LM385BD-1.2

Overview

The LM385BD-1.2 is a micropower two-terminal bandgap voltage reference diode manufactured by onsemi. It provides a nominal output voltage of 1.235V with an initial tolerance grade of ±1.0%. Designed for operation over a wide current range from 10 µA to 20 mA, the device features low dynamic impedance and stable performance across time and temperature variations. The component is housed in a TO-92 package suitable for through-hole mounting.

Feature Summary

• Micropower two-terminal bandgap voltage regulation
• Wide operating current range from 10 µA to 20 mA
• Low dynamic impedance for excellent regulation

Applications

• Portable instrumentation circuits
• Battery-powered analog circuitry
• Precision current sources

Procurement Notes

Verify the specific suffix 'BD' against official datasheets to confirm the ±1.0% tolerance grade and package type. Ensure the manufacturer is identified as onsemi or its predecessor entities, as part numbers may have been transferred during corporate acquisitions. Confirm RoHS compliance status for the specific production batch.

Selection Notes

Select this component when a precise 1.235V reference is required with tight initial accuracy. The wide current range allows flexibility in biasing resistor selection. Consider the thermal dissipation limits within the TO-92 package if operating near the maximum current limit.

Part Context

This device belongs to the LM385 series of micropower voltage references. The series includes variants with different voltage outputs (e.g., 2.5V) and tolerance grades. The LM385 variant is rated for commercial temperature ranges (0°C to +70°C), distinguishing it from the industrial-rated LM285 series.

Replacement Considerations

• LM385BZ-1.2/NOPB
• LM385BCZB-1.2