1N5729C [Microchip]

These glass axial-leaded DO-35 Zeners are available with an internal-metallurgical-bond option by adding a “-1” suffix. They regulate voltage over a broad operating current and temperature range, with extensive selection from 4.7 to 75 V. Standard voltage tolerances of plus/minus 5% with a B suffix, and tight tolerances available in plus or minus 2% or 1% with C or D suffix respectively. Flexible axial-lead mounting terminals, nonsensitive to ESD, minimal capacitance, and inherently radiation hard.