Ku-247 simba rekudzivirira simba ndeye 100W-150W

Ku-247 simba rekudzivirira reEAK rekugadzira mainjiniya kuti ape yakagadzika transistor-mhando pasuru yeakakwira-simba resistor zvishandiso, simba i100W-150W.
Izvi zvinopikisa zvakagadzirirwa zvikumbiro zvinoda kunyatsojeka uye kugadzikana.Iyo resistor yakagadzirwa nealumina ceramic layer iyo inoparadzanisa iyo resistor element kubva kune inokwira ndiro.

Eak yakaumbwa TO-247 gobvu firimu simba resistor
Ichi chimiro chinopa yakadzika kwazvo yekupisa kupikisa uku uchivimbisa yakakwirira insulation kuramba pakati terminal uye simbi backplane.Nekuda kweizvozvo, izvi zvinopikisa zvine yakaderera inductance, zvichiita kuti dzive dzakakodzera kune yakakwira-frequency uye yakakwirira-kumhanya pulse application.
Kupikisa kunobva ku0.1Ω kusvika 1 MΩ,Kushanda tembiricha yemhando: -55°C kusvika +175°C.
EAK ichagadzirawo michina inodarika izvi zvakatemwa kuti isangane nezvinodiwa nevatengi.EAK magetsi anopikisa anotevedzera ROHS zviyero, achishandisa kumisa-yemahara.
Features:
■100 W simba rekushanda
■ TO-247 pasuru kumisikidzwa
■Kuisa sikiriru imwe chete kunorerutsa kunamira kune singi yekupisa
■Non-Inductive design
■ ROHS inoenderana
■ Zvishandiso zvinoenderana neUL 94 V-0
M3 screw gomo kune radiator.Iyo yakakomberedzwa yakavharirwa inopa dziviriro uye iri nyore kuisa.Non-inductive design, magetsi ega ega.
Application:
■ Terminal kuramba muRF simba amplifier
■ Yakaderera simba pulse load, grid resistor mumagetsi
■ UPS, mabuffers, voltage regulators, load and discharge resistors muCRT monitors

Resistance ranges:0.05 Ω ≤ 1 MΩ (zvimwe zvakakosha pachikumbiro chakakosha)
Resistance Kushivirira: ± 1 0% kusvika ± 1%
Tembiricha Coefficient: ≥ 10 Ω: ± 50 ppm/°C inoratidzwa ku25 °C, ΔR inotorwa pa +105°C
(imwe TCR pachikumbiro chakakosha chezvishoma ohmic kukosha)
Chiyero chesimba: 100 W pa25 ° C pazasi tembiricha yakaderedzwa kusvika 0 W pa175 ° C
Maximum yekushandisa voltage: 350 V , max.500 V pachikumbiro chakakosha
Dielectric simba voltage: 1,800 V AC
Insulation kuramba:> 10 GΩ pa1,000 V DC
Dieletric simba: MIL-STD-202, nzira 301 (1,800 V AC, 60 sec.) ΔR<±(0.15 % + 0.0005 Ω)
Kuremerwa hupenyu:MIL-R-39009D 4.8.13, 2,000 maawa payakayerwa simba, ΔR<±(1.0 % + 0.0005 Ω)
Kuramba kwehunyoro: -10 ° C kusvika +65 ° C, RH > 90 % kutenderera 240 h, ΔR<±(0.50 % + 0.0005 Ω)
Thermalshock:MIL-STD-202, nzira 107, Cond.F, ΔR = (0.50 % + 0.0005Ω) max
Kushanda tembiricha: -55°C kusvika +175°C
Terminalstrength:MIL-STD-202, nzira 211, Cond.A (Dhonza Muedzo) 2.4 N, ΔR = (0.5 % + 0.0005Ω)
Vibration, high frequency: MIL-STD-202, nzira 204, Cond.D, ΔR = (0.4 % + 0.0005Ω)
Mutobvu zvinhu: mhangura yakabikwa
Torque: 0.7 Nm kusvika 0.9 Nm M4 uchishandisa M3 screw uye compression wahser mounting maitiro
Kupisa kupisa kune inotonhorera ndiro: Rth< 1.5 K/W
Kurema:~4g

Chikumbiro Chekushandisa cheRadiator Mounted Power firimu resistors
Ziva tembiricha uye chiyero chesimba:

