PCB ụdị nchebe

N’okwu kachasị mfe, enwere ike ịkọwa njigide PCB dị ka ndị a:

Onye nrụpụta rụpụtara eriri wiwi PCB maka ihe ndị dị na mpụga na mpaghara edobeghị na bọọdụ sekit, ebe ntụpọ ọla kọpa ma ọ bụ ihe osisi sekit ndị ọzọ ga -abanye ma ọ bụ gafee. The area can be or contain copper and can be of any shape.

In most cases, retention zones are used to keep certain board areas far enough away from other components to prevent or minimize EMI. However, they are also used to provide spacing for fan-out tracing of surface-mounted components. Ihe atụ bụ ndị nhazi ma ọ bụ FPGas, nke na -abụkarị nyocha PCB na bọọdụ mmepe. Edepụtara ụfọdụ ụdị ndoputa dị n’okpuru.

Ụdị nchedo PCB

L antenna

Probably, the most common type of reservation is to reserve an area of copper wire around an onboard or connected antenna to prevent EMI from affecting the fidelity of the transmitted or received signal. Ndokwa nwere ike ịnwe eriri eriri antenna na sekit ndị ọzọ.

L akụkụ

It is also common to make room for fan-outs around components (especially EM radiators). This is true for microprocessors, FPgas, AFE and other medium to high pin count components (commonly used for patch packages).

L Mpaghara nwechapụ oghere

Mwepụ ihu dị ezigbo mkpa n’ichepụta ihe. Kpọtụrụ, a na -ekewa ogwe n’ime bọọdụ nkeonwe n’oge nzukọ PCB. To do this, enough clearance must be left for wiring or scoring.

L nsuso

Sometimes it may be advantageous to define reservation areas around traces. Mgbe ụfọdụ, a na -eji ya maka ahịrị nnyefe nke ikuku iji nweta impedance a na -achịkwa.

L drilling

Many plates are installed by screws or bolts. In these cases, it is helpful to define the spacing around the holes. Insufficient spacing can affect assembly, interrupt circuit operation, and even cause circuit board damage. Maka oghere, ị na-esokarị iwu CM nke DFM.

L njikọ

Depending on the connector type in terms of layout and placement, your board design may need to consider two considerations: the footprint of the connector board and the paneling. Ọtụtụ mgbe, okirikiri nhọrọ ukwuu nke njikọ ma ọ bụ plọg anaghị agụnye oghere maka njikọ mpụga ma ọ bụ njikọ eriri. In these cases, maintaining state is important to ensure that the circuit actually performs as expected.

L mgba ọkụ

Ihe ọzọ dị mma idobere bụ inye ohere iji tụgharịa ma ọ bụ bugharịa ihe mgbanaka kwụ ọtọ.

Ndepụta dị n’elu na -enye ụfọdụ ụdị na ojiji maka njigide PCB. N’ọnọdụ ndị ọzọ, agbanyeghị, ọ ga -adị mkpa ka ị kọwaa mpaghara echekwara. Dịka ọmụmaatụ, ọ bụrụ na imewe gị na -eji components; Dịka ọmụmaatụ, na amplifiers na -arụ ọrụ, ebe enwere nnukwu ekwekọghị ekwekọ n’etiti ntinye na nrụpụta, sekit nwere ike ị nweta nzaghachi mgbapụta ugbu a, yabụ ọ nwere ike ịdị mkpa ịnye ụdị nchedo a: mgbanaka nchedo PCB. Agbanyeghị na ekenyeghị ya dị ka mpaghara echedoro, mgbanaka nchedo na -arụ ọrụ dị ka ihe mgbochi anụ ahụ na ngwa na mpụga, na -egbochi ikuku dị n’ime pụọ na mpaghara ahụ. Ugbu a, anyị dị njikere ileba anya ka anyị ga -esi hụ na ndoputa na -arụ ọrụ ha.

Zere nsogbu

Usoro njigide PCB na -adị irè ma ọ bụrụ na ha mezuru ebumnuche ha. Nke a bụ iji nye mwepụ n’akụkụ ụfọdụ nke bọọdụ ahụ na ihe ọ bụla na mpụga. Iji mezuo nke a, ịkwesịrị ịgbaso ezigbo ntuziaka Keepout.

Nkọwa njigide PCB

L Kpebie ihe kpatara eji achọ njigide

L Kpebisie ike ole oghere dị ka ojiji si dị

L Jiri akara nbipụta ihuenyo iji chọpụta mpaghara ndoputa

L Hụ na akwụkwọ nhazi gị nwere ozi njigide

Njikwa PCB bụ ihe bara uru maka imepụta bọọdụ gị, na -agba mbọ hụ na ọ na -eme dị ka atụ anya ya. Site n’ịgbaso ntuziaka ndị a ma jiri ha mee ihe nke ọma, ị nwere ike zere esemokwu okirikiri nhọrọ ukwuu ma melite ntụkwasị obi PCBA mgbe ebusịrị gị ọrụ.