The 1N5954B TR is a through-hole zener diode manufactured by Central Semiconductor Corp. It is designed to maintain a stable voltage across its terminals, even when there are changes in the input voltage. This diode has a voltage tolerance of ±5%, a maximum forward voltage of 1.5V at 200mA, and a reverse leakage current of 1μA at 121.6V. With a maximum impedance of 700 Ohm, it is suitable for use in a variety of electronic circuits. The 1N5954B TR comes in a DO-41 package and can dissipate up to 1.5W of power. It is rated for use in a wide temperature range of -65°C to 200°C (TJ). This product is in the Discrete Semiconductor Products category and is currently active in the market.