MAX6138BEXR50-T

Overview

The MAX6138BEXR50-T is a two-terminal shunt voltage reference manufactured by Analog Devices under the Maxim Integrated brand. It provides a nominal output voltage of 5V with an initial accuracy of ±0.2% and a temperature coefficient of 25ppm/°C. The device utilizes BICMOS technology and is housed in a compact SC-70 (SOT-323) surface-mount package with three pins. It operates within a temperature range of -40°C to +85°C.

Feature Summary

• Compact SC-70 surface-mount packaging for space-constrained designs
• High precision with ±0.2% initial accuracy and low temperature drift
• Two-terminal shunt configuration simplifies circuit implementation

Applications

• Portable instrumentation requiring stable reference voltages
• Battery-powered systems where low static current is critical
• Data acquisition systems needing accurate analog-to-digital conversion references

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging when sourcing. Confirm the 'B' grade designation corresponds to the required ±0.2% accuracy level. Ensure the manufacturer is identified as Analog Devices or Maxim Integrated, as legacy branding may vary across supply channels. Check RoHS compliance status for environmental regulations.

Selection Notes

Select this component when a small form factor is required alongside high stability. The SC-70 package offers significant size reduction compared to traditional SOT-23 or MSOP alternatives. Consider the shunt topology requirements versus series regulator options based on power dissipation limits in the target application environment.

Part Context

This part belongs to the MAX6138 family of shunt voltage references designed for portable applications. The family includes various output voltages and accuracy grades. The EEXR suffix typically denotes the SC-70 package and reel packaging, distinguishing it from other pinout or tolerance variations within the broader product line.

Replacement Considerations

Direct substitutes include other MAX6138 variants with different output voltages if system design allows. Cross-reference with similar SC-70 shunt references from other manufacturers only if electrical parameters match exactly. Verify pin compatibility and thermal characteristics before substitution.