Skip to the content
PCBKitNew board
BD550 on a board, in 3D

BD550

SPTECH

1 NPN 110V 150W 2V 5MHz 5V 5mA 75 7A NPN Standalone TO-3 Bipolar (BJT) ROHS

Extended
Category
Bipolar (BJT)
Package
TO-3
Pins
4

Overview

The BD550 is a bipolar made by SPTECH in a TO-3 package with 4 pins. 1 NPN 110V 150W 2V 5MHz 5V 5mA 75 7A NPN Standalone TO-3 Bipolar (BJT) ROHS.

PCBKit's library has its KiCad symbol (Pinmap_Generic:Q_NPN_1B_2E_3C_4C, from PCBKit's generic symbols) and its footprint (EasyEDA_Cloud:TO-3_L39.4-W26.7-P10.92-BL, from EasyEDA), ready for a KiCad board. 4 are in stock at JLCPCB (part C2907828).

Symbol

Pinmap_Generic:Q_NPN_1B_2E_3C_4CFrom PCBKit's generic symbols

Footprint

1234
EasyEDA_Cloud:TO-3_L39.4-W26.7-P10.92-BLFrom EasyEDA

Parameters

11
Collector - Emitter Voltage VCEO
110V
Configuration
Standalone
Current - Collector Cutoff
5mA
Current - Collector(Ic)
7A
DC Current Gain
75
Emitter-Base Voltage(Vebo)
5V
Number
1 NPN
Pd - Power Dissipation
150W
Transition frequency(fT)
5MHz
Vce Saturation(VCE(sat))
2V
type
NPN

Order codes

1

Pinout

4
The pins of the BD550
PinNameType
1BInput
2EPassive
3CPassive
4CPassive

Show this part on your page

A live frame, for any web page
<iframe src="https://pcbkit.io/embed/parts/sptech/BD550" title="BD550 in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>
A picture
<img src="https://pcbkit.io/embed/parts/sptech/BD550.jpg" alt="BD550" width="1200" height="900">
A picture that opens the part, for a README
[![BD550](https://pcbkit.io/embed/parts/sptech/BD550.jpg?size=s)](https://pcbkit.io/parts/sptech/BD550)

Questions

Is there a KiCad symbol and footprint for the BD550?

Yes. The symbol is Pinmap_Generic:Q_NPN_1B_2E_3C_4C and the footprint EasyEDA_Cloud:TO-3_L39.4-W26.7-P10.92-BL, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the BD550?

TO-3, with 4 pins. Its footprint is drawn on this page.

Where is the BD550 datasheet?

SPTECH publishes it: the Datasheet link on this page opens it.

Where can I order the BD550?

JLCPCB lists it as part C2907828, with 4 in stock; the sellers' links on this page open their listings.

What can replace the BD550?

Parts like it in the library: the 2N3773 by SPTECH, the MJ15015 by onsemi, the 2N5686 by SPTECH and the 2N6678 by SPTECH. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Parts like it

8