KA78L05AZBU

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The KA78L05AZBU is a fixed positive linear voltage regulator from the KA78L05A series, manufactured by onsemi. It provides a fixed output voltage of 5 V with a maximum output current of 100 mA. The device utilizes a TO-92-3 through-hole package and operates within a temperature range of 0°C to +125°C. Key electrical specifications include a line regulation of 150 mV. This component is classified as a standard three-terminal positive voltage regulator designed for general-purpose power management applications requiring stable low-current DC supply.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Provides a fixed positive output voltage suitable for stabilizing power supplies
• Capable of delivering up to 100 mA output current for low-power circuits
• Includes internal protection mechanisms against overload conditions

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• General purpose electronic circuit power regulation
• Battery-powered equipment requiring stable 5V supply
• Embedded systems logic level power conditioning

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the manufacturer designation carefully, as this part number is associated with onsemi rather than Fairchild Semiconductor in official distributor databases. Confirm the specific suffix AZBU corresponds to the TO-92-3 through-hole package variant. Check for obsolescence status, as similar KA78L05 variants are listed as discontinued in several major inventory records. Ensure compatibility with existing PCB footprints before procurement.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a fixed 5V output at 100mA is required in a compact through-hole form factor. Consider the thermal dissipation capabilities inherent to the TO-92 package under expected load conditions. Evaluate the line and load regulation specifications against the sensitivity requirements of the downstream circuitry. Compare against alternative manufacturers' equivalents if supply chain continuity is a primary concern.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This regulator belongs to the widely adopted 78L05 family of three-terminal positive voltage regulators. These devices are standard components in analog and digital electronics for providing reliable reference voltages. The KA78L05A series represents an iteration of this classic topology, offering robust performance in consumer and industrial applications where simple, cost-effective voltage regulation is necessary.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

Direct pin-compatible substitutes include LM78L05ACZ and L78L05CZ. Verify that replacement parts meet the same 100mA current rating and 5V output specification. Ensure the alternative component supports the required operating temperature range and package type.