1500W Zener TVS in DO-13 — surge protection for 18V rails
Its 20.9V minimum breakdown voltage and 30.6V clamping ceiling at 49A Ipp make it a fit for protecting 18V nominal rails against transients in general-purpose industrial and telecom equipment. The DO-13 through-hole package suits boards where a hand-solderable, high-surge device is preferred over surface-mount alternatives.
For an 18V rail, the 12.6V headroom between nominal and clamp gives the downstream regulator or load a margin before breakdown.
Active production — sourcing posture for the BOM line
DO-13 through-hole — board fit and thermal path
The DO-13 package is a two-lead, hermetic-style metal can with a stud or tab for heatsinking. The through-hole mount requires a 0.036-inch (0.91 mm) diameter hole per lead on a 0.100-inch pitch. For sustained high-temperature operation, the average power dissipation must be kept below the package's thermal limit.