RHF1009AK1

Overview

The RHF1009AK1 is a radiation-hardened, adjustable precision shunt voltage reference manufactured by STMicroelectronics. It provides an output voltage range from 2.5 V to 5.5 V with an initial accuracy of 0.2%. The device operates within a temperature range of -55°C to +125°C and features a typical temperature coefficient of 30 ppm/°C. It draws a working supply current between 60 µA and 12 mA, with a maximum shunt current of 12 mA. Housed in a Flat-10 surface-mount package, this engineering model component is designed for high-reliability applications requiring stable voltage regulation under extreme environmental conditions.

Feature Summary

• Radiation-hardened design suitable for harsh environments
• Adjustable output voltage capability within specified limits
• High initial accuracy for precision reference applications
• Wide operating temperature range for industrial use

Applications

• Spacecraft power management systems
• Satellite instrumentation circuits
• Nuclear facility monitoring equipment
• High-reliability aerospace avionics

Procurement Notes

Verify the engineering model status and radiation hardness specifications against project requirements before procurement. Confirm that the Flat-10 package footprint matches the PCB layout. Ensure compatibility with the required output voltage range and current limits. Check for any specific handling instructions due to the sensitive nature of radiation-hardened components. Validate that the supplier provides appropriate documentation for quality assurance.

Selection Notes

Select this component when radiation tolerance and precision are critical. Consider the adjustable output feature for flexibility in circuit design. Evaluate the thermal performance within the specified temperature range. Compare the power consumption characteristics against system constraints. Ensure the package type fits the available board space and assembly capabilities.

Part Context

This part belongs to the RHF1009A series of radiation-hardened voltage references. It is distinct from standard commercial-grade references due to its enhanced durability against ionizing radiation. The series is intended for specialized industries where standard components may fail under high-radiation exposure. Understanding the family's general characteristics helps in assessing the specific benefits of the AK1 variant.

Replacement Considerations

No direct public substitute part numbers are confirmed for this specific radiation-hardened engineering model. Alternative solutions must be evaluated based on radiation tolerance, voltage range, and package compatibility. Consult manufacturer resources for potential upgrades or legacy replacements within the same product line.