EMI Filter CW1B-1A-L 6A Power Purification Lead Type Single Phase
AC Power Filter
1.Product Description
A lead-type single-phase AC power filter is a compact electronic
device designed to suppress electromagnetic interference (EMI) and
radio-frequency interference (RFI) in single-phase AC power lines.
It features integrated leads for easy installation, typically
filtering noise in both differential-mode (line-to-line) and
common-mode (line-to-ground) to ensure stable power supply and
protect sensitive equipment. Commonly used in industrial controls,
medical devices, and consumer electronics, it enhances system
reliability by reducing harmonics, voltage spikes, and
high-frequency noise while complying with EMC standards. Its
plug-and-play design simplifies integration into circuits without
additional wiring complexity.
1. Electromagnetic Interference Suppression (EMI/RFI Filtering)
Effectively filters out high-frequency noise (conducted
interference) in single-phase AC power supplies, including
electromagnetic interference (EMI) and radio frequency interference
(RFI).
2. Differential-Mode Noise Suppression
Reduces differential-mode interference between power lines (L-N) to
prevent voltage fluctuations from affecting equipment.
3. Common-Mode Noise Suppression
Suppresses common-mode noise between power lines and ground
(L-G/N-G), enhancing the system's interference resistance.
4. Surge & Spike Protection
Absorbs instantaneous voltage spikes and surges, protecting
downstream equipment from damage.
5. Harmonic Reduction
Reduces power supply harmonics, improves power quality, and
minimizes interference with the power grid and other equipment.
6. Enhanced System Reliability
Minimizes power supply noise interference with sensitive electronic
equipment (such as medical instruments and industrial control
systems) to ensure stable operation.
7. EMC Compliance
Meets electromagnetic compatibility (EMC) requirements, such as
CISPR, FCC, EN, and other certification standards.
8. Plug-and-Play Design
Features a lead-type design that requires no additional wiring and
can be directly connected to the circuit for easy installation.
9. Component Protection
Prevents high-frequency noise from damaging ICs, sensors,
communication modules, and other precision components.
10. Extended Equipment Lifespan
Reduces long-term damage to equipment caused by power supply
contamination, thereby extending overall service life.
This filter is widely used in industrial automation, medical
equipment, communication systems, laboratory instruments, and
consumer electronics.
2.Performance Characteristics
| Parameter | Specification |
| Model | CW1B-1A-L |
| Rated Current | 6A |
| Rated Voltage | 115/250V AC (Single-Phase) |
| Filter Type | Single-Stage EMI Suppression |
| Insertion Loss | High attenuation for both common-mode and differential-mode noise |
| Operating Frequency | 50/60Hz (Designed for AC power lines) |
| Leakage Current | <1mA (Typical, at 250V AC) |
| Temperature Range | -25°C to +85°C (Operating) |
| Safety Standards | Complies with UL, CE, and RoHS (Exact certifications may vary by
region) |
| Termination Type | Lead Type (Pre-wired with insulated leads for easy installation) |
| Housing Material | Flame-retardant plastic or metal casing (Depends on variant) |
| Applications | Power purification for industrial equipment, medical devices,
telecom, and IoT |
| EMI Attenuation | Effective noise suppression across 10kHz–30MHz range |
| Mounting Style | Chassis mount or DIN rail (Check model-specific details) |
3.Other Recommended Produtcs
4.Company Profile
