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 PDTC143X series NPN resistor-equipped transistors R1 = 4.7 k , R2 = 10 k Rev. 11 9 December 2011 Product data sheet 1. Product profile 1.1 General description NPN Resistor-Equipped Transistor (RET) family in Surface-Mounted Device (SMD) plastic packages. Table 1. Product overview Type number Package PNP Package complement configuration NXP JEITA JEDEC PDTC143XE SOT416 SC-75 - PDTA143XE ultra small PDTC143XM SOT883 SC-101 - PDTA143XM leadless ultra small PDTC143XT SOT23 - TO-236AB PDTA143XT small PDTC143XU SOT323 SC-70 - PDTA143XU very small 1.2 Features and benefits 100 mA output current capability Reduces component count Built-in bias resistors Reduces pick and place costs Simplifies circuit design AEC-Q101 qualified 1.3 Applications Digital applications in automotive and Cost-saving alternative for BC847/857 industrial segments series in digital applications Control of IC inputs Switching loads 1.4 Quick reference data Table 2. Quick reference data Symbol Parameter Conditions Min Typ Max Unit V collector-emitter voltage open base - - 50 V CEO I output current - - 100 mA O R1 bias resistor 1 (input) 3.3 4.7 6.1 k R2/R1 bias resistor ratio 1.7 2.1 2.6