1n4148: txhua yam hais txog lub hom phiaj dav dav

cev 1n4148

Muaj ntau hom semiconductor diodes, nrog rau ntau yam kev siv. Los ntawm cov rectifier diodes, los ntawm Zener, mus rau LEDs uas tso tawm lub teeb. Hauv kab lus no peb txaus siab cov khoom siv hluav taws xob concrete, cov 1n4148 lub hom phiaj dav dav diode. Nws yuav yog ib qho uas peb tshuaj xyuas raws li nws tus yam ntxwv thiab peb yuav qhia qee qhov ua tau.

1n4148 yog chav tsev me me silicon uas hides yawm secrets uas koj yuav tsum paub. Ib feem uas tuaj yeem pab txhawb ntau rau koj cov haujlwm yog tias koj nyiam hluav taws xob DIY lossis yog tus tsim khoom ...

Dab tsi yog semiconductor diode?

cev 1n4148

Un diode yog cov cuab yeej siv hluav taws xob Nws ua raws li lub xeev hloov pauv thiab ib txoj hauv kev rau tam sim no. Txawm hais tias muaj kev zam, xws li LED lossis IR diode, uas tso tawm hluav taws xob sib nqus. Hauv thawj kis, pom lub teeb ntawm qee qhov xim, lossis hluav taws xob tawg. Ntawm qhov tod tes, hauv kab lus no, txij li peb yuav tham txog 1n4148, peb tsuas yog txaus siab rau cov uas ua raws li kev cuam tshuam tam sim no.

Lo lus diode los ntawm Greek, thiab txhais tau tias "ob txoj kev". Dua li qhov no, nws ua dab tsi yog qhov sib txawv, uas yog, nws thaiv qhov ntws ntawm tam sim no mus rau lwm qhov kev taw qhia. Txawm li cas los xij, yog tias tus yam ntxwv IV nkhaus ntawm diode tau txais txiaj ntsig, nws tuaj yeem pom tias nws muaj ob thaj tsam sib txawv. Hauv qab qhov muaj peev xwm sib txawv nws yuav coj zoo li qhib Circuit (tsis ua), thiab saum toj no nws zoo li luv Circuit Court nrog hluav taws xob me me kuj.

Cov diodes no muaj a union ntawm ob hom semiconductor P thiab N. Thiab lawv kuj muaj ob qhov txuas txuas, ib qho anode (cov dav hlau zoo) thiab cathode (cov dav hlau tsis zoo). Nyob ntawm txoj kev uas tam sim no tau thov, ob qhov kev teeb tsa tuaj yeem sib txawv:

  • Ncaj polarization: thaum cov dej ntws hla mus. Qhov tsis zoo ntawm lub roj teeb lossis lub zog xa tawm cov hluav taws xob dawb los ntawm N siv lead ua thiab cov khoom siv hluav taws xob tau qhia ncaj qha rau PN txuas. Qhov zoo ntawm lub roj teeb lossis lub hauv paus nyiam cov khoom siv hluav taws xob los ntawm P siv lead ua (thawb lub qhov rau PN txuas). Thaum qhov muaj peev xwm sib txawv ntawm cov dav hlau loj dua qhov muaj peev xwm sib txawv ntawm thaj chaw them nqi, cov khoom siv hluav taws xob dawb hauv N siv lead ua tau txais lub zog txaus los dhia mus rau hauv lub qhov hauv P crystal thiab ntws tam sim no.
  • Rov qab polarization: thaum nws ua raws li cov insulator thiab tsis tso cai rau tam sim no ntws. Hauv qhov no, qhov sib txawv ntawm qhov sib txawv yuav yog qhov sib txawv, uas yog, lub hauv paus yuav muab rau hauv qhov kev coj rov qab, ua rau cov hluav taws xob tam sim no nkag mus rau thaj tsam P thiab thawb cov hluav taws xob mus rau hauv lub qe. Lub davhlau ya nyob twg zoo ntawm lub roj teeb yuav nyiam cov khoom siv hluav taws xob los ntawm N cheeb tsam, thiab qhov no yuav tsim cov kab hluav taws xob uas yuav ua raws li cov rwb thaiv tsev ntawm kev sib tshuam.
Ntawm no peb tab tom tsom mus rau ib hom diodes. Qhov sib txawv nrog photodiodes lossis LEDs, thiab lwm yam.

