MAX6138BEXR30+T

Overview

The MAX6138BEXR30+T is a precision, two-terminal shunt mode bandgap voltage reference manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed reverse breakdown output voltage of 3.0V with an initial accuracy of 0.2%. The device operates within a temperature range of -40°C to +85°C and features a maximum temperature coefficient of 25ppm/°C. It supports a wide operating current range from 60μA to 15mA and utilizes a subminiature 3-pin SC70 surface-mount package.

Feature Summary

• Ultra-small 3-pin SC70 surface-mount package
• Laser-trimmed resistors for precise initial accuracy
• Low dynamic impedance ensuring stable reverse breakdown voltage
• Stable operation without external stabilizing capacitors

Applications

• Portable, battery-powered equipment
• Notebook computers
• Cell phones
• Industrial process control

Procurement Notes

Verify the specific suffix 'B' indicates the 0.2% initial accuracy grade and 'EXR30' specifies the 3.0V output voltage in the SC70-3 package. Confirm that the '+T' designation corresponds to tape-and-reel packaging as documented in the manufacturer's ordering information. Ensure compatibility with the required reverse current limits during integration.

Selection Notes

Select this component when space constraints require a subminiature footprint smaller than standard SOT23 packages. Choose this part if the application demands a fixed 3.0V reference with guaranteed stability across a wide current range. Consider the 0.2% accuracy grade for applications requiring tighter tolerance than the standard 0.5% option.

Part Context

This device belongs to the MAX6138 family of precision shunt voltage references. The family offers multiple fixed reverse breakdown voltages including 1.2205V, 2.048V, 2.5V, 3.0V, 3.3V, 4.096V, and 5.0V. All variants share the same ultra-small SC70 package and low-noise characteristics, differing primarily in their laser-trimmed output voltage and accuracy grades.

Replacement Considerations

Public confirmed substitute part numbers: MAX6138AEXR30+T, MAX6138CEXR30+T.