NCV1009D

Overview

The NCV1009D is a precision trimmed 2.5 V shunt regulator diode manufactured by onsemi. It features a fixed output voltage of 2.5 V with an initial tolerance of ±0.32%. The device supports an output current of 10 mA and operates within a temperature range of -40°C to 125°C. It utilizes a surface-mount 8-SOIC package (0.154 inch width). Key electrical parameters include a cathode current of 400 µA, a temperature coefficient of 15 ppm/°C, and a dynamic impedance optimized for versatility.

Feature Summary

• Precision trimming minimizes voltage tolerance and temperature drift
• Third terminal allows reference voltage adjustment to calibrate system errors
• Low dynamic impedance enhances operational versatility
• Extended operating temperature range suitable for automotive applications

Applications

• Automotive electronic systems requiring high-precision voltage references
• Data acquisition systems needing stable calibration sources
• Industrial control circuits utilizing shunt regulator topologies

Procurement Notes

Verify the specific suffix 'D' corresponds to the 8-SOIC package configuration in official documentation. Confirm end-of-life status as some listings indicate discontinuation. Ensure compatibility with lead-free manufacturing processes if required by design specifications. Cross-reference pinout diagrams to confirm interchangeability with legacy components like LT1009 or LM136Z-2.5 before implementation.

Selection Notes

Select this component when a fixed 2.5 V reference with tight initial tolerance is required in a surface-mount form factor. The inclusion of a trim terminal distinguishes it from standard two-terminal references, allowing for error calibration. Consider the 8-SOIC package constraints and thermal performance within the -40°C to 125°C range against alternative TO-92 packages if board space permits.

Part Context

The NCV1009 series belongs to onsemi's portfolio of precision voltage references designed for robust performance in demanding environments. The NCV prefix denotes automotive-grade qualification, ensuring reliability under extended temperature conditions. This specific model represents the surface-mount variant of the widely used 1009 family, maintaining functional equivalence with older through-hole designs while offering modern packaging benefits.

Replacement Considerations

Publicly confirmed direct pin-to-pin replacements include the LT1009 and LM136Z-2.5, provided external trim networks are eliminated.