Cov cheebtsam no tau tsim los raws li lub hauv paus ntsiab lus ntawm Lee De Forest kev sim. Thawj qhov tshwm sim yog lub tshuab nqus dej loj lossis lub tshuab nqus tsev. Thermionic iav ampoules nrog cov kab hluav taws xob uas ua haujlwm raws li cov cuab yeej no, tab sis tso tawm cua sov ntau heev, siv ntau heev, loj, thiab tuaj yeem raug puas tsuaj zoo li lub teeb. Yog li nws tau txiav txim siab los hloov nws nrog cov khoom siv hauv lub xeev (cov khoom siv hluav taws xob).

Aplicaciones

Diodes, xws li 1n4148, muaj ntau ntawm cov ntawv thov. Lawv yog cov khoom siv nrov tshaj plaws hauv cov khoom siv hluav taws xob ncaj qha tam sim no thiab tseem nyob hauv qee qhov hloov pauv tam sim no. Qhov tseeb, peb twb pom li cas hauv cov khoom siv fais fab lawv ua tiav txoj haujlwm tseem ceeb heev thaum mus ntawm AC mus rau DC. Qhov ntawd yog lawv cov yam ntxwv raws li rectifiers, txij li lawv hloov pauv sinusoidal teeb liab tam sim no rau ib qho txuas ntxiv hauv daim ntawv ntawm mem tes los ntawm kev thaiv qhov tam sim no hauv qhov kev coj rov qab.

Lawv kuj tuaj yeem ua haujlwm zoo li hluav taws xob tswj cov keyboards, raws li cov tiv thaiv hluav taws xob, raws li lub tshuab hluav taws xob nrov, thiab lwm yam.

Hom diode

Diodes tuaj yeem raug cais raws qhov hluav taws xob uas lawv tiv taus, siv zog, cov khoom siv (piv txwv li: silicon), thiab lwm yam ntxwv. Ib txhia ntawm hom tseem ceeb tshaj plaws Yog:

