Cree XLamp MH Series Soldering & Handling Download Page 1 | Manualshive

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SOLDERING & HANDLING

Cree LED / 4400 Silicon Drive / Durham, NC 27703 USA / +1.919.313.5330 /

www.cree-led.com

© 2014-2021 Cree LED. The information in this document is subject to change without notice. Cree

®

and the Cree logo are registered trademarks, and

the Cree LED logo is a trademark, of Cree, Inc. XLamp

®

is a registered trademark of Cree LED. Other trademarks, product and company names are

the property of their respective owners and do not imply specific product and/or vendor endorsement, sponsorship or association. This document is

provided for informational purposes only and is not a warranty or a specification. For product specifications, please see the data sheets available at

www.cree-led.com.

CLD-AP193

REV 4

1

XLamp

®

MH Family LED

INTRODUCTION

This application note applies to XLamp

®

MH Family LEDs, which

have order codes in the following format:

MHxxxx-xxxx-xxxxxxxxxxx

This application note explains how XLamp MH Family LEDs and
assemblies containing these LEDs should be handled during
manufacturing. Please read the entire document to understand
how to properly handle XLamp MH Family LEDs.

TABLE OF CONTENTS

MH Family LEDs .................................................2

Circuit Board Preparation & Layouts ................................................5
Case Temperature (T

) Measurement Point ....................................6

Notes on Soldering XLamp

MH Family LEDs ................................7

Moisture Sensitivity ..........................................................................8
Low Temperature Operation .............................................................8
XLamp

MH Family LED Reflow Soldering Characteristics

Chemicals & Conformal Coatings ................................................. 10
Assembly Storage & Handling ....................................................... 11
Tape and Reel ................................................................................. 12
Packaging & Labels ....................................................................... 14

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Summary of Contents for XLamp MH Series

Page 1: ...s please see the data sheets available at www cree led com CLD AP193 REV 4 1 XLamp MH Family LED INTRODUCTION This application note applies to XLamp MH Family LEDs which have order codes in the following format MHxxxx xxxx xxxxxxxxxxx This application note explains how XLamp MH Family LEDs and assemblies containing these LEDs should be handled during manufacturing Please read the entire document t...

Page 2: ...Use plastic not metal tweezers to grab XLamp MH Family LEDs at the sides of the substrate i e at the base Do not touch the optical surface with tweezers Do not touch the optical surface with fingers Do not push on the optical surface Cree LED recommends the following at all times when handling XLamp MH Family LEDs or assemblies containing these LEDs Avoid putting mechanical stress on the LED optic...

Page 3: ...d place nozzles coming into contact with silicone covered LED components Cree LED recommends nozzles be constructed of non metallic materials Cree LED and several of Cree LED s customers have had good success using nozzles fabricated from 95a urethane All dimensions in mm Measurement tolerance unless indicated otherwise 0 2 mm MHB x 3 300 300 400 5 000 05 0 1 5 000 05 0 1 7 000 7 000 n1 000 357 2 ...

Page 4: ...MHD E MHD G 7 000 7 000 4 000 1 500 500 n1 000 400 3 300 300 500 SIZE TITLE OF REV SHEET C DRAWING NO DATE DATE DATE CHECK FINAL PROTECTIVE FINISH MATERIAL APPROVED DRAWN BY THIRD ANGLE PROJECTION SCALE A B C D 1 2 3 4 5 6 6 5 4 3 2 1 Phone 919 313 5300 Fax 919 313 5558 4600 Silicon Drive Durham N C 27703 UNAUTHORIZED PERSON WITHOUT THE WRITTEN CONSENT MAY NOT BE COPIED REPRODUCED OR DISCLOSED TO ...

Page 5: ...NS ARE I MILLIMETERS AND AFTER TOLERANCE UNLESS SPE SURFACE FINISH 5 00 R2 26 4 78 80 50 25 80 25 97 4 78 50 50 2 78 4 78 4 78 RECOMMENDED PCB SOLDER PAD RECOMMENDED STENCIL PATTERN HATCHED AREA IS OPENING ALL DIMENSIONS ARE 1 Recommended Stencil Pattern Shaded Area Is Open DATE DATE DATE CHECK FINAL PROTECTIVE FINISH MATERIAL APPROVED DRAWN BY THIRD ANGLE PROJECTION A B C D 2 3 4 5 6 6 5 4 3 2 UN...

