Ukumelana kwamandla okuya ku-247 we-EAK konjiniyela bokuklama ukuhlinzeka ngephakheji ezinzile yohlobo lwe-transistor yamadivayisi anamandla aphezulu, amandla angu-100W-150W
Lezi resistors ziklanyelwe izinhlelo zokusebenza ezidinga ukunemba nokuzinza.I-resistor idizayinelwe ngesendlalelo se-alumina ceramic esihlukanisa i-elementi yokumelana ne-mounting plate.
I-Eak ebunjwe i-TO-247 yefilimu ewugqinsi yokumelana namandla
Lesi sakhiwo sinikeza ukumelana nokushisa okuphansi kakhulu ngenkathi iqinisekisa ukumelana nokushisa okuphezulu phakathi kwe-terminal kanye ne-backplane yensimbi.Ngenxa yalokho, lezi resistors zine-inductance ephansi kakhulu, ezenza zifanelekele ukusetshenziswa kwe-high-frequency kanye ne-high-speed pulse application.
Ukumelana kuhluka kusuka ku-0.1Ω kuye ku-1 MΩ,Izinga lokushisa elisebenzayo:-55°C kuya ku-+175°C.
I-EAK izophinda ikhiqize okokusebenza okungaphezu kwalokhu kucaciswa ukuze ihlangabezane nezidingo zamakhasimende.Izinqamuli zamandla ze-EAK zithobelana nezindinganiso ze-ROHS, zisebenzisa ukunqanyulwa okunganomthofu.
Izici:
■ Amandla okusebenza angu-100 W
■TO-247 ukulungiselelwa kwephakheji
■ Ukukhweza isikulufu esisodwa kwenza kube lula ukunamathela kusinki wokushisa
■Umklamo ongaguquki
■ ROHS iyahambisana
■ Izinto ezisetshenziswayo ngokuhambisana ne-UL 94 V-0
I-M3 screw mount ku-radiator.Indawo ebiyelwe ebunjiwe ihlinzeka ngokuvikeleka futhi kulula ukuyifaka.Idizayini engeyona inductive, izindlu zokuhlukaniswa zikagesi.
Isicelo:
■Ukumelana netheminali kusikhulisamandla se-RF
■Low energy pulse load, grid resistor in power supply
■ I-UPS, amabhafa, izilawuli zikagesi, izinto eziphikisa ukulayisha nokukhipha kumamonitha e-CRT
Amabanga okuphikisa:0.05 Ω ≤ 1 MΩ (amanye amanani ngesicelo esikhethekile)
Ukubekezelela Ukumelana: ± 1 0% kuya ku-± 1%
I-Temperature Coefficient:≥ 10 Ω: ±50 ppm/°C ibhekisela ku-25 °C, ΔR ithathwe kokuthi +105°C
(enye i-TCR ngesicelo esikhethekile samanani we-ohmic anomkhawulo)
Isilinganiso samandla:100 W ku-25°C izinga lokushisa elingaphansi lehlisiwe laya ku-0 W ku-175°C
I-voltage ephezulu yokusebenza: 350 V , max.500 V ngesicelo esikhethekile
Amandla kagesi e-Dielectric: 1,800 V AC
Ukumelana nokushisisa:> 10 GΩ ku-1,000 V DC
Amandla e-Dieletric: MIL-STD-202, indlela 301 (1,800 V AC, 60 sec.) ΔR< ±(0.15 % + 0.0005 Ω)
Impilo yokulayisha:MIL-R-39009D 4.8.13, amahora angu-2,000 ngamandla alinganiselwe, ΔR< ±(1.0 % + 0.0005 Ω)
Ukumelana nomswakama: -10°C kuya +65°C, RH > 90 % umjikelezo 240 h, ΔR< ±(0.50 % + 0.0005 Ω)
Thermalshock:MIL-STD-202, indlela 107, Cond.F, ΔR = (0.50 % + 0.0005Ω) ubuningi
Ibanga lokushisa elisebenzayo: -55°C kuya +175°C
I-Terminalstrength:MIL-STD-202, indlela 211, Cond.A (Isivivinyo Sokudonsa) 2.4 N, ΔR = (0.5 % + 0.0005Ω)
Ukudlidliza, imvamisa ephezulu:MIL-STD-202, indlela 204, Cond.D, ΔR = (0.4 % + 0.0005Ω)
Izinto zomthofu:ithusi elifakwe ethini
I-Torque:0.7 Nm ukuya ku-0.9 Nm M4 kusetshenziswa isikulufu se-M3 kanye nendlela yokufaka i-wahser yokucindezela
Ukumelana nokushisa epuleti lokupholisa:Rth< 1.5 K/W
Isisindo:~4 g
Umhlahlandlela Wokufaka Isicelo se-radiator Mounted Power film resistors
Yazi izinga lokushisa namandla:
Umfanekiso 1-qonda izinga lokushisa kanye nesilinganiso samandla
Ukuhlanganiswa kwezinto zokuqhuba ukushisa:
1,Kunegebe ngenxa yoshintsho endaweni yokukhwelana phakathi kwephakeji le-resistor kanye ne-radiator.Lezi voids zizonciphisa kakhulu ukusebenza kwemishini yohlobo lwe-TO.Ngakho-ke, ukusetshenziswa kwezinto ezibonakalayo ezishisayo ukugcwalisa lezi zikhala zomoya kubaluleke kakhulu.Izinto eziningana zingasetshenziswa ukunciphisa ukumelana nokushisa phakathi kwe-resistor kanye ne-radiator surface.
