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1. Product profile
1.1 General description
500 mA NPN Resistor-Equipped Transistors (RET) family.
[1] Also available in SOT54A and SOT54 variant packages (see Section 2).
1.2 Features
1.3 Applications
1.4 Quick reference data
PDTD123Y series
NPN 500 mA, 50 V resistor-equipped transistors;
R1 = 2.2 kΩ, R2 = 10 kΩ
Rev. 01 — 12 April 2005 Product data sheet
Table 1: Product overview
Type number Package PNP complement
Philips JEITA JEDEC
PDTD123YK SOT346 SC-59A TO-236 PDTB123YK
PDTD123YS
[1]
SOT54 SC-43A TO-92 PDTB123YS
PDTD123YT SOT23 - TO-236AB PDTB123YT
■ Built-in bias resistors ■ Reduces component count
■ Simplifies circuit design ■ Reduces pick and place costs
■ 500 mA output current capability ■ ±10 % resistor ratio tolerance
■ Digital application in automotive and
industrial segment
■ Cost saving alternative for BC817 series
in digital applications
■ Controlling IC inputs ■ Switching loads
Table 2: Quick reference data
Symbol Parameter Conditions Min Typ Max Unit
V
CEO
collector-emitter voltage open base - - 50 V
I
O
output current (DC) - - 500 mA
R1 bias resistor 1 (input) 1.54 2.2 2.86 kΩ
R2/R1 bias resistor ratio 4.1 4.55 5
