2N5551 Transistor | Datasheet | Pinout | Equivalent onsemi

2N5551 Pinout

2N5551 Pinout Diagram

The 2N5551 is an NPN type transistor that is often used in signal amplification and switching circuits, such as for amplifying audio signals or weak signals. It can also move small loads such as relays and LEDs.

By properly configuring the three pins of the 2N5551, we can realize a variety of circuit functions, including signal amplification, switching control, oscillator design, and driving small loads.

2N5551 Equivalent

This is a 2N5551 equivalent components table, they are NPN type transistors, the main role are signal amplification, switching control, etc.

Picture	Name	Makers	Maximum Power	Maximum Current	Maximum Voltage	Package Type
	2N5551	ON Semiconductor	625mW	600mA	160V	TO-92
	MPSA42	ON Semiconductor	625mW	500mA	300V	TO-92
	2N3440	Central Semiconductor	625mW	600mA	160V	TO-39
	BC547	STMicroelectronics	500mW	100mA	45V	TO-92
	KSC2383	Fairchild	900mW	1A	160V	TO-92L
	MJE13003	STMicroelectronics	40W	1.5A	400V	TO-126

When choosing equivalent components, firstly, you should choose the ones with the same polarity, and then see whether the parameters are matched, and whether the package is suitable.