LM34CZ/NOPB Temperature Sensor - Equivalent & Substitute Parts

Part Overview

The LM34CZ/NOPB is an analog temperature sensor manufactured by Texas Instruments, designed for local temperature measurement applications. This active product operates across a -40°F to 230°F sensing range with 10mV/°F output resolution and ±2°F accuracy at 77°F test condition. The sensor requires 4V to 30V supply voltage and is packaged in TO-92-3 through-hole configuration. Substitute parts are identified when equivalent electrical performance, mechanical compatibility, and compliance certifications align with application requirements.

Key Parameters

Parameter	LM34CZ/NOPB
Manufacturer	Texas Instruments
Sensor Type	Analog, Local
Sensing Temperature Range	-40°F ~ 230°F
Output Type	Analog Voltage
Resolution	10mV/°F
Supply Voltage	4V ~ 30V
Accuracy	±2°F @ 77°F
Package / Case	TO-92-3
Mounting Type	Through Hole
Product Status	Active
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the LM34CZ/NOPB is determined by the following critical parameters:

Primary Substitution Criteria:

Package / Case compatibility: TO-92-3 through-hole configuration
Sensor Type: Analog, Local temperature measurement
Output Type: Analog Voltage
Mounting Type: Through Hole
Product Status: Active
RoHS Compliance: ROHS3 Compliant

Secondary Compatibility Factors:

Supply voltage range overlap with application requirements
Temperature sensing range coverage for target application
Output resolution and accuracy sufficient for system design
Operating temperature range envelope

Substitute parts are grouped into two categories: direct manufacturer alternatives from Texas Instruments (LM34CAZ/NOPB) and manufacturer-recommended alternatives from Analog Devices Inc. (TMP35GT9Z, TMP37FT9Z). All identified substitutes maintain TO-92-3 packaging, through-hole mounting, and active product status. Voltage supply ranges and temperature sensing ranges differ across substitutes and must be evaluated against specific application requirements.

Parameter Comparison

Parameter	LM34CZ/NOPB	LM34CAZ/NOPB	TMP35GT9Z	TMP37FT9Z
Manufacturer	Texas Instruments	Texas Instruments	Analog Devices Inc.	Analog Devices Inc.
Sensor Type	Analog, Local	Analog, Local	Analog, Local	Analog, Local
Output Type	Analog Voltage	Analog Voltage	Analog Voltage	Analog Voltage
Package / Case	TO-92-3	TO-92-3	TO-92-3	TO-92-3
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Supply Voltage	4V ~ 30V	4V ~ 30V	2.7V ~ 5.5V	2.7V ~ 5.5V
Resolution	10mV/°F	10mV/°F	10mV/°C	20mV/°C
Operating Temperature	-40°C ~ 110°C	-40°C ~ 110°C	-40°C ~ 150°C	-40°C ~ 150°C
Product Status	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

LM34CAZ/NOPB (Direct Texas Instruments Alternative): This part maintains identical electrical specifications to the LM34CZ/NOPB with improved accuracy of ±1°F at 77°F test condition (compared to ±2°F). Both parts share the same supply voltage range (4V ~ 30V), resolution (10mV/°F), and operating temperature envelope (-40°C ~ 110°C). Package, mounting type, and compliance certifications are identical. Selection of LM34CAZ/NOPB is appropriate when enhanced accuracy is required within the same design framework.

TMP35GT9Z (Analog Devices Inc. Alternative): This part operates within a reduced supply voltage range (2.7V ~ 5.5V) and narrower sensing temperature range (10°C ~ 125°C). Resolution remains 10mV/°C. Extended operating temperature range (-40°C ~ 150°C) and shutdown mode feature are provided. Selection requires verification that application supply voltage and temperature sensing requirements fall within TMP35GT9Z specifications.

TMP37FT9Z (Analog Devices Inc. Alternative): This part operates within reduced supply voltage range (2.7V ~ 5.5V) and narrower sensing temperature range (5°C ~ 100°C). Resolution is 20mV/°C, providing doubled output sensitivity. Extended operating temperature range (-40°C ~ 150°C) and shutdown mode feature are provided. Selection requires verification that application supply voltage and temperature sensing requirements fall within TMP37FT9Z specifications.

All substitute parts maintain ROHS3 compliance, active product status, and TO-92-3 through-hole packaging required for direct mechanical and electrical compatibility.

Frequently Asked Questions (FAQ)

Q: Can LM34CAZ/NOPB replace LM34CZ/NOPB in existing designs? A: Yes. Both parts share identical package (TO-92-3), mounting type (through-hole), supply voltage range (4V ~ 30V), resolution (10mV/°F), and operating temperature range (-40°C ~ 110°C). LM34CAZ/NOPB provides improved accuracy (±1°F vs. ±2°F) and requires no circuit modifications.

Q: What are the key differences between Texas Instruments LM34 series and Analog Devices TMP35/TMP37 series? A: LM34 series operates on 4V ~ 30V supply with 10mV/°F resolution and -40°F ~ 230°F sensing range. TMP35/TMP37 series operates on 2.7V ~ 5.5V supply with 10mV/°C or 20mV/°C resolution and narrower sensing ranges. All maintain TO-92-3 packaging and through-hole mounting.

Q: Can TMP35GT9Z or TMP37FT9Z be used in applications requiring 4V ~ 30V supply voltage? A: No. TMP35GT9Z and TMP37FT9Z maximum supply voltage is 5.5V. These parts are suitable only for applications operating within 2.7V ~ 5.5V supply range.

Q: Are all substitute parts available in the same packaging? A: Yes. LM34CZ/NOPB, LM34CAZ/NOPB, TMP35GT9Z, and TMP37FT9Z are all packaged in TO-92-3 with through-hole mounting configuration.

Q: What compliance certifications apply to all listed parts? A: All parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with HTSUS code 8542.39.0001.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message