Nexperia introduces a range of A-selection Zener diodes for precise voltage reference with the industry’s lowest tolerance of ±1%

Nexperia announced the industry’s first range of A-selection Zener diodes. With a tolerance of just ±1%, the BZT52H-A (SOD123F) and BZX384-A (SOD323) series provide a higher precision voltage reference compared to the B (±2%) and C (±5%) variants. Matching the rising demands of mobile, portable/wearable, automotive and industrial applications and meeting the increasing regulatory requirements, the two series are also available as Q-portfolio devices.

The A-selection Zener diodes have a nominal working voltage range of 2.4 V to 75 V (E24 range). The devices feature a non-repetitive peak reverse power dissipation of ≤40W, total power dissipation ≤250mW and low differential thermal resistance. The low tolerance provides a higher precision voltage, which is especially important for test & measurement applications and enables engineers to replace more costly voltages reference devices. Instead of protecting the MOSFET directly, a more cost-efficient alternative is to connect a Zener diode in parallel to the drain-gate path. Once the Zener breaks through, the MOSFET switches on to stop the drain-source from going into an avalanche breakdown (more info).