Air Quality Control

Guangdong Takstar Electroacoustic Co.Ltd

Features: • Ø26mm Gold-sputtered Diaphragm: Wide dynamic range and fastresponse. • Broad Frequency Response: Captures subtle sound nuances. • Optimized Circuitry: Excellent signal-to-noise ratio for clearer audio. • High Sound Pressure Level: Ideal for vocals and instruments. • Zinc Alloy Body: Elegant champagne gold finish with EMI shielding. • Shock Mount: Rubber suspension enhances stability, reduces vibrations. • Dual-layer Metal Pop Filter: Minimizes plosive and air noise. Application: • Vocal recording, professional recording, live streaming, instrumentrecording.Specification: • Capsule: Ø26mm gold-sputtered diaphragm condenser • Polar Pattern: Cardioid • Frequency Response: 20Hz - 20kHz • Sensitivity: -32dB ±3dB (0dB=1V/Pa at 1kHz) • Equivalent Noise Level: ≤20dBA (IEC 581-5) • Maximum SPL: 130dB (THD ≤1% at 1kHz) • Output Impedance: 100Ω ±30% (at 1kHz) • Operating Voltage: 48V Phantom Power • Dimensions: 157 * 55 * 38 mm • Weight: Approx. 323g  

SM20 Professional Recording Microphone

Guangdong South HongMing (HK) Electronic Science & Technology Co Ltd

Range ofapplicationUsed in surge protection for IC, transistor, diode semiconductor switch circuit.Used in communication, telemetering, electrical control and various electronic equipmentsSuppress the instantaneous overvoltage caused by electromagnetic valve and relay.Suppress the instantaneous overvoltage caused by power supply.Suppress the instantaneous overvoltage caused by electronic circuits.

ZVR14D471KL837A0

Bipole International (HK) Ltd

Ceramic Capacitors exhibit low parasitics and excellent EMI filtering capabilities. In a multilayer configuration, they display high capacitance values and various voltage ratings over a wide temperature range. Multiple styles are available such as MLCC chips, leaded capacitors, stacked capacitors and capacitors that utilize unique geometries. 

Multilayer Ceramic Capacitors – MLCC

Dongguan Dongsong Electronic Co., Ltd.

The featured switching power model adapter comes in two types. Each adapter boasts low power consumption for cost saving. They come with built-in class B EMI filters. These adapters are highly suitable for&nbsp;computer peripherals and telecommunication equipment.
 
  Over-voltage protection. 
  Short circuit protection. 
  Available in wall-mounting type and desktop type. 
 

Switching Mode Power Adapter

Zhuhai Hongke Electronics Co., Ltd

Displayed is an LED driver that boasts a sturdy casing for added durability. This LED driver is well manufactured to offer high and stable performance which extents the lifespan of the LED driver. The LED attenuation is reduced with the in-built EMI filter. The aluminum mental housing of the LED driver allows easy heat dissipation. The automatic protection for over voltage, over current and high temperature increases its safety when using it.   Input voltage: 100-240V.   Passed an 8-hour full load aging test and a strict QC before delivery.   IP66/67 waterproof rating.   Suitable for outdoor and indoor application.   Certification: UL, RoHS.  

12V 60W Waterproof Constant VoltageLED Driver

RoMaks Limited

RoMaks Limited offers a broad range of inductors and magnetic cores for use in power electronics, signal filtering, EMI suppression, and energy storage. With in-stock availability, custom manufacturing capabilities, and expert technical support, we are your go-to partner for magnetic solutions tailored to high-performance electronic systems. Our components are designed to meet the increasing demands of today's compact, energy-efficient, and high-frequency circuits. Whether you need standard wire-wound inductors, surface-mount coils, or custom ferrite cores — RoMaks provides both standard and bespoke solutions optimized for your applications. 🌀 Our product offering includes:Inductors: Wire-wound inductors (SMD and through-hole) Power inductors (shielded, unshielded) Choke coils (common mode, differential) Toroidal inductors Air core and ferrite core inductors Magnetic Cores: Ferrite cores (toroid, E, U, RM, PQ, EE, EC, and more) Nanocrystalline and amorphous alloy cores EMI suppression beads and sleeves Custom-shaped magnetic cores for transformers, filters, and converters All components are manufactured under strict quality standards and conform to RoHS, REACH, and ISO 9001certifications. 🛠️ Custom Development Capabilities:RoMaks provides engineering and production services for companies requiring custom inductance values, magnetic characteristics, or mechanical dimensions. Tailor-made inductors and cores based on electrical requirements, winding specs, and application use cases. Custom coil winding with precise turn counts, multi-layer design, and shielding. Press mold development for custom ferrite or alloy cores. Material options: soft ferrite, iron powder, nanocrystalline, and more. We support low-MOQ prototyping as well as high-volume production with full documentation and sample testing available upon request. 🚚 Logistics &amp; Stock:Large selection of standard inductors and ferrite cores in stock. Fast delivery from our Hong Kong warehouse and trusted partner locations. Flexible order quantities for both development and mass production stages. OEM/ODM branding options available for large orders. ⚙️ Applications:Our inductors and cores are widely used in: Power supplies (SMPS, DC-DC converters) Electric vehicle systems Industrial motor control Signal processing and EMI suppression Consumer electronics and IoT Telecom and RF modules We work closely with design engineers, procurement teams, and manufacturers to ensure you receive the exact inductive components your system demands — quickly, reliably, and cost-effectively. 📩 Contact us today for datasheets, engineering support, or a quote on standard or custom inductive components. 

