LM309K Stable & High-Reliability 5V Voltage Regulator

The LM309K is a fixed 5V positive voltage regulator built to deliver reliable power in demanding electronic applications. It provides up to 1A output current, making it suitable for industrial equipment, control systems, communication devices, and embedded electronics. Designed with internal current limiting and thermal overload protection, the LM309K helps improve system reliability while protecting connected circuits during unexpected operating conditions. Its rugged TO-3 metal package offers excellent heat dissipation and dependable long-term performance. The regulator maintains consistent output voltage even when input voltage or load conditions change, helping sensitive components operate as intended. Whether you are maintaining legacy equipment or designing a dependable power supply, the LM309K remains a trusted choice for regulated 5V output. Florida Circuit supplies quality electronic components backed by responsive customer support. Contact our team today to request a quote for the LM309K.