Mufananidzo 1-kunzwisisa tembiricha uye chiyero chesimba
Kusangana kwezvinhu zvinopisa kupisa:
1,Pane gaka nekuda kwekuchinja kwenzvimbo yekubatanidza pakati peresistor package neradiator.Aya ma voids anozodzikisa zvakanyanya kuita kweTO-mhando michina.Nokudaro, kushandiswa kwezvinhu zvinopisa zvekugadzirisa kuzadza aya mapeji emhepo kwakakosha zvikuru.Zvinhu zvinoverengeka zvinogona kushandiswa kudzikisa kupisa kwekupisa pakati peanopikisa uye redhiyeta pamusoro.
2, Heat-conducting silicone girisi musanganiswa wezvimedu zvinoitisa kupisa uye zvinwiwa zvinosangana kuita kuwirirana kwakafanana nekwegirisi.Mvura iyi inowanzova mafuta esilicone, asi ikozvino kune yakanaka "Non-silicon" inopisa conductive silicone girisi.Thermally conductive silicone resins yave ichishandiswa kwemakore mazhinji uye kazhinji ine yakaderera kupisa kwekudzivirira kune ese anowanikwa thermally conductive zvinhu.
3,Magetsi anoitisa kupisa anotsiva kupisa-kuitisa silicone uye anowanikwa kubva kune vakawanda vanogadzira.Aya mapadhi ane pepa kana pre-akachekwa chimiro uye akagadzirirwa akasiyana-siyana akajairwa mapakeji akadai TO-220 uye To-247.Iyo inopisa conduction gasket chinhu chine spongy, chinoda kudzvanywa kweunifomu uye kushanda kwakasimba kuti ugone kushanda zvakajairika.
Kusarudzwa kwe Hardware components:
Yakakodzera Hardware chinhu chakakosha kutariswa mune yakanaka kutonhora dhizaini.Iyo Hardware inofanirwa kuchengetedza yakasimba uye yakafanana kudzvanywa pamidziyo kuburikidza nekupisa bhasikoro pasina kukanganisa radiator kana zvishandiso.
Vazhinji vagadziri vanosarudza kubatanidza iyo DeMint KUTI simba rekudzivirira KUTI redhiyata uchishandisa chitubu clip panzvimbo yekusangana sikuru.Aya maturiko echitubu anowanikwa kubva kune akati wandei evagadziri vanopa akawanda akajairwa zvitubu uye ma radiator akagadzirirwa zvakananga kukwirisa clip mu TO-220 uye To-247 mapakeji.Chitubu chinosungirirwa chine zvakawanda zvakanaka zviri nyore kuunganidza, asi chikuru chakanakira ndechekuti chinogara chichishandisa simba rakanakisa pakati pesimba rekudzivirira (ona Mufananidzo 2)

Fig. 3-screw uye washer mounting maitiro
Screw Mounting-belleville kana tapered washers anoshandiswa ne screws inzira inoshanda yekubatanidza kune radiator.Belleville washers ane tapered spring washers akagadzirirwa kuchengetedza anogara achimanikidza pamusoro pehupamhi hwekutsauka renji.Gaskets inogona kumira kwenguva refu tembiricha kutenderera pasina kudzvanywa shanduko.Mufananidzo 3 unoratidza mamwe eyakajairwa magadzirirwo ehardware ekumisikidza TO package screw TO the radiator.Plain washers, nyeredzi washers, uye akawanda akapatsanurwa lock washers haafaniri kushandiswa panzvimbo ye Belleville washers sezvo asingapi anogara achikwira kumanikidza uye anogona kukuvadza resistor.
Zvinyorwa zveGungano:
1, Dzivisa kushandisa iyo TO akateedzana magetsi resistors muSMT magungano.
2,Plastiki yekumisikidza Hardware inopfava kana kukambaira patembiricha yepamusoro yekushandisa inofanirwa kudzivirirwa
3, Usarega iyo screw musoro ichibata resistor.Shandisa plain washers kana tapered washers kugovera zvakaenzana simba
4, Dzivisa simbi simbi screws, iyo inowanzomonerera mipendero yemakomba uye kugadzira inoparadza burrs muradiator.
5, maRivets haakurudzirwe.Kushandisa rivets kwakaoma kuchengetedza kusagadzikana uye zvinogona kukuvadza zviri nyore kurongedza epurasitiki
6,Usawedzere torque.Kana sikururu yanyanya kusimba, pasuru yacho inogona kutyoka kumucheto kwekona kwekona (yekugumira kumagumo) kana kuita tsika yekukotama kumusoro.Zvishandiso zvepneumatic hazvikurudzirwe.