13 V zener, ±1% tight tolerance
The 1N6003D/TR is a 13 V zener diode from Microchip Technology in the standard DO-35 axial package. The ±1% tolerance on the nominal zener voltage makes it suitable for precision voltage reference or clamping circuits where a standard ±5% part would drift outside the design window. Rated for 500 mW continuous power dissipation, the part can handle a steady-state current of roughly 38 mA at 13 V before hitting the thermal limit — enough for most reference and low-power shunt regulator applications. The 25 Ohm max impedance (Zzt) means the zener voltage shifts less than 25 mV per mA of current change, which keeps the reference stable across load variations.
Wide-temperature range and low leakage
Operating from -65°C to 175°C, this diode covers the full military temperature band. The reverse leakage is specified at 100 nA maximum at 9.9 V — a low enough figure that it won't load down a high-impedance bias network or drain a battery in a storage circuit. The forward voltage is 1.1 V max at 200 mA, so if the part is used as a general-purpose signal diode in forward conduction, the voltage drop is predictable and consistent with standard silicon diodes.
Active lifecycle — no EOL watch needed
The DO-35 axial body is a through-hole package that fits standard 0.100-inch pitch board layouts. The Tape & Reel packaging (TR suffix) indicates it ships on a reel for automated insertion — confirm the reel quantity against your pick-and-place setup and annual consumption before committing the line.