e-journal

Impact of NaCl Contamination and Climatic Conditions on the Reliability of Printed Circuit Board Assemblies

---

The effect of climatic conditions and ionic contamination on the reliability of printed circuit board assembly has been investigated in terms of leakage current (LC) and electrochemical migration susceptibility. The change in LC as a function of relative humidity (RH) and temperature was measured using single components (size 0805) and surface insulation resistance comb patterns precontaminated with sodium chloride at levels adjacent to levels used in the IPC J-STD-001 standard. The potential
bias of 5–10 V was applied during experiments, and the climatic conditions were in the range 60%–98% RH and 15 ◦C–65 ◦C. The variation of RH at the surface of the test specimens was imposed by 1) increasing the RH of the surrounding air and 2) reducing the temperature of the printed circuit boards using a cooling stage, while maintaining a constant climatic condition in the chamber.
A considerable increase in LC was observed at sodium chloride concentrations above 1.56 μg · cm−2, as the RH on the surface was close to the critical RH for sodium chloride. Prolonged exposure to conditions close to condensation resulted in the formation of tin whiskers and hillocks growing from the component electrodes due to corrosion of the electrodes freeing the whisker growth.
Index Terms—Ionic contamination, leakage current (LC),corrosion, reliability.

---

Ketersediaan

Tidak ada salinan data

Informasi Detail

Judul Seri

IEEE TRANSACTIONS ON DEVICE AND MATERIALS RELIABILITY

No. Panggil

-

Penerbit

New York : IEEE., 2014

Deskripsi Fisik

IEEE TRANSACTIONS ON DEVICE AND MATERIALS RELIABILITY, VOL. 14, NO. 1, MARCH 2014

Bahasa

English

ISBN/ISSN

1530-4388

Klasifikasi

-

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

VOL. 14, NO. 1, MARCH 2014

Subjek

TEKNIK

Info Detail Spesifik

-

Pernyataan Tanggungjawab

Yuli/Agus

Versi lain/terkait

Lampiran Berkas

Komentar

---

Anda harus masuk sebelum memberikan komentar