KA78L12AZTA

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

The KA78L12AZTA is a fixed positive linear voltage regulator from the KA78LXXA series, manufactured by onsemi (formerly Fairchild Semiconductor). It provides a nominal 12 V output with a maximum continuous current of 100 mA. The device operates within an input voltage range of 14.5 V to 35 V and supports through-hole mounting in a TO-92-3 package. It features thermal overload protection and short-circuit current limiting. The operating temperature range extends from -40°C to +125°C, with a typical quiescent current of 8 mA.

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

• Provides stable fixed positive voltage regulation for low-current applications
• Includes internal thermal overload protection to prevent damage during overheating
• Features short-circuit current limiting to protect the device under fault conditions

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

• General-purpose power supply regulation
• Battery-powered equipment requiring stable voltage rails
• Embedded systems with low current demands

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

Verify the manufacturer designation carefully, as onsemi acquired Fairchild Semiconductor's discrete and logic product lines. Confirm the specific suffix 'AZTA' corresponds to the TO-92-3 through-hole package and ammo pack shipping format. Check for end-of-life status or obsolescence notices, as older Fairchild-branded parts may have been discontinued or replaced by newer equivalents.

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

Select this component when a fixed 12 V output at up to 100 mA is required in a compact through-hole package. Ensure the input voltage remains within the specified 14.5 V to 35 V range to maintain proper regulation. Consider the thermal dissipation capabilities of the TO-92 package if operating near maximum current limits or high ambient temperatures.

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

This part belongs to the KA78LXXA family of three-terminal positive voltage regulators. It is functionally compatible with the industry-standard LM78Lxx series. The 'KA' prefix typically denotes Fairchild Semiconductor manufacturing origin, while the 'L' indicates the 100 mA current class, distinguishing it from the higher current 78xx series.

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

LM78L12ACZ

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

What is the maximum output current for the KA78L12AZTA?

The maximum output current is 100 mA.

Does the KA78L12AZTA include protection features?

Yes, it includes thermal overload protection and short-circuit current limiting.