ADT7481ARMZ-R7 Equivalent & Substitute Parts

Part Overview

The ADT7481ARMZ-R7 is a digital temperature sensor manufactured by onsemi, designed for local and remote temperature monitoring applications. It provides dual-channel temperature sensing with SMBus output interface, operating across a supply voltage range of 3V to 3.6V. The device features programmable temperature limits, one-shot conversion capability, and an integrated output switch for alarm functionality.

The ADT7481ARMZ-R7 carries an Obsolete product status. Identifying equivalent substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production requirements for applications utilizing this sensor architecture.

Key Parameters

Parameter	Value
Sensor Type	Digital, Local/Remote
Sensing Temperature - Local	0°C ~ 127°C
Sensing Temperature - Remote	-64°C ~ 191°C
Output Type	SMBus
Voltage - Supply	3V ~ 3.6V
Features	One-Shot, Output Switch, Programmable Limit, Standby Mode
Accuracy	±1°C (0°C ~ 70°C), ±2.5°C (-40°C ~ 100°C)
Operating Temperature	-40°C ~ 120°C
Mounting Type	Surface Mount
Package / Case	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
Supplier Device Package	10-MSOP

Substitute Part Grouping Explanation

Substitution eligibility for the ADT7481ARMZ-R7 is determined by strict equivalence across the following critical parameters:

Sensor Type: Digital, Local/Remote dual-channel architecture
Local Temperature Range: 0°C ~ 127°C
Remote Temperature Range: -64°C ~ 191°C
Output Interface: SMBus protocol
Supply Voltage: 3V ~ 3.6V
Functional Features: One-Shot, Output Switch, Programmable Limit, Standby Mode
Accuracy Specification: ±1°C (0°C ~ 70°C) and ±2.5°C (-40°C ~ 100°C)
Operating Temperature Range: -40°C ~ 120°C
Package Configuration: 10-MSOP surface mount

The ADT7481ARMZ-REEL qualifies as a direct substitute based on identical electrical specifications, functional feature set, and mechanical packaging. The distinction between these parts lies in packaging format and product lifecycle status.

Parameter Comparison

Parameter	ADT7481ARMZ-R7	ADT7481ARMZ-REEL
Manufacturer	onsemi	onsemi
Sensor Type	Digital, Local/Remote	Digital, Local/Remote
Sensing Temperature - Local	0°C ~ 127°C	0°C ~ 127°C
Sensing Temperature - Remote	-64°C ~ 191°C	-64°C ~ 191°C
Output Type	SMBus	SMBus
Voltage - Supply	3V ~ 3.6V	3V ~ 3.6V
Features	One-Shot, Output Switch, Programmable Limit, Standby Mode	One-Shot, Output Switch, Programmable Limit, Standby Mode
Accuracy	±1°C (±2.5°C)	±1°C (±2.5°C)
Operating Temperature	-40°C ~ 120°C	-40°C ~ 120°C
Mounting Type	Surface Mount	Surface Mount
Package / Case	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
Supplier Device Package	10-MSOP	10-MSOP
Product Status	Obsolete	Active
Packaging Format	Tube	Cut Tape (CT) & Digi-Reel®

Engineering Selection Recommendations

The ADT7481ARMZ-REEL is the direct functional equivalent of the ADT7481ARMZ-R7. Both parts share identical electrical specifications, sensor architecture, and mechanical packaging. The primary distinction is product lifecycle status: the ADT7481ARMZ-R7 is classified as Obsolete, while the ADT7481ARMZ-REEL maintains Active status.

For new designs or ongoing production requiring temperature sensor functionality within the specified parameters, the ADT7481ARMZ-REEL is the appropriate selection. This part maintains current manufacturing support, compliance certifications (ROHS3 Compliant), and documented supply availability. The ADT7481ARMZ-REEL is suitable for direct replacement in existing applications previously utilizing the ADT7481ARMZ-R7, provided that packaging format compatibility (Cut Tape & Digi-Reel versus Tube) aligns with assembly process requirements.

Frequently Asked Questions (FAQ)

Q: Can the ADT7481ARMZ-REEL directly replace the ADT7481ARMZ-R7 in existing designs?

A: Yes. Both parts are electrically and functionally identical. They share the same sensor type, temperature ranges, SMBus output interface, supply voltage requirements, and 10-MSOP package configuration. Replacement is valid from a functional and electrical standpoint.

Q: What is the difference between ADT7481ARMZ-R7 and ADT7481ARMZ-REEL?

A: The parts are identical in electrical and functional specifications. The difference is in packaging format: ADT7481ARMZ-R7 is supplied in Tube packaging, while ADT7481ARMZ-REEL is supplied in Cut Tape and Digi-Reel format. Additionally, ADT7481ARMZ-R7 is Obsolete, while ADT7481ARMZ-REEL is Active.

Q: Are there any compliance or certification differences between these parts?

A: The ADT7481ARMZ-REEL carries ROHS3 Compliant certification. Both parts share identical REACH Status (REACH Unaffected), ECCN (EAR99), and HTSUS classification (8542.39.0001). Moisture Sensitivity Level is 1 (Unlimited) for both.

Q: Which part should be selected for new production?

A: The ADT7481ARMZ-REEL should be selected for new production. It maintains Active product status, current manufacturing support, and documented supply availability.

Q: Are the 10-TFSOP and 10-MSOP package designations interchangeable?

A: Both designations refer to the same physical package: a 10-pin surface mount package with 0.118" width and 3.00mm body width. These are equivalent package specifications for the ADT7481 series.

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