LM34DM Temperature Sensor - Equivalent & Substitute Parts

Part Overview

The LM34DM is an analog temperature sensor manufactured by Texas Instruments, designed for local temperature measurement applications within the 32°F to 212°F range. This active product operates with a 10mV/°F output characteristic and is housed in an 8-SOIC surface mount package. The sensor is ROHS3 compliant and maintains unlimited moisture sensitivity level (MSL 1), making it suitable for industrial and commercial temperature monitoring applications. Substitute parts are identified to provide alternative sourcing options while maintaining electrical and mechanical compatibility.

Substiute Parts

LM34DM

Texas InstrumentsIn Stock: 5310LM34DM Datasheet

Current PartRFQ

LM34DM/NOPB

National SemiconductorIn Stock: 2432LM34DM/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LM34DM are identified based on strict electrical and mechanical parameter matching. The substitution criteria are:

• Identical sensor type classification (Analog, Local)
• Matching temperature sensing range (32°F ~ 212°F)
• Identical output type (Analog Voltage)
• Matching resolution specification (10mV/°F)
• Identical supply voltage range (4V ~ 30V)
• Matching accuracy specification (±3°F at 77°F test condition)
• Identical operating temperature range (0°C ~ 100°C)
• Identical package and case specification (8-SOIC, 0.154", 3.90mm Width)
• Identical mounting type (Surface Mount)
• Matching compliance certifications (ROHS3, REACH Unaffected, EAR99)

Parts meeting all these criteria are classified as direct substitutes and can be used interchangeably in circuit designs without modification.

Parameter Comparison

Engineering Selection Recommendations

Both the LM34DM and LM34DM/NOPB are active products with identical electrical specifications and package configurations. Selection between these parts should be based on:

• Availability and inventory requirements
• Packaging format preference (Tube vs. Bulk)
• Manufacturer source requirements
• Compliance documentation needs for specific applications

The LM34DM/NOPB designation indicates a lead-free version without plumbum (NOPB), which aligns with ROHS3 compliance requirements. Both parts maintain the same functional performance and are suitable for direct substitution in temperature sensing applications requiring 32°F to 212°F measurement capability.

Frequently Asked Questions (FAQ)

Q: Can LM34DM/NOPB be used as a direct replacement for LM34DM?

A: Yes. Both parts share identical electrical parameters, temperature range, output resolution, supply voltage requirements, accuracy specifications, and 8-SOIC package configuration. They are functionally interchangeable.

Q: What is the difference between the packaging formats (Tube vs. Bulk)?

A: Tube packaging is used for smaller quantity orders and provides individual component protection during handling and storage. Bulk packaging is used for higher volume orders. The electrical and mechanical specifications remain identical regardless of packaging format.

Q: Are there any compliance differences between the two parts?

A: Both parts are active products with REACH Unaffected and EAR99 classifications. The LM34DM/NOPB designation indicates lead-free construction, which is consistent with ROHS3 compliance requirements.

Q: What are the critical parameters for substitution?

A: The critical parameters that must match for substitution are: sensor type (Analog, Local), temperature range (32°F ~ 212°F), output type (Analog Voltage), resolution (10mV/°F), supply voltage (4V ~ 30V), accuracy (±3°F), operating temperature (0°C ~ 100°C), and package type (8-SOIC Surface Mount).

Q: Can these sensors be used in applications requiring remote temperature sensing?

A: No. The LM34DM and LM34DM/NOPB are designed for local temperature sensing only. Remote temperature sensing capability is not supported by these components.