Inductors, Choke coils 

Jiangsu Youli Optics Spectacles Co., Ltd.

Photochromic Eyeglasses Lens, Photo Grey Lens, Photo Brown Lens, Color Change Lens, Spin Coating Photochromic Lens Index: 1.56, 1.60, 1.67Coating: Blue, Green, UC, HC, HMC, SHMCThe Photochromic Spin Coat Technology Spin coating technique is used for making a thin coating on relatively flat substrates. The solution of material to be coated is deposited onto the substrate which is spun off at a high velocity in a range of 1000-8000 rpm and leaving a uniform layer. Spin-coating technology makesthe photochromic coating on the surface of lens, so color only changes on lenses surface, while in-mass technology make the whole lens change color. How Do Spin Coat Photochromic Lenses Work? Spin coat photochromic lenses work the way they do because the molecules that are responsible for the darkening of the lenses are activated by the ultraviolet radiation in sunlight. UV rays can penetrate clouds, which is why photochromic lenses are capable of darkening on cloudy days. Direct sunlight is not required for them to work.They shield eyes from 100 percent of the harmful ultraviolet rays from the sun.This mechanic is also used inside most windshield glasses in cars. Windshields are designed this way to help drivers see in sunny conditions. This also means that since the UV rays that enter a car are already filtered by the windshield, spin coat photochromic eyeglasses will not themselves darken. Blue Block Spin Coat Photochromic Lenses Help Protect Against Harmful Blue Light Spin Coat Photochromic Lenses is available in blue block and non blue block.Blue block Spin Coat Photochromic lenses help protect against harmful blue light both indoors and outdoors. Indoors, blue block spin coat photochromic lenses filterblue lightfrom digital products. Outdoors, they reduceharmful UV light and blue light from sun light. Coating EMI layer: Anti-static HMC layer: Anti-reflective Super-Hydrophobic layer: Water-repell Photochromic layer: UV protection In-mass Photochromic VS Spin Coat Photochromic   

Photochromic Eyeglasses Lens

HK HANGDIN TECH LIMITED

This 1270/1330nm DFB 10Gigabit SFP+ transceiver is designed to transmit and receive optical data over single mode optical fiber The SFP+ module electrical interface is compliant to SFI electrical specifications. The transmitter input and receiver output impedance is 100 Ohms differential. Data lines are internally AC coupled. The module provides differential termination and reduce differential to common mode conversion for quality signal termination and low EMI. SFI typically operates over 200 mm of improved FR4 material or up to about 150mm of standard FR4 with one connector. The transmitter converts 10Gbit/s serial CML electrical data into serial optical data compliant with the 10GBASE-ER standard. An open collector compatible Transmit Disable (Tx_Dis) is provided. A logic “1,” or no connection on this pin will disable the laser from transmitting. A logic “0” on this pin provides normal operation. The transmitter has an internal automatic power control loop (APC) to ensure constant optical power output across supply voltage and temperature variations. An open collector compatible Transmit Fault (TFault) is provided. TX_Fault is a module output contact that when high, indicates that the module transmitter has detected a fault condition related to laser operation or safety. The TX_Fault output contact is an open drain/collector and shall be pulled up to the Vcc_Host in the host with a resistor in the range 4.7-10 kΩ. TX_Disable is a module input contact. When TX_Disable is asserted high or left open, the SFP+ module transmitter output shall be turned off. This contact shall be pulled up to VccT with a 4.7 kΩ to 10 kΩ resistor The receiver converts 10Gbit/s serial optical data into serial PECL/CML electrical data. An open collector compatible Loss of Signal is provided. Rx_LOS when high indicates an optical signal level below that specified in the relevant standard. The Rx_LOS contact is an open drain/collector output and shall be pulled up to Vcc_Host in the host with a resistor in the range 4.7-10 kΩ, or with an active termination. Power supply filtering is recommended for both the transmitter and receiver. The Rx_LOS signal is intended as a preliminary indication to the system in which the SFP+ is installed that the received signal strength is below the specified range. Such an indication typically points to non-installed cables, broken cables, or a disabled, failing or a powered off transmitter at the far end of the cable. 

