Important notice Dear Customer, On 7 February 2017 the former NXP Standard Product business became a new company with the tradename Nexperia. Nexperia is an industry leading supplier of Discrete, Logic and PowerMOS semiconductors with its focus on the automotive, industrial, computing, consumer and wearable application markets In data sheets and application notes which still contain NXP or Philips Semiconductors references, use the references to Nexperia, as shown below. Instead of PZUxB series Single Zener diodes in a SOD323F package Rev. 02 15 November 2009 Product data sheet 1. Product profile 1.1 General description General-purpose Zener diodes in a SOD323F (SC-90) very small and flat lead Surface Mounted Device (SMD) plastic package. 1.2 Features Total power dissipation: 310 mW Tolerance series: B: approximately 5 % B1, B2, B3: sequential, approximately 2% Small plastic package suitable for surface mounted design Wide working voltage range: nominal 2.4 V to 36 V 1.3 Applications General regulation functions 1.4 Quick reference data Table 1. Quick reference data Symbol Parameter Conditions Min Typ Max Unit 1 V forward voltage I =100 mA --1.1 V F F 2 P total power dissipation T 25 C --310 mW tot amb 3 --550 mW 1 Pulse test: t 300 s 0.02 p 2 Device mounted on an FR4 Printed-Circuit Board (PCB), single-sided copper, tin-plated and standard footprint. 2 3 Device mounted on an FR4 PCB, single-sided copper, tin-plated, mounting pad for cathode 1cm .