LL509

Product Description

DuPont LL509 is a co-fired, external solderable gold/platinum conductor material for the DuPont? GreenTape? 9K7 low temperature co-fired ceramic (LTCC) material system. The paste is cadmium and lead-free*.

The composition is designed for use as an attachment pad in Au-based applications where soldered component attach or soldered lead attach properties are required. It has very good solder acceptance and soldered aged adhesion performance when subjected to multiple (6x) post firings at a standard 850o C/ 30 minute firing profile

Product Benefits

When used with the GreenTape? 9K7 LTCC system, DuPont LL509 will offer the following benefits:

? Co-fire processing

? Compatible with DuPont LL507 Au

? Very good soldered adhesion performance ? Cadmium and lead free*

*Cadmium and lead “free” as used herein means that cadmium and lead are not an intentional ingredients in and are not intentionally added to the referenced product. Trace amounts however may be present.

Processing

For detailed recommendations on the use of DuPont LL509 and other members of the GreenTape? 9K7 system, consult this data sheet and the DuPont? GreenTape? LTCC Design Guide. For compatible co-fired and post fired

conductor compositions, consult the GreenTape?

9K7 Product Selector Guide.

Printing

The composition should be thoroughly stirred for 1

to 2 minutes prior to use. This is best achieved by

slowly stirring the paste by hand using a clean, burr-free spatula (flexible plastic or stainless

DuPont LL509

Co-fired, solderable gold/platinum conductor

Technical Data Sheet Apply DuPont LL509 directly to the preconditioned GreenTape? 9K7 green sheets using the appropriate thick film screen printing methods and a vacuum stone or other support structure which uniformly distributes a vacuum to secure the green sheet to the printer’s stage plate. Printing is typically performed using a 325 mesh, stainless steel screen with a 10 to 12

The above table shows the anticipated typical physical and

electrical properties for DuPont LL509 based on specific controlled experiments in our labs and are not intended to

represent the product specifications, details of which are

available upon request.

Typical Properties

Property Value

Viscosity, (Pa.s, 10 rpm, 25o C)1 150 - 275 Solids, (%)2

77.5 - 79.5 Coverage, (cm 2/gram) 80 - 90

Clean-up solvent 1-Propoxy-2-Proponal

Thinner

8250 Line/space resolution, (um, dried) 125 / 125 Dry print thickness, (um) 20 - 25 Fired print thickness, (um) 11 - 15 Resistivity, (mOhms/sq)3

>/= 95 Solder leach resistance, (# dips)5 4 - 5 Soldered initial adhesion, (N)6 >/= 25 Soldered aged adhesion, (N)7

>/= 18

1 Brookfield 2xHAT, SC4-14 / 6R spindle and utility cup 2

1050o C

3 Normalized to 15 um dry thickness

4 3x refires, 63Sn/37Pb solder, 240o C,

5 sec. dip 5 3x refires, 63Sn/37Pb solder, 250o C, 10 sec. dip

6 Initial, 3x refires, 63Sn/37Pb solder, 240o C

7 48 hrs./150o C, 3x refires, 63Sn/37Pb solder, 240o C

Printing should be performed in a clean, well ventilated area. Optimum printing characteristics are generally achieved when the room and paste container temperatures are in the 20 - 23°C range.

Drying

Allow conductor prints to level for 5 to 10 minutes at room temperature and then dry in a well ventilated oven or conveyor dryer for 5 minutes at 100o C. Do not over-dry.

Lamination

Collate and laminate multiple printed conductor green sheets according to the recommended processing parameters detailed in the DuPont? GreenTape? LTCC Design Guide.

Typical lamination parameters are 3000 psi at 70o C for 10 minutes. Lamination pressures may vary slightly based upon part design and the individual tape lot shrinkage factors.

Firing

Fire in a well ventilated conveyor or static furnace. Air flows and extraction rates should be optimized to ensure that oxidizing conditions exist within the muffle and that no exhaust gases enter the room.

GreenTape? 9K7 requires the use of dedicated, specially coated setters in order to prevent parts from sticking during firing.

Consult the DuPont? GreenTape? 9K7 low temperature co-fired ceramic system data sheet and DuPont? GreenTape? LTCC Design Guide for additional details.

For further information regarding firing profiles, furnace recommendations and setter tile choices, please contact your local DuPont? Technical Service Representative.

