The maximum power dissipation of the LM119H/883 is 1.4W, but it can be increased to 2.5W with proper heat sinking.
To ensure stability, make sure to decouple the power supply pins with a 0.1uF capacitor, and use a minimum of 100nF capacitor at the output to prevent oscillations.
The recommended operating temperature range for the LM119H/883 is -55°C to 125°C, but it can operate up to 150°C with reduced performance.
Yes, the LM119H/883 can be used as a voltage regulator, but it's not recommended as it's primarily designed as a high-speed comparator. For voltage regulation, consider using a dedicated voltage regulator IC.
To reduce noise sensitivity, use a low-pass filter at the input, keep the input traces short, and use a ground plane to reduce electromagnetic interference.