Zopangira Zopangira Mabala a Laser Diode: Mlatho Wovuta Pakati pa Kuchita ndi Kudalirika

Popanga ndi kupanga ma laser a semiconductor apamwamba kwambiri, mipiringidzo ya laser diode imakhala ngati mayunitsi opangira magetsi. Kuchita kwawo sikungotengera mtundu wamkati wa tchipisi ta laser komanso kwambiri pakuyika. Pakati pazigawo zosiyanasiyana zomwe zimaphatikizidwa pakuyika, zida za solder zimagwira ntchito yofunika kwambiri ngati mawonekedwe amafuta ndi magetsi pakati pa chip ndi sink ya kutentha.

1. Udindo wa Solder mu Mabala a Laser Diode

Mipiringidzo ya laser diode nthawi zambiri imaphatikizira zotulutsa zingapo, zomwe zimapangitsa kuti pakhale kachulukidwe kamphamvu komanso zofunikira pakuwongolera kutentha. Kuti mukwaniritse kutentha bwino komanso kukhazikika kwadongosolo, zida za solder ziyenera kukwaniritsa izi:

① High matenthedwe madutsidwe:

Imawonetsetsa kusuntha kwabwino kwa kutentha kuchokera ku chipangizo cha laser.

② Kunyowa kwabwino:

Amapereka mgwirizano wolimba pakati pa chip ndi gawo lapansi.

③ Malo osungunuka oyenerera:

Imalepheretsa kusefukira kapena kuwonongeka pakakonzedwa kapena kugwira ntchito motsatira.

④ Coefficient yogwirizana ya kukula kwamafuta (CTE):

Amachepetsa kupsinjika kwa kutentha pa chip.

⑤ Kukana kutopa kwabwino:

Imatalikitsa moyo wautumiki wa chipangizocho.

2. Common Mitundu Solder kwa Laser Bar ma CD

Zotsatirazi ndi mitundu itatu ikuluikulu ya zida zogulitsira zomwe zimagwiritsidwa ntchito popaka mipiringidzo ya laser diode:

①Gold-Tin Alloy (AuSn)

Katundu:

Eutectic yopangidwa ndi 80Au/20Sn yokhala ndi malo osungunuka a 280 ° C; mkulu matenthedwe madutsidwe ndi mphamvu makina.

Ubwino:

Kukhazikika kwapamwamba kwambiri kutentha, moyo wautali wotentha wotentha, wopanda kuipitsidwa ndi organic, kudalirika kwakukulu

Mapulogalamu:

Military, aerospace, ndi makina apamwamba a laser mafakitale.

②Pure Indian (Mu)

Katundu:

Kusungunuka kwa 157 ° C; chofewa komanso chosinthika kwambiri.

Ubwino:

Kuthamanga kwapang'onopang'ono kwapamwamba kwambiri, kutsika kwapang'onopang'ono pa chip, koyenera kuteteza nyumba zosalimba, zoyenera kugwirizana ndi kutentha kochepa.

Zolepheretsa:

Kuchuluka kwa okosijeni; amafuna inert mpweya pa processing, m'munsi mawotchi mphamvu; si abwino kwa ntchito zolemetsa kwambiri

③Ma Composite Solder Systems (mwachitsanzo, AuSn + In)

Kapangidwe:

Nthawi zambiri, AuSn imagwiritsidwa ntchito pansi pa chip polumikizira mwamphamvu, pomwe In imayikidwa pamwamba pakuwonjezera kutentha.

Ubwino:

Zimaphatikiza kudalirika kwakukulu ndi mpumulo wa kupsinjika, kumathandizira kukhazikika kwapang'onopang'ono, kumasinthasintha bwino ndi malo osiyanasiyana ogwirira ntchito.

3. Zotsatira za Solder Quality pa Chipangizo Magwiridwe

Kusankhidwa kwa zinthu za Solder ndikuwongolera njira kumakhudza kwambiri magwiridwe antchito a electro-optical komanso kukhazikika kwanthawi yayitali kwa zida za laser:

Pansi pa ntchito yamphamvu yopitilira mphamvu, ngakhale zolakwika zazing'ono pakugulitsa zimatha kupangitsa kuti matenthedwe apangidwe, zomwe zimapangitsa kuwonongeka kwa magwiridwe antchito kapena kulephera kwa chipangizocho. Chifukwa chake, kusankha solder wapamwamba kwambiri ndikugwiritsa ntchito njira zogulitsira zolondola ndizofunikira kwambiri kuti mukwaniritse ma CD odalirika a laser.

4. Zochitika Zamtsogolo ndi Chitukuko

Pamene matekinoloje a laser akupitilira kulowa m'mafakitale, maopaleshoni azachipatala, LiDAR, ndi magawo ena, zida zogulitsira zopangira ma laser zikuyenda motere:

①Kutentha kotsika:

Kuti muphatikizidwe ndi zida zomwe zimakhudzidwa ndi kutentha

②Solder wopanda lead:

Kukwaniritsa RoHS ndi malamulo ena achilengedwe

③High-performance thermal interface materials (TIM):

Kuti muchepetse kukana kwamafuta

④Tekinoloje ya Micro-soldering:

Kuthandizira miniaturization ndi kuphatikiza kwapamwamba kwambiri

5. Mapeto

Ngakhale zazing'ono, zida za solder ndizolumikizira zofunika kwambiri zomwe zimatsimikizira kugwira ntchito ndi kudalirika kwa zida zamphamvu za laser. Poyika mipiringidzo ya laser diode, kusankha solder yoyenera ndikuwongolera njira yolumikizira ndikofunikira kuti mukwaniritse ntchito yayitali yayitali.

6. Za Ife

Lumispot yadzipereka kupatsa makasitomala zida zaukadaulo komanso zodalirika za laser ndi mayankho amapaketi. Pokhala ndi chidziwitso chochulukirapo pakusankha zinthu za solder, kasamalidwe ka matenthedwe, komanso kuwunika kodalirika, timakhulupirira kuti kuwongolera kulikonse mwatsatanetsatane kumapereka njira yopambana. Kuti mumve zambiri paukadaulo wapamwamba kwambiri wamapaketi a laser, omasuka kulumikizana nafe.