upper and lower limits
- Compact 8-pin MSOP package (3 x 3 x 1.1 mm) minimizes board footprint in space-constrained thermal management designs
What is MCP9803-M/MSG used for?
The MCP9803-M/MSG is suited for board-level thermal management in servers, industrial controllers, and portable instruments where accurate temperature monitoring protects components from over-temperature conditions. Its I2C interface with programmable device address allows multiple MCP9803 sensors to monitor different thermal zones across a single 2-wire bus, simplifying firmware and PCB routing. The programmable ALERT output enables interrupt-driven thermal protection strategies in battery-powered IoT devices, eliminating the need for continuous polling and reducing microcontroller active time.
What are the specifications of MCP9803-M/MSG?
| Pbfree Code | Yes |
| Manufacturer Package Code | MSOP-8 |
| Factory Lead Time | 6Weeks |
| YTEOL | 6 |
| Accuracy-Max (Cel) | 3Cel |
| Body Breadth | 3mm |
| Body Height | 1.1mm |
| Body Length or Diameter | 3mm |
| Housing | PLASTIC |
| JESD-609 Code | e3 |
| Mounting Feature | SURFACE MOUNT |
| Number of Bits | 12 |
| Operating Current-Max | 0.2mA |
| Output Interface Type | 2-WIRE INTERFACE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP8,.19 |
| Package Shape/Style | SQUARE |
| Sensors/Transducers Type | TEMPERATURE SENSOR,SWITCH/DIGITAL OUTPUT,SERIAL |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 2.7V |
| Surface Mount | YES |
| Terminal Finish | Matte Tin (Sn) |
| Termination Type | SOLDER |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Thailand |
Where can I find the MCP9803-M/MSG datasheet?
MCP9803-M/MSG Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP9803-M/MSG?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What temperature measurement resolution does the MCP9803-M/MSG provide at maximum configuration?
At its highest resolution setting, the MCP9803-M/MSG operates in 12-bit mode, delivering a resolution of 0.0625°C per LSB; this level of precision is suitable for medical cold-chain monitoring, HVAC control, and laboratory instruments that require sub-degree thermal tracking without an external ADC.
How many MCP9803-M/MSG sensors can share a single I2C bus, and how are they differentiated?
Up to 8 MCP9803-M/MSG sensors can coexist on one I2C bus, each assigned a unique 7-bit address by configuring the three hardware address pins (A0, A1, A2) with pull-up or pull-down resistors; this multi-zone thermal monitoring capability is particularly useful in server chassis, battery management systems, and multi-channel temperature logging boards.
How does the ALERT pin of the MCP9803-M/MSG help reduce microcontroller power consumption?
The open-drain ALERT output on the MCP9803-M/MSG asserts low when the measured temperature crosses a user-programmed upper or lower threshold register; a host microcontroller can enter sleep mode and wake only on an ALERT interrupt rather than polling the I2C bus every few milliseconds, extending battery runtime in portable and IoT temperature-monitoring applications by reducing active current from several milliamps to under 10 µA in sleep.
For a compact PCB design, how small is the MCP9803-M/MSG footprint?
The MCP9803-M/MSG is housed in an 8-pin MSOP package measuring 3 mm x 3 mm with a body height of only 1.1 mm, occupying less than 10 mm² of PCB area; this small profile is compatible with tight layout constraints in wearable sensors, handheld instruments, and high-density server blade designs where thermal sensors must fit between other components.
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More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $3.0000 | $3.00 |
| 9+ | $2.5000 | $22.50 |
| 10+ | $2.2500 | $22.50 |
| 31+ | $1.5000 | $46.50 |
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