MCP9843T-BE/MC

Thermal Management Overview

The MCP9843T-BE/MC is a digital temperature sensor manufactured by Microchip Technology, housed in an 8-DFN (2x3) package. It operates within a voltage range of 2.7V to 5.5V and measures temperatures from -40°C to +125°C. The device features Grade B accuracy with maximum errors of ±0.2°C/±1°C at +75°C to +95°C, ±0.5°C/±2°C at +40°C to +125°C, and ±1°C/±3°C at -20°C to +125°C. It utilizes a 2-wire I²C/SMBus interface and includes user-programmable registers for shutdown modes and event boundaries.

Thermal Management Feature Summary

• Complies with JEDEC JC42.4-TSE3000B3 specification for memory module thermal sensing
• Features a Delta-Sigma ADC for high-resolution temperature-to-digital conversion
• Supports programmable temperature event boundaries with configurable alert output polarity
• Includes internal pull-down resistors on address pins and an exposed thermal pad for grounding

Thermal Management Applications

• DIMM modules for servers, PCs, and laptops
• General-purpose temperature datalogging systems
• Microprocessor-based systems requiring thermal monitoring

Thermal Management Procurement Notes

Verify the specific suffix 'BE' indicates Grade B accuracy and 'MC' denotes the 8-DFN package configuration. Confirm that the component matches the JEDEC JC42.4-TSE3000B3 standard required for your application. Ensure the operating voltage aligns with the specified 2.7V to 5.5V range during system integration.

Thermal Management Selection Notes

Select this component when JEDEC compliance and compact surface-mount packaging are required. The Grade B accuracy variant suits applications needing tighter tolerance near room temperature. Consider the 8-DFN footprint for space-constrained designs. Verify interface compatibility with the host controller's I²C/SMBus capabilities before finalizing the design.

Thermal Management Part Context

This part belongs to the MCP9843/98243 family of digital temperature sensors. While the MCP98243 variant includes integrated EEPROM for Serial Presence Detect (SPD), the MCP9843 focuses solely on temperature sensing without non-volatile memory storage. Both share identical thermal sensing architectures and pinouts.

Thermal Management Replacement Considerations

Public confirmed substitute part numbers: MCP9843-BE/ST, MCP98243T-BE/MC.