  • Ntes diode: lawv paub tias yog lub teeb liab qis lossis taw tes rau kev sib cuag. Lawv tau tsim los siv nrog kev siv ntau zaus thiab tam sim no qis. Koj tuaj yeem pom lawv ob qho tib si ua los ntawm germanium (qhov pib 0.2 txog 0.3 volts) thiab silicon (qhov pib 0.6 txog 0-7 volts). Nyob ntawm qhov doping ntawm thaj tsam P thiab N lawv yuav muaj kev tiv thaiv sib txawv thiab cov yam ntxwv lwj.
  • Rectifier diode: lawv tsuas yog tsav tsheb ncaj qha, raws li kuv tau piav qhia ua ntej. Lawv tau siv los hloov pauv hluav taws xob lossis kho cov teeb liab. Koj tseem tuaj yeem pom ntau hom sib txawv, nrog rau kev zam sib txawv raws li qhov tam sim no thiab txhawb zog.
  • Zener diode: yog lwm hom nrov heev. Lawv tso cai tam sim no ntws rov qab thiab feem ntau siv los ua cov cuab yeej tswj. Yog hais tias lawv yog polarized ncaj qha lawv tuaj yeem coj zoo li ib txwm diode.
  • LED: lub teeb-emitting diode txawv ntawm qhov qub, txij li qhov nws ua yog hloov pauv hluav taws xob ua hluav taws xob. Qhov no yog ua tsaug rau cov txheej txheem electroluminescence uas qhov thiab qhov hluav taws xob sib sau ua ke los tsim lub teeb no thaum nws ncaj qha ncaj qha.
  • Schottky diode: Lawv paub tias yog rov qab tau zoo lossis cov nqa khoom kub. Lawv feem ntau yog ua los ntawm silicon thiab muaj qhov tshwj xeeb me me poob qis (<0.25v kwv yees). Ntawd yog, lub sijhawm hloov pauv yuav luv heev.
  • Schockley diode: Txawm hais tias muaj qhov zoo sib xws hauv lub npe, nws txawv ntawm qhov dhau los. Nws muaj PNPN kev sib tshuam thiab muaj ob lub xeev muaj peev xwm ruaj khov (thaiv lossis cuam tshuam siab thiab coj ua lossis tsis muaj qhov cuam tshuam tsawg).
  • Kauj Ruam Rov Qab Diode (SRD): nws tseem paub tias yog tus nqi cia, thiab muaj peev xwm khaws cov nqi ntawm cov mem tes zoo thiab siv cov mem tes tsis zoo ntawm cov teeb liab sinusoidal.
  • Qhov diode: Kuj tseem hu ua Esaki, lawv tau siv ua qhov hloov pauv ceev hauv lub xeev zoo li lawv tuaj yeem ua haujlwm hauv nanoseconds. Qhov ntawd yog vim thaj chaw depletion nyias heev thiab txoj kab nkhaus uas thaj chaw tsis zoo tiv thaiv poob qis raws li qhov hluav taws xob nce.
  • Varactor diode ua: nws tsis paub tsawg dua li yav dhau los, tab sis nws kuj tseem siv hauv qee qhov haujlwm. Varicap siv los ua qhov ntsuas hluav taws xob tswj tau qhov sib txawv. Nws ua haujlwm hloov pauv.
  • Laser thiab IR photodiode: Lawv yog diodes zoo ib yam li LEDs, tab sis tsis txhob siv lub teeb tawm, lawv tso tawm qhov tshwj xeeb hluav taws xob sib nqus. Raws li nws tuaj yeem yog lub teeb monochromatic (laser) lossis infrared (IR).
  • Kev Siv Hluav Taws Xob Hluav Taws Xob Hluav Taws Xob (TVS)- Nws tau tsim los hla lossis cuam tshuam qhov hluav taws xob nrawm thiab tiv thaiv cov hluav taws xob los ntawm qhov teeb meem no. Lawv tseem tuaj yeem tiv thaiv tawm tsam electrostatic discharge (ESD).
  • Kub-doped diodes: lawv yog diodes uas tau doped siv kub atoms. Qhov ntawd ua rau lawv muaj qhov zoo dua, thiab qhov ntawd yog qhov lawv tau teb sai dua.
  • Peltier diode: hom cell no tso cai rau lub koom haum muaj peev xwm tsim hluav taws xob thiab cua txias nyob ntawm seb sab twg. Yog xav paub ntxiv.
  • Avalanche diode: Lawv zoo ib yam li Zener, tab sis lawv ua haujlwm nyob rau lwm qhov xwm txheej hu ua avalanche effect.
  • lwm leej lwm tus: muaj lwm qhov xws li GUNN, kev hloov pauv ntawm yav dhau los xws li OLEDs rau cov ntxaij vab tshaus, thiab lwm yam.

1n4148 lub hom phiaj dav dav diode

cim thiab pinout ntawm diode 1n4148

El diode 1N4148 Nws yog ib hom txheej txheem hloov pauv silicon diode. Nws yog ib qho ntawm cov nyiam siv hauv ntiaj teb cov khoom siv hluav taws xob. Nws kuj tseem ruaj khov, vim nws muaj cov yam ntxwv zoo heev txawm tias nws tus nqi qis.

Lub npe ua raws li JEDEC lub npe, thiab muaj txiaj ntsig zoo rau kev hloov daim ntawv thov mus txog kwv yees li 100 Mhz zaus nrog lub sijhawm rov qab rov qab uas feem ntau tsis tshaj 4ns.

