CUSTOM LED PCB - FULL SERVICE DESIGN, PROTOTYPING & MANUFACTURING
Yuji LED offers customized printed circuit board design, fabrication and assembly services for a variety of LED applications. Regardless of the product development stage, we will quickly integrate our high CRI LED components into your designs. Our capabilities include FPC, FR4 and MCPCB.
Many commodity-grade flexible LED strips and other PCB products will utilize a blanket resistor specification and insufficient copper weight, harming efficiency and consistency. We ensure that each of our 0.1V bin-range LEDs have the optimal resistor specifications, and ensure that the copper weight is sufficient for the current levels and operating environment.
POWER AND STABILITY
Forward voltage bins and LED drive current can be difficult to manage in production. Whether you would like to implement a constant voltage or constant current topology, or are not sure, we can help. We handle current limiting resistor specification pairing, so that you can simply specify a constant voltage level and desired current draw.THERMAL MANAGEMENT
Based on preliminary information regarding expected ambient temperatures and required light output, we can provide recommendations on appropriate board materials, LED density, drive current and any heatsinking requirements. Once working prototypes have been built, we can provide ISTMT case and solder point temperature measurements, and provide TM-21 lifetime projections based on third-party LM80 test data that have been completed for our LEDs.
LED & COMPONENT SPECIFICATION/LAYOUT
Looking for a high CRI, warm-white / daylight-white tunable circuit board design? Looking to maximize on lumens per dollar? Wondering if your LED density is sufficient, or if it might cause “spotting?” Need 1500 lumens per foot? Need 100 lumens per foot? We have you covered. Our experienced engineering team can provide recommendations and quickly provide schematic and design charts to optimize based on your requirements. We also have a variety of connector and other components to help integrate into power supply systems.
CHROMATICITY MANAGEMENT
Variation in LED chromaticity is sometimes a difficult issue. We recommend diagonal binning, which can reduce chromaticity variations to 50% - e.g. 2700K +/- 150K to 2700K +/- 75K, simply via strategic placement of SMD LEDs on a PCB. Rather than taking on the task of additional inventory and multiple reel variants per LED type, why not let us take care of this for you?
CUSTOM PRODUCT LOGO
We welcome OEM manufacture – send us your logo and we can provide custom logo and text silkscreening on your PCB.PCB FABRICATION AND ASSEMBLY CAPABILITIES
| PCB Construction | UNIT | FPC/FR4 | MCPCB |
| Layer count | layers | 1~20 | 1~2 |
| Board Thickness | mm | 0.5~3.5 | 0.5~3.5 |
| Heat conductivity | W/m-K | - | 1.0/1.5/2.0 |
| Copper Thickness | oz | 0.5~6 | 0.5~3 |
| Maximum PCB Size | mm | 585x1100 | 585x1100 |
| Minimum PCB Size | mm | 10x10 | 10x10 |
| Smallest Drill Diameter | mm | 0.3~3.5 | 0.3~3.5 |
| Plated holes | - | Yes | Yes |
| Non plated holes | - | Yes | Yes |
| Filled via | - | Yes | Yes |
| Minimum Trace Width and Spacing | mm | 0.1 | 0.1 |
| Bow & Twist Tolerance | % | 1% | 1% |
| Thickness Tolerance | % | ±10% | ±10% |
| Finishes | |||
| HASL | - | Yes | Yes |
| Lead Free HASL | - | Yes | Yes |
| OSP | - | Yes | Yes |
| ENIG (Electroless Nickel Immersion Gold) | - | Yes | Yes |
| ENEPIG (Electroless Nickel Electroless Paladium Immersion Gold) | - | Yes | Yes |
| Immersion Silver | - | Yes | Yes |
| Tin Nickel | - | Yes | Yes |
| Electrolytic Soft Gold | - | Yes | Yes |
| Electrolytic Hard Gold | - | Yes | Yes |
| Selective Gold | - | Yes | Yes |
| Mechanical | |||
| V Score, Edge to Copper | mm | 0.4 | 0.4 |
| V Score Angles | ° | 18,20,25,30 | 18,20,25,30 |
| Edge Deburring | - | Yes | Yes |