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for the Nichia 123 Series LEDs
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NFSW123G , NFSx123D , NFSx123F and NxSx123x refer to Nichia part numbers. These Nichia part
numbers within this document are merely Nichia's part numbers for those Nichia products and are not
related nor bear resemblance to any other company's product that might bear a trademark.
Light Emitting Diode
Application Note
Assembly Precautions
Table of contents
・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ 3
Evaluation of the Effect of Solder Volume
・ ・ ・ ・ ・ ・ ・ ・ 2
・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ 9
・ ・ ・ ・ ・ ・ ・ ・ ・ ・10-13
This document contains tentative information, Nichia may change the contents without notice.
1/14
・ ・ ・ ・ ・ 4
・ ・ ・ 5-9
SP-QR-C2-220853-1
Feb. 2, 2024
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Summary of Contents for Nichia 123 Series
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Page 1: Table Of Contents
NFSW123G , NFSx123D , NFSx123F and NxSx123x refer to Nichia part numbers. These Nichia part numbers within this document are merely Nichia’s part numbers for those Nichia products and are not related nor bear resemblance to any other company’s product that might bear a trademark. -
Page 2: Led Outline Dimensions/Tape And Reel Dimensions
Reel Size: 4,000 LEDs (Unit: mm, Tolerance: ±0.2mm) (Unit: mm) The weight value provided in Table 1 is the weight for the NFSW123G LED. This document contains tentative information, Nichia may change the contents without notice. SP-QR-C2-220853-1 2/14 Light Emitting Diode... -
Page 3: Handling Precautions
Figure 1. Correct/Incorrect Examples proof Aluminum Bag MSL2: Within 1 Year of Handling with Tweezers Baking 65±5°C MSL3: ≥24 Hours This document contains tentative information, Nichia may change the contents without notice. SP-QR-C2-220853-1 3/14 Light Emitting Diode Feb. 2, 2024... -
Page 4: Design Recommendations For Optimal Amount Of Solder
The recommended soldering pad pattern, metal solder stencil aperture, and thickness of the metal solder stencil provided in Tables 3 and 4 have been determined under Nichia’s conditions: ensure that there are no issues with the chosen assembly conditions prior to use. -
Page 5: Precautions For Setting Up A Pick-And-Place Machine/Nozzle
Imaging-based Automatic recommended to locate the center of See "4-5. Imaging-based Automatic Inspection" on Page 9 for details. Inspection the LED. This document contains tentative information, Nichia may change the contents without notice. SP-QR-C2-220853-1 5/14 Light Emitting Diode Feb. 2, 2024... - Page 6 (Unit: mm) (Unit: mm) Figure 4. Correct/Incorrect Examples for Shapes of the Nozzle and LED Pick-up Positions Figure 3. Emitting Area of the LED This document contains tentative information, Nichia may change the contents without notice. SP-QR-C2-220853-1 6/14 Light Emitting Diode...
- Page 7 LEDs. LED Pick-up Position Feed Speed: Fast Vibration: Large Figure 5. Examples of Recommended/Not Recommended Top Cover Tape Removal Positions This document contains tentative information, Nichia may change the contents without notice. SP-QR-C2-220853-1 7/14 Light Emitting Diode Feb. 2, 2024...
- Page 8 - excessive forces may be applied to the LED during placement and it may cause the LED to become damaged. Figure 7. Recommended Nozzle Height for Placement Operations (Placement Depth) This document contains tentative information, Nichia may change the contents without notice. SP-QR-C2-220853-1 8/14 Light Emitting Diode Feb.
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Page 9: Precautions When Reflow Soldering
Assembly Precautions for the Nichia 123 Series LEDs 4-5. Imaging-based Automatic Inspection 1. Nichia recommends using the electrodes as a reference to locate the center of the LED. 2. If the imaging device has trouble detecting/recognizing the electrodes, adjust the settings (i.e. the brightness of the light, etc.) of the pick- Electrode Location and-place machine. - Page 10 6. Evaluation of the Effect of Solder Volume 6-1. Evaluation Method/Conditions Nichia evaluated the effect of solder volume for reflow-soldering the LEDs using different solder volumes including the recommended amount provided in Table 3 in Section 3. For details, see Table 6.
- Page 11 0.65 0.65 0.65 0.65 Metal Solder Stencil Aperture Appearance of the Reflow- soldered Evaluation The soldering conditions were good. Result This document contains tentative information, Nichia may change the contents without notice. SP-QR-C2-220853-1 11/14 Light Emitting Diode Feb. 2, 2024...
- Page 12 6-3. Placement Accuracy in x and y Directions Nichia evaluated the placement accuracy of the reflow-soldered LEDs in the x and y directions from the center of the soldering pad pattern using different solder volumes. The amount of the deviation from the center of the soldering pad pattern in the x and y directions are described as ∆x and ∆y respectively.
- Page 13 Assembly Precautions for the Nichia 123 Series LEDs 6-5. Placement Accuracy in the z Direction (Tilt) Nichia evaluated the placement accuracy of the reflow-soldered LEDs in the z-x and z-y directions; the amount of the deviation is described as ∆z. ∆z ∆z...
- Page 14 • 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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