General advantages explained
All our great MASTER LED strips posses of these features (some products might vary)
LED strip main features
Standard soldering power pads - These solder pads are your first option to solder power input cables/connectors to LED strips. These solder pads do always contain our special SYSCON connecting throughout holes (described bellow)
2. Alternative solder power pads - These solder pads are great when additional devices / LED strips should be powered from the end of the LED line, suitable as standard power pads after shortening , or used as alternative soldering pads where soldering cables on far end will be too close to ALUminium profile (causing short-circuit)
3. Standard cut line - Your first choice to cut the LED strip to desired length (normally marked with sign of "scissors") In case your LED line is slightly longer than your ALU profile, most of our special LED strips MASTER, do contain special place to cut the last segment to even smaller size. Yes, you can cut the segment to smaller size (from the end where is no IC driver) read more about this special place bellow (4. and 5. point)
4. Alternative cut line (shortening cut-line) - on picture above - in case you LED strip is slightly longer than your ALU profile, you can cut the last segment to smaller size (only from one end - only 1 part where IC driver is present will be lit) Normally most of our designs do contain options to shorten the last segment from : 4SAUNA (3LED design ) to 2LEDs, and most of our other designs to as low as 4LEDs. Be aware of shortening the last segment - this last segment might perform slightly differently in some scenarios. Most situations where this is issue is :
analogue dimming - when powering off the installation, Voltage on power source will be gradually lowered in next few seconds, and this segment might for this short duration be more visible than others. This is only visible when powering off the device, or analogue dimmers will be used. Always use PWM dimming system.
standby state (power supply or dimming controllers) - even when power supply or dimming controller is dimmed to 0, or to OFF state, some tiny current might still be present. This tiny current might be sufficient to power up this "shortened segment" to very small brightness, thus might be lit and visible even when all other segments will be off. This is only visible for specific power supplies, or controllers, when digitally powered off, or 0% brightness is set.
Using LED strips bellow its Minimum allowed voltage - (commonly found when super long and thin wires are used, thus Voltage drop on this portion of LED strip is lower than parameter "Min. allowed voltage". Avoid using very long and thin power wires, which could improove visibility of this behaviour. If you find it in your scenario,, you can be sure, your LED strip at this area is powered bellow 100%.
5. SP end-of-line solder point (after shortening) - meant to apply small amount of solder/tin with soldering station at the place most close to the place you have shortened the last segment (used only when segment will be cut to "smaller non-standard size" at the place "4.alternative cut line".
6. SYSCON throughout holes (1.27mm pitch) - This tiny but important feature allows for two great benefits :
A. while soldering the tin will fill up the hole and will provide maximum current path and mechanical rigidity at this place
B. piercing the bottom mask with tiny needle, will allow a systematic miniature connector (SYSCON-INTERLINI) to be installed in the body of luminiare where this LED strip is used. (connector will allow the LED strip to be powered from connecting system where IDC connectors will be cut through insulation to the very thick interconnecting wires , hidden in back hollow inside the ALU profile. This allows you to use the LED strips for systematic installation of "ready made luminaires" with great current path (upto 30A) reaching anything from 25m (Superpower) upto 300m (Longrun).
7. Quality LEDs - only quality LEDs can perform and reach special conditions, IES/LDT plugins, luminous flux, corrosion resistivity. Cheap LEDs are cheap because their construction was "cheated on materials, design or details, some of them are enclosed here :
inner reflector - normally made our fo silver (general lighting) or gold (professional range, with great corrsion resistance to H2S, salt enviroment and others )...cheap LEDs use Aluminium, with almost no corrosion resitance (as it degrades, light is simply not "reflected" through epitax layer and is absorbed by this "degraded reflector"
bonding wire - all professional manufacturers use gold for this important inner wire, some cheap producers use aluminium or copper wires, which does degrade fast and melts in much lower working currents.
thermall substrate - affecting thermal resistance - important parameter, when it comes to dissipating the heat generated from LEDs....the lower the number, the faster the heat generated from LED is penetrated to substarte and to PCB, which will cool down the LEDs....thus the LED PN junction while working can reach much lower temperature and prolong its lifetime several times.
BINning - most professional producers do BIN their LEDs on 3 main parameters : Lm flux (Lm), CCT (K), Forward voltage (V). The more precisely you BIN (select and group similar LEDs together) the more "combinations of these 3parameters" you will have on stock...1 product can have as many as 2000 individual selection groups (BINs)....cheap manufacturers dont BIN at all or dont BIN precisely enough, so their products dont have precise Lm flux, or CCT can be anywhere +-500K (sometimes with pink or greenish tint which is not part of MacAdams diagram defining white spectrum) or its forward voltages will vary so much that it will affect their lifetime (when connected in parallel)
...and many more, feel free if you are interested in more details.
8. Constant current driver IC - LED products without constant current regulation are reaching lifetime 1000-15 000Hours, it is very rare to reach higher lifetime (L70B50)
9. Current setting device - this device sets current of the CC IC driver, In case it is missing or is not solder correctly, current will drop to 10mA.
10. ESD protection device - Electro Static Discharge device eliminates the high voltage peaks which could cause LEDs fail when touched the power wires.
ESD is often found when :
soldering station is not ESD safe (special antistatic conditions and "ESD safe" sign is required)
person touching the LED strip did not touch (discharged) to grounded metal structure (a grounding wrist bands are great while manipulating the LEDs)
be aware that any move on certain materials (carpets, laminate flooring, scissor lift machines, etc) are producing high ESD discharge
11. Flexible circuit board - Thin in construction, based on high temperature resistive core materials, yet with thick and highly pure copper paths are great details for quality FCB. High flexibility allows for great bending parameters, thin structure allows for better heat dissipation.
12. Heat resistant mask - Quality and highly reflective solder mask can greatly enhance final light output/scattering ) when installed in ALU profile. High temperature resistivity can allow certain products to be used in as high temperatures as 100°C (SAUNAs) or at direct sunlight permanently without yellowing (some tipes of silk screened masks can degrade/crack/yellow under harsh enviroment).
A. Polarity / Voltage marks
B. TJ thermal measuring point
C. Quality approved MASTER logo
D. Made in EU logo
E. Osram LEDs included logo
F. Made in EU logo
G. CE Logo
H. WEE logo
I. ESD logo
D1. Polyimide heat resistant core
D2. Heat conductive and resistant double sided tape
D3. Thin copper layer for flexibility
D4. Thick bottom copper layer for energy transport with minimal loss and great heat management
D5. axially shifted LEDs
D6. LEDs grouped together for better colour mixing
D7. LEDs evenly distributed due to better heat management