MCP9803T-M/MS Equivalent & Substitute Parts

Part Overview

The MCP9803T-M/MS is an active, production-status digital temperature sensor manufactured by Microchip Technology. It operates across -55°C to 125°C with 11-bit resolution and I2C/SMBus output interface. The device is packaged in 8-MSOP surface mount configuration with Cut Tape and Digi-Reel packaging options. This sensor is ROHS3 compliant with MSL 1 rating and is suitable for applications requiring local temperature monitoring with programmable thresholds and shutdown modes. Equivalent and substitute parts are identified based on matching electrical specifications, package compatibility, and functional feature sets.

Substiute Parts

MCP9803T-M/MS

Microchip TechnologyIn Stock: 7762MCP9803T-M/MS Datasheet

Current PartRFQ

MCP9803-M/MS

Microchip TechnologyIn Stock: 1399MCP9803-M/MS Datasheet

DirectRFQ

AT30TS74-XM8M-B

Microchip TechnologyIn Stock: 3754AT30TS74-XM8M-B Datasheet

MFR RecommendedRFQ

AT30TS74-XM8M-T

Microchip TechnologyIn Stock: 33208AT30TS74-XM8M-T Datasheet

MFR RecommendedRFQ

AT30TS750A-XM8M-B

Microchip TechnologyIn Stock: 1411AT30TS750A-XM8M-B Datasheet

MFR RecommendedRFQ

AT30TS750A-XM8M-T

Microchip TechnologyIn Stock: 7430AT30TS750A-XM8M-T Datasheet

MFR RecommendedRFQ

AT30TS75A-XM8M-T

Microchip TechnologyIn Stock: 18273AT30TS75A-XM8M-T Datasheet

MFR RecommendedRFQ

AT30TSE752A-XM8M-B

Microchip TechnologyIn Stock: 2087AT30TSE752A-XM8M-B Datasheet

MFR RecommendedRFQ

AT30TSE754A-XM8M-T

Microchip TechnologyIn Stock: 5842AT30TSE754A-XM8M-T Datasheet

MFR RecommendedRFQ

AT30TSE758A-XM8M-T

Microchip TechnologyIn Stock: 2089AT30TSE758A-XM8M-T Datasheet

MFR RecommendedRFQ

STDS75DS2F

STMicroelectronicsIn Stock: 16830STDS75DS2F Datasheet

MFR RecommendedRFQ

STTS75DS2F

STMicroelectronicsIn Stock: 2487STTS75DS2F Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts are grouped based on the following critical parameters that determine functional interchangeability:

Primary Matching Criteria:

• Sensor Type: Digital, Local temperature measurement
• Temperature Range: -55°C to 125°C operating capability
• Output Interface: I2C/SMBus protocol compatibility
• Resolution: 11-bit digital output
• Package: 8-MSOP or 8-TSSOP/MSOP footprint compatibility
• Supply Voltage: Minimum 2.7V operation for direct replacement

Substitution Categories:

Direct Equivalents (Identical Specifications):

• MCP9803-M/MS: Same base product, Tube packaging variant

Manufacturer Recommended Substitutes (Microchip Technology):

• AT30TS74-XM8M-B, AT30TS74-XM8M-T: Extended supply voltage range (1.7V ~ 5.5V), ±2°C accuracy
• AT30TS750A-XM8M-B, AT30TS750A-XM8M-T: ±1°C accuracy, extended supply voltage
• AT30TS75A-XM8M-T: ±1°C accuracy, extended supply voltage
• AT30TSE752A-XM8M-B, AT30TSE754A-XM8M-T: ±1°C accuracy, extended supply voltage
• AT30TSE758A-XM8M-T: ±1°C accuracy, extended supply voltage

Cross-Manufacturer Substitute (STMicroelectronics):

• STDS75DS2F: Equivalent specifications with 2.7V ~ 5.5V supply range, ±2°C accuracy

All substitutes maintain 11-bit resolution, I2C/SMBus interface, -55°C to 125°C operating range, and 8-MSOP/8-TSSOP package compatibility.

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement (No Design Changes Required): MCP9803-M/MS is a direct equivalent with identical electrical and mechanical specifications. Selection depends on packaging preference: Cut Tape/Digi-Reel for MCP9803T-M/MS or Tube for MCP9803-M/MS.

Microchip AT Series Substitutes: The AT30TS and AT30TSE series from Microchip Technology are manufacturer-recommended alternatives. These parts maintain 11-bit resolution, I2C/SMBus interface, and -55°C to 125°C operating range. Key differences include extended supply voltage range (1.7V minimum vs. 2.7V) and MSL ratings. AT30TS750A-XM8M-T and AT30TSE758A-XM8M-T offer MSL 1 rating matching the original part. AT30TS74 variants operate at ±2°C accuracy versus ±1°C for the original.

Cross-Manufacturer Substitute: STDS75DS2F from STMicroelectronics provides equivalent functionality with matching 2.7V ~ 5.5V supply voltage and MSL 1 rating. Accuracy specification is ±2°C at best case. All parts are ROHS3 compliant and maintain identical package footprint compatibility.

Compliance Considerations: All listed substitutes maintain ROHS3 compliance and REACH unaffected status. MSL ratings vary; applications requiring unlimited moisture exposure should prioritize MSL 1 rated parts: MCP9803T-M/MS, MCP9803-M/MS, AT30TS750A-XM8M-T, AT30TSE758A-XM8M-T, and STDS75DS2F.

Frequently Asked Questions (FAQ)

Q: Can AT30TS74-XM8M-T replace MCP9803T-M/MS directly? A: Yes, functionally. Both provide 11-bit I2C/SMBus temperature sensing across -55°C to 125°C. The AT30TS74 operates at 1.7V minimum supply voltage (versus 2.7V) and specifies ±2°C accuracy instead of ±1°C. Package footprint is compatible (8-TSSOP/MSOP). Verify your application's accuracy and supply voltage requirements.

Q: What is the difference between AT30TS750A-XM8M-B and AT30TS750A-XM8M-T? A: Both are identical electrically. The suffix indicates packaging: -B denotes Tube packaging, -T denotes Tape & Reel. The -T variant has MSL 1 rating (unlimited moisture exposure) while -B has MSL 3 (168 hours). Select based on storage and handling environment requirements.

Q: Is STDS75DS2F compatible with MCP9803T-M/MS? A: Yes. Both operate at 2.7V ~ 5.5V supply, provide 11-bit resolution, use I2C/SMBus interface, and span -55°C to 125°C. STDS75DS2F specifies ±2°C accuracy versus ±1°C for the MCP9803T-M/MS. Package footprint is identical (8-MSOP). Both have MSL 1 rating.

Q: Why do some substitutes have lower supply voltage minimums? A: AT30TS and AT30TSE series support 1.7V minimum operation, enabling use in lower-voltage applications. MCP9803T-M/MS and STDS75DS2F require 2.7V minimum. If your design operates above 2.7V, all parts are interchangeable on this parameter.

Q: What does MSL rating mean for component selection? A: MSL (Moisture Sensitivity Level) indicates how long a component can be stored in ambient conditions before requiring baking. MSL 1 allows unlimited storage. MSL 3 allows 168 hours. For high-volume production or extended storage, MSL 1 rated parts reduce risk of moisture-induced failures.

Q: Are all substitutes ROHS3 compliant? A: Yes. All listed parts maintain ROHS3 compliance and REACH unaffected status, meeting environmental and regulatory requirements for industrial and commercial applications.