Impande ebyiri pcb ikibaho prototype FR4 TG140 impedance yagenzuwe PCB
Ibisobanuro ku bicuruzwa:
| Ibikoresho shingiro: | FR4 TG140 |
| Ubunini bwa PCB: | 1,6 +/- 10% mm |
| Kubara: | 2L |
| Ubunini bw'umuringa: | 1/1 oz |
| Kuvura hejuru: | HASL-LF |
| Mask yo kugurisha: | Icyatsi kibisi |
| Ibara rya silike: | Cyera |
| Inzira idasanzwe: | Bisanzwe |
Gusaba
Ikibaho cyumuzunguruko gifite inzitizi yagenzuwe gifite ibintu bikurikira:
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2. Koresha ibikoresho byihariye byo gushushanya PCB kugirango umenye neza ko impedance yujuje ibisabwa;
3.Mu miterere yose ya PCB no kugendana, koresha inzira ngufi kandi ugabanye kunama kugirango umenye neza ko impedance ihagaze;
4. Kugabanya kwambukiranya imipaka hagati yumurongo wikimenyetso n'umurongo w'amashanyarazi n'umurongo w'ubutaka, hanyuma ugabanye umuhanda no kwivanga k'umurongo w'ikimenyetso;
5.
6. Koresha tekinoroji ihuza imiyoboro kugirango ugabanye urusaku hamwe nimirasire ya electronique;
7. Ukurikije ibisabwa bitandukanye byingutu, hitamo uburebure bukwiye, ubugari bwumurongo, intera yumurongo hamwe na dielectric ihoraho;
8.
Kuki kugenzura inzitizi zisanzwe zishobora gutandukana 10% gusa?
Inshuti nyinshi zirizera rwose ko impedance ishobora kugenzurwa kugeza 5%, ndetse numvise no kubisabwa 2.5%. Mubyukuri, gahunda yo kugenzura impedance ni 10% gutandukana, birenze gato, birashobora kugera kuri 8%, hariho impamvu nyinshi:
1, gutandukana kwibikoresho bya plaque ubwabyo
2. Gutandukana gutandukana mugihe cyo gutunganya PCB
3. Iation yumuvuduko w umuvuduko uterwa na lamination mugihe cyo gutunganya PCB
4. Ku muvuduko mwinshi, hejuru yubutaka bwa fayili yumuringa, ingaruka za fibre y ibirahure ya PP, ningaruka za DF inshuro zinyuranye zigitangazamakuru zigomba kumva inzitizi.
Nihehe mbaho zumuzunguruko zisabwa impedance zikoreshwa muri rusange?
Ikibaho cyumuzingi hamwe nibisabwa byangiritse mubisanzwe bikoreshwa mugukwirakwiza ibimenyetso byihuse, nko kohereza ibyuma byihuta byihuta, gukwirakwiza radiyo yumurongo wa radiyo hamwe no gukwirakwiza ibimenyetso bya milimetero. Ibi ni ukubera ko impedance yinama yumuzunguruko ifitanye isano no kwihuta kwihuta no guhagarara kwikimenyetso. Niba igishushanyo mbonera kidafite ishingiro, bizagira ingaruka ku ihererekanyabubasha ry’ikimenyetso ndetse binatera gutakaza ibimenyetso. Kubwibyo, mubihe bisaba ubwiza bwogukwirakwiza ibimenyetso, mubisanzwe birakenewe gukoresha imbaho zumuzunguruko zisabwa inzitizi.
Ibibazo
Impedance ipima opposition yumuzunguruko wamashanyarazi mugihe uhinduranya amashanyarazi akoreshwa kuriyo. Nibihuza ubushobozi hamwe no kwinjiza amashanyarazi kumurongo mwinshi. Impedance ipimirwa muri Ohms, kimwe no kurwanya.
Ibintu bike bigira ingaruka kubigenzuzi mugihe cya PCB harimo ubugari bwumurongo, uburebure bwumuringa, uburebure bwa dielectric hamwe na dielectric ihoraho.
1 Er Er iringaniza itandukanye nagaciro ka impedance
2 thick Ubunini bwa dielectric buringaniye nagaciro ka impedance
3 ubugari bwumurongo buringaniye buringaniye nagaciro ka impedance
4 thick Umubyimba wumuringa uringaniza ugereranije nagaciro ka impedance
5） Imirongo itandukanijwe iringaniza nagaciro ka impedance ed impedance itandukanye）
6 thickness Ubugurisha bwumuguzi bugereranije buringaniye nagaciro ka impedance
Mugihe kinini cyama progaramu ihuye nimbogamizi za PCB ni ngombwa mugukomeza ubudakemwa bwamakuru no kwerekana ibimenyetso neza. Niba impedance ya PCB ihuza ibice bibiri idahuye nibice biranga impedance, hashobora kwiyongera ibihe byo guhinduranya mubikoresho cyangwa umuzunguruko.
Impera imwe yarangiye, Impedance itandukanye, Impinduka ya Coplanar hamwe na Broadside Coupled Stripline
