HSML-C400 Data Sheet

Side-Fire Mono-Color Surface-Mount ChipLED

Broadcom

HSML-C400-DS100

7



Control for unfinished reel:

Store unused LEDs in a sealed MBB with desiccant or

desiccator at < 5% RH.



Control of assembled boards:

If the PCB soldered with the LEDs is to be subjected to

other high-temperature processes, store the PCB in a

sealed MBB with desiccant or desiccator at < 5% RH to

ensure that all LEDs have not exceeded their floor life of

672 hours.



Baking is required if the following conditions exist:

– The HIC indicator indicates a change in color for

10% and 5% as stated on the HIC.

– The LEDs are exposed to conditions of > 30°C/60%

RH at any time.

– The LEDs’ floor life exceeded 672 hours.

The recommended baking condition is: 60°C ±5ºC for

20 hours.

Baking should only be done once.

Application Precautions



The drive current of the LED must not exceed the

maximum allowable limit across temperature as stated

in the data sheet. Constant current driving is

recommended to ensure consistent performance.



LEDs exhibit slightly different characteristics at different

drive currents that might result in larger performance

variations (that is, intensity, wavelength, and forward

voltage). Set the application current as close as

possible to the test current to minimize these variations.



The LED is not intended for reverse bias. Use other

appropriate components for such purposes. When

driving the LED in matrix form, ensure that the reverse

bias voltage does not exceed the allowable limit of the

LED.



Avoid rapid change in ambient temperature, especially

in high-humidity environments, because this will cause

condensation on the LED.



If the LED is intended to be used in harsh

environments, protect the LED against damages

caused by rain water, dust, oil, corrosive gases,

external mechanical stress, and so on.

Eye Safety and Precautions

LEDs may pose optical hazards when in operation. Do not

look directly at operating LEDs as it may be harmful to the

eyes. For safety reasons, use appropriate shielding or

personnel protection equipment.