LM385PWE4-1-2 Equivalent & Substitute Parts

Part Overview

The LM385PWE4-1-2 is a shunt voltage reference IC manufactured by Texas Instruments, designed for precision voltage reference applications requiring fixed 1.235V output. This Surface Mount device in 8-TSSOP packaging is classified as Obsolete, necessitating identification of equivalent alternatives for ongoing design support and procurement continuity. Substitute parts maintain identical electrical specifications while offering different packaging formats or active product status to ensure design flexibility and supply chain reliability.

Substiute Parts

LM385PWE4-1-2

Texas InstrumentsIn Stock: 2557LM385PWE4-1-2 Datasheet

Current PartRFQ

LM385LPR-1-2

Texas InstrumentsIn Stock: 12949LM385LPR-1-2 Datasheet

MFR RecommendedRFQ

LM385PW-1-2

Texas InstrumentsIn Stock: 1403LM385PW-1-2 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM385PWE4-1-2 is determined by strict equivalence across the following critical parameters: Reference Type (Shunt), Output Type (Fixed), Voltage Output (1.235V), Current Output (20 mA), Tolerance (±2%), Temperature Coefficient (20ppm/°C Typical), and Noise specification (60µVrms at 10Hz to 10kHz). All identified substitutes maintain these electrical specifications without deviation.

Substitute parts are grouped into two categories based on packaging and product status:

MFR Recommended Substitute: LM385LPR-1-2 offers identical electrical performance with Through Hole mounting (TO-92-3 package) and Active product status, providing supply continuity for designs transitioning from Surface Mount to Through Hole implementation.

Parametric Equivalent: LM385PW-1-2 maintains Surface Mount configuration (8-TSSOP package) with identical electrical specifications but carries Last Time Buy status, suitable for designs requiring Surface Mount form factor with extended procurement windows.

Parameter Comparison

Engineering Selection Recommendations

For designs requiring Surface Mount configuration with extended procurement availability: LM385PW-1-2 is the parametric equivalent, maintaining identical 8-TSSOP package geometry and electrical specifications. Last Time Buy status permits extended lead times for component acquisition prior to final discontinuation.

For designs permitting Through Hole implementation with active product status: LM385LPR-1-2 is the MFR recommended substitute, offering Active product status ensuring long-term availability and supply chain stability. TO-92-3 package requires PCB layout modification but delivers identical electrical performance and ROHS3 compliance.

For existing designs locked to Surface Mount 8-TSSOP configuration: LM385PW-1-2 provides direct form-factor compatibility with Last Time Buy status, allowing procurement planning within defined discontinuation windows.

All substitute parts maintain ROHS3 compliance and REACH Unaffected status, ensuring regulatory alignment with the original LM385PWE4-1-2 specification.

Frequently Asked Questions (FAQ)

Q: Can LM385LPR-1-2 replace LM385PWE4-1-2 in existing PCB designs?

A: LM385LPR-1-2 provides identical electrical specifications but requires PCB redesign due to package change from Surface Mount 8-TSSOP to Through Hole TO-92-3. Electrical performance remains equivalent; mechanical integration differs.

Q: What is the difference between LM385PW-1-2 and LM385PWE4-1-2?

A: Both devices use 8-TSSOP Surface Mount packaging with identical electrical specifications. LM385PWE4-1-2 is Obsolete; LM385PW-1-2 carries Last Time Buy status, indicating extended but finite availability.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. LM385PWE4-1-2, LM385LPR-1-2, and LM385PW-1-2 are all ROHS3 Compliant with REACH Unaffected status.

Q: Which substitute offers the longest supply continuity?

A: LM385LPR-1-2 carries Active product status, indicating ongoing manufacturing and indefinite availability. LM385PW-1-2 is Last Time Buy with defined but extended procurement windows.

Q: Do substitute parts maintain the same electrical performance?

A: Yes. All substitutes maintain identical output voltage (1.235V), current (20 mA), tolerance (±2%), temperature coefficient (20ppm/°C Typical), and noise specifications (60µVrms at 10Hz to 10kHz).

Q: What is the Moisture Sensitivity Level difference between LM385LPR-1-2 and the Surface Mount alternatives?

A: LM385LPR-1-2 (Through Hole) carries MSL Not Applicable. LM385PWE4-1-2 and LM385PW-1-2 (Surface Mount) carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for either device.