1. One – sentence Description
LF 1005 – S is a precision current sensor using Hall – effect closed – loop technology, supporting DC, AC, and pulse current measurement, and providing up to 3.8kVrms electrical isolation protection.
2. Core Features
l Full – type current detection: Compatible with DC, AC, and pulse currents, with a measurement range covering 0~±1500A
l High isolation protection: UL 94 – V0 certified plastic housing, capable of withstanding 16kV surge voltage
l Wide – temperature – range stability: Operating temperature range of – 40℃~+85℃, storage temperature up to – 45℃~+100℃
l Fast response: <1μs step response, >100A/μs dynamic tracking capability
l Intelligent design: Integrated temperature compensation algorithm, built – in ±0.4% linearity error correction
3. Core Technical Indicators
| Category | Parameter | Typical Value | Unit |
| Electrical Performance | Rated Current (IPN) | 1000 | A |
| Conversion Ratio (K) | 1:5000 | – | |
| Measurement Resistance (RM) | 0.18Ω@±15V | Ω | |
| Accuracy Index | Linearity Error | <0.1% | % |
| Temperature Drift (IOT) | ±0.3mA | mA | |
| Dynamic Characteristics | Bandwidth (BW) | DC~150kHz | kHz |
| Transient Response Time (t) | <1μs | μs | |
| Safety Protection | Isolation Withstand Voltage (Vd) | 3.8kVrms | Vrms |
| Creepage Distance |
4. The Story Behind the Chip
LF 1005 – S was born at the intersection of the rapid development of industrial automation and new energy technologies. Traditional current transformers have issues such as insufficient frequency response and poor thermal stability, failing to meet the precision measurement requirements of fields like variable – frequency drives and UPS systems. The R&D team combined silicon – based MEMS technology with the fluxgate principle through an innovative closed – loop Hall architecture, achieving 150kHz high – frequency signal capture capability while ensuring an ultra – low temperature drift of ±40ppm/℃. Its patented dynamic compensation algorithm has broken through the traditional device’s ±0.5% nonlinearity bottleneck, meeting industrial – grade high – precision standards.
5. Innovative Design Philosophy
l Modular architecture: Separated primary through – hole (Φ38mm) and secondary terminal design, supporting dual installation modes of 35mm DIN rail/PCB
l Redundant safety mechanism: Double insulation structure with 175CTI materials, complying with IEC 61800 – 5 – 1 standard
l Intelligent calibration system: Built – in self – test function, realizing automatic zero – point compensation through the RM resistance network
l Green energy efficiency: 28mA (@±24V) ultra – low power consumption design, saving more than 30% energy compared to traditional Hall sensors
6. Typical Application Scenarios
l Motor drive control: Current loop feedback of frequency converters, supporting vector control algorithms
l New energy systems: MPPT tracking of photovoltaic inverters, charge and discharge monitoring of energy storage devices
l Industrial power supplies: Arc current detection for welding power supplies, coating thickness control for electroplating equipment
l Power grid monitoring: Input modules of harmonic analyzers, power quality governance devices
7. Unique Advantages
l Extreme dynamic performance: 100kHz bandwidth + 1μs response, perfectly adapting to the switching characteristics of SiC/GaN wide – bandgap devices
l Multi – physical – field compatibility: Passed 1000V power frequency withstand voltage test, capable of withstanding IEC 61000 – 4 – 3 3V/m radio – frequency interference
l Full lifecycle guarantee: – 40℃ low – temperature startup characteristics, suitable for harsh industrial environments
l Flexible configuration scheme: Supports customized turns ratio (1:100~1:10000), providing PBC packaging version
8. What Engineers Must Know for Selection
l Thermal design points: Temperature rise ≤35℃ under full load, recommended PCB heat dissipation area ≥3cm²/W
l Installation specifications: Use M5 screws (torque 4Nm) for vertical installation, recommend PTKA30 screws for horizontal installation
l Compatibility tips: The secondary side needs to be matched with a 1nF/500V capacitor to suppress common – mode noise
l Certification reference: Requires additional UL 60950 – 1 EMC testing (optional filtering version)
l Failure protection: Built – in reverse polarity protection diodes, recommend external TVS diodes to ±30V
If you need a more cost – effective alternative solution, please feel free to contact us. We will recommend more cost – effective domestic alternative materials to help small and medium – sized technology enterprises avoid risks such as unstable supply and high production costs during mass production of new products, so as to achieve more stable production and form market competitive advantages.
Contact:
Sylvia Xu | ECSource Components Co.,Limited
Top 10 Test Laboratory Distributors in Asia.
D-U-N-S Number:655918890 | ISO90001 Certificated Company
Phone/Whatsapp: 0086-19806586673
Email:sylvia@ecsource.net
Line Card : FPGA, RF, MEMORY,CONNECTOR,Power
