LM4050AEM3-10 Equivalent & Substitute Parts

Part Overview

The LM4050AEM3-10 is a shunt voltage reference IC from Texas Instruments, delivering a fixed 10V output with ±0.1% tolerance in a SOT-23-3 surface mount package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. The part operates across the industrial temperature range of -40°C to 125°C and is suitable for precision voltage reference applications requiring low noise performance.

Substiute Parts

LM4050AEM3-10

Texas InstrumentsIn Stock: 834LM4050AEM3-10 Datasheet

Current PartRFQ

LM4050AEM3-10/NOPB

Texas InstrumentsIn Stock: 6486LM4050AEM3-10/NOPB Datasheet

Parametric EquivalentRFQ

LM4050AEM3X-10/NOPB

Texas InstrumentsIn Stock: 1167LM4050AEM3X-10/NOPB Datasheet

Parametric EquivalentRFQ

LM4050QAEM3-10/NOPB

Texas InstrumentsIn Stock: 1131LM4050QAEM3-10/NOPB Datasheet

Parametric EquivalentRFQ

LM4050QAIM3-10/NOPB

Texas InstrumentsIn Stock: 798LM4050QAIM3-10/NOPB Datasheet

Parametric EquivalentRFQ

TL4050A10QDBZR

Texas InstrumentsIn Stock: 5668TL4050A10QDBZR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LM4050AEM3-10 is determined by strict equivalence across the following critical parameters:

• Reference Type: Shunt
• Output Voltage: 10V fixed
• Output Current: 15 mA
• Tolerance: ±0.1%
• Temperature Coefficient: 50ppm/°C
• Noise Performance: 150µVrms (10Hz to 10kHz)
• Package: SOT-23-3
• Operating Temperature Range: -40°C ~ 125°C

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

Category 1: Active Production Parts – LM4050AEM3-10/NOPB, LM4050AEM3X-10/NOPB, and TL4050A10QDBZR are in active production status with ROHS3 compliance.

Category 2: Last Time Buy Parts – LM4050QAEM3-10/NOPB and LM4050QAIM3-10/NOPB are automotive-grade variants with AEC-Q100 qualification, currently in Last Time Buy status.

All substitute parts maintain identical electrical specifications and package footprint compatibility with the original LM4050AEM3-10.

Parameter Comparison

Engineering Selection Recommendations

For New Designs and Active Production: Select LM4050AEM3-10/NOPB, LM4050AEM3X-10/NOPB, or TL4050A10QDBZR. All three parts are in active production status with ROHS3 compliance, ensuring long-term availability and regulatory alignment.

For Automotive Applications: LM4050QAEM3-10/NOPB and LM4050QAIM3-10/NOPB are automotive-grade variants qualified to AEC-Q100 standard. These parts are currently in Last Time Buy status; procurement should prioritize these if automotive qualification is required.

Cathode Current Consideration: LM4050QAIM3-10/NOPB specifies 103 µA cathode current versus 110 µA for other variants. This 7 µA difference is within typical application tolerances but should be evaluated in current-sensitive circuit designs.

Packaging: All substitute parts are supplied in Tape & Reel (TR) packaging, suitable for automated assembly. The original LM4050AEM3-10 packaging format is not specified; confirm packaging compatibility with your procurement and assembly requirements.

Frequently Asked Questions (FAQ)

Q: Can LM4050AEM3-10/NOPB directly replace the obsolete LM4050AEM3-10?

A: Yes. Both parts are electrically identical across all specified parameters: 10V fixed output, ±0.1% tolerance, 50ppm/°C temperature coefficient, 150µVrms noise, and SOT-23-3 package. The primary difference is product status (Active vs. Obsolete) and RoHS compliance (ROHS3 vs. non-compliant). The /NOPB suffix indicates lead-free, RoHS-compliant packaging.

Q: What is the difference between LM4050AEM3X-10/NOPB and LM4050AEM3-10/NOPB?

A: Both parts share identical electrical specifications and package format. The "X" designation typically indicates extended temperature range or manufacturing process variation within Texas Instruments' product line. Electrical performance and substitution compatibility are equivalent.

Q: Are automotive-grade parts (LM4050QAEM3-10/NOPB, LM4050QAIM3-10/NOPB) suitable for non-automotive applications?

A: Yes. Automotive-grade parts with AEC-Q100 qualification exceed standard industrial requirements and are fully compatible with non-automotive applications. These parts are currently in Last Time Buy status; availability may be limited.

Q: What does "Last Time Buy" status mean?

A: Last Time Buy indicates the manufacturer will no longer accept new orders after a specified date. Existing inventory may still be available, but long-term procurement cannot be guaranteed. For designs requiring these parts, transition to Active production alternatives (LM4050AEM3-10/NOPB, LM4050AEM3X-10/NOPB, or TL4050A10QDBZR) is recommended.

Q: Is the 7 µA cathode current difference between LM4050QAIM3-10/NOPB (103 µA) and other variants (110 µA) significant?

A: The 7 µA difference represents approximately 6% variation in cathode current. For most applications, this is within acceptable tolerance. However, in circuits where cathode current directly affects performance or power consumption, this parameter should be evaluated against your specific design requirements.

Q: Are all substitute parts available in Tape & Reel packaging?

A: Yes. All listed substitute parts are supplied in Tape & Reel (TR) packaging, suitable for automated pick-and-place assembly. Confirm packaging format compatibility with your assembly process before procurement.

Q: Can TL4050A10QDBZR replace LM4050AEM3-10 in existing designs?

A: Yes. TL4050A10QDBZR is electrically equivalent across all critical parameters and uses the same SOT-23-3 package. The different base product number (TL4050 vs. LM4050) reflects Texas Instruments' product line segmentation but does not affect functional compatibility or performance.