參數(shù)資料
型號(hào)： PCA9515AD
廠(chǎng)商： NXP Semiconductors N.V.
元件分類(lèi)： I2C/I2S
英文描述： I2C-bus repeater
封裝： PCA9515AD<SOT96-1 (SO8)|<<http://www.nxp.com/packages/SOT96-1.html<1<week 5, 2005,;PCA9515AD<SOT96-1 (SO8)|<<http://www.nxp.com/packages/SOT96-1.html<1<week 5, 2005
文件頁(yè)數(shù)： 13/18頁(yè)
文件大?。?/td> 104K
代理商： PCA9515AD
PCA9515A_4
NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 04 — 11 April 2008
13 of 18
NXP Semiconductors
PCA9515A
I
2
C-bus repeater
13. Soldering of SMD packages
This text provides a very brief insight into a complex technology. A more in-depth account
of soldering ICs can be found in Application Note AN10365 “Surface mount reflow
soldering description”
13.1 Introduction to soldering
Soldering is one of the most common methods through which packages are attached to
Printed Circuit Boards (PCBs), to form electrical circuits. The soldered joint provides both
the mechanical and the electrical connection. There is no single soldering method that is
ideal for all IC packages. Wave soldering is often preferred when through-hole and
Surface Mount Devices (SMDs) are mixed on one printed wiring board; however, it is not
suitable for fine pitch SMDs. Reflow soldering is ideal for the small pitches and high
densities that come with increased miniaturization.
13.2 Wave and reflow soldering
Wave soldering is a joining technology in which the joints are made by solder coming from
a standing wave of liquid solder. The wave soldering process is suitable for the following:
Through-hole components
Leaded or leadless SMDs, which are glued to the surface of the printed circuit board
Not all SMDs can be wave soldered. Packages with solder balls, and some leadless
packages which have solder lands underneath the body, cannot be wave soldered. Also,
leaded SMDs with leads having a pitch smaller than ~0.6 mm cannot be wave soldered,
due to an increased probability of bridging.
The reflow soldering process involves applying solder paste to a board, followed by
component placement and exposure to a temperature profile. Leaded packages,
packages with solder balls, and leadless packages are all reflow solderable.
Key characteristics in both wave and reflow soldering are:
Board specifications, including the board finish, solder masks and vias
Package footprints, including solder thieves and orientation
The moisture sensitivity level of the packages
Package placement
Inspection and repair
Lead-free soldering versus SnPb soldering
13.3 Wave soldering
Key characteristics in wave soldering are:
Process issues, such as application of adhesive and flux, clinching of leads, board
transport, the solder wave parameters, and the time during which components are
exposed to the wave
Solder bath specifications, including temperature and impurities
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCA9515AD,112 功能描述:接口-信號(hào)緩沖器、中繼器 I2C BUS REPEATER RoHS:否 制造商:Texas Instruments 工作電源電壓: 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VSSOP-8 封裝:Reel
PCA9515AD,118 功能描述:接口-信號(hào)緩沖器、中繼器 I2C BUS REPEATER RoHS:否 制造商:Texas Instruments 工作電源電壓: 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VSSOP-8 封裝:Reel
PCA9515AD,118-CUT TAPE 制造商:NXP 功能描述:PCA9515A Series 3.6 V 2-Channel Bidirectional Buffer I2C-bus repeater - SOIC - 8
PCA9515AD 制造商:Texas Instruments 功能描述:1WO-CHANNEL BIDIRECTIONAL ((NW))
PCA9515AD/G,118 制造商:NXP Semiconductors 功能描述:Tape & Reel
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