

Overview
The FZT951 is an uncategorised made by Diodes Incorporated in a SOT-223 package with 4 pins.
PCBKit's library has its KiCad symbol (Transistors:PNP B1 C2 E3 C4, from CERN's library) and its footprint (Package_TO_SOT_SMD:SOT-223, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C5245659). 2 open-source boards in 2 repositories on GitHub use it.
Symbol
Footprint
Order codes
1- FZT951LCSC C5245659
Pinout
4| Pin | Name | Type |
|---|---|---|
| 1 | B | Passive |
| 2 | C | Passive |
| 3 | E | Passive |
| 4 | C | Passive |
Open-source boards using it
All 2- 6 layers150 × 100 mm

- 4 layers160 × 100 mm

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<iframe src="https://pcbkit.io/embed/parts/diodes/FZT951" title="FZT951 in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/diodes/FZT951.jpg" alt="FZT951" width="1200" height="900">[](https://pcbkit.io/parts/diodes/FZT951)Questions
Is there a KiCad symbol and footprint for the FZT951?
Yes. The symbol is Transistors:PNP B1 C2 E3 C4 and the footprint Package_TO_SOT_SMD:SOT-223, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the FZT951?
SOT-223, with 4 pins. Its footprint is drawn on this page.
Where can I order the FZT951?
JLCPCB lists it as part C5245659, with 0 in stock; the sellers' links on this page open their listings.
What can replace the FZT951?
Parts like it in the library: the MSK1117-3.3V by MSKSEMI, the NCV1117ST33 by onsemi, the LD1117-1.8 by hongjiacheng and the MSK1117-5.0V by MSKSEMI. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the FZT951?
2 boards in 2 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
8MSK1117-3.3V
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SOT-223-40℃~+125℃@(Ta) 0.003%Vout 1.2V@(800mA) 1A 20V 3.3V 64dB@(120Hz) 6mA Fixed Over Current Protection、Over Temperature Protection Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSonsemiUncategorisedLD1117-1.8
SOT-2231 1.2V@(100mA) 1.8V 15V 1A 2uA Fixed Over Current Protection Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHShongjiachengUncategorisedMSK1117-5.0V
SOT-223SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSMSKSEMIUncategorisedAZ1117IH-3.3TRG1
SOT-223-40℃~+125℃@(Tj) 1 1.3V@(0.8A) 15V 3.3V 4mA 70dB@(120Hz) Fixed Over Current Protection、Over Temperature Protection Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSDiodes IncorporatedUncategorisedLD1117SG-3.3
SOT-223-25℃~+125℃ 0.003%Vout 1 1.05V@(100mA) 15V 3.3V 5mA 75dB@(120Hz) 950mA Fixed Over Current Protection、Over Temperature Protection Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSFoshan Blue Rocket ElecUncategorisedGM317AEMP
SOT-223-20℃~+125℃@(Ta) 1 1.2V~37V 1.5A 40V 75dB@(120Hz) Adjustable Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSGREENMICROUncategorisedLD1117-3.3
SOT-2231 1.2V@(100mA) 15V 1A 2uA 3.3V Fixed Over Current Protection Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHShongjiachengUncategorised