SEARCH
— IC芯片 | 连接器 | 传感器 | 被动器件 —
BUJD203A,127 is listed in the Single Bipolar Transistors range at ChipApex. The manufacturer field lists WeEn Semiconductors. Its product description is TRANS NPN 425V 4A TO-220AB. Review the specifications below when checking this part for your BOM.
The BUJD203A,127 is an NPN silicon bipolar junction transistor manufactured by WeEn Semiconductors. It utilizes a TO-220F-3 through-hole package for single configuration mounting. Key electrical ratings include a maximum collector-emitter voltage of 425 V and a collector-base voltage of 850 V. The device supports a maximum DC collector current of 4 A with a power dissipation capacity of 26 W. Electrical characteristics specify a collector-emitter saturation voltage of 290 mV and a DC current gain range from 10 to 32. The component operates at temperatures up to +150 C.
Verify the specific suffix
Select this component when designing circuits requiring high voltage blocking capabilities combined with moderate current handling. The TO-220F-3 package facilitates direct heatsinking for thermal regulation. Ensure the application voltage remains below the 425 V limit and that base drive currents can support the specified hFE range for reliable saturation.
This part belongs to the WeEn Semiconductors discrete bipolar transistor portfolio. It serves as a specialized high-voltage switching element within their broader lineup of power semiconductors. The manufacturer integrates this component into industrial and consumer electronics supply chains, focusing on reliability and standard package compatibility for legacy and modern designs.
Cross-reference with other NPN transistors in the TO-220F-3 package offering similar 400 V+ ratings and 4 A current capacity. Verify pinout compatibility and thermal resistance values before substitution.
Explore related parts through Bipolar (BJT), Transistors, Discrete Semiconductor Products, all product categories.

Choose a DIP switch by contact type, coded positions, footprint and signal ratings. Check logic polarity, assembly conditions and PCB configuration behavior.
Read More
Understand how oscillators generate timing signals, how they differ from crystals, and which frequency, output and stability specs matter when choosing one.
Read More
BUJD203A,127 is listed in the Single Bipolar Transistors range at ChipApex. The manufacturer field lists WeEn Semiconductors. Its product description is TRANS NPN 425V…
Read More
BUJD203A,127 is listed in the Single Bipolar Transistors range at ChipApex. The manufacturer field lists WeEn Semiconductors. Its product description is TRANS NPN 425V…
Read MoreBUJD203A,127 is listed in the Single Bipolar Transistors range at ChipApex. The manufacturer field lists WeEn Semiconductors. Its product description is TRANS NPN 425V…
Read More
BUJD203A,127 is listed in the Single Bipolar Transistors range at ChipApex. The manufacturer field lists WeEn Semiconductors. Its product description is TRANS NPN 425V…
Read More
Understand how a comparator switches at a voltage threshold, why hysteresis prevents chatter, and which output and input specs matter.
Read More
See when an inductor behaves linearly, how DC bias and saturation reduce inductance, and which current and temperature curves to check.
Read More
BUJD203A,127 is listed in the Single Bipolar Transistors range at ChipApex. The manufacturer field lists WeEn Semiconductors. Its product description is TRANS NPN 425V…
Read More
BUJD203A,127 is listed in the Single Bipolar Transistors range at ChipApex. The manufacturer field lists WeEn Semiconductors. Its product description is TRANS NPN 425V…
Read More
BUJD203A,127 is listed in the Single Bipolar Transistors range at ChipApex. The manufacturer field lists WeEn Semiconductors. Its product description is TRANS NPN 425V…
Read More
Learn how rectifiers convert AC to DC, compare half-wave and bridge circuits, and select voltage, current, recovery and thermal ratings for your design.
Read More