High voltage, high speed planar passivated NPN power switching transistor in a SOT428 (DPAK) surface mountable plastic package.

Features and Benefits
  • Fast switching
  • Low thermal resistance
  • Surface mountable package
  • Very high voltage capability
  • Very low switching and conduction losses
  • DC-to-DC converters
  • High frequency electronic lighting ballasts
  • Inverters
  • Motor control systems
Quality, reliability & chemical content
Type Number Symbol Parameter Conditions Min Typ/Nom Max Unit
BUJ303AD VCESM collector-emitter peak voltage VBE = 0 V     1000 V
IC collector current       5 A
Ptot total power dissipation Tmb ≤ 25 °C     80 W
hFE DC current gain IC = 5 mA; VCE = 5 V; Tmb = 25 °C 10 22 30  
IC = 500 mA; VCE = 5 V; Tmb = 25 °C 14 25 35  
tf fall time IC = 2.5 A; IBon = 0.5 A; IBoff = -0.5 A; RL = 75 μ; Tmb = 25 °C   0.33 0.45 µs
IC = 2.5 A; IBon = 0.5 A; VBB = -5 V; LB = 1 µH; Tj = 100 °C   145 160 ns
160 200 ns
Type number Package Packing Product status Marking Orderable part number Ordering code (12NC)
Reel 13" Q1/T1 Volume production Standard Marking BUJ303AD,118 9340 656 88118
Type number Ordering code (12NC) Orderable part number Region Distributor Order sample
BUJ303AD 9340 656 88118 BUJ303AD,118 NA NA  


Chemical content Orderable part number Type number RoHS / RHF Leadfree conversion date MSL MSL LF
BUJ303AD BUJ303AD,118   BUJ303AD Leaded H   1 1

Chemical Content - BUJ303AD

As a proactive and sustainable company, WeEn Semiconductors has decided to publish chemical content information of its product portfolio through direct Internet access. With this information, we can provide data to our customers to facilitate any assessment regarding compliance to the RoHS directive and lead-free status. WeEn Semiconductors has set a standard in the semiconductor business with this detailed level of data, directly retrieved from its general product database. WeEn Semiconductors products are compliant to the EU Directives RoHS, ELV and the China RoHS.


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