HSMA-A10X Просмотр технического описания (PDF) - Broadcom Corporation
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HSMA-A10X Datasheet PDF : 17 Pages
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HSMx-A10x-xxxxx Data Sheet
Handling of Moisture-Sensitive Devices
This product has a Moisture Sensitive Level 2a rating per
JEDEC J-STD-020. Refer to Broadcom Application Note
AN5305, Handling of Moisture Sensitive Surface Mount
Devices for additional details and a review of proper
handling procedures.
Before use:
– An unopened moisture barrier bag (MBB) can be
stored at <40°C/90% RH for 12 months. If the actual
shelf life has exceeded 12 months and the Humidity
Indicator Card (HIC) indicates that baking is not
required, then it is safe to reflow the LEDs per the
original MSL rating.
– Do not open the MBB prior to assembly (for
example, for IQC). If unavoidable, MBB must be
properly resealed with fresh desiccant and HIC. The
exposed duration must be taken in as floor life.
Control after opening the MBB:
– Read the HIC immediately upon opening of MBB.
– Keep the LEDs at <30°/60% RH at all times, and
complete all high temperature-related processes,
including soldering, curing or rework within 672
hours.
Control for unfinished reel:
Store unused LEDs in a sealed MBB with desiccant or a
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
168 hours.
Baking is required if:
– 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 LED's floor life exceeded 168 hours.
The recommended baking condition is: 60±5°C for 20
hours.
Baking can only be done once.
Storage:
The soldering terminals of these Broadcom LEDs are
silver plated. If the LEDs are exposed in ambient
environment for too long, the silver plating might be
oxidized, thus affecting its solderability performance. As
such, keep unused LEDs in a sealed MBB with
desiccant or in a desiccator at <5% RH.
Broadcom
PLCC-2, Surface Mount LED Indicator
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.
Circuit design must cater to the whole range of forward
voltage (VF) of the LEDs to ensure the intended drive
current can always be achieved.
The LED exhibits slightly different characteristics at
different drive currents, which may result in a larger
variation of performance (meaning: 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.
Do not use the LED in the vicinity of material with sulfur
content or in environments of high gaseous sulfur
compounds and corrosive elements. Examples of
material that might contain sulfur are rubber gaskets,
room- temperature vulcanizing (RTV) silicone rubber,
rubber gloves, and so on. Prolonged exposure to such
environments may affect the optical characteristics and
product life.
White LEDs must not be exposed to acidic
environments and must not be used in the vicinity of
any compound that may have acidic outgas, such as,
but not limited to, acrylate adhesive. These
environments have an adverse effect on LED
performance.
This LED is designed to have enhanced gas corrosion
resistance. Its performance has been tested according
to the conditions below:
– IEC 60068-2-43: 25°C/75% RH, H2S 15 ppm, 21
days
– IEC 60068-2-42: 25°C/75% RH, SO2 25 ppm, 21
days
– IEC 60068-2-60: 25°C/75% RH, SO2 200 ppb, NO2
200 ppb, H2S 10 ppb, Cl2 10 ppb, 21 days.
As actual application might not be exactly similar to the
test conditions, do verify that the LED will not be
damaged by prolonged exposure in the intended
environment.
Avoid rapid change in ambient temperature, especially
in high-humidity environments, because they cause
condensation on the LED.
AV02-0198EN
15
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