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Texas Instruments LM285BYZ-2.5/NOPB — Discrete Semiconductors
Texas Instruments

LM285BYZ-2.5/NOPB Shunt Voltage Reference, 2.5V ±1.5%

MPNLM285BYZ-2.5/NOPB
End of Life

Texas Instruments LM285BYZ-2.5/NOPB, shunt voltage reference, 2.5V fixed output, ±1.5% tolerance, 50ppm/°C, 20 mA output, TO-92-3 through-hole package, -40°C to 85°C.

$2.61Ref. price · indicative, final on quote
LM285BYZ-2.5/NOPB datasheet
PackagingTO-226-3, TO-92-3 (TO-226AA)
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.
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Specifications

LM285BYZ-2.5/NOPB Technical Specifications
ParameterValue
Output typeFixed
Mounting typeThrough Hole
Reference typeShunt
Voltage - output (Min (Fixed))2.5V
Current - output20 mA
Current - cathode20 µA
Operating temperature-40°C ~ 85°C (TA)
PackageBox
Tolerance±1.5%
CaseTO-226-3, TO-92-3 (TO-226AA)
Noise - 10Hz to 10kHz120µVrms
Temperature coefficient50ppm/°C

Product details

2.5 V shunt reference in a TO-92-3 — what it is and where it fits

The Texas Instruments LM285BYZ-2.5/NOPB is a 2.5 V fixed-output shunt voltage reference in a TO-92-3 through-hole package. It delivers up to 20 mA output current with a minimum cathode current of 20 µA, making it suitable for biasing ADCs, comparators, and supervisory circuits where a stable 2.5 V rail is needed without a dedicated regulator. The shunt topology means it behaves like a Zener diode — an external resistor sets the bias current, and the reference sinks or sources current to hold the output at 2.5 V. Typical applications include industrial control loops, battery monitors, and power-supply feedback networks where the -40°C to 85°C temperature range covers most indoor and outdoor equipment.

Active lifecycle — no LTB pressure on this line item

The LM285BYZ-2.5/NOPB carries an Active lifecycle status and is RoHS3 compliant. The TO-92-3 package is a mature, high-volume form factor that manufacturers keep in production for industrial and MRO demand.

Frequently asked questions

What is the tolerance and temperature drift of LM285BYZ-2.5/NOPB?

The initial output tolerance is ±1.5 %, and the temperature coefficient is 50 ppm/°C. Over the -40°C to 85°C range, the output drifts approximately 7.8 mV worst-case.

What is the closest equivalent or replacement for LM285BYZ-2.5/NOPB?

The LM4132AMF-4.1/NOPB is a series reference with a different topology (series vs shunt), tighter tolerance (±0.05 %), lower drift (20 ppm/°C), and a 4.096 V output in a surface-mount package. It is not a pin-compatible drop-in — the circuit design must change from shunt to series topology. For a shunt-to-shunt replacement, look at other LM285 or LM336 family devices in TO-92 with the same 2.5 V output.