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Texas Instruments LM4050QBIM3-4.1/NOPB — Discrete Semiconductors
Texas Instruments

LM4050QBIM3-4.1/NOPB Shunt Voltage Reference, AEC-Q100

MPNLM4050QBIM3-4.1/NOPB
End of Life

Texas Instruments LM4050QBIM3-4.1/NOPB precision shunt voltage reference, AEC-Q100 qualified, 4.096V fixed output, ±0.2% tolerance, 50ppm/°C drift, 15 mA output, SOT-23-3 package.

$3.0Ref. price · indicative, final on quote
LM4050QBIM3-4.1/NOPB datasheet
PackagingTO-236-3, SC-59, SOT-23-3
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
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Specifications

LM4050QBIM3-4.1/NOPB Technical Specifications
ParameterValue
SeriesAutomotive, AEC-Q100
Output typeFixed
Mounting typeSurface Mount
Reference typeShunt
Voltage - output (Min (Fixed))4.096V
Current - output15 mA
Current - cathode73 µA
Operating temperature-40°C ~ 125°C (TA)
PackageTape & Reel (TR); Cut Tape (CT)
Tolerance±0.2%
CaseTO-236-3, SC-59, SOT-23-3
Noise - 10Hz to 10kHz93µVrms
Temperature coefficient50ppm/°C

Product details

What the ratings mean for your BOM

The 73 µA minimum cathode current sets the lower bound for the bias resistor. The 15 mA maximum output current limits how many loads you can drive.

Package and mounting

Housed in a SOT-23-3 package (also known as TO-236-3 / SC-59), this is a three-pin surface-mount device. The small footprint suits space-constrained layouts on automotive PCBs. The cathode is the reference output; the anode connects to ground; the third pin is the substrate (tie to ground per datasheet recommendation).

Lifecycle and sourcing reality

The LM4050QBIM3-4.1/NOPB is listed as Active with ROHS3 compliance. No end-of-life notice or last-time-buy schedule is in effect. For production BOMs, this part carries no imminent obsolescence risk.

Frequently asked questions

Is LM4050QBIM3-4.1/NOPB automotive qualified?

Yes, it is qualified to AEC-Q100 and belongs to the Automotive series, rated for -40°C to 125°C operation.

Does LM4050QBIM3-4.1/NOPB require an external resistor?

Yes, as a shunt reference it needs an external resistor from the supply to the cathode to set the bias current. The minimum cathode current is 73 µA, and the maximum output current is 15 mA.

When sourcing LM4050QBIM3-4.1/NOPB, what's the closest functional second-source — LM4132AMF-4.1/NOPB?

The LM4132AMF-4.1/NOPB is a series reference, not a shunt — it requires an input voltage above 4.496V and offers tighter tolerance (±0.05%) and lower drift (20 ppm/°C). It is not a pin-for-pin replacement; the circuit topology differs. For a shunt-to-shunt replacement, stick with the LM4050 family.