Historia

Texas seev tsim nyob rau xyoo 1960 1n914 diode. Tom qab nws sau npe ib xyoos tom qab, ntau dua kaum lub tuam txhab tsim khoom tau txais txoj cai los tsim nws. Xyoo 1968 1N4148 yuav mus txog JEDEC cov npe, pib siv rau hauv kev ua tub rog thiab kev lag luam thaum lub sijhawm ntawd. Tam sim no muaj ntau tus neeg tsim khoom thiab muag cov cuab yeej no ob qho tib si hauv qab lub npe 1N4148 thiab hauv qab 1N914. Qhov sib txawv ntawm ob yog xyaum lub npe thiab lwm yam ntxiv. Lawv tsuas yog sib txawv hauv lawv qhov kev qhia tawm tam sim no.

Pinout thiab ntim ntawm 1n4148

Movilideas - 50 Chav Nyob ...
Movilideas - 50 Chav Nyob ...
Tsis muaj kev txheeb xyuas

1n4148 diode feem ntau los ntim hauv qab DO-35, nrog lub hnab ntawv iav axial. Koj tseem tuaj yeem pom nws hauv lwm hom ntawv xws li SOD rau kev teeb tsa saum npoo, thiab lwm yam.

Raws li rau pinout, nws tsuas muaj ob tus pin lossis lub dav hlau. Yog tias koj saib cov kab txaij dub ntawm cov diode no, qhov kawg ze rau kab txaij dub yuav yog cathode, hos lwm qhov kawg yuav yog anode.

Cov Lus Qhia Ntxiv - datasheet

Cov Lus Qhia Tshwj Xeeb

Raws li rau specifications los ntawm 1n4148, lawv feem ntau yog:

  • Tshaj siab tshaj plaws rau qhov hluav taws xob1v txog 10mA
  • Yam tsawg kawg nkaus qhov hluav taws xob thiab thim rov qab tam sim no: 75v ntawm 5 μA; 100 V ntawm 100 μA
  • Lub sijhawm rov qab siab tshaj plawsIb: 4ns
  • Lub zog siab tshaj tawmLub zog: 500mW

Yuav yuav qhov twg 1n4148

Yog tias koj xav tau yuav 1n4148 diode Koj yuav tsum paub tias nws yog cov cuab yeej pheej yig heev, thiab koj tuaj yeem pom nws hauv cov khw muag khoom siv hluav taws xob tshwj xeeb lossis hauv is taws nem hauv thaj chaw xws li Amazon. Piv txwv, ntawm no yog qee qhov kev pom zoo:


Cov ntsiab lus ntawm tsab xov xwm ua raws li peb cov ntsiab cai ntawm kev tswj hwm kev ncaj nceesCov. Tshaj tawm ib qho yuam kev nyem no.

Yog thawj tus tuaj tawm tswv yim

Tso koj saib

Koj email chaw nyob yuav tsis tsum luam tawm. Yuav tsum tau teb cov cim nrog *

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  1. Lub luag haujlwm rau cov ntaub ntawv: Miguel Ángel Gatón
  2. Lub hom phiaj ntawm cov ntaub ntawv: Tswj SPAM, kev tswj xyuas tawm tswv yim.
  3. Sau raws cai: Koj kev tso cai
  4. Kev sib txuas lus ntawm cov ntaub ntawv: Cov ntaub ntawv yuav tsis raug xa mus rau lwm tus neeg thib peb tsuas yog los ntawm kev txiav txim siab raug cai.
  5. Cov ntaub ntawv khaws cia: Cov Ntaub Ntawv khaws tseg los ntawm Occentus Networks (EU)
  6. Txoj Cai: Txhua lub sijhawm koj tuaj yeem txwv, rov qab thiab tshem tawm koj cov ntaub ntawv.