SMD Resistor Saizi - Yakazara Nhungamiro yePakeji Dimensions, Masimba Mayero & Kusarudza Saizi Yakakodzera
Nhanganyaya kune SMD Resistor Saizi
Saizi dzeSMD resistor dzakakosha pakugadzirwa kwePCB yemazuva ano, zvichikanganisa zvakananga huwandu hwemasekonzi, mashandiro ekupisa, uye kuvimbika kwekugadzira. Gwaro iri rinofukidza saizi dzemapakeji eresistor akajairika (0201, 0402, 0603, 0805, 1206, zvichikwira), saizi dzadzo dzemuviri, kugona kubata simba, uye zvinodiwa zvekusarudza mainjiniya zvinoenzanisa miniaturization nezvinodiwa zvekushanda.
The Standard Resistor Color Code Chart
Iyo resistor color code system inotevera IEC 60062, iyo yepasi rose chiyero chekumaka passive zvikamu. Rudzi rumwe nerumwe rwunoenderana nedhijitari, yakawedzera, uye mune dzimwe nguva, kushivirira kana tembiricha coefficient kukosha.
Standard Package Dimensions uye Power Ratings
| kodhi | Urefu (l) | Upamhi (w) | Urefu (h) | simba | ||||
|---|---|---|---|---|---|---|---|---|
| Imperial | Metric | Inch | mm | Inch | mm | Inch | mm | Watt |
| 0201 | 0603 | 0.024 | 0.6 | 0.012 | 0.3 | 0.01 | 0.25 | 1 / 20 (0.05) |
| 0402 | 1005 | 0.04 | 1.0 | 0.02 | 0.5 | 0.014 | 0.35 | 1 / 16 (0.062) |
| 0603 | 1608 | 0.06 | 1.55 | 0.03 | 0.85 | 0.018 | 0.45 | 1 / 10 (0.10) |
| 0805 | 2012 | 0.08 | 2.0 | 0.05 | 1.2 | 0.018 | 0.45 | 1 / 8 (0.125) |
| 1206 | 3216 | 0.12 | 3.2 | 0.06 | 1.6 | 0.022 | 0.55 | 1 / 4 (0.25) |
| 1210 | 3225 | 0.12 | 3.2 | 0.10 | 2.5 | 0.022 | 0.55 | 1 / 2 (0.50) |
| 1812 | 3246 | 0.12 | 3.2 | 0.18 | 4.6 | 0.022 | 0.55 | 1 |
| 2010 | 5025 | 0.20 | 5.0 | 0.10 | 2.5 | 0.024 | 0.6 | 3 / 4 (0.75) |
| 2512 | 6332 | 0.25 | 6.3 | 0.12 | 3.2 | 0.024 | 0.6 | 1 |
Cherechedza: Hunhu hwesimba re resistor hunoenderana nezvinodiwa nemugadziri, resistance yekupisa kwe substrate, magadzirirwo epad, uye mamiriro ekunze. Gara uchiongorora nedatasheets.
Maitiro eSMD Resistor Saizi Anokanganisa Kuita
Thermal Management
Diki SMD resistor package mafomati anoratidza yakakwira yekupisa kupikisa nekuda kwekuderedzwa kwenzvimbo uye huwandu. Iyo 0201 inobvisa 50 mW inogona kusvika kune tembiricha inodarika chiyero chayo kana nzvimbo isina kukwana yemhangura ichibatana nemapads, nepo 1206 inobata simba rimwechete inoramba ichitonhorera.
Electrical Characteristics at High Frequencies
Parasitic inductance uye capacitance scale ine hukuru hwemuviri. MuRF uye yakakwirira-yekumhanyisa dhijitari maseketi, compact mapakeji senge 0402 inoderedza parasitics, asi pakadzika mafrequency, izvi zvinokonzeresa zvinova zvisina basa kana zvichienzaniswa nekupisa zvinomanikidza.
Precision uye Temperature Coefficient
Mapakeji makuru anowanzo kwanisa kushivirira zvinhu zvakasimba uye anoderedza TCR (Temperature Coefficient of Resistance) nekuda kwekukura kwemaitiro ekugadzira uye kugadzikana kwekupisa kuri nani. Mashandisirwo akakosha ekugadzirisa anowanzo da 0805 kana mafomati makuru pasinei nekushaikwa kwenzvimbo.
