LM335AMX Temperature Sensor Equivalent & Substitute Parts

Part Overview

The LM335AMX is an analog local temperature sensor manufactured by Texas Instruments, designed for temperature measurement applications across the -40°C to 100°C range with 10mV/°K output resolution. The device is classified as "Not For New Designs," indicating it has been superseded in the manufacturer's product portfolio. Finding equivalent and substitute parts is necessary for ongoing production support, maintenance applications, and designs requiring compatible thermal sensing functionality in the 8-SOIC package format.

Substiute Parts

LM335AMX

Texas InstrumentsIn Stock: 5711LM335AMX Datasheet

Current PartRFQ

LM335AMX/NOPB

Texas InstrumentsIn Stock: 5620LM335AMX/NOPB Datasheet

DirectRFQ

LM335ADT

STMicroelectronicsIn Stock: 15376LM335ADT Datasheet

DirectRFQ

LM235DT

STMicroelectronicsIn Stock: 19905LM235DT Datasheet

UpgradeRFQ

LM335DT

STMicroelectronicsIn Stock: 37979LM335DT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LM335AMX are classified based on the following substitution criteria:

Direct Equivalents maintain identical electrical and mechanical specifications: sensor type (Analog, Local), temperature range (-40°C ~ 100°C), output type (Analog Voltage), resolution (10mV/°K), accuracy (±3°C / ±5°C), and package format (8-SOIC). These parts are pin-compatible and functionally interchangeable without circuit modification.

Upgrade Options extend the upper temperature operating limit while maintaining all other core parameters. The LM235DT extends the sensing range to -40°C ~ 125°C, providing broader thermal coverage within the same package and output characteristics.

Manufacturer-Recommended Alternatives offer improved accuracy specifications while preserving temperature range and package compatibility, supporting direct substitution with enhanced performance characteristics.

All substitute relationships are based strictly on matching electrical parameters (sensor type, temperature range, output type, resolution, accuracy) and mechanical parameters (package type, mounting method, MSL rating).

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Pin-Compatible Substitution): LM335AMX/NOPB, LM335ADT, and LM335DT are direct functional equivalents within the -40°C to 100°C operating range. LM335AMX/NOPB maintains Texas Instruments sourcing with active product status and ROHS3 compliance. LM335ADT and LM335DT provide STMicroelectronics alternatives with identical electrical specifications and improved regulatory compliance (ROHS3 Compliant, REACH Unaffected).

For Extended Temperature Coverage: LM235DT extends the upper operating limit to 125°C while maintaining all other electrical and mechanical parameters. This upgrade option is suitable for applications requiring broader thermal measurement capability within the same package footprint.

For Enhanced Accuracy: LM335DT offers improved accuracy specification (±1°C versus ±3°C/±5°C) while preserving the -40°C to 100°C temperature range and 8-SOIC package format. This option supports applications with tighter thermal measurement tolerances.

Regulatory Compliance Considerations: The original LM335AMX carries RoHS Non-Compliant and REACH Affected designations. All substitute parts (LM335AMX/NOPB, LM335ADT, LM235DT, LM335DT) are ROHS3 Compliant and REACH Unaffected, meeting current regulatory requirements for new production and procurement.

Frequently Asked Questions (FAQ)

Q: Can LM335AMX be directly replaced with LM335AMX/NOPB? A: Yes. Both parts share identical electrical specifications (temperature range -40°C ~ 100°C, 10mV/°K resolution, ±3°C/±5°C accuracy) and 8-SOIC package format. LM335AMX/NOPB is the active product variant with improved regulatory compliance.

Q: What is the difference between LM335ADT and LM335DT? A: Both are STMicroelectronics alternatives with identical temperature range (-40°C ~ 100°C), output type, resolution, and package. LM335DT provides superior accuracy (±1°C versus ±3°C/±5°C), making it suitable for applications requiring tighter thermal measurement tolerance.

Q: Is LM235DT a suitable substitute for LM335AMX? A: LM235DT is functionally compatible for applications operating within the -40°C to 100°C range. The primary difference is extended upper temperature capability to 125°C. All other electrical parameters (10mV/°K resolution, ±3°C/±5°C accuracy) and mechanical specifications (8-SOIC package, surface mount) remain identical.

Q: Are all substitute parts available in the same packaging format? A: Yes. All substitute parts (LM335AMX/NOPB, LM335ADT, LM235DT, LM335DT) are supplied in 8-SOIC (0.154", 3.90mm Width) package format with surface mount mounting type, ensuring mechanical compatibility without PCB redesign.

Q: What are the regulatory compliance differences? A: The original LM335AMX is RoHS Non-Compliant and REACH Affected. All substitute parts are ROHS3 Compliant and REACH Unaffected, meeting current environmental and hazardous substance regulations for manufacturing and procurement.

Q: Can these parts be used interchangeably in existing designs? A: Yes, within the specified temperature operating range. All substitute parts maintain identical pin configuration, package footprint, electrical output characteristics (Analog Voltage, 10mV/°K), and sensor type (Analog, Local), enabling direct circuit substitution without modification.