TMP139AIYAHT Temperature Sensor Equivalent & Substitute Parts

Part Overview

The TMP139AIYAHT is a digital local temperature sensor manufactured by Texas Instruments, designed for JEDEC DDR5 applications. This component operates across a -40°C to 125°C temperature range with 11-bit resolution and communicates via 2-Wire Serial I2C interface. The device is currently in Last Time Buy status, indicating discontinued production with limited inventory availability. Identification of equivalent substitute parts is necessary to ensure continued supply chain access and project continuity for applications requiring this temperature sensing functionality.

Substiute Parts

TMP139AIYAHT

Texas InstrumentsIn Stock: 763TMP139AIYAHT Datasheet

Current PartRFQ

TMP139AIYAHR

Texas InstrumentsIn Stock: 699TMP139AIYAHR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TMP139AIYAHT is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Sensor Type: Digital, Local
• Sensing Temperature Range (Local): -40°C ~ 125°C
• Output Type: 2-Wire Serial, I2C
• Voltage Supply: 1.7V ~ 1.98V
• Resolution: 11 bits
• Accuracy: ±0.5°C (±0.75°C)
• Operating Temperature: -40°C ~ 125°C (TA)
• Package / Case: 6-XFBGA, WLBGA
• Supplier Device Package: 6-WLP-01 (1.28x0.78)
• Mounting Type: Surface Mount
• Features: Shutdown Mode, Standby Mode

The TMP139AIYAHR meets all substitution criteria as a direct equivalent part. Both components share identical electrical specifications, thermal performance characteristics, package geometry, and functional features. The primary distinction is product status: TMP139AIYAHT is Last Time Buy, while TMP139AIYAHR maintains Active status with current manufacturing availability.

Parameter Comparison

Engineering Selection Recommendations

TMP139AIYAHR is the direct substitute for TMP139AIYAHT. Selection of TMP139AIYAHR is appropriate for the following reasons:

1. Electrical Equivalence: All electrical parameters, including supply voltage range (1.7V ~ 1.98V), output protocol (2-Wire Serial I2C), resolution (11 bits), and accuracy specifications (±0.5°C / ±0.75°C) are identical.

2. Thermal Performance: Operating temperature range (-40°C ~ 125°C) and sensing capability across the full local temperature range are equivalent.

3. Package Compatibility: Both parts utilize identical 6-WLP-01 (1.28x0.78) ball grid array packaging with matching footprint and mounting requirements for surface mount assembly.

4. Functional Features: Shutdown Mode and Standby Mode capabilities are present in both components, ensuring equivalent power management functionality.

5. Compliance Status: Both parts carry identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications, with MSL rating of 1 (Unlimited).

6. Supply Continuity: TMP139AIYAHR maintains Active product status with current manufacturing availability (653 Pcs in stock), addressing the supply constraint of the Last Time Buy TMP139AIYAHT (707 Pcs remaining inventory).

Frequently Asked Questions (FAQ)

Q: Can TMP139AIYAHR be used as a direct replacement for TMP139AIYAHT in existing designs?

A: Yes. TMP139AIYAHR is a direct functional and electrical equivalent. All critical parameters including sensor type, temperature range, I2C interface, supply voltage, resolution, accuracy, and package geometry are identical. No design modifications are required.

Q: Are there any differences in the I2C communication protocol between these parts?

A: No. Both TMP139AIYAHT and TMP139AIYAHR implement identical 2-Wire Serial I2C output type. Firmware and software interfaces remain unchanged.

Q: What is the significance of the different product status designations?

A: TMP139AIYAHT is designated Last Time Buy, indicating production discontinuation with limited remaining inventory. TMP139AIYAHR maintains Active status with ongoing manufacturing and current stock availability. For new designs or long-term supply requirements, TMP139AIYAHR is the appropriate selection.

Q: Are the package dimensions and PCB footprints identical?

A: Yes. Both parts use the 6-WLP-01 (1.28x0.78) supplier device package with 6-XFBGA, WLBGA case type. PCB footprints, solder pad layouts, and assembly requirements are identical.

Q: Do both parts support the same power management features?

A: Yes. Both TMP139AIYAHT and TMP139AIYAHR include Shutdown Mode and Standby Mode features for equivalent power management functionality.

Q: Is there any difference in accuracy or temperature sensing capability?

A: No. Both parts provide identical accuracy specifications (±0.5°C highest, ±0.75°C lowest) and operate across the same local temperature sensing range (-40°C ~ 125°C).

Q: What is the moisture sensitivity level for both parts?

A: Both parts carry MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.

Q: Are there any export or compliance differences between the two parts?

A: No. Both parts carry identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications, with no compliance or export differences.