Mechanical Kuvimbika
Solder joint stress kubva pakuwedzera kupisa, vibration, uye flexure zvinokanganisa zvidiki zvidiki zvisina kuenzana. Iyo PCB footprint resistor dhizaini inofanirwa kuverengera CTE mismatch, kunyanya mumotokari kana aerospace application uko 0603 kana makuru mapakeji anoratidza kuvimbika kwepamusoro kwenguva refu.
Zvakajairwa SMD Resistors
Kusarudza iyo Right SMD Resistor Size
Power Dissipation Analysis
Verenga simba repamusoro pasi peyakanyanya-nyaya voltage uye yazvino, wobva wadzora ne50-70% yekuvimbika. Muchinjika-referensi kukosha uku kunopesana neanogadzira macurves anoratidza simba rekubata maringe nePCB nzvimbo yemhangura uye ambient tembiricha.
Frequency uye Signal Kutendeseka Zvinodiwa
Kune maseketi ari pamusoro pe100 MHz, koshesa mapakeji ane data rakadhindwa reparasitic. Shandisa 0402 kana 0603 munzira dzechiratidzo uko kunodzorwa impedance zvine basa, kudzivirira mafomati akakura anounza inductance isingadiwe.
Manufacturing Kugona Kuongorora
Simbisa sarudzo yemumwe wako-nenzvimbo chaiyo uye nozzle hesitori. Havasi vese vanogadzira zvibvumirano vanobata nekuvimbika 0201; kuyedza kuchengetedza mari kuburikidza nekunyanyisa miniaturization kunogona kudzosera matambudziko egoho uye mutengo wekugadzirisa zvakare.
Testability uye Rework Kufunga
In-circuit kuyedzwa nemaprobe ekubhururuka kana mubhedha-wezvipikiri zvigadziriso zvinoda kusvikika bvunzo mapoinzi. Kana kugadziridzwa kwemunda kuchitarisirwa, tsanangura 0603 kana yakakura kuitira kuti nyanzvi igone kupindira pasina hunyanzvi hwekugadzira micro-soldering.
Supply Chain uye Cost Analysis
Ultra-madiki mapakeji anowanzo takura maprimiyamu emitengo uye nguva refu yekutungamira. Kuenzana mutengo weBOM uchipesana nenjodzi yekuisa, kunyanya kune yakasarudzika mibairo uko 0201 kuwanikwa kunochinja zvakanyanya kana ichienzaniswa neyakagadzirwa 0805 stock.
PCB Layout Guidelines yeSMD Resistors
IPC-Inowirirana Nyika Matani
Tevedzera IPC land pateni resistor zviyero (IPC-7351) seyakatanga, wobva wagadzirisa zvichibva pakurudziro yemugadziri. Pad zviyero zvinopesvedzera zvakananga kuvimbika kwemajoini ekutengesa uye kunyatsoita kupisa.
Solder Paste Stencil Dhizaini
Chengetedza aperture-to-pad reshiyo pakati pe0.8–1.0 kuitira kuburitsa kwakaringana penama. Regedza kuisa mavias ekupisa mukati memapads, sezvo vachigona wick solder panguva yekuyerera, kugadzira isina kukwana fillet kuumbwa pamapakeji madiki.
Thermal Relief uye Copper Inodurura
Kune ma resistors ari kusvika pamiganhu yavo ye resistor power rating , wedzera nzvimbo dzepad kuita copper pours kana kuwedzera thermal vias dzinobatanidza ne internal ground planes. Verengai thermal resistance uchishandisa maturusi emugadziri kana software ye thermal simulation.
Array Layout Thermal Coupling
Kana uchiisa akawanda anopikisa mumitsetse yakaomesesa, mira zvinzvimbo kudzivirira nzvimbo dzinopisa dzenzvimbo. Clustered 0402 resistors munhevedzano-parallel zvigadziriso zvinogona kugadzira ekupisa kwekupisa mamiriro kana nzvimbo isina kukwana iripo.
