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The part number NV4L144AR,NV4W144AR,NV4L144AM,NV4W144AM in this document are the part number of our
products, and do not have any relevance or similarity to other companies' products that may have trademark rights.
Light Emitting Diode
Application Note
Assembly Precautions
for the Nichia 144 Series LEDs
Table of contents
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This document contains tentative information, Nichia may change the contents without notice.
1/12
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・ ・ 5-8
SP-QR-C2-210575-1
Jul. 9, 2021
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Summary of Contents for Nichia 144 Series
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Page 1: Table Of Contents
The part number NV4L144AR,NV4W144AR,NV4L144AM,NV4W144AM in this document are the part number of our products, and do not have any relevance or similarity to other companies' products that may have trademark rights. This document contains tentative information, Nichia may change the contents without notice. Light Emitting Diode... -
Page 2: Led Outline Dimensions/Tape Dimensions
Embossed Carrier Tape ±0.1 5.35 [unit: mm] トレーラ部/リーダ部 Trailer and Leader トップカバーテープ Top Cover Tape 保護素子 This document contains tentative information, Nichia may change the contents without notice. Protection Device 保護素子 Light Emitting Diode SP-QR-C2-210575-1 2/12 Protection Device Jul. 9, 2021... -
Page 3: Handling Precautions
Baking The storage/packaging requirements for the Nichia 144 Series LEDs are comparable to JEDEC Moisture Sensitivity Level (MSL) 3 or equivalent. Nichia used IPC/JEDEC STD-020 as a reference to rate the MSL of Figure 2. Example of Improper this LED. If the “After Opening” storage time has been exceeded or any pink silica gel beads are found, Stacking ensure that the LED are baked before use. -
Page 4: Design Recommendations For Optimal Amount Of Solder
[unit：mm] [unit：mm] Table 4. Recommended Solder/Metal Solder Stencil Conditions Recommended Item Condition Solder Stencil Thickness 120 [μm] Solder Paste Sn-3.0Ag-0.5Cu This document contains tentative information, Nichia may change the contents without notice. Light Emitting Diode SP-QR-C2-210575-1 4/12 Jul. 9, 2021... -
Page 5: Precautions For Setting Up A Pick-And-Place Machine/Nozzle
The recommended conditions/specifications above have been determined under the following verification conditions: Pick-and-place machine (modular mounter): - YS100 High-Speed General-Purpose Modular (manufactured by Yamaha Motor Co., Ltd.) This document contains tentative information, Nichia may change the contents without notice. Light Emitting Diode SP-QR-C2-210575-1 5/12 Jul. - Page 6 Incorrect Faster feeding speed = More vibration LED tilts within the tape pocket. Figure 5. Examples of Correct/Incorrect Top Cover Tape Removal Positions This document contains tentative information, Nichia may change the contents without notice. Light Emitting Diode SP-QR-C2-210575-1 6/12...
- Page 7 ☞ If press force is too strong, LED may receive excessive stress which may cause the LED to be damaged. Figure 7. Recommended Nozzle Height for Placement (Placement Depth) This document contains tentative information, Nichia may change the contents without notice. Light Emitting Diode SP-QR-C2-210575-1 7/12...
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Page 8: Precautions When Reflow Soldering
Figure 10. Recommended Reflow Soldering the optical characteristics than if a nitrogen atmosphere is used; Nichia Condition (Lead-free Solder) recommends using a nitrogen reflow atmosphere. This document contains tentative information, Nichia may change the contents without notice. Light Emitting Diode SP-QR-C2-210575-1 8/12... -
Page 9: Evaluation Of The Effect Of Solder Volume
• Solder wettability performance was good enough to light the LED in all conditions. However, solder ball occurrence was increased if solder paste volume (area, thickness) is increased. This document contains tentative information, Nichia may change the contents without notice. Light Emitting Diode... -
Page 10: Evaluation Of Self-Alignment Performance
6. Amount of self-alignment was confirmed from center of the land pattern. ＋ Pad pattern Position ＋ Mounted Position This document contains tentative information, Nichia may change the contents without notice. Light Emitting Diode SP-QR-C2-210575-1 10/12 Jul. 9, 2021... - Page 11 150μm to the proper position that causes misalignment of Stencil Thickness LED. (② θ:+10°) Figure 14. Evaluation Result ※n=24pcs/each condition This document contains tentative information, Nichia may change the contents without notice. Light Emitting Diode SP-QR-C2-210575-1 11/12 Jul. 9, 2021...
- Page 12 • The content of this application note may be changed without any prior or subsequent notice. • Copyrights and all other rights regarding the content of this document are reserved by Nichia or the right holders who have permitted Nichia to use the content. Without prior written consent of Nichia, republication, reproduction, and/or redistribution of the content of this document in any form or by any means, whether in whole or in part, including modifications or derivative works hereof, is strictly prohibited.
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