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SMTnet Express, August 31, 2017, Subscribers: 30,770, Companies: 10,706, Users: 23,739

Technical Library

NSOP Reduction for QFN RFIC Packages

Mumtaz Y. Bora; Peregrine Semiconductor

Wire bonded packages using conventional copper leadframe have been used in industry for quite some time. The growth of portable and wireless products is driving the miniaturization of packages resulting in the development of many types of thin form factor packages and cost effective assembly processes. Proper optimization of wire bond parameters and machine settings are essential for good yields.

Wire bond process can generate a variety of defects such as lifted bond, cracked metallization, poor intermetallic etc. NSOP - non-stick on pad is a defect in wire bonding which can affect front end assembly yields. In this condition, the imprint of the bond is left on the bond pad without the wire being attached. NSOP failures are costly as the entire device is rejected if there is one such failure on any bond pad. The paper presents some of the failure modes observed and the efforts to address NSOP reduction

Forum search results for related keywords: QFN, wire bonding.

SMT / PCB Products




SMTAI Booth # 407

Coating Equipment

GPD Global

SMTAI Booth # 216



SMTAI Booth # 224


Nordson Asymtek

SMTAI Booth # 515

Selective Soldering




SMTAI Booth # 1015

Hand Assembly

Virtual Industries

SMTAI Booth # 235




SMTAI Booth # 215

Cleaning Agents


SMTAI Booth # 615






SMTAI Booth # 616

Solder Paste Stencils

BEST, Inc.

Wave Soldering


SMTAI Booth # 123

SMT / PCB Equipment Auctions

Complete Closure of
115,000 SF Facility

Universal, YesTech, MPM, Terradyne...

September 19 - 20 | X-Line

Electronic Test & Measurement Equipment, ATE & Inspection Tools

Keysight, Anritsu, Rohde & Schwarz, Tektronix...

September 12 - 14 | EquipNet

Electronic Equipment Mart

Teradyne Test Station 87i

Test Equipment

Baja Bid

MPM UP 2000 HiE

Screen Printing Equipment

AdoptSMT Europe GmbH

PCB Conveyors


JMW Enterprises

Koh Young KY-3030 VAL 3D SPI

Inspection Equipment

Capital Equipment Exchange

Aqueous Technologies Stencil Washer ZDO

Cleaning Equipment & Supplies

IBE SMT Equipment

Universal Instruments Genesis GC-60

Pick and Place Equipment/Feeders

X-Line Asset Management

Events Calendar

SMTA International Conference & Exhibition | September 19 - 20 | SMTA

IPC & WHMA Wire Harness Manufacturing Conference | October 3 | IPC

TPCA Show | October 25 - 27 | Taiwan Printed Circuit Association (TPCA)

Training Courses

IPC Training & Certification Courses

Soldering & PCB Rework Courses

PCB Cleaning Webinar Series | ZESTRON Corporation

Career Center

Manufacturing Engineering Manager

Eden Prairie, MN

Logic PD, Inc.


Dorval (Montreal), Canada

Cancino Technologies Corporation

Senior Design Engineer

Murphy, NC

Aegis Power Systems

Industry Associations Events


SMTA - Surface Mount Technology Association is a non-profit international association of companies and individuals (totalling 4,000) involved in all aspects of advanced electronics assembly, surface mount and related technologies.

Membership Info | SMTA Certification | Bookstore | Upcoming Events


IPC - Association Connecting Electronics Industries is a US-based trade association dedicated to the competitive excellence and financial success of its nearly 2,600 member companies which represent all facets of the electronic interconnection industry, including design, printed wiring board manufacturing and electronics assembly.

Membership Info | Training & Certification | Online Store | Upcoming Events

Technical Editor - Davef (submit your technical articles)

Newsletter Editor - Anna Girouard, 98 Elm Street, Portland, Maine 04101 USA, Tel.207-780-0887.


Used PCB Assembly Equipment - CE Exchange

Software for PCB Manufacturing - Unisoft

Quality Pre-Owned SMT Eequipment - Robo-Tek

QWIKTRAY - custom component handling matrix tray - Count on Tools

Experience the Blackfox Difference - Premier IPC Training & Certification Center

PCB Cleaning products - Zestron

Why Use Plasma Treatment Prior To Conformal Coating. Download the 'The Effects of Plasma Treatment Prior to Conformal Coating' White Paper.

Speedprint SP700avi inline SMT screen printer

Fully automatic selective soldering stations - 1 Click SMT - Inline with multiple modules, or standalone for cost effective soldering solutions. - Rework Tools

Fluid DISPENSING pumps for integration into your system - GPD Global

HELLER - Choose an Oven for Your Reflow Needs

KIC - Making Reflow Ovens Smarter

MIRTEC MV 6 OMNI High-Speed / High-Performance 3D AOI

Used SMT Equipment - IBE

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IPC Training & Certification - Blackfox

Voidless Reflow Soldering