Skip to the content
PCBKitNew board
STR1550 on a board, in 3D

STR1550

STMicroelectronics

-65℃~+150℃ 1 NPN 100 10uA 12V 200mV 500V 500mA 500mW NPN SOT-23-3 Bipolar (BJT) ROHS

Extended
Category
Bipolar (BJT)
Package
SOT-23-3
Pins
3

Overview

The STR1550 is a bipolar made by STMicroelectronics in a SOT-23-3 package with 3 pins. -65℃~+150℃ 1 NPN 100 10uA 12V 200mV 500V 500mA 500mW NPN SOT-23-3 Bipolar (BJT) ROHS.

PCBKit's library has its KiCad symbol (Pinmap_Generic:Q_NPN_1B_2E_3C, from PCBKit's generic symbols) and its footprint (Package_TO_SOT_SMD:SOT-23-3, from KiCad's library), ready for a KiCad board. 2,720 are in stock at JLCPCB (part C907714). 1 open-source board in 1 repository on GitHub use it.

Symbol

Pinmap_Generic:Q_NPN_1B_2E_3CFrom PCBKit's generic symbols

Footprint

123
Package_TO_SOT_SMD:SOT-23-3From KiCad's library

Parameters

10
Collector - Emitter Voltage VCEO
500V
Current - Collector Cutoff
10uA
Current - Collector(Ic)
500mA
DC Current Gain
100
Emitter-Base Voltage(Vebo)
12V
Number
1 NPN
Operating Temperature
-65℃~+150℃
Pd - Power Dissipation
500mW
Vce Saturation(VCE(sat))
200mV
type
NPN

Order codes

1

Pinout

3
The pins of the STR1550
PinNameType
1BInput
2EPassive
3CPassive

Open-source boards using it

All 1
  • 4 layers68 × 100 mmGrippyboi, the printed circuit board in 3D

    Grippyboi

    gabbla/grippyboi

    Haldex Gen 1 controller

    204 parts

Show this part on your page

A live frame, for any web page
<iframe src="https://pcbkit.io/embed/parts/st/STR1550" title="STR1550 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/st/STR1550.jpg" alt="STR1550" width="1200" height="900">
A picture that opens the part, for a README
[![STR1550](https://pcbkit.io/embed/parts/st/STR1550.jpg?size=s)](https://pcbkit.io/parts/st/STR1550)

Questions

Is there a KiCad symbol and footprint for the STR1550?

Yes. The symbol is Pinmap_Generic:Q_NPN_1B_2E_3C and the footprint Package_TO_SOT_SMD:SOT-23-3, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the STR1550?

SOT-23-3, with 3 pins. Its footprint is drawn on this page.

Where is the STR1550 datasheet?

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

Where can I order the STR1550?

JLCPCB lists it as part C907714, with 2,720 in stock; the sellers' links on this page open their listings.

What can replace the STR1550?

Parts like it in the library: the ZXTP25020CFHTA by Diodes Incorporated, the KTC3551T-RTK/PW by KEC Semicon, the FMMT591QTA by Diodes Incorporated and the FMMT717QTA by Diodes Incorporated. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Which open-source boards use the STR1550?

1 board in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.

Parts like it

8