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 PDTB123TT PNP 500 mA, 50 V resistor-equipped transistor R1 = 2.2 k , R2 = open Rev. 4 8 November 2010 Product data sheet 1. Product profile 1.1 General description 500 mA PNP Resistor-Equipped Transistor (RET) in a small SOT23 (TO-236AB) Surface-Mounted Device (SMD) plastic package. NPN complement: PDTD123TT. 1.2 Features and benefits 500 mA output current capability Reduces component count Built-in bias resistor Reduces pick and place costs Simplifies circuit design AEC-Q101 qualified 1.3 Applications Digital application in automotive and Cost-saving alternative for BC807 series industrial segments in digital applications Control of IC inputs Switching loads 1.4 Quick reference data Table 1. Quick reference data Symbol Parameter Conditions Min Typ Max Unit V collector-emitter voltage open base - - 50 V CEO I output current - - 500 mA O R1 bias resistor 1 (input) 1.54 2.2 2.86 k