SFP+ 10G BIDI  Transceiver

Shijiazhuang Suin Instruments Co.,Ltd.

Design Features Frequency range from 9kHz to 7.5GHz-160dBm Display Average Noise Level (Min.)&lt; -100 dBc/Hz @10 kHz Offset Phase Noise (Typ.)Total Amplitude Accuracy &lt; 0.8 dBPreamplifier and EMI filter are standardly configuredSpecifications 　SA9115SA9130SA9232SA9275Frequency　Range9kHz to 1.5GHz9kHz to 3.0GHz9kHz to 3.2GHz9kHz to 7.5GHzResolution1Hz　Aging Rate&lt;5×10-6/year&lt;1×10-6/yearFrequency Span　Frequency Span Range0Hz, 100Hz to 1.5GHz0Hz, 100Hz to 3GHz0Hz, 100Hz to 3.2GHz0Hz, 100Hz to 7.5GHzUncertainty±span/(sweep points-1)　SSB Phase Noise (fc=1.0GHz)-80dBc/Hz @10 kHz offset-96dBc/Hz @10 kHz offsetBandwidth　Resolution Bandwidth (-3dB)10Hz ~ 1MHz, step 1-3-10,RBW Uncertainty　10%, nominal (RBW&gt;1kHz)20%, nominal(RBW≥10Hz, sweep time≥5s)Video Bandwidth (-3dB)1Hz to 1MHz, step 1-3-10AmplitudeRangeDANL to +30dBmDANL to +20dBmMaximum Input LevelDC Voltage: 50VCW RF Power: +30dBm (1.0W) CW RF Power: +20dBm (0.1W) Max.Damage Level: +40dBm (10W)Max.Damage Level: +30dBm (1W)Displayed Average Noise Level (DANL)DANL (Preamplifier Off)typ. -125 dBm typ. -135 dBmDANL (Preamplifier On)typ. -135 dBmtyp. -152dBmReference Level Range-100 dBm to +30 dBm, step 1 dB　SweepSweep Time Range　10 ms to 3000 s (100Hz≤Span≤3GHz)1ms to 7500 s (100Hz≤Span≤7.5GHz)20 μs to 3000 s (Span=0 Hz)20 μs to 7500 s (Span=0 Hz)Sweep Time Uncertainty　5%, nominal (100Hz≤Span≤7.5GHz)0.5%, nominal (Span=0 Hz)Sweep ModeContinuous, SingleTrigger　Trigger SourceFree, Video, External　External Trigger Level5 V TTL level　Advanced Measurement　Channel Power, Adjacent Channel Power, N-dB bandwidth, Occupied Bandwidth　EMI200Hz, 9kHz, 120kHz　Input/Output　RF Input Impedance50 Ω　Standard frequency 　Frequency: 10MHz　Amplitude: 0dBm~10dBm (input) -3dBm to +3dBm (output)　Tracking Generator (-TG Model)　TG Frequency range9kHz to 1.5GHz9kHz to 3GHz100kHz to 3.2GHz100kHz to 7.5GHzTG Output level range-20dBm to 0dBm-40dBm to 0dBmTG Output level resolution1 dBInterface　TypeUSB Host &amp; Device, LAN, VGA, RS-232 (only SA9100 series available)　General Characteristic　Power Supply　Input Voltage: AC100V to 240V　Frequency: 50/60Hz (1±10%)　Power Consumption: 35W　Dimension &amp; Weight363*154*327 mm, Approx. 6.0 kg363*154*327 mm, Approx. 6.5kg

SA9275 Spectrum Analyzers

Yunpen Electronic Co., Ltd

This EMI filter is specially designed to attenuate conducted radio frequencies effectively. Sophisticatedly designed, the EMI filter requires little maintenance.&nbsp;The EMI filter is perfect for a variety of power supplies, monitors and other electronic gadgets.&nbsp;
   Built-in.   Load: YC, YD, YE, YK (chassis), YF and YG (plastic).  

EMI Filter

The EMI filter is an in-line device used to attenuate conducted radio frequencies effectively. The EMI filter is perfect for a variety of power supplies, monitors and other electronic gadgets. Professionally designed, the EMI filter ensures excellent performance.
   IEC connector.   Wide application.   Load: YA, YB, YL (fuse drawer), YO (snap-in), YQ and YR (switch).  

This is an EMI filter with a metal housing. It effectively attenuates conducted radio frequencies.&nbsp;This EMI filter is widely applied&nbsp;for industrial use.&nbsp;
   Industrial.   Load: YH, YI, YJ and YP.  

