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MCP9803-M/SN
Microchip Technology
SENSOR DIGITAL -55C-125C 8SOIC
10192 Pcs New Original In Stock
Temperature Sensor Digital, Local -55°C ~ 125°C 11 b 8-SOIC
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5.0 / 5.0
- (118 Ratings)
MCP9803-M/SN
Product Overview
1485203
DiGi Electronics Part Number
MCP9803-M/SN-DGManufacturer
Microchip Technology
MCP9803-M/SN
Description
SENSOR DIGITAL -55C-125C 8SOICInventory
10192 Pcs New Original In Stock
Temperature Sensor Digital, Local -55°C ~ 125°C 11 b 8-SOIC
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
Warranty & Returns
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MCP9803-M/SN Technical Specifications
Category
Temperature Sensors, Analog and Digital Output
Packaging
Tube
Series
-
Product Status
Active
Sensor Type
Digital, Local
Sensing Temperature - Local
-55°C ~ 125°C
Sensing Temperature - Remote
-
Output Type
I2C/SMBus
Voltage - Supply
2.7V ~ 5.5V
Resolution
11 b
Features
One-Shot, Output Switch, Programmable Limit, Programmable Resolution, Shutdown Mode
Accuracy - Highest (Lowest)
±1°C (±3°C)
Test Condition
-10°C ~ 85°C (-55°C ~ 125°C)
Operating Temperature
-55°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (0.154", 3.90mm Width)
Supplier Device Package
8-SOIC
Base Product Number
MCP9803
Datasheet & Documents
Manuals
Development Tools Catalog
HTML Datasheet
MCP9803-M/SN-DG
PCN Design/Specification
SOIC-8L Copper Bond Wire 18/Dec/2013
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
MCP9803MSN
Standard Package
100
Alternative Parts
PART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
アフターサービスの対応がていねいで、商品についての質問にもすぐ答えてくれました。
de desembre 02, 2025
Ich kann nur Gutes sagen: hochwertige Produkte, günstige Preise und blitzschneller Versand.
de desembre 02, 2025
Their post-sale services are comprehensive, covering troubleshooting and timely advice for any issues.
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Frequently Asked Questions (FAQ)
Can the MCP9803-M/SN be used in a 3.3V industrial sensor node, and what are the risks of signal level mismatch when interfacing with a 5V microcontroller?
Yes, the MCP9803-M/SN operates reliably within a supply range of 2.7V to 5.5V, making it suitable for both 3.3V and 5V systems. However, when interfacing a 3.3V-powered MCP9803-M/SN with a 5V microcontroller, the I2C signal levels present a risk of bus contention or damage due to overvoltage on the MCP9803-M/SN's SDA and SCL pins. Since the device is not 5V-tolerant on its I2C interface, a bidirectional level shifter or series resistor isolation is strongly recommended to prevent silicon degradation over time. Designers should also consider noise margins and slew rate effects in electrically noisy industrial environments, which may impact communication reliability.
How does the programmable resolution feature of the MCP9803-M/SN affect power consumption and measurement response time in battery-powered applications?
The MCP9803-M/SN supports programmable resolution from 9 to 11 bits, allowing optimization between temperature precision and power usage. At 9-bit resolution, conversion time drops to ~150ms, reducing active current draw and enabling faster sleep-wake cycles in battery-operated systems. For applications requiring higher precision (11-bit), conversion time increases to ~940ms, prolonging sensor activity and increasing energy per reading. Engineers should use the one-shot mode to avoid continuous conversion and pair lower resolution with oversampling in stable thermal environments to extend battery life while maintaining adequate accuracy.
Is the MCP9803-M/SN a reliable drop-in replacement for the TMP102, and how do accuracy and supply voltage differ between the two in cold climate monitoring?
The MCP9803-M/SN can serve as a functional alternative to the TMP102 in many applications, but key differences require evaluation. Both offer 12-bit output and I2C interface, but the MCP9803-M/SN provides a higher tolerance supply range (2.7V–5.5V vs. 1.8V–3.6V), making it better suited for legacy 5V or unregulated power rails. However, the TMP102 typically offers ±0.5°C accuracy (0°C to 65°C), outperforming the MCP9803-M/SN's ±1°C (–10°C to 85°C) in precision-critical scenarios. For cold climate monitoring below –10°C, the MCP9803-M/SN maintains operation to –55°C but with reduced accuracy (±3°C), so calibration or statistical filtering may be needed to maintain measurement integrity.
What are the thermal design considerations when placing the MCP9803-M/SN near high-power components on a densely packed PCB?
The MCP9803-M/SN measures its own die temperature, so PCB layout significantly impacts readings. Placing the device near high-power components like voltage regulators or power MOSFETs can create thermal coupling, leading to false overtemperature alerts. To minimize error, place the MCP9803-M/SN at least 5–10mm from heat sources and use thermal relief on GND pads. Increasing copper spacing or adding cutouts in inner layers can reduce conductive heat transfer. Additionally, ensure the 8-SOIC package has adequate airflow if enclosed—natural convection improves thermal response time and accuracy.
How does the shutdown mode in the MCP9803-M/SN compare to similar modes in competing sensors like the LM75B, and what are the wake-up timing risks in fast-response HVAC systems?
The MCP9803-M/SN includes a shutdown mode that reduces supply current to typically 0.1 µA, ideal for low-power HVAC or building control systems. Compared to the LM75B, which lacks a dedicated shutdown mode and draws ~50 µA continuously, the MCP9803-M/SN offers superior energy savings. However, upon wake-up from shutdown, the MCP9803-M/SN requires a start-up delay (~tCONV + 200ms) before the first valid reading, posing a response lag in time-critical HVAC loops. To mitigate this, use one-shot mode for periodic readings instead of continuous shutdown, or pre-trigger measurement cycles to align with control loop timing, ensuring thermal events aren’t missed during restart intervals.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
MCP9803-M/SN CAD Models
Microchip Technology MCP9803-M/SN PCB symbols & footprints
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