TMP461AIRUNT-S Temperature Sensor Equivalent & Substitute Parts

Part Overview

The TMP461AIRUNT-S is a digital temperature sensor manufactured by Texas Instruments, designed for local and remote temperature monitoring applications. This component integrates both local and remote sensing capabilities with SMBus output interface, operating across a supply voltage range of 1.7V to 3.6V. The device is currently classified as Last Time Buy, indicating discontinued production status. Identifying equivalent substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications currently utilizing this component.

Substiute Parts

TMP461AIRUNT-S

Texas InstrumentsIn Stock: 3408TMP461AIRUNT-S Datasheet

Current PartRFQ

TMP461AIRUNR-S

Texas InstrumentsIn Stock: 3210TMP461AIRUNR-S Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TMP461AIRUNT-S is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Base product number (TMP461 series)
• Sensor type (Digital, Local/Remote)
• Local sensing temperature range (-40°C ~ 125°C)
• Remote sensing temperature range (-64°C ~ 191°C)
• Output interface (SMBus)
• Supply voltage range (1.7V ~ 3.6V)
• Resolution (11 bit)
• Package type (10-WQFN 2x2)
• Accuracy specification (±1°C / ±1.25°C)
• Operating temperature range (-40°C ~ 125°C)
• Mounting type (Surface Mount)
• RoHS compliance status (ROHS3 Compliant)

The TMP461AIRUNR-S qualifies as a direct substitute based on complete parameter alignment across all electrical and mechanical specifications. The primary distinction between these parts is product status and packaging format availability.

Parameter Comparison

Engineering Selection Recommendations

The TMP461AIRUNR-S is a direct functional equivalent to the TMP461AIRUNT-S. Both components share identical electrical specifications, thermal performance characteristics, and mechanical packaging requirements. The primary distinction is product lifecycle status: the TMP461AIRUNT-S is designated Last Time Buy, while the TMP461AIRUNR-S maintains Active status with ongoing manufacturer support.

For new designs or production continuity, the TMP461AIRUNR-S is the appropriate selection. Both parts maintain ROHS3 compliance and REACH Unaffected status, satisfying regulatory requirements for industrial and commercial applications. The identical 11-bit resolution, SMBus interface, and dual-channel temperature sensing capability ensure seamless integration into existing circuit designs without modification to firmware or hardware interfaces.

Frequently Asked Questions (FAQ)

Q: Can the TMP461AIRUNR-S be used as a direct replacement for the TMP461AIRUNT-S in existing designs?

A: Yes. The TMP461AIRUNR-S is electrically and mechanically identical to the TMP461AIRUNT-S. All electrical parameters, temperature ranges, output interface specifications, and package dimensions are equivalent. No circuit modifications or firmware changes are required.

Q: What is the difference between the TMP461AIRUNT-S and TMP461AIRUNR-S part numbers?

A: The suffix designations indicate packaging format. The "T" suffix denotes Cut Tape packaging, while the "R" suffix denotes Digi-Reel packaging. Both formats contain identical components with identical electrical and thermal specifications.

Q: Why is the TMP461AIRUNT-S classified as Last Time Buy?

A: Last Time Buy status indicates the manufacturer has discontinued production of this specific part number variant. The TMP461AIRUNR-S remains in active production, providing continued supply availability and manufacturer support.

Q: Are there any compatibility concerns when substituting the TMP461AIRUNR-S for the TMP461AIRUNT-S?

A: No compatibility concerns exist. Both parts utilize the same 10-WQFN (2x2) surface mount package, identical SMBus communication protocol, and matching supply voltage requirements (1.7V to 3.6V). PCB footprints and design layouts are interchangeable.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both the TMP461AIRUNT-S and TMP461AIRUNR-S are ROHS3 compliant and REACH Unaffected. Moisture sensitivity level (MSL 2, 1 Year) is identical for both components.

Q: What is the resolution and accuracy specification for temperature measurement?

A: Both parts provide 11-bit resolution with accuracy specifications of ±1°C (highest) and ±1.25°C (lowest) across the operating temperature range of -40°C to 125°C for local sensing and -64°C to 191°C for remote sensing.