ADT7461ARMZ-2R Equivalent & Substitute Parts

Part Overview

The ADT7461ARMZ-2R is a digital temperature sensor manufactured by onsemi, designed for local and remote temperature monitoring across -40°C to 120°C (local) and -55°C to 150°C (remote) operating ranges. This component features SMBus output, 8-bit resolution, and operates on 3V to 5.5V supply voltage. The part is currently obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. Substitute parts must maintain compatibility with SMBus protocol, similar package footprint (8-MSOP), and comparable temperature sensing capabilities.

Substiute Parts

ADT7461ARMZ-2R

onsemiIn Stock: 1214ADT7461ARMZ-2R Datasheet

Current PartRFQ

ADT7461ARMZ-R7

onsemiIn Stock: 15504ADT7461ARMZ-R7 Datasheet

DirectRFQ

EMC1422-2-ACZL-TR

Microchip TechnologyIn Stock: 894EMC1422-2-ACZL-TR Datasheet

SimilarRFQ

LM86CIMM/NOPB

Texas InstrumentsIn Stock: 1752LM86CIMM/NOPB Datasheet

SimilarRFQ

LM86CIMMX/NOPB

Texas InstrumentsIn Stock: 2141LM86CIMMX/NOPB Datasheet

SimilarRFQ

LM90CIMM/NOPB

National SemiconductorIn Stock: 3407LM90CIMM/NOPB Datasheet

SimilarRFQ

LM90CIMMX/NOPB

National SemiconductorIn Stock: 4391LM90CIMMX/NOPB Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

Primary Compatibility Criteria:

• Output protocol: SMBus (required for direct interface compatibility)
• Package type: 8-MSOP or equivalent 8-pin surface mount package
• Local temperature sensing range: Must cover at least -40°C to 120°C
• Supply voltage: Must support 3V to 5.5V operation
• Mounting type: Surface mount only

Substitution Categories:

Direct Substitute (Identical Specifications): ADT7461ARMZ-R7 maintains all electrical and mechanical parameters of the original part while offering active product status and improved availability.

Compatible Substitutes (Parameter Variations Acceptable): EMC1422-2-ACZL-TR, LM86CIMM/NOPB, LM86CIMMX/NOPB, and LM90CIMMX/NOPB meet core SMBus protocol and package requirements. These parts exhibit variations in resolution, accuracy, and temperature ranges that remain functionally compatible within typical application constraints.

Parameter Comparison

Engineering Selection Recommendations

Recommended Primary Substitute: ADT7461ARMZ-R7 is the optimal replacement for ADT7461ARMZ-2R. This part maintains identical electrical specifications, package configuration, and temperature ranges while offering active product status and significantly higher inventory availability (15,400 units in stock versus 1,109 units for the original). No design modifications are required for direct substitution.

Secondary Substitutes for Extended Temperature Applications: EMC1422-2-ACZL-TR extends remote temperature sensing to -64°C to 191°C and provides 11-bit resolution with improved accuracy (±1°C to ±2°C). This part is suitable for applications requiring enhanced temperature measurement precision and extended remote sensing range. Supply voltage is limited to 3V to 3.6V, requiring verification against system power specifications.

Substitutes for Standard Temperature Range Applications: LM86CIMMX/NOPB and LM90CIMMX/NOPB are active products suitable for applications operating within 0°C to 85°C local temperature range. Both maintain SMBus compatibility and 8-pin surface mount packaging. LM86CIMMX/NOPB offers identical ±3°C accuracy to the original part. LM90CIMMX/NOPB provides ±4°C accuracy. Both require supply voltage limited to 3V to 3.6V. These substitutes are not suitable for applications requiring -40°C lower temperature operation.

Compliance Considerations: ADT7461ARMZ-R7 carries ROHS3 compliance certification. EMC1422-2-ACZL-TR and LM86CIMMX/NOPB also maintain ROHS3 compliance. All recommended substitutes are REACH unaffected and classified under ECCN EAR99.

Frequently Asked Questions (FAQ)

Q: Can ADT7461ARMZ-R7 be used as a direct replacement for ADT7461ARMZ-2R without PCB modifications?

A: Yes. ADT7461ARMZ-R7 maintains identical electrical specifications, temperature ranges, resolution, accuracy, and 8-MSOP package footprint. No design changes are required.

Q: What is the primary limitation of LM86CIMMX/NOPB and LM90CIMMX/NOPB as substitutes?

A: Both parts limit local temperature sensing to 0°C to 85°C, making them unsuitable for applications requiring -40°C lower temperature operation. Supply voltage is also restricted to 3V to 3.6V, eliminating compatibility with 5V systems.

Q: Does EMC1422-2-ACZL-TR offer advantages over ADT7461ARMZ-R7?

A: EMC1422-2-ACZL-TR provides higher resolution (11 bits versus 8 bits) and improved accuracy (±1°C to ±2°C versus ±3°C). Remote temperature sensing extends to -64°C to 191°C. However, supply voltage is limited to 3V to 3.6V, and local temperature sensing is restricted to -40°C to 125°C. These differences require application-specific evaluation.

Q: Are all substitute parts compatible with existing SMBus firmware?

A: All listed substitutes implement SMBus protocol. However, differences in resolution, accuracy, and temperature range may affect firmware interpretation of sensor data. Firmware validation is recommended when substituting parts with different resolution or accuracy specifications.

Q: What packaging formats are available for substitute parts?

A: ADT7461ARMZ-R7 is available in Cut Tape (CT) and Digi-Reel packaging. EMC1422-2-ACZL-TR is supplied in Tape & Reel format. LM86CIMMX/NOPB and LM90CIMMX/NOPB are available in Tape & Reel packaging. Verify packaging requirements against procurement specifications.

Q: Is moisture sensitivity a consideration when selecting substitutes?

A: All listed parts maintain Moisture Sensitivity Level (MSL) 1 (Unlimited), indicating no moisture sensitivity constraints during storage or handling.