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Analog Devices MAX6138CEXR12+T — Discrete Semiconductors
Analog Devices

MAX6138CEXR12+T Shunt Voltage Reference, 1.2205V ±0.5%

MPNMAX6138CEXR12+T
End of Life

Maxim Integrated MAX6138CEXR12+T, shunt voltage reference, fixed 1.2205 V output, ±0.5% tolerance, 25 ppm/°C, 15 mA output, 60 µA cathode current, SC-70-3, -40°C to 85°C.

$4.72Ref. price · indicative, final on quote
MAX6138CEXR12+T datasheet
PackagingSC-70, SOT-323
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

MAX6138CEXR12+T Technical Specifications
ParameterValue
Output typeFixed
Mounting typeSurface Mount
Reference typeShunt
Voltage - output (Min (Fixed))1.2205V
Current - output15 mA
Current - cathode60 µA
Operating temperature-40°C ~ 85°C (TA)
PackageTape & Reel (TR); Cut Tape (CT)
Tolerance±0.5%
CaseSC-70, SOT-323
Noise - 10Hz to 10kHz20µVrms
Temperature coefficient25ppm/°C

Product details

1.2205 V shunt reference — tight regulation in a tiny footprint

The MAX6138CEXR12+T from Maxim Integrated is a precision shunt voltage reference delivering a fixed 1.2205 V output. Tolerance holds to ±0.5%, and the temperature coefficient is rated at 25 ppm/°C, so the output stays within a few millivolts across the full -40°C to 85°C industrial temperature range. This makes it a clean reference for an ADC's Vref pin, a comparator threshold divider, or a low-drift bias rail in a sensor signal chain. Output current capability is 15 mA, and the shunt cathode current sits at 60 µA — low enough to keep the power budget tight in battery-powered or energy-harvesting designs. The reference type is shunt, meaning it operates like a precision Zener: it sinks current through an external resistor from a higher supply rail, regulating the voltage at the cathode. No separate bias supply is needed. Package is the SC-70-3 (SOT-323 footprint), a 3-pin surface-mount case.

Active production — no LTB clock ticking

The MAX6138CEXR12+T carries an Active lifecycle status from the manufacturer. ROHS3 compliant.

Frequently asked questions

Can MAX6138CEXR12+T operate at -40°C to 85°C?

Yes — the operating temperature range is rated -40°C to 85°C (TA), which covers industrial environments, outdoor telecom enclosures, and automotive cabin applications. The 25 ppm/°C temperature coefficient is specified across this full range.

What is MAX6138CEXR12+T's listed tolerance?

The tolerance is ±0.5%. This means the 1.2205 V nominal output can vary by up to ±6.1 mV from unit to unit at 25°C — a tight window that suits precision analog references.