1. 目的 規(guī)范產(chǎn)品的PCB焊盤(pán)設(shè)計(jì)工藝, 規(guī)定PCB焊盤(pán)設(shè)計(jì)工藝的相關(guān)參數(shù),使得PCB 的設(shè)計(jì)滿足可生產(chǎn)性、可測(cè)試性、安規(guī)、EMC、EMI 等的技術(shù)規(guī)范要求,在產(chǎn)品設(shè)計(jì)過(guò)程中構(gòu)建產(chǎn)品的工藝、技術(shù)、質(zhì)量、成本優(yōu)勢(shì)。 2. 適用范圍本規(guī)范適用于空調(diào)類(lèi)電子產(chǎn)品的PCB 工藝設(shè)計(jì),運(yùn)用于但不限于PCB 的設(shè)計(jì)、PCB 批產(chǎn)工藝審查、單板工藝審查等活動(dòng)。本規(guī)范之前的相關(guān)標(biāo)準(zhǔn)、規(guī)范的內(nèi)容如與本規(guī)范的規(guī)定相抵觸的,以本規(guī)范為準(zhǔn)3.引用/參考標(biāo)準(zhǔn)或資料TS-S0902010001 <〈信息技術(shù)設(shè)備PCB 安規(guī)設(shè)計(jì)規(guī)范〉>TS—SOE0199001 <〈電子設(shè)備的強(qiáng)迫風(fēng)冷熱設(shè)計(jì)規(guī)范〉〉TS—SOE0199002 〈<電子設(shè)備的自然冷卻熱設(shè)計(jì)規(guī)范>>IEC60194 〈<印制板設(shè)計(jì)、制造與組裝術(shù)語(yǔ)與定義>> (Printed Circuit Board designmanufacture and assembly-terms and definitions)IPC—A-600F 〈<印制板的驗(yàn)收條件>〉 (Acceptably of printed board)IEC609504。規(guī)范內(nèi)容4。1焊盤(pán)的定義 通孔焊盤(pán)的外層形狀通常為圓形、方形或橢圓形。具體尺寸定義詳述如下,名詞定義如圖所示。1) 孔徑尺寸:若實(shí)物管腳為圓形:孔徑尺寸(直徑)=實(shí)際管腳直徑+0。20∽0。30mm(8。0∽12。0MIL)左右;若實(shí)物管腳為方形或矩形:孔徑尺寸(直徑)=實(shí)際管腳對(duì)角線的尺寸+0.10∽0。20mm(4.0∽8。0MIL)左右。2) 焊盤(pán)尺寸: 常規(guī)焊盤(pán)尺寸=孔徑尺寸(直徑)+0.50mm(20.0 MIL)左右.…………
標(biāo)簽: PCB
上傳時(shí)間: 2022-05-24
上傳用戶(hù):canderile
說(shuō)明: 基于單片機(jī)的rc522模塊的門(mén)禁系統(tǒng)源碼以及原理圖(The source code and schematic diagram of the entrance guard system of rc522 module based on single chip microcomputer)
標(biāo)簽: 門(mén)禁系統(tǒng)
上傳時(shí)間: 2022-06-06
上傳用戶(hù):ttalli
AR0231AT7C00XUEA0-DRBR(RGB濾光)安森美半導(dǎo)體推出采用突破性減少LED閃爍 (LFM)技術(shù)的新的230萬(wàn)像素CMOS圖像傳感器樣品AR0231AT,為汽車(chē)先進(jìn)駕駛輔助系統(tǒng)(ADAS)應(yīng)用確立了一個(gè)新基準(zhǔn)。新器件能捕獲1080p高動(dòng)態(tài)范圍(HDR)視頻,還具備支持汽車(chē)安全完整性等級(jí)B(ASIL B)的特性。LFM技術(shù)(專(zhuān)利申請(qǐng)中)消除交通信號(hào)燈和汽車(chē)LED照明的高頻LED閃爍,令交通信號(hào)閱讀算法能于所有光照條件下工作。AR0231AT具有1/2.7英寸(6.82 mm)光學(xué)格式和1928(水平) x 1208(垂直)有源像素陣列。它采用最新的3.0微米背照式(BSI)像素及安森美半導(dǎo)體的DR-Pix?技術(shù),提供雙轉(zhuǎn)換增益以在所有光照條件下提升性能。它以線性、HDR或LFM模式捕獲圖像,并提供模式間的幀到幀情境切換。 AR0231AT提供達(dá)4重曝光的HDR,以出色的噪聲性能捕獲超過(guò)120dB的動(dòng)態(tài)范圍。AR0231AT能同步支持多個(gè)攝相機(jī),以易于在汽車(chē)應(yīng)用中實(shí)現(xiàn)多個(gè)傳感器節(jié)點(diǎn),和通過(guò)一個(gè)簡(jiǎn)單的雙線串行接口實(shí)現(xiàn)用戶(hù)可編程性。它還有多個(gè)數(shù)據(jù)接口,包括MIPI(移動(dòng)產(chǎn)業(yè)處理器接口)、并行和HiSPi(高速串行像素接口)。其它關(guān)鍵特性還包括可選自動(dòng)化或用戶(hù)控制的黑電平控制,支持?jǐn)U頻時(shí)鐘輸入和提供多色濾波陣列選擇。封裝和現(xiàn)狀:AR0231AT采用11 mm x 10 mm iBGA-121封裝,現(xiàn)提供工程樣品。工作溫度范圍為-40℃至105℃(環(huán)境溫度),將完全通過(guò)AEC-Q100認(rèn)證。
標(biāo)簽: 圖像傳感器
上傳時(shí)間: 2022-06-27
上傳用戶(hù):XuVshu