2, Igrisi ye-silicone ehambisa ukushisa iyinhlanganisela yezinhlayiya eziqhuba ukushisa noketshezi oluhlanganayo kwakheka ukungaguquguquki okufana nokwegrisi.Lolu ketshezi ngokuvamile luwuwoyela we-silicone, kodwa manje sekukhona igrisi ye-silicone yokushisa enhle kakhulu ye-"Non-silicon".Ama-silicone e-thermal conductive asetshenziswe iminyaka eminingi futhi ngokuvamile anokumelana okushisayo okuphansi kakhulu kwazo zonke izinto ezitholakalayo ze-thermal conductive.
3,Ama-gaskets abamba ukushisa athatha indawo ye-silicone eqhuba ukushisa futhi atholakala kubakhiqizi abaningi.Lawa maphedi aneshidi noma umumo osikwe ngaphambilini futhi aklanyelwe izinhlobonhlobo zamaphakheji ajwayelekile afana ne-TO-220 ne-To-247.I-gasket yokushisa ukushisa iyinto eyisiponji, idinga ukucindezela okufanayo nokusebenza okuqinile ukuze ikwazi ukusebenza ngokujwayelekile.
Ukukhethwa kwezingxenye zehadiwe:
Ihadiwe efanele iwukucatshangelwa okubaluleke kakhulu ekwakhiweni okuhle kokupholisa.I-hardware kufanele igcine ingcindezi eqinile futhi efanayo kumshini ngokusebenzisa ibhayisikili elishisayo ngaphandle kokuhlanekezela irediyetha noma okokusebenza.
Abaklami abaningi bancamela UKUxhuma i-DeMint TO power resistor KU-radiator usebenzisa isiqeshana sentwasahlobo esikhundleni sokuhlanganisa isikulufu.Lezi ziqeshana zasentwasahlobo zitholakala kubakhiqizi abambalwa abahlinzeka ngeziphethu eziningi ezijwayelekile namaradiyetha adizayinelwe ngokuqondile ukukhwezwa kwesiqeshana kumaphakheji we-TO-220 kanye ne-To-247.I-clamp yasentwasahlobo inezinzuzo eziningi okulula ukuzihlanganisa, kodwa inzuzo yaso enkulu ukuthi isebenzisa amandla angcono kakhulu phakathi nendawo yesivimbeli samandla (bona Umfanekiso 2)
I-Fig. 3-screw and washer mounting technique
I-Screw Mounting-belleville noma amawasha ane-tapered asetshenziswa ngezikulufu ayindlela ephumelelayo yokuxhuma kurediyetha.Amawasha ase-Belleville angamawasha asentwasahlobo ane-tapered aklanyelwe ukugcina ingcindezi engaguquki phezu kohlu olubanzi lokuchezuka.Ama-gaskets angakwazi ukumelana nemijikelezo yezinga lokushisa elide ngaphandle kokushintsha kwengcindezi.Umfanekiso 3 ubonisa okunye ukucushwa kwezingxenyekazi zekhompuyutha ezijwayelekile zokukhweza isikulufu sephakheji ye-TO KUrediyetha.Amawasha angenalutho, amawasha ezinkanyezi, namawasha amaningi okukhiya okuhlukanisiwe akufanele kusetshenziswe esikhundleni samawasha ase-Belleville njengoba awanikezi ingcindezi eqhubekayo futhi angalimaza isixhasi.
Amanothi omhlangano:
1,Gwema ukusebenzisa iziphikisi zamandla zochungechunge lwe-TO kumihlangano ye-SMT.
I-2, Izingxenyekazi zekhompiyutha zepulasitiki ezithambisayo noma ezinyakazayo emazingeni okushisa aphezulu okusebenza kumele zigwenywe
3, Ungavumeli ikhanda le-screw lithinte i-resistor.Sebenzisa amawasha angenalutho noma amawasha ane-tapered ukuze usakaze amandla ngokulinganayo
4, Gwema izikulufu zensimbi zeshidi, ezivame ukugoqa imiphetho yezimbobo futhi zidale ama-burrs abhubhisayo kurediyetha.
5, Ama-Rivets awanconywa.Ukusebenzisa ama-rivets kunzima ukugcina ingcindezi engaguquki futhi kungalimaza kalula ukupakishwa kwepulasitiki
6,Ungayisebenzisi ngokweqile i-torque.Uma isikulufu siqine kakhulu, iphakheji ingase iphuke ekugcineni kwesikulufu (umkhawulo wokuhola) noma ibe nokuthambekela kokugobela phezulu.Amathuluzi e-pneumatic awanconywa.
Isikhathi sokuthumela: Mar-14-2024
