This part is a kind of semiconductor called D414.

Function of this product has 2SD414.

Manufacturers : NEC

Image and pinout :

Some of the text within the PDF file :

DATA SHEET SILICON POWER TRANSISTOR 2SB548, 549/2SD414, 415 PNP/NPN SILICON EPITAXIAL TRANSISTOR FOR LOW-FREQUENCY POWER AMPLIFIERS FEATURES • Ideal for audio amplifier drivers with 30 W to 50 W output • High voltage • Available for small mount spaces due to small and thin package • Easy to be attached to radiators PACKAGE DRAWING (UNIT: mm) ABSOLUTE MAXIMUM RATINGS (Ta = 25°C) Parameter Collector to base voltage Collector to emitter voltage Emitter to base voltage Collector current Collector current Total power dissipation Total power dissipation Junction temperature Storage temperature Symbol VCBO VCEO VEBO IC(DC) IC(pulse)* PT (Ta = 25°C) PT (Tc = 25°C) Tj Tstg 2SB548/ 2SD414 −80/80 2SB549/ 2SD415 −100/100 Unit V V V A A W W °C °C www.DataSheet.co.kr −100/120 �� [ ... ]

D414 PDF Datasheet Download