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 voltage of 3.0V and is housed in a subminiature 3-pin SC-70 surface-mount package measuring 1.8mm x 1.8mm. The device features laser-trimmed resistors ensuring an initial accuracy of 0.2% and a temperature coefficient of 25ppm/°C. It operates within a temperature range of -40°C to +85°C.

Feature Summary

• Subminiature 3-pin SC-70 surface-mount package for space-critical applications
• Laser-trimmed resistors ensure precise initial accuracy
• Low temperature coefficient for stable performance across operating ranges

Applications

• Portable electronics requiring compact voltage references
• Battery-powered systems needing stable reference voltages
• Data acquisition systems with limited board space

Procurement Notes

Verify the specific suffix 'T' indicates tape and reel packaging configuration when sourcing. Confirm RoHS compliance status through official manufacturer documentation or authorized distributors. Ensure the part number matches the exact 3.0V output variant required for the design. Check current availability as supply may be restricted or subject to factory order constraints.

Selection Notes

Select this component when a 3.0V shunt reference is required in an SC-70 package. Consider the 0.2% initial accuracy and 25ppm/°C temperature coefficient for precision requirements. Evaluate the maximum shunt current capability against circuit load needs. Compare against other MAX6138 variants if different voltage outputs or accuracy grades are needed.

Part Context

This part 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 compact SC-70 package and low temperature coefficient characteristics, differing primarily in output voltage and initial accuracy grades.

Replacement Considerations

Other MAX6138 variants with different output voltages (e.g., MAX6138BEXR25+ for 2.5V) may fit mechanically but will not provide the correct reference voltage. Verify pinout compatibility before substituting with non-MAXIM devices.