Consistent Illumination Uniformity 2835 Protect Eyes For Backboard Lamp
Application Introduction:
Blackboard lamp is a special lamp for blackboard area lighting in the classroom. It is different from the lamps and lanterns on the seats in the classroom. The reflector adopts a special angle design. Its light distribution curve is laterally asymmetric, and the vertical illumination is high, which evenly illuminates the blackboard surface. When asking, when the projection direction of the blackboard lamp is 55 °, the shading angle is more than 45 °, so that students can watch the blackboard without direct glare interference and take care of their eyes.
Quick details:
| Input Voltage(V): | 3V |
| Warranty(Year): | 2-Year |
| Type: | Smd Led Chip 2835 |
| Lighting solutions service: | Lighting and circuitry design |
| Luminous Efficacy(lm/w): | 28-30lm |
| Lifespan (hours): | 50000 |
| Working Time (hours): | 20000 |
| Chip Material: | INGAN |
| Emitting Color: | white color |
| Power: | 0.2W |
| Viewing Angle(°): | 120 Degree |
| Color Rendering Index(Ra): | 95 |
| Color Temperature: | 4800-5200k |
| Place of Origin: | Suzhou ,jiangsu |
| Application: | teaching room lights |
| Package Type: | Suface Mount Package |
| Forward Current: | 60MA |
| Size: | 2.8*3.5*0.65mm |
| Packing: | 4000 Pcs/Roll |
Product specification:
Package Structure:
Figure: 0.2W medium power thin series circuit diagram
Tolerance: ±0.2mm unless otherwise noted
Electrodes: Ag Plating Copper Alloy
Encapsulating Resin: Silicon Resin
Package: Heat-Resistant Polymer
Absolute Maximum Ratings:
| Item | Symbol | Absolute Maximum Ratings | Unit |
| Forward Current | IF | 60 | mA |
| Reverse Voltage | Vr | 5 | V |
| Pulsed Forward Current | IFP* | 80 | mA |
| Power dissipation | PD | 0.2 | W |
| Operating Temperature | TOP | -40~85 | ℃ |
| Storage Temperature | TST | -40~85 | ℃ |
| Electrostatic Discharge | ESD | 2000(HBM) | V |
| Junction Temperature | Tj | 120 | ℃ |
| LED Thermal resistance | Rth s-j | 30 | ℃/W |
Typical Electro-Optical characteristics curves:
LED Reliability Test List:
| Test Item | Test Conditions | Standard | Qty(Pcs) | Ac/Re |
| Life Test | 25℃,1000Hrs@60mA | / | 20 | 0/1 |
| High Temperature | 85℃,1000Hrs@60mA | / | 20 | 0/1 |
| Low Temperature | -40℃,1000Hrs@60mA | / | 20 | 0/1 |
| High Humidity Heat | 85℃,85%RH, 1000Hrs@60mA | / | 20 | 0/1 |
| Low Temperature Storage | -40℃,1000Hrs | JEITA ED-4701 200 202 | 20 | 0/1 |
| High Temperature Storage | 100℃,1000Hrs | JEITA ED-4701 200 201 | 20 | 0/1 |
| Temperature Cycle | (-40'C 30mins --25'C(5mins)--100'C(30mins) ,Temp changing rate:3+/-0.6'C/min) | JEITA ED-4701 100 105 | 20 | 0/1 |
| Thermal Shock | -40'C(15mins) --100'C(15mins),changing time <5mins ,300C | MIL-STD-202G | 20 | 0/1 |
| Pulse Life Test | Tp=1ms,DC=0.1,D=Tp/T @ 3×150mA | / | 20 | 0/1 |
| ESD Test(HBM) | 2000V,200V/Step, Forward & Reverse Test both 3times | AEC (Q101-001) | 20 | 0/1 |
| Soldering Resistance | 260±5℃,10S,3times Pre-treatment 30℃,70%RH | JEITA ED-4701 300 302 | 20 | 0/1 |
| Reflow IV Decay | 260±5℃,10S,1time Pre-treatment 30℃,70%RH,168Hrs | / | 20 | 0/1 |
Packaging:
Cautions:
The encapsulated material of the LEDs is silicone. Therefore the LEDs have a soft surface on the
Top of package. The pressure to the top surface will be influence to the reliability of the LEDs. Precautions Should be taken to avoid the strong pressure on the encapsulated part. So when use the picking up nozzle,The pressure on the silicone resin should be proper.
Soldering iron:
When hand soldering, the temperature of the iron must less than 300℃ for 3 seconds.
The hand solder should be done only one times
SMT Reflow Soldering Instructions SMT:
Reflow soldering should not be done more than two times ；
When soldering , do not put stress on the LEDs during heating ;
The recommended reflow soldering profile as following ;
Product features:
Adopt good quality chip and frame ,antistatic good stability Ultra low attenuation
High brightness ,low attenuation high color rendering
Minimum 70,80,90 95 CRI options
Strong welding and good stability undead light
Product series and company logo on the front
CE ROHS LM80 Certification
Production Process:
Product Tags:
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