
Nexperia USA Inc.
An excellent upgrade from Nexperia, offering superior voltage and the fastest switching speed.
The BAV199 is a 70V, 215mA dual series switching diode in a SOT-23 package, now discontinued by some distributors. Fortunately, several modern, higher-performance alternatives from major manufacturers are available.
Replacements offer superior voltage and speed, which is generally safe.
SOT-23 is a standard, multi-vendor package with a consistent pinout for this family.
BAV99 is a multi-sourced, high-volume commodity part.
Direct replacement for BAV199 should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Upgrade to a modern BAV99 variant like onsemi's BAV99LT1G for improved voltage and speed.
The primary risk is the significant difference in switching speed (trr) between the original part and modern replacements.

Nexperia USA Inc.
An excellent upgrade from Nexperia, offering superior voltage and the fastest switching speed.
| Feature / factor | BAV199 | BAV99,215 | BAV99LT1G | LBAV99LT1G | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOT-23 | SOT23 (TO-236AB) | - | - | SOT-23 — Package is a form-fit match. |
| Voltage | 70V | 100V | - | - | 75V — Higher reverse voltage provides more margin. |
| Current | 215mA | 215mA | - | - | 215mA — Forward current rating matches. |
| Trr | 3µs | 4ns | - | - | 6ns — Significantly faster switching speed. |
| Configuration | Dual Diode Array (implied) | - | - | 1 Pair Series | — |
Verified drop-in options for BAV199 are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.