DS18B20Z Temperature Sensor - Equivalent & Substitute Parts

Part Overview

The DS18B20Z is a digital temperature sensor manufactured by Analog Devices Inc./Maxim Integrated, designed for local temperature measurement across the -55°C to 125°C range. This component features 1-Wire® communication protocol, 12-bit resolution, and programmable output switching capabilities. The DS18B20Z is classified as obsolete, which necessitates identification of active equivalent parts for new designs and ongoing production requirements. The availability of substitute components ensures design continuity and supply chain reliability.

Substiute Parts

DS18B20Z

Analog Devices Inc./Maxim IntegratedIn Stock: 1527DS18B20Z Datasheet

Current PartRFQ

DS18B20Z+

Analog Devices Inc./Maxim IntegratedIn Stock: 4110DS18B20Z+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DS18B20Z is determined by strict equivalence across the following critical parameters:

• Sensor type classification (Digital, Local)
• Temperature measurement range (-55°C ~ 125°C)
• Communication protocol (1-Wire®)
• Supply voltage compatibility (3V ~ 5.5V)
• Resolution specification (12 bits)
• Accuracy performance (±0.5°C / ±2°C)
• Package and mounting configuration (8-SOIC Surface Mount)
• Functional feature set (Output Switch, Programmable Limit, Programmable Resolution)

The DS18B20Z+ meets all these criteria and qualifies as a direct substitute. The primary distinction between these parts is product status and regulatory compliance, not electrical or mechanical performance.

Parameter Comparison

Engineering Selection Recommendations

The DS18B20Z+ is the appropriate selection for new designs and production applications. This part maintains complete electrical and mechanical equivalence to the DS18B20Z while offering the following advantages:

• Active product status ensures long-term availability and manufacturer support
• ROHS3 compliance satisfies current regulatory requirements for electronic components
• Tube packaging provides standard handling and storage conditions for production environments
• Identical electrical specifications and package configuration enable direct substitution without circuit redesign

For existing designs currently using the DS18B20Z, transition to the DS18B20Z+ is supported by full parameter compatibility and identical pinout configuration.

Frequently Asked Questions (FAQ)

Q: Can the DS18B20Z+ be used as a direct replacement for the DS18B20Z in existing circuits?

A: Yes. The DS18B20Z+ provides complete electrical and mechanical equivalence. Pinout, package dimensions, voltage requirements, communication protocol, and functional specifications are identical. No circuit modifications are required.

Q: What is the significance of the product status difference between these parts?

A: The DS18B20Z is classified as obsolete, indicating that the manufacturer has discontinued production and support. The DS18B20Z+ maintains active status, ensuring continued availability, technical support, and compliance with current regulatory standards.

Q: Are there any differences in RoHS compliance between these parts?

A: The DS18B20Z is RoHS non-compliant, while the DS18B20Z+ is ROHS3 compliant. For applications subject to RoHS regulations or customer requirements, the DS18B20Z+ is the required selection.

Q: Do these parts have identical temperature measurement accuracy?

A: Yes. Both parts provide ±0.5°C accuracy across the -10°C to 85°C test range and ±2°C accuracy across the full -55°C to 125°C operating range.

Q: Is the packaging format difference significant for circuit design?

A: No. The packaging format (Tube for DS18B20Z+) refers to the supplier delivery method and does not affect electrical performance or circuit integration. The 8-SOIC package configuration is identical for both parts.

Q: What communication protocol does this sensor use?

A: Both parts use the 1-Wire® protocol, a single-wire digital communication standard that enables temperature data transmission and device configuration through a single signal line.