KA78M12TU

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

The KA78M12TU is a three-terminal positive linear voltage regulator manufactured by onsemi. It provides a fixed output voltage of 12 V with a maximum continuous output current of 500 mA. The device accepts an input voltage range from 14 V to 35 V. It features internal thermal overload protection and short-circuit current limiting for robust operation. The unit operates within a temperature range of 0°C to +125°C and is housed in a TO-220-3 through-hole package.

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

• Provides a stable fixed positive output voltage
• Includes internal thermal overload protection
• Features short-circuit current limiting

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

• General-purpose power supply regulation
• Local card-level voltage regulation
• Embedded system power management

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

Verify the specific manufacturer source, as the KA78M12TU designation has been historically associated with Fairchild Semiconductor before its acquisition by onsemi. Confirm that the supplied component matches the onsemi datasheet specifications regarding pinout and electrical characteristics. Ensure the package type corresponds to the required TO-220-3 form factor for your application.

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

Select this component when a fixed 12 V output at up to 500 mA is required. It is suitable for applications needing basic linear regulation with built-in safety protections. Consider the thermal dissipation requirements given the linear topology and the TO-220-3 package's heat handling capabilities under varying load conditions.

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

This part belongs to the standard 78M series of three-terminal positive voltage regulators. The 'M' suffix typically denotes a 500 mA current rating, distinguishing it from the higher-current 78 series (e.g., 1 A or 3 A variants). It serves as a fundamental building block for low-noise, stable DC voltage generation in electronic circuits.

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

Compatible substitutes include MC78M12CTG and KA78M12RTF. These alternatives share the same 12 V output, 500 mA current rating, and TO-220-3 package, ensuring functional interchangeability in most designs.