H431LK

Overview

The H431LK is an adjustable precision shunt regulator available in SOT-23 and TO-92 packages. It features a programmable output voltage up to 40V with a guaranteed reference voltage tolerance of ±0.5%. The device operates within a cathode current range of -100mA to 150mA and maintains a low dynamic output impedance of 0.2Ω typical. It supports an operating temperature range from -60°C to +125°C, offering fast turn-on response and equivalent full-range temperature coefficients of 50 ppm/°C.

Feature Summary

• Programmable output voltage capability extending up to 40V
• Guaranteed tight reference voltage tolerance of ±0.5%
• Low dynamic output impedance for stable regulation
• Fast turn-on response suitable for switching applications

Applications

• Switching Mode Power Supply regulation
• Voltage monitoring circuits
• Adjustable voltage and current referencing

Procurement Notes

Verify the specific package variant (SOT-23 or TO-92) required for your design. Confirm that the manufacturer's absolute maximum ratings and thermal dissipation limits are respected during operation. Ensure compatibility with the system's voltage and current requirements before finalizing procurement.

Selection Notes

Select this component when precise voltage referencing is needed across a wide operating temperature range. The low dynamic impedance and fast response make it suitable for high-speed switching environments. Consider the package size constraints when choosing between SOT-23 and TO-92 options.

Part Context

The H431LK series serves as an adjustable precision shunt regulator manufactured by HY Electronic. It provides a cost-effective solution for voltage reference applications requiring high accuracy and stability. The device integrates essential features like ESD protection and wide operating temperature ranges into compact surface-mount and through-hole packages.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material.