Anhui Hesion Trading Co Ltd

This is an EMI passive filter with a durable shell in a rectangular shape. It is sturdily constructed for long-lasting use. This filter is widely used in a variety of industrial, automation, medical, wind power, photovoltaic UPSs and transducers.   Rated voltage: 250V DC/AC.   Rated frequency: 50/60Hz.   Rated current: 20A.   Line: line at 1,770V DC/2s.   Line: case at 2,500V DC/2s.   Operating temperature: 40&deg;C.   Climatic category: -25 to +100&deg;C, tested at 21 days.   Shell size: 113 x 52 x 43mm.   Overall dimensions: 135 x 52 x 43mm.   High insertion loss and low leakage current.   Excellent inhibition in differential modes and common modes.   Certification: ENEC.  

EMI Passive Filter

Crown Rise Electronic Enterprises Limited

This is an EMI filter with a highly durable housing to offer full protection to the internal components. It is engineered to promise stable and reliable performance. This well-made filter is professional for use in medical and military industries.   EMC filters are also available.   Voltage: 480V AC 10A.   Frequency: 50/60Hz.   40/085/21.  

High & Low Technology Co Ltd

 	 Three phase EMI filters has three wires and four wires options,combine with single stage or two stages schematic, these types of 3 phase EMI/RFI filters typically suitable for controllers,industrial drives,large computer power supplies.  

3 Phase EMI Filter 

This filter is designed with an AC socket and fuses, and low cost EMC filters. It boasts a compact design with a durable structure. It is widely used in computer applications and power supplies. 	 IEC inlet EMI/RFI filters. 	 Power line filters. 	 More options of components value to different line filter applications and more options of schematic to meet the EMC requirement. 	 High performance compact power filters with IEC connectors.  

IEC Inlet Filter

Changzhou Pioneer Electronic Co., Ltd.

 EMI FILTERS Single Phase High Performance 250VAC 1A-1600A  	 Single phase EMI FILTER low pass filter PE2300-10-06 Rated Voltage 120/250VAC Rated Current 10A Operating Frequency 50/60Hz Temperature range HPF 25/085/21 Features: PE2300 single phase emi filter High performance with differential mode choke Good low frequency attenuation Available for inverter and variable speed motor device,which meet the RFI electromagnetic compatibility of European standards Custom design acceptable 	 Typical Application: Inverter Variable frequency drive Electrical and electronic equipment Building automation Industrial applications Machinery Electronic data processing equipment Various noisy applications requiering good filter performance  

EMI FILTERS Single Phase 

*Ultra-thin EMI filter with input &amp; output connector.
*Standard attenuation performance.
*Single phase metal chassis RFI filter.
*Unique design equipped with full feature in ingenuity.
*Rated current from 1~15A.
*Voltage: 115/250V AC.
*EMI filter with highest integrated design for portable applications.
*Vastly reduce the size of customer&#39;s device.
*Combine different EMC solution for your application.
*More options of components value.
*Safety approvals: VDE, CQC, CE.

Single Phase Filter

This EMI filter is an IEC connector integrative gadget. It is a professional component for medical and military equipment. The robust and rugged structure promises an extended service life.   Voltage: 250V.   Current: 6A.   Frequency: 50/60Hz.   High performance.  

 	 IEC Inlet EMI/RFI Filters:the filter with AC socket,fuses,low cost EMC filters,compact design Power Line Filters. 	 More options of components value to different Line Filter applications and more options of schematic to meet EMC requirement. 	 General purpose EMI Filter,most for computer applications and power supplies,high performance compact Power Filters with IEC connector.  

IEC Inlet EMI/RFI Filter

The EMI filter is designed to offer reliable and stable performance for both the common mode and differential mode. It delivers low leakage current for extra safety. The EMI filter is suitable for heavy-interference equipments such as inverter speed controlled systems.   EBTI series: excellent performance for both common mode and differential mode interference at low frequency.   EBJ5/40 series: 3-phase EMI power line filters 5 to 160A current ratings.   Typical terminal block is easy to connect, with safety protection.   High attenuation for both common and differential mode.  

Three-Phase EMI Filter

This EMI signal line filter is professionally designed for use in medical and military devices. Built with high-quality components, this filter promises superior and dependable performance. It is manufactured under strict QC to promise quality you can rely on. 
&bull;	Impedance: 75Ohm.
&bull;	Pass band: 6.5MHz.



EMI Signal Line Filter

This&nbsp;3-phase EMI filter is carefully designed for added durability. It guarantees high performance and stability. It is well-suited for a wide range of electronic appliances.

 
  Small-sized. 
  High-quality. 
 

3-Phase EMI Filter

This EMI filter is designed with high compatibility. It can be applied to a broad range of electronic devices. It is CE marked as proof of its excellent performance and safety.&nbsp;

 
  Easy to install.&nbsp; 
  High-quality. 
  Certificate: CE. 
 

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