Storage and Shelf Life

Containers should be stored, tightly sealed, in a clean, stable environment at room temperature (<25°C). Shelf life of material in unopened containers is six months from date of shipment. Some settling of solids may occur and compositions should be thoroughly mixed prior to use.

Safety and Handling

For Safety and Handling information pertaining to this product, read the Material Safety Data Sheet (MSDS).For more information on DuPont LL509 or other DuPont Microcircuit Materials products, please contact your local representative:

Americas

DuPont Microcircuit Materials

14 T.W. Alexander Drive

Research Triangle Park, NC 27709

Tel.: 800-284-3382

Europe

Du Pont (U.K.) Limited

Coldharbour Lane

Bristol BS16 1QD

U.K.

Tel.: 44-117-931-3191

Asia

DuPont Kabushiki Kaisha

Sanno Park Tower, 11-1

Nagata-cho 2-chome

Chiyoda-ku, Tokyo 100-611

Japan

Tel.: 81-3-5521-8650

DuPont Taiwan Ltd

45, Hsing-Pont Road,

Taoyuan, Taiwan 330

Tel.: 886-3-377-3616

DuPont China Holding Co. Ltd

Bldg 11, 399 Keyuan Rd., Zhangji Hi-Tech Park, Pudong New District, Shanghai 201203, China

Tel.: 86-21-6386-6366 ext.2202

DuPont Korea Inc.

3~5th Floor, Asia tower #726,

Yeoksam-dong, Gangnam-gu

Seoul 135-719, Korea

Tel.: 82-10-6385-5399

E. I. DuPont India Private Limited

7th Floor, Tower C, DLF Cyber Greens,

Sector-25A, DLF City, Phase-III,

Gurgaon 122 002 Haryana, India

Tel.: 91-124-4091818

Du Pont Company (Singapore) Pte Ltd

1 HarbourFront Place, #11-01

HarbourFrong Tower One,

Singapore 098633

Tel.: 65-6586-3022

https://www.wendangku.net/doc/a19665559.html,

MCMLL509(10/2009)

Copyright ? 2009 DuPont. All rights reserved. The DuPont Oval, DuPont?, The miracles of science?, Green Tape? and all products or words denoted with ? or ? are registered trademarks or trademarks of E. I. du Pont de Nemours and Company or its affiliates (“DuPont”).

NO PART OF THIS MATERIAL MAY BE REPRODUCED, STORED IN A RETRIEVAL SYSTEM OR TRANSMITTED IN ANY FORM OR BY ANY MEANS ELECTRONIC, MECHANICAL, PHOTOCOPYING, RECORDING OR OTHERWISE WITHOUT THE PRIOR WRITTEN PERMISSION OF DUPONT.

Caution: Do not use in medical applications involving implantation in the human body or contact with internal body fluids or tissue unless the product is provided by DuPont under a formal written contract consistent with the DuPont Policy Regarding Medical Applications of DuPont Materials H-50103-2 (“Medical Applications Policy”) and which expressly acknowledges the contemplated use. For additional information, please request a copy of DuPont Medical Caution Statement H-50102-2 and the DuPont Medical Applications Policy.

The information provided herein is offered for the product user’s consideration and examination. While the information is based on data believed to be reliable, DuPont makes no warranties, expressed or implied as to the data’s accuracy or reliability and assumes no liability arising out of its use. The data shown are the result of DuPont laboratory experiments and are intended to illustrate potential product performance within a given experimental design under specific, controlled laboratory conditions. While the data provided herein falls within anticipated normal range of product properties based on such experiments, it should not be used to establish specification limits or used alone as the basis of design. It is the product user’s responsibility to satisfy itself that the product is suitable for the user’s intended use. Because DuPont neither controls nor can anticipate the many different end-uses and end-use and processing conditions under which this information and/or the product described herein may be used, DuPont does not guarantee the usefulness of the information or the suitability of its products in any given application. Users should conduct their own tests to determine the appropriateness of the products for their particular purpose.

The product user must decide what measures are necessary to safely use the product, either alone or in combination with other products, also taking into consideration the conditions of its facilities, processes, operations, and its environmental, health and safety compliance obligations under any applicable laws.

This information may be subject to revision as new knowledge and experience become available. This publication is not to be taken as a license to operate under, or recommendation to infringe any patent.