Bridgelux SMD 3838 Triple CCT F90 3V

Introduction

The Bridgelux SMD 3838 low power LED is cold-color targeted, ensuring LEDs fall within their specified color bin at typical application conditions of 25°C. The SMD 3838 is ideal as a drop-in replacement for emitters with an industry-standard 3.8mm x 3.8mm footprint.

Product Feature Map

Bridgelux SMD LED products come in industry-standard package sizes. These LEDs are optimized for cost and performance, helping to ensure highly competitive system lumen per dollar performance while addressing the stringent efficacy and reliability standards required for modern lighting applications.

Product Selection Guide

The following product configurations are available:

Table 1: Selection Guide, 3838 pulsed Measurement Data at 120mA (Tsp=25°C)

Table 2: Selection Guide, 3838 pulsed Measurement Data at 120mA (Tsp=85°C)

Notes for Table 1 & 2:

• Products tested under pulsed condition (10ms pulse width) at nominal drive current where Tsp=25°C.
• Bridgelux maintains a ±7.5% tolerance on luminous flux measurements, ±0.1V tolerance on forward voltage measurements for the SMD 3838.
• Typical pulsed test performance values are provided as reference only and are not a guarantee of performance.
• The luminous flux (lm) and VF are based on both C1 lighting up simultaneously in parallel.
• The luminous flux (lm) and VF are based on C1 lighting up illuminate separately.

Performance at Each CCT

Table 3: Tunable White with CRI90

Notes for Table 3:

• Products tested at 0.5W for Tsp = 55°C, tested at 1W for Tsp = 85°C
• The performance tested when Tj=Tsp=25°C.

Absolute Maximum Ratings

Table 4: Maximum Ratings

Notes for Table 4:

• Bridgelux recommends a maximum duty cycle of 10% and pulse width of 10 ms when operating LED SMD at maximum peak pulsed current specified. Maximum peak pulsed current indicate values where LED SMD can be driven without catastrophic failures.
• Light emitting diodes are not designed to be driven in reverse voltage and will not produce light under this condition. Maximum rating provided for reference only.

Product Bin Definitions

Table 5: MacAdam Ellipse Color Bin Definitions

Notes for Table 5:

• Color binning at Tsp=25°C unless otherwise specified
• Bridgelux maintains a tolerance of ± 0.007 on x and y color coordinates.
• The performance is based on both C1 lighting up simultaneously in parallel.

Product Bin Definitions

Table 6 lists the standard photometric luminous flux bins for SMD 3838 Triple CCT Fgo. Although several bins are outlined, product availability in a particular bin varies by production run and by product performance.

Table 6: Luminous Flux Range Definitions at 120mA, Tsp=25°C

Note for Table 6:

• Bridgelux maintains a tolerance of ± 7.5% on luminous flux measurements.
• The luminous flux (lm) is based on both C1 lighting up simultaneously in parallel.
• No flux bin.

Table 7: Forward Voltage Range Definitions at 120mA, Tsp=25°C

Note for Table 7:

• Bridgelux maintains a tolerance of ± 0.1V on forward voltage measurements.
• No vf bin.

Table 8: Color Bin in combination at 120mA

Note for Table 8:

• The bin combination is as follows:
• Bin GE1 can be used independently.
• Other bin codes used in 1:1 combinations of GE1+GE3. GE2+GE3. GE4+GE7, GE4+GE9. GE5+GE9. GE6+GE7, GE6+GE8
• Different VF Bins cannot be mixed for use.

Performance Curves

Figure 2: Drive Current vs. Voltage (Tsp=25°C)

[Graph showing Drive Current (mA) on the y-axis and Forward Voltage (V) on the x-axis, with a line indicating the relationship.]

Figure 3: Typical Relative Luminous Flux vs. Drive Current (Tsp=25°C)

[Graph showing Relative Luminous Flux (%) on the y-axis and Forward Current (mA) on the x-axis, with separate lines for C1, C2, and C3.]

Note for Figure 3:

• Pulse width modulation (PWM) is recommended for dimming effects.

Performance Curves

Figure 4: Typical Relative Flux vs. Solder Point Temperature

[Graph showing Relative Luminous Flux (%) on the y-axis and Solder Point Temperature (°C) on the x-axis, with separate lines for C1, C2, and C3.]

Performance Curves

Figure 5: Chromaticity Coordinate Group (Color Targeted at Tsp=25°C&55°C&85°C)

[Graph showing Chromaticity Coordinate Group for 0.5W Triple CCT F90 and 1W Triple CCT F90, with different CCTs (1800K to 6500K) plotted at various temperatures (25°C, 55°C, 85°C).]

Typical Radiation Pattern

Figure 6: Typical Spatial Radiation Pattern at 120mA, Tsp=25°C

[Graph showing Relative Intensity on the y-axis and Angular Displacement (°) on the x-axis, with curves for C1, C2, and C3.]

