LM62BIM3 Temperature Sensor Equivalent & Substitute Parts

Part Overview

The LM62BIM3 is an analog temperature sensor manufactured by Texas Instruments, designed for local temperature measurement across a 0°C to 90°C range with 15.6mV/°C output resolution. The device operates on a 2.7V to 10V supply and delivers ±2°C accuracy at 25°C test conditions. This part is classified as obsolete, making equivalent and substitute components necessary for new designs and ongoing production requirements. The SOT-23-3 surface mount package ensures compatibility with modern PCB assembly processes.

Key Parameters

Parameter	LM62BIM3
Manufacturer	Texas Instruments
Category	Temperature Sensors
Sensor Type	Analog, Local
Sensing Temperature Range	0°C ~ 90°C
Output Type	Analog Voltage
Supply Voltage	2.7V ~ 10V
Resolution	15.6mV/°C
Accuracy (@ 25°C)	±2°C
Package / Case	TO-236-3, SC-59, SOT-23-3
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution of the LM62BIM3 is determined by the following critical parameters:

Package Compatibility: All substitute parts must use the SOT-23-3 (TO-236-3, SC-59) surface mount package to ensure direct PCB footprint compatibility.

Sensor Type: Substitutes must be analog, local temperature sensors with analog voltage output to maintain circuit interface compatibility.

Temperature Range Overlap: The substitute part's sensing range must encompass or exceed the original 0°C to 90°C operating window. Parts with extended ranges (-40°C to 125°C) are acceptable for applications within the original range.

Supply Voltage Compatibility: The substitute must operate within or overlap the 2.7V to 10V supply range of the original part.

Output Resolution: The resolution (mV/°C) determines signal conditioning requirements. Parts with different resolutions require circuit recalibration but remain functionally substitutable.

Accuracy Specification: Substitutes with ±2°C or better accuracy at the test condition maintain equivalent performance.

Compliance Status: RoHS3 compliance is preferred for new designs and regulatory adherence.

Parameter Comparison

Part Number	Manufacturer	Sensing Range	Supply Voltage	Resolution (mV/°C)	Accuracy @ Test	Package	Product Status	RoHS Status
LM62BIM3	Texas Instruments	0°C ~ 90°C	2.7V ~ 10V	15.6	±2°C	SOT-23-3	Obsolete	Non-compliant
LM62BIM3/NOPB	Texas Instruments	0°C ~ 90°C	2.7V ~ 10V	15.6	±2°C	SOT-23-3	Obsolete	ROHS3 Compliant
DS60R+T&R	Analog Devices Inc./Maxim Integrated	-40°C ~ 125°C	2.7V ~ 5.5V	6.25	±2°C	SOT-23-3	Active	ROHS3 Compliant
DS60R+U	Analog Devices Inc./Maxim Integrated	-40°C ~ 125°C	2.7V ~ 5.5V	6.25	±2°C	SOT-23-3	Active	ROHS3 Compliant
MCP9700AT-E/TT	Microchip Technology	-40°C ~ 125°C	2.3V ~ 5.5V	10	±2°C	SOT-23-3	Active	ROHS3 Compliant
MCP9700T-E/TT	Microchip Technology	-40°C ~ 125°C	2.3V ~ 5.5V	10	±2°C	SOT-23-3	Active	ROHS3 Compliant
MCP9701AT-E/TT	Microchip Technology	-10°C ~ 125°C	3.1V ~ 5.5V	19.5	±2°C	SOT-23-3	Active	ROHS3 Compliant
TC1046VNBTR	Microchip Technology	-40°C ~ 125°C	2.7V ~ 4.4V	6.25	±2°C	SOT-23-3	Active	ROHS3 Compliant
TC1047AVNBTR	Microchip Technology	-40°C ~ 125°C	2.5V ~ 5.5V	10	±2°C	SOT-23-3	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Equivalent (Packaging Only): LM62BIM3/NOPB is the direct equivalent of LM62BIM3, differing only in RoHS3 compliance status and packaging format (Tape & Reel). This part maintains identical electrical specifications and temperature range, making it the preferred choice for direct replacement in existing designs.

Active Production Alternatives: All Microchip Technology and Analog Devices parts listed are in active production status, ensuring long-term availability and supply chain stability. These parts are recommended for new designs requiring RoHS3 compliance.

Supply Voltage Consideration: The MCP9701AT-E/TT operates at 3.1V minimum supply voltage, which exceeds the LM62BIM3's 2.7V minimum. Verify supply voltage availability in target applications before selection.

Resolution Trade-offs: Parts with lower resolution (6.25mV/°C) such as DS60R variants and TC1046VNBTR require different signal conditioning compared to the original 15.6mV/°C output. Parts with higher resolution (19.5mV/°C) such as MCP9701AT-E/TT provide finer temperature discrimination but require circuit recalibration.

Temperature Range Extension: Microchip and Analog Devices substitutes extend the upper operating limit to 125°C and lower limit to -40°C, providing broader application flexibility while maintaining the original 0°C to 90°C performance window.

Frequently Asked Questions (FAQ)

Q: Can LM62BIM3/NOPB be used as a direct drop-in replacement?

A: Yes. LM62BIM3/NOPB is electrically and mechanically identical to LM62BIM3, with the primary difference being RoHS3 compliance and packaging format (Tape & Reel versus bulk). No circuit modifications are required.

Q: What is the impact of different output resolutions on circuit design?

A: Output resolution (mV/°C) determines the analog-to-digital converter (ADC) input sensitivity and signal conditioning requirements. Lower resolution parts (6.25mV/°C) produce smaller voltage changes per degree, requiring higher ADC gain or precision. Higher resolution parts (19.5mV/°C) produce larger voltage changes, potentially requiring attenuator circuits. Recalibration of signal conditioning and firmware is necessary when changing resolution.

Q: Are all substitute parts compatible with the SOT-23-3 footprint?

A: Yes. All listed substitute parts use the SOT-23-3 (TO-236-3, SC-59) package, ensuring direct PCB footprint compatibility without layout modifications.

Q: Which substitute offers the best long-term availability?

A: MCP9700T-E/TT and TC1047AVNBTR from Microchip Technology show the highest inventory levels (99,700 and 38,200 units respectively) and active production status, providing superior supply chain security for high-volume applications.

Q: Can substitutes with extended temperature ranges (-40°C to 125°C) be used in applications limited to 0°C to 90°C?

A: Yes. Extended range parts maintain full accuracy and functionality within the original 0°C to 90°C window. The broader operating range provides design flexibility without performance degradation in the specified application range.

Q: What supply voltage range is common across all substitutes?

A: The 2.7V to 5.5V range is supported by most active alternatives (DS60R, MCP9700, TC1047AVNBTR). MCP9701AT-E/TT requires minimum 3.1V. TC1046VNBTR operates up to 4.4V maximum. Verify supply voltage compatibility with your specific application circuit.

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