Dimensional and structural stability of gamma irradiated stacked die quad flat no leads (QFN)

The physical properties and structural stability of the Quad Flat No-Leads (QFN) package with different gamma radiation doses have been investigated. The packages were irradiated with Co-60 gamma radiation with varying doses of 5 Gy, 50 Gy, 500 Gy, 5 kGy and 50 kGy with operating dose of 2.54 kGy/h...

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Main Authors:	Siew, Peng Foo, Wan Yusmawati Wan Tusoff, Azman Jalar
Format:	Article
Language:	English
Published:	Universiti Kebangsaan Malaysia 2014
Online Access:	http://journalarticle.ukm.my/7170/ http://journalarticle.ukm.my/7170/ http://journalarticle.ukm.my/7170/1/03_Siew_Peng_Foo.pdf

id	ukm-7170
recordtype	eprints
spelling	ukm-71702016-12-14T06:43:17Z http://journalarticle.ukm.my/7170/ Dimensional and structural stability of gamma irradiated stacked die quad flat no leads (QFN) Siew, Peng Foo Wan Yusmawati Wan Tusoff, Azman Jalar, The physical properties and structural stability of the Quad Flat No-Leads (QFN) package with different gamma radiation doses have been investigated. The packages were irradiated with Co-60 gamma radiation with varying doses of 5 Gy, 50 Gy, 500 Gy, 5 kGy and 50 kGy with operating dose of 2.54 kGy/h at room temperature. The infinite focus microscope (IFM) was used to measure the dimensional change and slanting/warpage behaviour, while the 3D CT Scan X-ray machine was used to determine the occurrence of deflection on a wire in package due to exposure. It is believed that radiation effect on ceramic filler in the epoxy mold compound (EMC) plays an important role to induce the defects and resulted in swelling of the package. The slanting/warpage behaviour is believed to be caused by the swelling behaviour of ceramic filler and further induced structural stability. The induced stress on the EMC structural after the dimensional change and slanting/warpage failure leads to the occurrence of wire sweep. The finding suggests that defect production in swelled ceramic filler leads to the occurrence of dimensional and structure instability. Universiti Kebangsaan Malaysia 2014-06 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/7170/1/03_Siew_Peng_Foo.pdf Siew, Peng Foo and Wan Yusmawati Wan Tusoff, and Azman Jalar, (2014) Dimensional and structural stability of gamma irradiated stacked die quad flat no leads (QFN). Sains Malaysiana, 43 (6). pp. 827-832. ISSN 0126-6039 http://www.ukm.my/jsm/
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
description	The physical properties and structural stability of the Quad Flat No-Leads (QFN) package with different gamma radiation doses have been investigated. The packages were irradiated with Co-60 gamma radiation with varying doses of 5 Gy, 50 Gy, 500 Gy, 5 kGy and 50 kGy with operating dose of 2.54 kGy/h at room temperature. The infinite focus microscope (IFM) was used to measure the dimensional change and slanting/warpage behaviour, while the 3D CT Scan X-ray machine was used to determine the occurrence of deflection on a wire in package due to exposure. It is believed that radiation effect on ceramic filler in the epoxy mold compound (EMC) plays an important role to induce the defects and resulted in swelling of the package. The slanting/warpage behaviour is believed to be caused by the swelling behaviour of ceramic filler and further induced structural stability. The induced stress on the EMC structural after the dimensional change and slanting/warpage failure leads to the occurrence of wire sweep. The finding suggests that defect production in swelled ceramic filler leads to the occurrence of dimensional and structure instability.
format	Article
author	Siew, Peng Foo Wan Yusmawati Wan Tusoff, Azman Jalar,
spellingShingle	Siew, Peng Foo Wan Yusmawati Wan Tusoff, Azman Jalar, Dimensional and structural stability of gamma irradiated stacked die quad flat no leads (QFN)
author_facet	Siew, Peng Foo Wan Yusmawati Wan Tusoff, Azman Jalar,
author_sort	Siew, Peng Foo
title	Dimensional and structural stability of gamma irradiated stacked die quad flat no leads (QFN)
title_short	Dimensional and structural stability of gamma irradiated stacked die quad flat no leads (QFN)
title_full	Dimensional and structural stability of gamma irradiated stacked die quad flat no leads (QFN)
title_fullStr	Dimensional and structural stability of gamma irradiated stacked die quad flat no leads (QFN)
title_full_unstemmed	Dimensional and structural stability of gamma irradiated stacked die quad flat no leads (QFN)
title_sort	dimensional and structural stability of gamma irradiated stacked die quad flat no leads (qfn)
publisher	Universiti Kebangsaan Malaysia
publishDate	2014
url	http://journalarticle.ukm.my/7170/ http://journalarticle.ukm.my/7170/ http://journalarticle.ukm.my/7170/1/03_Siew_Peng_Foo.pdf
first_indexed	2023-09-18T19:48:56Z
last_indexed	2023-09-18T19:48:56Z
_version_	1777406088415543296

Dimensional and structural stability of gamma irradiated stacked die quad flat no leads (QFN)

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