LM385LPRE3-1-2 Equivalent & Substitute Parts

Part Overview

The LM385LPRE3-1-2 is a shunt voltage reference IC manufactured by Texas Instruments, designed for precision voltage reference applications requiring fixed 1.235V output. This active product operates in the 0°C to 70°C temperature range and is packaged in TO-92-3 through-hole configuration. Substitute parts are identified when component availability is limited, supply chain disruptions occur, or design flexibility permits equivalent performance characteristics within specified electrical and mechanical tolerances.

Substiute Parts

LM385LPRE3-1-2

Texas InstrumentsIn Stock: 12654LM385LPRE3-1-2 Datasheet

Current PartRFQ

LM385LPR-1-2

Texas InstrumentsIn Stock: 12949LM385LPR-1-2 Datasheet

Parametric EquivalentRFQ

LM385BZ-1.2RAG

onsemiIn Stock: 4614LM385BZ-1.2RAG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LM385LPRE3-1-2 are qualified based on the following critical parameters that determine functional equivalence:

Electrical Equivalence Criteria:

• Reference Type: Shunt
• Output Type: Fixed
• Voltage - Output (Min/Fixed): 1.235V
• Current - Output: 20 mA
• Operating Temperature: 0°C ~ 70°C (TA)
• Noise - 10Hz to 10kHz: 60µVrms

Mechanical Equivalence Criteria:

• Mounting Type: Through Hole
• Package / Case: TO-92-3 (TO-226AA) Formed Leads

Compliance Criteria:

• RoHS Status: ROHS3 Compliant
• Product Status: Active

Substitute parts may vary in tolerance and temperature coefficient specifications while maintaining identical output voltage, current rating, and package configuration. These variations are acceptable when system design margins accommodate the specified parameter ranges.

Parameter Comparison

Engineering Selection Recommendations

LM385LPR-1-2 (Parametric Equivalent): This Texas Instruments part maintains identical electrical specifications and tolerance characteristics as the LM385LPRE3-1-2. Both parts are active products with ROHS3 compliance and identical package configuration. Selection of this substitute presents no performance trade-offs for applications within the specified operating temperature range.

LM385BZ-1.2RAG (MFR Recommended): This onsemi part provides tighter tolerance (±1% versus ±2%) and identical output voltage and current specifications. The higher temperature coefficient (80ppm/°C versus 20ppm/°C) and increased cathode current (20 µA versus 15 µA) represent measurable parameter differences. This part is suitable for applications where improved voltage accuracy is beneficial and thermal drift characteristics are acceptable within system design margins. All parts maintain active product status and ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can LM385LPR-1-2 be used as a direct replacement for LM385LPRE3-1-2? A: Yes. Both parts are manufactured by Texas Instruments with identical output voltage (1.235V), current rating (20 mA), tolerance (±2%), temperature coefficient (20ppm/°C), and TO-92-3 package configuration. Electrical and mechanical compatibility is complete.

Q: What are the key differences between LM385BZ-1.2RAG and the main part? A: The LM385BZ-1.2RAG offers improved voltage tolerance (±1% versus ±2%) but exhibits higher temperature coefficient (80ppm/°C versus 20ppm/°C) and increased cathode current (20 µA versus 15 µA). The output voltage and current ratings remain identical at 1.235V and 20 mA respectively.

Q: Are all substitute parts compatible with the same PCB footprint? A: Yes. All listed parts use TO-92-3 (TO-226AA) formed leads through-hole packaging, ensuring mechanical and footprint compatibility without PCB modifications.

Q: Do all substitute parts meet the same compliance requirements? A: Yes. All parts listed are ROHS3 compliant, REACH unaffected, and maintain active product status with identical ECCN and HTSUS classifications.

Q: Which substitute should be selected for improved accuracy? A: The LM385BZ-1.2RAG provides ±1% tolerance compared to ±2% for the main part and LM385LPR-1-2. Selection depends on system accuracy requirements and acceptable thermal drift characteristics.