13 V zener for automotive voltage rails
The ROHM UFZVFHTE-1713B is a 13 V nominal zener diode rated for 500 mW continuous power, qualified to AEC-Q101 for automotive and high-reliability applications. The ±2.69% tolerance on Vz means you can size the clamp or reference with less guard-band compared to a 5% part. Maximum impedance (Zzt) is 14 Ohms, which keeps the voltage stable under varying bias current — useful when this diode is the shunt element in a simple regulator or overvoltage clamp.
Thermal budget and leakage in the engine bay
Junction temperature is rated to 150°C, so this part can sit on a PCB near the engine block or exhaust path without derating the power below 500 mW. Reverse leakage is only 200 nA at 10 V reverse bias — that matters in always-on automotive modules where every microamp of standing current drains the battery over a parked weekend.
SOD-323F footprint and mounting
Packaged in SOD-323F (SC-90) — a small, low-profile surface-mount case that fits tight ECU layouts. The supplier device package is UMD2.
Active production and compliance
ROHS3 compliant.