MAX6138BEXR30

Overview

The MAX6138BEXR30 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 operates within a temperature range of -40°C to +85°C. The device features an initial accuracy of 0.2% and a temperature coefficient of 25ppm/°C. It is housed in a subminiature 3-pin SC-70 surface-mount package measuring 1.8mm x 1.8mm. Laser-trimmed resistors ensure precise performance, making it suitable for space-critical applications requiring high stability.

Feature Summary

• Subminiature 3-pin SC-70 surface-mount package for space-critical designs
• Laser-trimmed resistors ensuring precise initial accuracy
• Two-terminal shunt mode bandgap architecture

Applications

• Space-critical electronic applications
• Precision measurement systems
• Portable instrumentation

Procurement Notes

Verify the specific suffix designation (e.g., '+' or '-') against official manufacturer documentation to confirm compliance status and exact electrical tolerances. Confirm availability through authorized distributors as supply may be limited. Ensure the selected variant matches the required output voltage and accuracy grade for the intended circuit design.

Selection Notes

Select this component when a compact form factor is required alongside stable voltage referencing. The SC-70 package offers significant size reduction compared to SOT23 alternatives. Verify that the shunt current requirements of the application fall within the device's operational limits and that the 3.0V output aligns with system reference needs.

Part Context

This part belongs to the MAX6138 series of precision shunt voltage references. The series includes various fixed output voltages such as 1.2205V, 2.048V, 2.5V, 3.3V, 4.096V, and 5.0V. All variants share the same low-profile SC-70 packaging and laser-trimmed construction methodology, differing primarily in their specified breakdown voltage and accuracy grades.

Replacement Considerations

Direct substitutes include other MAX6138 variants with different output voltages if the voltage level can be adjusted in the circuit design. Cross-reference with Maxim Integrated datasheets for pin-compatible alternatives within the same family.