Page 6: ...hermal pad that is larger than the XLamp MH Family LED itself In testing Cree LED has found such a solder pad to have insignificant impact on the resulting Ts measurement DATE DATE DATE CHECK FINAL PROTECTIVE FINISH MATERIAL APPROVED DRAWN BY THIRD ANGLE PROJECTION A B C D 6 5 4 3 2 X 5 XXX 25 XX 75 X 1 5 FOR SHEET METAL PARTS ONLY XX 25 XXX 125 X 5 UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN MIL...

Page 7: ...w soldering may be done by a reflow oven or by placing the PCB on a hotplate and following the reflow soldering profile listed on page 9 Do not wave solder XLamp MH Family LEDs Do not hand solder XLamp MH Family LEDs Solder Paste Type Cree LED strongly recommends using no clean solder paste with XLamp MH Family LEDs so that cleaning the PCB after reflow soldering is not required Cree LED uses Kest...

Page 8: ...sistency of the solder bond of several trial PCBs after reflow After shearing selected devices from the circuit board the solder should appear completely re flowed no solder grains evident The solder areas should show minimum evidence of voids on the backside of the package and the PCB Cleaning PCBs After Soldering Cree LED recommends using no clean solder paste so that flux cleaning is not necess...

Page 9: ...r of the solder paste used and therefore it is the lamp or luminaire manufacturer s responsibility to determine applicable soldering requirements Note that this general guideline may not apply to all PCB designs and configurations of reflow soldering equipment Profile Feature Lead Free Solder Average Ramp Up Rate Tsmax to Tp 1 2 C second Preheat Temperature Min Tsmin 120 C Preheat Temperature Max ...

Page 10: ...materials with LEDs You should also consult your regional Cree LED Field Applications Engineer Recommended Chemicals In testing Cree LED has found the following chemicals to be safe to use with XLamp MH Family LEDs Water Isopropyl alcohol IPA Chemicals Tested as Harmful In general subject to the specifics in Cree LED s Chemical Compatibility Application Note Cree LED has found certain chemicals to...

Page 11: ...iation This document is provided for informational purposes only and is not a warranty or a specification For product specifications please see the data sheets available at www cree led com CLD AP193 REV 4 11 ASSEMBLY STORAGE HANDLING Do not stack PCBs or assemblies containing XLamp MH Family LEDs so that anything rests on the LED optical surface PCBs or assemblies containing XLamp MH Family LEDs ...

Page 12: ...Standard Except as noted all dimensions in mm in MHB x TITLE DATE DATE DATE CHECK MATERIAL APPROVED DRAWN BY THIRD ANGLE PROJECTION FOR SHEET METAL PARTS ONLY XX 01 XXX 005 X 5 UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN INCHES AND AFTER FINISH TOLERANCE UNLESS SPECIFIED A B C D 1 2 3 4 5 6 A B C D Phone 919 313 5300 Fax 919 313 5558 4600 Silicon Drive Durham N C 27703 UNAUTHORIZED PERSON WITHOUT...

Page 13: ...RTS ONLY XX 01 XXX 005 X 5 UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN INCHES AND AFTER FINISH TOLERANCE UNLESS SPECIFIED SCALE A B C D 1 2 3 4 5 6 A B C D Phone 919 313 5300 Fax 919 313 5558 4600 Silicon Drive Durham N C 27703 UNAUTHORIZED PERSON WITHOUT THE WRITTEN CONSENT MAY NOT BE COPIED REPRODUCED OR DISCLOSED TO ANY CONFIDENTIAL INFORMATION OF CREE INC THIS PLOT CONTANED WITHIN ARE THE PRO...

Page 14: ...cifications please see the data sheets available at www cree led com CLD AP193 REV 4 14 PACKAGING LABELS The diagrams below show the packaging and labels Cree LED uses to ship XLamp MH Family LEDs XLamp MH Family LEDs are shipped in tape loaded on a reel Each box contains only one reel in a moisture barrier bag Label with Cree Bin Code Qty Lot Vacuum Sealed Moisture Barrier Bag Dessicant inside ba...

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