Notes for Figure 6:

• C1 typical viewing angle is 114°. C2 typical viewing angle is 116°. C3 typical viewing angle is 122°.
• The viewing angle is defined as the off axis angle from the centerline where Iv is ½ of the peak value.

Figure 7: Typical Polar Radiation Pattern at 120mA, Tsp=25°C

[Diagram showing a polar radiation pattern with Relative Luminosity on the radial axis and Radiation Angle on the angular axis, with curves for C1, C2, and C3.]

Typical Color Spectrum

Figure 8: Typical Color Spectrum

[Graph showing Relative Radiant Power (%) on the y-axis and Wavelength (nm) on the x-axis, with curves for C1, C2, and C3.]

Notes for Figure 8:

• Color spectra measured at nominal current for Tsp = 25°C

Figure 9: Tunable White Spectrum

[Graphs showing tunable white spectrum for 0.5W Triple F90 and 1W Triple F90, with Intensity (W/nm) on the y-axis and Wavelength (nm) on the x-axis, showing different CCTs.]

Mechanical Dimensions

Figure 10: Drawing for SMD 3838

[Diagram showing mechanical dimensions of the SMD 3838 package, including top view, side view, and bottom view with dimensions and pin assignments C1, C2, C3.]

Notes for Figure 10:

• Drawings are not to scale.
• Drawing dimensions are in millimeters.
• Unless otherwise specified, tolerances are ± 0.10mm.
• The optical center of the LED emitter is nominally defined by the mechanical center of the emitter. The light emitting surface (LES) is centered on the mechanical center of the LED emitter to a tolerance of ± 0.2 mm

Recommended PCB Soldering Pad Pattern

[Diagrams showing recommended PCB soldering pad pattern for copper and solder mask layers.]

Please try to enlarge the copper foil design of the large pad. The copper design shown in red above is for reference only.

Reliability

Table 9: Reliability Test Items and Conditions

Passing Criteria

Notes for Table 9:

• Measurements are performed after allowing the LEDs to return to room temperature
• Tsp: reflow soldering temperature; T: ambient temperature.

Reflowing Characteristics

Figure 11: Reflow Profile

[Diagram illustrating reflow profiles for lead-free assembly, showing temperature on the y-axis and time on the x-axis, with key stages like Preheat Area, Liquidus Temperature, and Peak Temperature indicated.]

Packaging

Figure 12: Emitter Reel Drawings

[Diagrams showing emitter reel dimensions.]

Note for Figure 12:

• Drawings are not to scale. Drawing dimensions are in millimeters.

Figure 13: Emitter Tape Drawings

[Diagrams illustrating emitter tape dimensions and features, including tape width, pitch, and pocket dimensions for A0, B0, K0, P0, P1, P2, D0, D1, E, F, W, T.]

Note for Figure 13:

• Drawings are not to scale. Drawing dimensions are in millimeters.

Packaging

Figure 14: Emitter Reel Packaging Drawings

[Diagrams illustrating the packaging process for Bridgelux SMD 3838 LEDs, showing reels, aluminum moisture-proof bags, and outer boxes with quantities.]

Note for Figure 14:

• Drawings are not to scale.

Design Resources

Please contact your Bridgelux sales representative for assistance.

Precautions

CAUTION: CHEMICAL EXPOSURE HAZARD

Exposure to some chemicals commonly used in luminaire manufacturing and assembly can cause damage to the LED emitter. Please consult Bridgelux Application Note AN51 for additional information.

CAUTION: EYE SAFETY

Eye safety classification for the use of Bridgelux SMD LED emitter is in accordance with IEC specification EN62471: Photobiological Safety of Lamps and Lamp Systems. SMD LED emitters are classified as Risk Group 1 when operated at or below the maximum drive current. Please use appropriate precautions. It is important that employees working with LEDs are trained to use them safely.

CAUTION: RISK OF BURN

Do not touch the SMD LED emitter during operation. Allow the emitter to cool for a sufficient period of time before handling. The SMD LED emitter may reach elevated temperatures such that could burn skin when touched.

CAUTION

CONTACT WITH LIGHT EMITTING SURFACE (LES)

Avoid any contact with the LES. Do not touch the LES of the emitter or apply stress to the LES (yellow phosphor resin area). Contact may cause damage to the emitter.

Optics and reflectors must not be mounted in contact with the LES (yellow phosphor resin area).

Disclaimers

MINOR PRODUCT CHANGE POLICY

The rigorous qualification testing on products offered by Bridgelux provides performance assurance. Slight cosmetic changes that do not affect form, fit, or function may occur as Bridgelux continues product optimization.

STANDARD TEST CONDITIONS

Unless otherwise stated, LED emitter testing is performed at the nominal drive current.

About Bridgelux: Bridging Light and Life™

At Bridgelux, we help companies, industries and people experience the power and possibility of light. Since 2002, we've designed LED solutions that are high performing, energy efficient, cost effective and easy to integrate. Our focus is on light's impact on human behavior, delivering products that create better environments, experiences and returns-both experiential and financial. And our patented technology drives new platforms for commercial and industrial luminaires.

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