TMP103GYFFR Equivalent & Substitute Parts

Part Overview

The TMP103GYFFR is a digital temperature sensor manufactured by Texas Instruments, designed for local temperature measurement applications. This device operates across a -40°C to 125°C range with 8-bit resolution and communicates via I2C/SMBus interface. The part is currently in active production status with RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent functional performance can be achieved within the specified electrical and mechanical parameters while maintaining supply chain flexibility and cost optimization.

Substiute Parts

TMP103GYFFR

Texas InstrumentsIn Stock: 51318TMP103GYFFR Datasheet

Current PartRFQ

MCP9844T-BE/MNY

Microchip TechnologyIn Stock: 6644MCP9844T-BE/MNY Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TMP103GYFFR is determined by the following critical parameters:

• Sensing temperature range: -40°C to 125°C minimum
• Output interface: I2C or 2-Wire Serial (I2C compatible)
• Supply voltage compatibility: 1.4V ~ 3.6V or overlapping range
• Resolution: 8-bit minimum
• Accuracy specification: ±3°C or better
• Sensor type: Digital, internal or local measurement capability
• Mounting: Surface mount technology
• Compliance: RoHS3 and REACH requirements

The MCP9844T-BE/MNY from Microchip Technology meets these substitution criteria through equivalent functional parameters and compatible electrical specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the TMP103GYFFR and MCP9844T-BE/MNY are active production devices with equivalent RoHS3 and REACH compliance certifications. The primary distinction lies in operating temperature range and package form factor. The TMP103GYFFR supports extended operation to -55°C and 150°C, while the MCP9844T-BE/MNY is rated to -40°C and 125°C. The MCP9844T-BE/MNY includes additional features such as output alarm and fan control functionality not present in the TMP103GYFFR. Supply voltage overlap occurs between 1.7V and 3.6V, with the TMP103GYFFR supporting lower minimum voltage at 1.4V. Both devices maintain identical accuracy specifications and I2C communication protocol compatibility. Selection should be based on specific application requirements regarding temperature extremes, package constraints, and feature requirements.

Frequently Asked Questions (FAQ)

Q: Can the MCP9844T-BE/MNY directly replace the TMP103GYFFR in all applications?

A: Direct replacement is possible when application operating temperature does not exceed -40°C to 125°C and does not require the extended -55°C lower limit of the TMP103GYFFR. Both devices support I2C communication and equivalent accuracy specifications within the overlapping temperature range.

Q: What are the package differences between these parts?

A: The TMP103GYFFR uses a 4-DSBGA (1x1) package, while the MCP9844T-BE/MNY uses an 8-TDFN (2x3) package. These are different physical form factors requiring PCB layout modifications for substitution.

Q: Are the supply voltage ranges compatible?

A: The devices share a common operating range of 1.7V to 3.6V. The TMP103GYFFR extends to 1.4V minimum, providing additional flexibility for lower voltage applications. The MCP9844T-BE/MNY minimum is 1.7V.

Q: Do both parts support I2C communication?

A: Yes. The TMP103GYFFR supports I2C/SMBus, and the MCP9844T-BE/MNY supports 2-Wire Serial I2C. Both are compatible with standard I2C bus protocols.

Q: What compliance certifications apply to both parts?

A: Both devices are ROHS3 compliant, REACH unaffected, and carry MSL rating 1 (unlimited moisture sensitivity). Both are classified under ECCN EAR99 and HTSUS 8542.39.0001.