LM285QDR-1-2-M Equivalent & Substitute Parts

Part Overview

The LM285QDR-1-2-M is a Voltage Reference IC manufactured by Texas Instruments, classified as a Power Management (PMIC) component. This device is designated as Last Time Buy, indicating it has reached end-of-life status and is no longer in active production. The part carries ROHS3 compliance and features unlimited moisture sensitivity rating (MSL 1). Due to its Last Time Buy status, identifying qualified substitute components is essential for design continuity and long-term supply chain planning.

Substiute Parts

LM285QDR-1-2-M

Texas InstrumentsIn Stock: 1044LM285QDR-1-2-M Datasheet

Current PartRFQ

LM285MX-1.2/NOPB

Texas InstrumentsIn Stock: 2628LM285MX-1.2/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LM285QDR-1-2-M is based on functional equivalence within the Texas Instruments LM285 voltage reference family. The primary substitute, LM285MX-1.2/NOPB, maintains core electrical characteristics required for shunt voltage reference applications. Substitution compatibility is determined by the following critical parameters:

Substitution Criteria:

• Reference Type: Shunt voltage reference topology
• Output Voltage: Fixed 1.235V nominal
• Voltage Tolerance: ±1%
• Manufacturer: Texas Instruments (same design family)
• RoHS Compliance: ROHS3 Compliant
• Moisture Sensitivity: MSL 1 (Unlimited)

The LM285MX-1.2/NOPB variant differs in packaging format (8-SOIC surface mount versus the original QDR package) and product status (Active versus Last Time Buy), but maintains electrical equivalence for circuit-level functionality.

Parameter Comparison

Engineering Selection Recommendations

For Last Time Buy Mitigation: The LM285QDR-1-2-M has reached end-of-life status. The LM285MX-1.2/NOPB is the manufacturer-recommended substitute and maintains Active product status with significantly higher inventory availability (2600 Pcs versus 967 Pcs).

Compliance Considerations: Both components are ROHS3 Compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, ensuring equivalent environmental and regulatory compliance for applications requiring these certifications.

Supply Chain Planning: Designs currently utilizing LM285QDR-1-2-M should transition to LM285MX-1.2/NOPB to ensure long-term component availability and supply continuity. The substitute maintains the same manufacturer lineage and design family, reducing qualification risk.

Frequently Asked Questions (FAQ)

Q: Can LM285MX-1.2/NOPB directly replace LM285QDR-1-2-M in existing designs?

A: The LM285MX-1.2/NOPB is the manufacturer-recommended substitute. Both components share the same reference voltage family (1.235V) and comply with identical RoHS and MSL standards. However, the packaging differs (8-SOIC surface mount versus original QDR package), requiring PCB layout modification.

Q: What is the significance of the Last Time Buy status?

A: Last Time Buy indicates the LM285QDR-1-2-M is no longer in active production and existing inventory represents the final available supply. Texas Instruments has designated LM285MX-1.2/NOPB as the active replacement for new designs and ongoing production.

Q: Are there electrical performance differences between these parts?

A: Both components are part of the LM285 voltage reference family with fixed 1.235V output. The substitute provides specified electrical parameters (±1% tolerance, 150ppm/°C temperature coefficient, 20mA output current) suitable for shunt voltage reference applications.

Q: What packaging considerations apply to substitution?

A: The LM285QDR-1-2-M uses a QDR package, while LM285MX-1.2/NOPB uses 8-SOIC (0.154", 3.90mm Width) surface mount packaging. PCB redesign is required to accommodate the different package footprint and pin configuration.

Q: Do both parts meet the same compliance requirements?

A: Yes. Both LM285QDR-1-2-M and LM285MX-1.2/NOPB are ROHS3 Compliant with MSL 1 (Unlimited) moisture sensitivity rating, ensuring equivalent compliance for regulated applications.