Cree XLamp MH Series Soldering & Handling
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Cree XLamp MH Series Soldering & Handling

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SOLDERING & HANDLING
XLamp
MH Family LED
®
INTRODUCTION
This application note applies to XLamp
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.
Cree LED / 4400 Silicon Drive / Durham, NC 27703 USA / +1.919.313.5330 /
© 2014-2021 Cree LED. The information in this document is subject to change without notice. Cree
the Cree LED logo is a trademark, of Cree, Inc. XLamp
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.
MH Family LEDs, which
®
®
is a registered trademark of Cree LED. Other trademarks, product and company names are
®

TABLE OF CONTENTS

MH Family LEDs .................................................2
®
Circuit Board Preparation & Layouts ................................................5
) Measurement Point ....................................6
s
Moisture Sensitivity ..........................................................................8
Low Temperature Operation .............................................................8
®
Chemicals & Conformal Coatings ................................................. 10
Assembly Storage & Handling ....................................................... 11
Tape and Reel ................................................................................. 12
Packaging & Labels ....................................................................... 14
and the Cree logo are registered trademarks, and
MH Family LEDs ................................7
®
www.cree-led.com
CLD-AP193
REV 4
1

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Summary of Contents for Cree XLamp MH Series

  • Page 1: Table Of Contents

    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 CLD-AP193 ®...

  • Page 2: Handling Xlamp ® Mh Family Leds

    • Cree LED recommends handling MH Family LEDs wearing clean, lint-free gloves. Whenever possible, Cree LED recommends the use of a pick & place tool to remove XLamp MH Family LEDs from the factory tape and reel packaging. © 2014-2021 Cree LED. The information in this document is subject to change without notice. Cree...
  • Page 3 Pick & Place Nozzle The following diagrams show examples of pick & place tools to remove MH Family LEDs from the factory tape and reel packaging. Cree LED recommends using a spring‑relieved pick and place nozzle with a spring constant of 0.519 lb‑ft (0.704 N‑m). For pick and place...
  • Page 4 SCALE SHEET SURFACE FINISH: 16.000 © 2014-2021 Cree LED. The information in this document is subject to change without notice. Cree and the Cree logo are registered trademarks, and CLD-AP193 ® the Cree LED logo is a trademark, of Cree, Inc. XLamp is a registered trademark of Cree LED.

  • Page 5: Circuit Board Preparation & Layouts

    RECOMMENDED PCB SOLDER PAD THIRD ANGLE PROJECTION ± MATERIAL FOR SHEET METAL PARTS ONLY © 2014-2021 Cree LED. The information in this document is subject to change without notice. Cree and the Cree logo are registered trademarks, and CLD-AP193 ® ±...

  • Page 6: Case Temperature

    This measurement point is shown in the picture below. It is not required to use a solder footprint for the thermal 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.

  • Page 7: Notes On Soldering Xlamp ® Mh Family Leds

    Do not wave solder XLamp MH Family LEDs. Do not hand solder XLamp MH Family LEDs. CORRECT WRONG CORRECT 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 Kester R276 solder paste internally.

  • Page 8: Moisture Sensitivity

    LED. Cree LED recommends verifying that soldered LEDs are not tilted, a situation called tombstoning. As a general guideline, an LED is tilted when the part has a low edge touching the PCB surface and a high edge above the PCB surface.

  • Page 9: Xlamp ® Mh Family Led Reflow Soldering Characteristics

    Note: All temperatures refer to topside of the package, measured on the package body surface. Note: While the high reflow temperatures (above) have been approved, Cree LED’s best practice guideline for reflow is to use as low a temperature as possible during the reflow soldering process for these LEDs.

  • Page 10: Chemicals & Conformal Coatings

    Note, Cree LED has found certain chemicals to be harmful to XLamp MH Family LEDs. Cree LED recommends not using these chemicals anywhere in an LED system containing XLamp MH Family LEDs. The fumes from even small amounts of the chemicals may damage the LEDs.

  • Page 11: Assembly Storage & Handling

    Do not use bubble wrap directly on top of XLamp MH Family LEDs. Force from the bubble wrap can potentially damage the LED. CORRECT CORRECT WRONG © 2014-2021 Cree LED. The information in this document is subject to change without notice. Cree and the Cree logo are registered trademarks, and CLD-AP193 ®...

  • Page 12: Tape And Reel

    MEASURED AT EDGE 60° 60° REVISONS DATE APP'D DESCRIPTION © 2014-2021 Cree LED. The information in this document is subject to change without notice. Cree and the Cree logo are registered trademarks, and CLD-AP193 ® DRAWN BY DATE UNLESS OTHERWISE SPECIFIED the Cree LED logo is a trademark, of Cree, Inc.
  • Page 13 Phone (919) 313-5300 TOLERANCE UNLESS SPECIFIED: Fax (919) 313-5558 ± APPROVED DATE © 2014-2021 Cree LED. The information in this document is subject to change without notice. Cree and the Cree logo are registered trademarks, and CLD-AP193 ® .XXX ± .005 TITLE X°...

  • Page 14: Packaging & Labels

    XLAMP MH FAMILY LED SOLDERING & HANDLING ® 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 Humidity Indicator Dessicant Card (inside bag) (inside bag) in tape loaded on a reel.

This manual is also suitable for:

Xlamp mhd-eXlamp mhd-g

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