Light Emitting Diode
This document contains tentative information, Nichia may change the contents without notice.
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SP-QR-C2-220184-1
Jun. 8, 2022
Assembly Precautions for the Nichia 193F Series LEDs
Caution: Do not touch the
prohibited area.
Suggestion: Grab/hold the LEDs with
tweezers by the package.
2.1 Prohibited area
Do not touch the prohibited area shown in Figure 1. This may cause the LED malfunction (e.g. the LED not to
illuminate).
2.2 Handling with bare hands
Do not handle the LEDs with bare hands:
- this may contaminate the LED surface and have an effect on the optical characteristics,
- this may cause the LED to deform or to be damaged causing a catastrophic failure (i.e. the LED not to
illuminate),
- the electrodes and/or the die heatsink may cause injuries when the LED is handled with bare hands.
2.3 Handling with tweezers
Ensure that when handling the LEDs with tweezers, grab/hold the LEDs by the package (i.e. the black part) and
ensure that excessive force is not applied to the LED. Otherwise, it may cause damage to the LED (e.g. cut,
scratch, chip, crack, etc.) and have an effect on the optical characteristics and/or the reliability. See Figure 2.
2.4 ESD Precautions
The LEDs are sensitive to transient excessive voltages (e.g. ESD, lightning surge). If this excessive voltage
occurs in the circuit, it may cause the LED to be damaged causing issues (e.g. the LED to become dimmer or
not to illuminate [i.e. catastrophic failure]). When handling the LEDs, ensure that necessary measures have
been taken to protect them from transient excess voltages.
2.5 Stacking assembled PCBs together
Do not stack assembled PCBs together. Otherwise, it may cause damage to the LED (e.g. cut, scratch, chip,
crack, etc.) and have an effect on the optical characteristics and/or the reliability.
2.6 Storage
The storage/packaging requirements for the Nichia 193F Series LEDs are comparable to JEDEC Moisture
Sensitivity Level (MSL) 2 or equivalent. Nichia used IPC/JEDEC STD-020 as a reference to rate the MSL of the
LEDs. Table 6 shows the required storage conditions for the LEDs.
Conditions
Temperature
Humidity
Time
Storage
Before Opening Aluminum Bag
≤30
℃
≤90%RH
Within 1 Year from Delivery Date
After Opening Aluminum Bag
≤30
℃
≤70%RH
Within 1 Year
Figure 2. Correct/Incorrect Examples
of Handling with Tweezers
Figure 1. Prohibited area
Prohibited
area
2. Handling Precautions
Table 6. Storage Conditions
Correct
Incorrect
