ADT7461ARM-REEL Equivalent & Substitute Parts

Part Overview

The ADT7461ARM-REEL is a digital temperature sensor manufactured by onsemi, designed for dual-channel temperature monitoring with local and remote sensing capabilities. This component operates across a supply voltage range of 3V to 5.5V and communicates via SMBus interface. The part is currently classified as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

ADT7461ARM-REEL

onsemiIn Stock: 906ADT7461ARM-REEL Datasheet

Current PartRFQ

ADT7461ARZ-REEL

onsemiIn Stock: 19579ADT7461ARZ-REEL Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the ADT7461ARM-REEL is determined by the following critical parameters:

• Base product number (ADT7461) ensures functional equivalence in temperature sensing architecture
• Sensor type (Digital, Local/Remote) and SMBus output interface maintain protocol compatibility
• Supply voltage range (3V ~ 5.5V) ensures power supply compatibility
• Remote sensing temperature range (-55°C ~ 150°C) and accuracy (±3°C) define thermal measurement capability
• Surface mount mounting type and pin-compatible packaging enable direct board-level substitution

The ADT7461ARZ-REEL qualifies as a substitute based on these parameters. Both components share the same base product number, sensor architecture, communication protocol, supply voltage specifications, and thermal measurement characteristics. The primary differences are in local sensing temperature range, package type, product status, and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The ADT7461ARZ-REEL is the designated substitute for the obsolete ADT7461ARM-REEL. Selection of this substitute is supported by the following engineering factors:

The ADT7461ARZ-REEL maintains active product status with onsemi, ensuring continued availability and manufacturing support. This component achieves ROHS3 compliance, meeting current regulatory requirements for electronic components in regulated markets. The substitute retains all critical functional parameters: identical SMBus communication protocol, matching supply voltage specifications (3V ~ 5.5V), equivalent remote sensing temperature range (-55°C ~ 150°C), and identical measurement accuracy (±3°C).

The primary consideration for substitution is package compatibility. The ADT7461ARM-REEL uses 8-MSOP packaging (0.118" width), while the ADT7461ARZ-REEL uses 8-SOIC packaging (0.154" width). PCB layout modifications are required to accommodate the different package footprint. The local sensing temperature range differs between the two parts: the original operates from 0°C to 127°C, while the substitute operates from -40°C to 120°C. This difference must be evaluated against system requirements.

Frequently Asked Questions (FAQ)

Q: Can the ADT7461ARZ-REEL directly replace the ADT7461ARM-REEL without PCB modifications?

A: No. While both components share the same base product number and functional architecture, they use different package types. The ADT7461ARM-REEL uses 8-MSOP packaging, and the ADT7461ARZ-REEL uses 8-SOIC packaging. PCB layout and footprint modifications are required for physical substitution.

Q: Are the SMBus communication protocols identical between these two parts?

A: Yes. Both the ADT7461ARM-REEL and ADT7461ARZ-REEL use SMBus as the output interface. Firmware and software implementations designed for the original part are compatible with the substitute without modification.

Q: What is the significance of the local sensing temperature range difference?

A: The ADT7461ARM-REEL monitors local temperature from 0°C to 127°C, while the ADT7461ARZ-REEL monitors from -40°C to 120°C. If your application requires local temperature monitoring below 0°C, the substitute's extended lower range is beneficial. If your application requires monitoring above 120°C, the original part's extended upper range is necessary. Both parts maintain identical remote sensing capability (-55°C to 150°C).

Q: Does the RoHS compliance difference affect substitution?

A: The ADT7461ARZ-REEL is ROHS3 compliant, while the ADT7461ARM-REEL is RoHS non-compliant. For applications subject to RoHS regulations or customer requirements, the substitute provides compliance. For legacy systems without RoHS requirements, this difference is not a technical barrier to substitution.

Q: Are the supply voltage specifications identical?

A: Yes. Both components operate across the same supply voltage range of 3V to 5.5V. Power supply design and circuit implementation remain unchanged when substituting these parts.