0.1uH To 10mH Axial Lead DIP Color Ring Inductor Choke Coil For LED Power Supply

The color ring inductor is an axial lead, through-hole power inductor wound on a ferrite or iron powder rod core and finished with an epoxy or green coating. The inductance value is marked with standard colour bands on the body, in the same way as a resistor, so the part can be identified quickly during assembly, inspection and field service without reading a printed code.

The axial construction with tinned copper leads is designed for automatic insertion and wave soldering, which keeps assembly cost low in high-volume through-hole production. This series covers a wide inductance range, typically from 0.1uH up to 10mH, with several body sizes so the same part family can serve everything from RF and signal filtering at the low end to energy storage and EMI suppression at the high end.

• Colour band marking makes the inductance value readable at a glance, which speeds up incoming inspection, assembly checking and field repair
• Axial lead construction is compatible with automatic insertion machines and wave soldering, reducing labour cost in through-hole production
• Wide inductance coverage from 0.1uH to 10mH lets one part family serve RF filtering, signal choking, EMI suppression and energy storage
• Ferrite or iron powder rod core selected by application: ferrite for higher inductance and higher Q, iron powder for better DC bias behaviour
• Full copper winding with controlled tension gives consistent inductance and DC resistance from batch to batch
• Epoxy coating in UL94V-0 grade protects the winding from moisture, dust and mechanical damage during handling and operation
• Good high frequency characteristics with a high Q value and a well-defined self resonant frequency for filter design
• Tinned copper leads give reliable solderability, with no dewetting or dry joints after wave soldering
• Simple and mature construction keeps the unit cost low, which suits cost-sensitive consumer and lighting products
• Wide operating temperature range of -40 C to +105 C, suitable for enclosed equipment and lighting fixtures
• 100% inductance and DCR testing before packing, with test data available on request

• LED lighting: LED drivers, downlight and bulb driver boards, strip light power modules
• Power adapters and chargers: wall-mount adapters, desktop adapters, small charging modules
• Switching power supplies: input and output filtering, EMI suppression and energy storage in low power SMPS
• Consumer electronics: TV boards, set-top boxes, audio equipment, remote controls, small appliances
• Communication equipment: routers, modems, telephone line filters, antenna matching circuits
• Industrial and instrument boards: sensor supplies, control boards, measuring instruments
• Security systems: CCTV cameras, alarm panels, access control units and intercoms
• Automotive aftermarket electronics: car audio, reversing cameras, DC-DC converter boards
• General purpose RF and signal filtering, DC line choking and noise suppression circuits

• Established in 2000, with 26 years focused on magnetic components for industrial control and power electronics; we are a manufacturer, not a trading company
• Self-owned 10,000 square metre factory with 8 complete production lines, which keeps lead times and quality consistent on repeat orders
• A 20-person R&D team supports you from drawing review and sample building through to mass production, and a 20-person QC team controls the process
• Complete certification framework: ISO 9001 and ISO 14001 system certification, with CE, CB, UL, cUL and RoHS product certification available
• Annual export value of USD 42 million, shipping to North America (50%), Northern Europe (18%), South America (15%) and Southeast Asia (15%), including OEM customers such as Midea and Federal Signal
• Flexible cooperation: MOQ from 1,000 pcs, DDP and DDU terms supported, direct factory delivery

• One part family covers the full inductance range, so you can source several values from a single qualified supplier instead of splitting the BOM
• Made to your drawing: inductance, tolerance, body size, lead length and coating colour are all set by your requirement, so the part drops into your existing footprint
• Correct colour code marking to standard rules, verified during production, which prevents mixed values reaching your insertion machine
• Stable inductance and DCR across large production runs, reducing rework and test failures on your line
• Cost-effective construction: for through-hole designs the axial inductor remains one of the most economical ways to hit a target inductance
• Free engineering support before the design is frozen: send us your target inductance, current, frequency and board space and we will recommend the most suitable core material and body size