

Overview
The LA55-P is a current Sensor made by LEM in a 插件 package with 3 pins. -12V~15V -40℃~+85℃ 2.5kVrms 200kHz 50A Support 插件 Current Sensors ROHS.
PCBKit's library has its KiCad symbol (Sensor_Current:LA55-P, from KiCad's library) and its footprint (Sensor_Current:LEM_LA25-P, from KiCad's library), ready for a KiCad board. 75 are in stock at JLCPCB (part C454693). 6 open-source boards in 2 repositories on GitHub use it.
Symbol
Footprint
Parameters
8- Band Width
- 200kHz
- Bidirectional Current Detection
- Support
- Current Range
- 50A
- Features
- Bidirectional detection
- Isolation Voltage(Vrms)
- 2.5kVrms
- Operating Temperature
- -40℃~+85℃
- Response Time (tr)
- 1us
- Voltage - Supply
- -12V~15V
Order codes
1- LA55-PLCSC C454693
Pinout
3| Pin | Name | Type |
|---|---|---|
| 1 | M | Output |
| 2 | - | Power in |
| 3 | + | Power in |
Open-source boards using it
All 6- 2 layers99.1 × 78.7 mm

- 4 layers100 × 100 mm

InverterLem
horychen/ProjectEureka
12 phase motor drive including inverter, microcontroller-mother-board, sensing, communication, DAC, etc.
104 parts17GPL-3.0 - 2 layers70.4 × 164.8 mm

SensorLEM portable
horychen/ProjectEureka
12 phase motor drive including inverter, microcontroller-mother-board, sensing, communication, DAC, etc.
76 parts17GPL-3.0 - 2 layers67.7 × 153.2 mm

SensorLEM portable(Guan to kicad)
horychen/ProjectEureka
12 phase motor drive including inverter, microcontroller-mother-board, sensing, communication, DAC, etc.
98 parts17GPL-3.0 - 4 layers111.7 × 25.8 mm

SensorLEM1
horychen/ProjectEureka
12 phase motor drive including inverter, microcontroller-mother-board, sensing, communication, DAC, etc.
79 parts17GPL-3.0 - 2 layers100 × 80 mm

Dc to dc buck converter
danieltyukov/tue-wireless-energy-transfer
TUE / Wireless Energy Transfer
34 parts1
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<iframe src="https://pcbkit.io/embed/parts/lem/LA55-P" title="LA55-P in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/lem/LA55-P.jpg" alt="LA55-P" width="1200" height="900">[](https://pcbkit.io/parts/lem/LA55-P)Questions
Is there a KiCad symbol and footprint for the LA55-P?
Yes. The symbol is Sensor_Current:LA55-P and the footprint Sensor_Current:LEM_LA25-P, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the LA55-P?
插件, with 3 pins. Its footprint is drawn on this page.
Where is the LA55-P datasheet?
LEM publishes it: the Datasheet link on this page opens it.
Where can I order the LA55-P?
JLCPCB lists it as part C454693, with 75 in stock; the sellers' links on this page open their listings.
What can replace the LA55-P?
Parts like it in the library: the LA55-P/SP1 by LEM, the LA100-P by LEM, the LA100-P/SP50 by LEM and the LA25-P by LEM. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the LA55-P?
6 boards in 2 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
5LA55-P/SP1
插件-40℃~+85℃ 12V~15V 1us 2.5kVrms 200kHz 50A Support 插件 Current Sensors ROHSLEMCurrent SensorsLA100-P
插件-12V~15V -40℃~+85℃ 100A 2.5kVrms 200kHz Bidirectional detection Support 插件 Current Sensors ROHSLEMCurrent SensorsLA100-P/SP50
插件-15V~-12V、12V~15V -40℃~+85℃ 2.5kVrms 200kHz Support ±150A 插件 Current Sensors ROHSLEMCurrent SensorsLA25-P
插件-12V~15V -25℃~+85℃ 25A 3kVrms Bidirectional detection Support 插件 Current Sensors ROHSLEMCurrent SensorsLA55-P/SP50
SIP-3-15V~-12V、12V~15V -40℃~+85℃ 10mA 1us 2.5kVrms 200kHz 50A Support SIP-3 Current Sensors ROHSLEMCurrent Sensors