MCP9803-M/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip MCP9803-M/SN is a 12-bit I2C digital temperature sensor with ±3°C maximum accuracy in a compact 4.89 × 3.9 mm SOIC-8 package. Provides programmable alert thresholds and 0.0625°C resolution for precise thermal monitoring in embedded systems. In stock worldwide with reliable 6-week factory lead time.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP9803-M/SN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.1683(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/SN?
- 12-bit I2C temperature sensor with 0.0625°C resolution and ±3°C maximum accuracy for reliable thermal monitoring over the full industrial temperature range
- Programmable over-temperature alert output with hysteresis enables autonomous fan control and thermal shutdown without host CPU intervention
- Compact 4.89 × 3.9 mm SOIC-8 plastic package with single-supply I2C operation simplifies PCB integration in space-constrained embedded designs
What is MCP9803-M/SN used for?
MCP9803-M/SN is used in industrial controllers, server boards, and HVAC systems where accurate 12-bit temperature readings over I2C are needed for thermal management and fan speed control. Its programmable alert threshold allows it to trigger autonomous shutdown or warning signals when junction temperature exceeds set limits, reducing firmware complexity. Consumer electronics, battery chargers, and medical monitoring devices also employ it for compact, low-cost ambient temperature sensing with digital output.
What are the specifications of MCP9803-M/SN?
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-8 |
| Factory Lead Time | 6Weeks |
| YTEOL | 9 |
| Accuracy-Max (Cel) | 3Cel |
| Body Breadth | 3.9mm |
| Body Height | 1.72mm |
| Body Length or Diameter | 4.89mm |
| 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 |
| Output Voltage-Min | 0.4V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.25 |
| Package Shape/Style | RECTANGULAR |
| 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 |
| ## MCP9803-M/SN Alternates Showing results | Image |
| 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 | Mainland China, Thailand |
Where can I find the MCP9803-M/SN datasheet?
MCP9803-M/SN Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP9803-M/SN?
Compatible alternatives and drop-in replacements for MCP9803-M/SN:
suggested
Frequently Asked Questions
What resolution and accuracy does MCP9803-M/SN provide for industrial temperature monitoring?
MCP9803-M/SN delivers 12-bit resolution corresponding to 0.0625°C per LSB and ±3°C maximum accuracy across its operating temperature range, making it suitable for industrial thermal management applications such as PCB hot-spot monitoring and HVAC control where sub-1°C resolution is required.
How does MCP9803's programmable alert output reduce microcontroller workload in fan control designs?
MCP9803-M/SN features a programmable over-temperature alert output with configurable hysteresis that activates autonomously when temperature exceeds the set threshold, typically between -55°C and +125°C. This allows the host MCU to remain in sleep mode and wake only on an interrupt instead of continuously polling the I2C bus for temperature updates.
What I2C address options does MCP9803-M/SN support for multi-sensor systems?
MCP9803-M/SN supports up to 8 unique I2C addresses through 3 address-select pins, allowing up to 8 sensors to share a single 2-wire I2C bus. This is useful in multi-zone thermal monitoring systems such as battery packs with 8 cells or server boards monitoring several voltage regulators, all without additional bus multiplexers.
How does MCP9803-M/SN compare to LM75 for an I2C temperature monitoring design?
MCP9803-M/SN offers 12-bit resolution (0.0625°C per step) compared to LM75's 9-bit resolution (0.5°C per step), providing 8× finer temperature granularity. Both use I2C and fit SOIC-8 packages, but MCP9803's higher resolution is preferable for precision fan control and thermal shutdown circuits where coarse 0.5°C steps would cause excessive fan cycling or thermal runaway risk.
Related Guides
LM34966QPWPRQ1 Converter Selection and Procurement Guide
Select LM34966QPWPRQ1 and compare four power-management paths using topology, compatibility, qualification, and procurement checks.
Oct 27, 2026
ERJ-2RKF49R9X Design Guide for PCB Validation
Validate a 49.9 ohm resistor position with power calculations, termination topology, thermal checks, and controlled PCB measurements.
Oct 27, 2026
LM34966QPWPRQ1 Design Guide for SEPIC Power Supplies
Design an LM34966QPWPRQ1 SEPIC supply with practical current, voltage, magnetic, thermal, and validation checks.
Oct 26, 2026
NSI50350AST3G Selection Guide: Package, Current and Procurement Fit
Select NSI50350AST3G and screen four NSI alternatives by current, package, thermal limits, compliance evidence, and traceable supply.
Oct 26, 2026
Why Buy from FindMyChip
About Microchip
Microchip is a leading electronic component manufacturer. FindMyChip sources Microchip ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.1683 | $0.17 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“We've been using FindMyChip for 2 years. Pricing is consistently 20-30% below Mouser/DigiKey for volume orders.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit