
EEE3088F PROJECT
xNiDx/EEE3088F-PROJECT
The door unlocks if there is an object in close proximity and a certain sound is pplayed for some time. This is to be paired with a device that emits a sound, which is not in the scope of this project.

UTC
-40℃~+125℃ 1 100uVrms 10mA 26V 3.3V 500mA 500mV@(500mA) Fixed Over Temperature Protection、Short Circuit Protection Positive TO-263-3 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHS
The LM2937L-33-TQ2-R is a voltage Regulators Linear, Low Drop Out (LDO) Regulator made by UTC in a TO-263-3 package with 4 pins. -40℃~+125℃ 1 100uVrms 10mA 26V 3.3V 500mA 500mV@(500mA) Fixed Over Temperature Protection、Short Circuit Protection Positive TO-263-3 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:LM2937L-33-TQ2-R, from EasyEDA) and its footprint (Package_TO_SOT_SMD:TO-263-3_TabPin4, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C87307). 1 open-source board in 1 repository on GitHub use it.
| Pin | Name | Type |
|---|---|---|
| 1 | VIN | Unspecified |
| 2 | GND | Unspecified |
| 3 | VOUT | Unspecified |
| 4 | PAD | Unspecified |

xNiDx/EEE3088F-PROJECT
The door unlocks if there is an object in close proximity and a certain sound is pplayed for some time. This is to be paired with a device that emits a sound, which is not in the scope of this project.
<iframe src="https://pcbkit.io/embed/parts/utc/LM2937L-33-TQ2-R" title="LM2937L-33-TQ2-R in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/utc/LM2937L-33-TQ2-R.jpg" alt="LM2937L-33-TQ2-R" width="1200" height="900">[](https://pcbkit.io/parts/utc/LM2937L-33-TQ2-R)Yes. The symbol is EasyEDA_Cloud:LM2937L-33-TQ2-R and the footprint Package_TO_SOT_SMD:TO-263-3_TabPin4, both drawn on this page. PCBKit places them on a board for you when you design with it.
TO-263-3, with 4 pins. Its footprint is drawn on this page.
UTC publishes it: the Datasheet link on this page opens it.
JLCPCB lists it as part C87307, with 0 in stock; the sellers' links on this page open their listings.
Parts like it in the library: the LM1084S-3.3/TR by HGSEMI, the LD1085D2M33R by STMicroelectronics, the UZ1085L-33-TQ3-R by UTC and the AMS1086CM-3.3 by Advanced Monolithic Systems. Check their datasheets: a part that fits the footprint may still differ in its ratings.
1 board in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.