Yakajairwa SMD Resistors Size
Kugadzira uye Kuedza Maitiro Akanakisisa
Reflow Profile Optimization
Diki-package SMD resistor saizi kupisa uye kutonhora nekukurumidza. Tune tembiricha yepamusoro uye soak zones kune zvakatemwa zvemugadziri-akanyanya hukasha maprofiles anokonzera kukuvara kwemetallization, nepo kusakwana kupisa kunoburitsa majoini anotonhora.
Automated Optical Inspection Matambudziko
0201 mapakeji anosundira AOI resolution miganho. Ita hurongwa hwekuronga hunoverengera chikamu polarity ambiguity uye solder fillet kuoneka zvipingaidzo zvinoenderana ne sub-millimeter geometries.
Electrical Test Strategy
Zvifambiso zvekubhururuka zvinoda mapedhi akakura kana akatsaurirwa bvunzo mapoinzi apo resistor density inodarika kugona kwekugadzirisa. Kune 0402 uye idiki, funga mu-circuit inoshanda yekuyedza kwete yemunhu chikamu chekuongorora.
Zvakajairwa SMD Resistor Saizi Yekusarudza Zvikanganiso
Idiki inogara iri nani kune miniaturization?
Kwete. Kudzikisira kwehasha pasina kuongororwa kwemafuta kunotungamirira kukundikana kusati kwasvika. Iyo 0805 inodzorwa zvakanaka nemafuta kazhinji inodarika 0402 yakasimbiswa nemhepo mune imwechete application kunyangwe yakakura tsoka.
Ndinogona kutsiva zvakananga 1206 ne0805?
Chete mushure mekugadzirisa kupera kwesimba uye kukwira kwekushisa. Kutsiva kunoderedza kupisa kwehuwandu ne60%, zvichigona kukonzera kushanda kupfuura miganhu yakachengeteka kunyangwe zviyero zvemvura zvichiratidzika zvakaenzana.
Ko solder mask inokanganisa zviyero zvesimba?
Ehe. Solder mask pamusoro pemapedhi inoderedza kupisa kwekufambisa kune yakatenderedza mhangura. Yakafumurwa padhi madhizaini anokurudzirwa nevagadziri anotora solder mask-yakatsanangurwa (SMD) kana isiri-solder mask-yakatsanangurwa (NSMD) masisitimu pakuyedzwa kwavo.
Ndinofanira kushandisa diki pasuru yangu inogona kuisa?
Kwete hazvo. Kuenzanisa maitiro ekusarudza SMD resistor saizi kunosanganisira kuongorora iyo yakazara chigadzirwa lifecycle-kugadzira goho, kuvimbika kwemunda, uye kushanda-kwete chete kwekutanga kugona kwegungano.
mhedziso
Kusarudza saizi dzakakodzera dzeSMD resistor kunoda kuyera mashandiro emagetsi, manejimendi yekupisa, kugona kugadzira, uye mutengo wese wekuva muridzi. Hukama huripo pakati pehukuru hwepakeji nehukuru hweSMD resistor vs kupararira kwesimba hunonyanya kuumba kuvimbika kwesekitori uye kubudirira kwekugadzira.
KuHighleap Electronics, timu yedu yeinjiniya inopa ongororo yekufananidzira kwekupisa uye kusimbiswa kweNPI kuti igadzirise sarudzo ye resistor yePCB yako yakatarwa nenzvimbo yekushanda. Taura nesu kuti uwane mazano ekugadzira-kugadzira-purojekiti yako inotevera.
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-
- Gerber, ODB++, kana .pcb, spec.
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- uwandu
- Kuchinja nguva
Pamusoro pekugadzira PCB, isu tinopa huwandu hwakakwana hwemagetsi masevhisi, anosanganisira PCB dhizaini, PCBA, uye turnkey mhinduro. Kunyangwe iwe uchida rubatsiro neprototyping, dhizaini yekusimbisa, kutsvagisa chikamu, kana kugadzirwa kwakawanda, isu tinopa yekupedzisira-kusvika-kumagumo rutsigiro kuti uve nechokwadi chekubudirira kweprojekiti yako.
Kune masevhisi ePCBA, ndapota ipa BOM yako (Bhiri reZvinhu) uye chero mirairo yegungano. Isu tinopawo DFM/DFA ongororo yekukwidziridza zvigadziriso zvako zvekugadzira uye kusangana, kuve nechokwadi chekuita kwakatsetseka kwekugadzira.