Overview The MT7628 router-on-a-chip includes an 802.11n MAC and baseband,a 2.4 GHz radio and FEM,a 575/580MHz MIPS? 24K% CPU core,a 5-port 10/100 fast ethernet switch. The MT7628 includes everything needed to build an AP router from a single chip. The embedded high performance CPU can process advanced applications effortlessly, such as routing, security and VolP. The MT7628 also includes a selection of interfaces to support a variety of applications, such as a USB port for accessing external storage.Features· Embedded MIPS24KEc(575/580 MHz) with 64KBl-Cache and 32 KB D-Cache·2T2R 2.4 GHz with 300 Mbps PHY data rate· Legacy 802.11b/g and HT 802.11n modes·20/40 MHz channel bandwidth· Reverse Data Grant(RDG)· Maximal Ratio Combining(MRC)· Space Time Block Coding(STBC)· MCM 8 Mbytes DDR1 KGD(MT7628KN)
標(biāo)簽: mt7628
上傳時(shí)間: 2022-07-18
上傳用戶(hù):
See Appendix B for a description of the programs included on this companion disk. RESOURCE.WRI identifies other books and resources for Internet programming. WEBHELP.HLP contains an introduction to the World Wide Web. TCPMAN.HLP provides detailed instructions to help you use the Trumpet Winsock included on this disk. Use the Program Manager s File menu Run option to execute the SETUP.EXE program found on this disk. SETUP.EXE will install the programs on your hard drive and create an Internet Programming group window. Internet編程技術(shù) [配套程序] [涉及平臺(tái)] VC [作者] void [文件大小] 1032K
標(biāo)簽: description companion Appendix RESOURCE
上傳時(shí)間: 2013-12-04
上傳用戶(hù):asasasas
b tree how to operate on b tr
上傳時(shí)間: 2014-01-20
上傳用戶(hù):開(kāi)懷常笑
PCB可制造性設(shè)計(jì)探討 Discuss on Manufacturable P C B Design PCB可制造性設(shè)計(jì)探討
標(biāo)簽: Manufacturable PCB Discuss Design
上傳時(shí)間: 2015-08-07
上傳用戶(hù):dave520l
Bing is a point-to-point bandwidth measurement tool (hence the b ), based on ping. Bing determines the real (raw, as opposed to available or average) throughput on a link by measuring ICMP echo requests roundtrip times for different packet sizes for each end of the link
標(biāo)簽: Bing point-to-point measurement determines
上傳時(shí)間: 2015-09-15
上傳用戶(hù):lgnf
This I develops based on the B/S structure student managementsystem management system, hoped brings a help to the novice
標(biāo)簽: managementsystem management structure develops
上傳時(shí)間: 2014-01-07
上傳用戶(hù):釣鰲牧馬
國(guó)際會(huì)議上的關(guān)于人耳圖像識(shí)別的論文:Multi-view Ear Recognition Based on B-Spline Pose Manifold Construction
標(biāo)簽: Construction Recognition Multi-view B-Spline
上傳時(shí)間: 2013-12-17
上傳用戶(hù):磊子226
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