MAX6138BEXR33-T

Overview

The MAX6138BEXR33-T is a precision, two-terminal shunt mode bandgap voltage reference manufactured by Analog Devices Inc. under the Maxim Integrated brand. It provides a fixed output voltage of 3.3 V with an initial accuracy of 0.2% and a temperature coefficient of 25 ppm/°C. The device operates within a supply current range up to 15 mA and functions across a temperature range from -40°C to +85°C. Packaged in a compact SC-70-3 surface-mount format, it utilizes laser-trimmed resistors for stability.

Feature Summary

• Precision two-terminal shunt architecture utilizing bandgap technology
• Laser-trimmed resistors ensure high initial accuracy stability
• Subminiature SC-70 surface-mount package design

Applications

• Space-critical electronic applications requiring minimal footprint
• Portable devices necessitating low power consumption
• Battery-powered systems requiring stable voltage references

Procurement Notes

Verify the specific suffix configuration against official manufacturer documentation to confirm availability and exact electrical tolerances. Ensure compatibility with existing PCB footprints and thermal management requirements before integration. Cross-reference part numbers with authorized distributors to validate authenticity and sourcing channels.

Selection Notes

Select this component when a fixed 3.3 V reference with 0.2% accuracy is required in a small form factor. Consider the 25 ppm/°C temperature coefficient for environmental stability needs. Evaluate the maximum shunt current capability against circuit load requirements to ensure proper operation within the specified operating temperature range.

Part Context

This component belongs to the MAX6138 series of shunt voltage references. The series offers various fixed reverse breakdown voltages including 1.2205V, 2.048V, 2.5V, 3.0V, 4.096V, and 5.0V. Different grades provide varying levels of initial accuracy ranging from 0.1% to 0.5%, catering to diverse precision requirements.

Replacement Considerations

Compatible substitutes include other MAX6138 variants with different voltage outputs or accuracy grades, such as MAX6138AEXR33+T for higher precision. Verify pinout compatibility and thermal characteristics when substituting.