The Infineon BAS70B5003 is a single Schottky diode in the PG-SOT23-3-3 surface-mount package, qualified to AEC-Q101 for automotive applications. Its 70 V DC reverse voltage and 70 mA average rectified current define the operating envelope for low-power clamping, freewheeling, and OR-ing diodes on 12 V and 24 V vehicle rails. The 1.5 pF junction capacitance at 0 V keeps signal edges clean in high-speed switching or RF detector circuits, while the 0.1 µA reverse leakage at 50 V ensures minimal quiescent drain in always-on modules.
AEC-Q101 grade — qualification scope
The Automotive, AEC-Q101 series designation means this part has passed the stress tests required for automotive-grade discrete semiconductors: temperature cycling, HTRB, H3TRB, and ESD robustness per the AEC-Q101 rev. The 150°C maximum junction temperature supports under-hood and engine-bay thermal profiles. Active lifecycle status confirms no end-of-life or last-time-buy notice is in effect, so the part is available for ongoing production builds without a forced redesign.
Package and footprint
Supplied in the PG-SOT23-3-3 package (TO-236-3 / SC-59 / SOT-23-3 footprint). The three-pin SOT-23 lands on a standard 0.95 mm pitch layout shared across the BAS70 family, making it a drop-in for existing Schottky footprints on automotive PCBs. Surface-mount assembly with standard reflow profiles; no special pad geometry required.