800-0345-5 LIGHTING SCIENCE GROUP CORPORATION, 800-0345-5 Datasheet - Page 4

• Manufacturer Part Number: 800-0345-5
• Description: Heatsinks Heatsink 1.5in Atlas Series
• Manufacturer: LIGHTING SCIENCE GROUP CORPORATION

Specifications of 800-0345-5

• Product: Heatsinks
• Designed For: LEDs
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: HS-4150-0345

BL-3000 Heat Sinks
Mechanical Specifications
Lamina’s BL-3000 heat sinks are designed for all but Red and Amber BL-3000 LED light sources under natural convection conditions.
For the higher wattage Red and Amber light sources additional forced convection is necessary. Additional convection can be achieved
by attaching a CPU style fan to the back of the heat sink, connecting the fan to the paddles of the heat sink. Table 2 lists the applicable
thicknesses for Lamina’s standard products. Lamina application specialists can provide additional information on suitable fans and
attachment methods.
Table 2: BL-3000 Applicable heat sinks
Lamina Heat Sink Part Number
BL-3000 Heat Sink Performance
The heat sink thermal resistance and temperature rise over ambient for the desired input power (Power Dissipated) can be determined
using the charts below. The LED junction temperature is then determined by the following formula:
The thermal interface temperature rise is insignificant for most common operating conditions when light engines are screwed down and
thermal grease is used as the thermal interface material. Be sure to select a heat sink that maintains desired LED die junction
temperature and does not exceed maximum rated temperatures. The maximum rated LED die junction temperatures can be found on
the respective Product Data Sheets.
about your design, contact Lamina at 800.808.5822 or 609.265.1401 or visit www.laminaceramics.com.
To see how you can realize all these design benefits, to request a sample, or to speak with an engineer
Note:
Tj
Technical Data
800-0346-1
(LED Junction)
Applicable heat sinks when operated at rated LED light source power, 25°C ambient and unrestricted convection.
= T
Light Engine Rise
+ T
“A” Dimension
Interface Rise
1.0" (2.54cm)
+ T
Heat sink Rise
+ T
BL-3000 White, RGB+, Blue,
Ambient
Green
X
BL-3000 Red, Amber
NA
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