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參數(shù)資料
| 型號： | SA58643 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Single-Pole Double-Throw (SPDT) switch |
| 中文描述： | 單刀雙擲（SPDT）開關(guān) |
| 文件頁數(shù)： | 12/16頁 |
| 文件大?。?/td> | 153K |
| 代理商： | SA58643 |
SA58643_1
NXP B.V. 2006. All rights reserved.
Product data sheet
Rev. 01 — 20 November 2006
12 of 16
NXP Semiconductors
SA58643
Single-Pole Double-Throw (SPDT) switch
15. Soldering
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”
15.1 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.
15.2 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 PbSn soldering
15.3 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 |
|---|---|
| SA58643DP | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Single-Pole Double-Throw (SPDT) switch |
| SA58643DP,118 | 功能描述:RF 開關(guān) IC SPDT SWITCH RoHS:否 制造商:M/A-COM Technology Solutions 開關(guān)數(shù)量:Single 開關(guān)配置:SPDT 介入損耗:0.6 dB 截止隔離（典型值）:43 dB 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN-16 封裝:Reel |
| SA58646 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:UHF 900 MHz transceiver IC |
| SA58646BD | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:UHF 900 MHz transceiver IC |
| SA58646BD,118 | 功能描述:射頻接收器 UHF/9MHZ TRANSCEIVER RoHS:否 制造商:Skyworks Solutions, Inc. 類型:GPS Receiver 封裝 / 箱體:QFN-24 工作頻率:4.092 MHz 工作電源電壓:3.3 V 封裝:Reel |
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