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Aratohu Hoahoa PCB Ngāwari (2025): Aratohu Tohunga ki te Piko, te Whakatakoto me ngā Rauemi
2025-07-03
I hangaia mō Te pono i roto i ngā Taupānga Hihiri
Ngā Tirohanga Matua: 78% o ngā rahunga o te PCB piko i ahu mai i ngā takahi i te radius piko (raraunga pono o te IPC). Kei roto i tēnei aratohu ngā otinga hangarau mō ngā tono tino nui.
1. Te Whakamātau i te Piko o te PCB Ngāwari: Ngā Ture Hoahoa Tūmau me ngā Ture Hoahoa Hihiri
Te Whakawehewehenga Arohaehae
- Pūmau (Piko-ki-te-Tāuta):
- Hihiri (Ngāwari Tonu): >100,000 huringa (hei tauira, ngā hononga karetao)
Ngā Tātaitanga o te Pūtoro Piko (Mō ia IPC-2223)
| Ngā Paparanga | Matotoru Katoa (mm) | Pūtoro Iti Pūmau | Pūtoro Iti Hihiri |
|---|---|---|---|
| 1 | 0.15 | 1.5mm (ōwehenga 10:1) | 15mm (ōwehenga 100:1) |
| 2 | 0.25 | 2.5mm | 37.5mm |
| 4+ | 0.50 | 10mm (ōwehenga 20:1) | Kāore i te tūtohutia |
Ngā Whakaritenga Hoahoa
- Te Arataki i te Ara: Kia poutū tonu ki te tuaka piko (90°=mōrearea rahunga↑ 300%)
- Arotautanga Tuaka Kūpapa: Whakatakotoria ngā tohu
- Te Maimoatanga Parahi: Whakamahia te parahi kua hurihia kua whakamahanatia (ngāwari > te electrodeposited)
- Āraia i ngā Rohe Piko: Ngā ara PTH, ngā wāhanga, ngā koki 90°
⚠️ Tino Hiranga: Ko te takahi i te radius piko te take o te 78% o ngā rahunga o te mara. Me whakauru tonu te 20% o te tawhē haumaru ki tua atu i ngā iti rawa IPC.
2. Pūtaiao Rauemi: Te Matū Mahi Polyimide vs FR4
Te Whakataurite i ngā Āhuatanga Hiko-ā-Iwi
| Taonga | FR4 (Pōkeke) | Polyimide (Flex) | Pānga ki te Hoahoa |
|---|---|---|---|
| Dk @ 1GHz | 4.5 | 3.2 | Te ngaronga tohu iti iho |
| Tg (°C) | 130-180 | >250 | Te pumau wera teitei ake |
| CTE (ppm/°C) | 14-18 | 12-15 | Te whakaiti i te piko |
| Te mimiti makuku | 0.8% | 2.8% | Me tunua i mua |
Aratohu Kōwhiringa Parahi
- Ngāwari Hihiri: Cu hurihuri kua whakawerahia (whakaroa >15%)
- Auautanga-Teitei: Konumohe iti-kōtaha kua tukatukahia whakamuri
- Au-Tiketike: 2oz+ parahi me te whakakaha polyimide
3. Tahora me te Ara: Ngā Tikanga Matatau
Mā te Kawa Hoahoa
- Ngā Rohe Piko: Kāore he vias i roto i te 3x te matotoru o te papa i te rārangi piko.
- Ngā Maikorovia Whakatakotoranga: Whakamahia ngā vias taiaho 0.1mm ki ngā wāhi kiato nui
- Ngā Pūwero Whakapūmau: Tāpirihia ngā roimata ki ngā hononga papa-aro (te ahotea ↓ 40%)
Tikanga Whakahaere Ārai Ārai
# Tātai Āraitanga Raina-Rārangi (IPC-2141A) Z₀ = (87/√(εᵣ+1.41)) * ln(5.98H/(0.8W+T)) # Kei hea: # H = matotoru ā-hiko # W = whānui ā-ira # T = matotoru ā-ira # εᵣ = pūmau ā-hikoNgā Kōwhiringa Parenga EMI
| Momo | Te Whai Huatanga | Ngāwari | Utu |
|---|---|---|---|
| Parahi Totoka | ★★★★☆ | ★☆☆☆☆ | Teitei |
| Whakawhiti-Hate (60%) | ★★★☆☆ | ★★★★☆ | Waenga |
| Epoxy Hiriwa | ★★☆☆☆ | ★★★★★ | Iti |
4. Hanganga Whakarārangi: 4 Whirihoranga Hira
Pūmau-Ngāwari-Pono Teitei
Pūmau Runga (FR4): Ngā Wāhanga ↓ Matua Ngāwari Prepreg (25μm PI + 18μm Cu) ↑ Pūmau Raro Prepreg (FR4): Ngā Hononga Mā te hanganga taurite ka ārai i te piko (kāore i te ōrite te CTE
Tikanga Pupuri Pukapuka
- Ka taea te piko 180° i roto i te piko maha-paparanga
- Wehenga paparanga: 0.1mm ngā āputa hau
- Te utu tāpiri: 35-40%
Rangahau Take e Whakahaerehia ana e te Āraitanga
- Raruraru: He takirua rerekētanga 100Ω i roto i te piko 4-apa
- Otinga:
- Ngā paparanga tohu: ngā tohu 0.1mm
- Whakakorehiko: 50μm polyimide (εᵣ=3.2)
- Wehenga papa whenua: 0.2mm
- Hua: ±7% te manawanui i tutuki
5. Anga Whakatutukitanga IPC
Te Aromatawai Paerewa
kauwhata TD A[IPC-2221] --> B[Hoahoa Whānui] A --> C[IPC-2223] --> D[Ngāwari/Ngāwari-Pūmau] D --> E[Ngā Rauemi] D --> F[Te Wāhi o te Arataki] D --> G[Ngā Tauwehenga Piko] H[IPC-6013] --> I[Ngā Whakamātautau Tohu] I --> J[Te Pahikara Wera] I --> K[Te Manawanui Piko] Ngā Kawa Whakamātautau Tino Hira
- Ngāwari Hihiri: 10,000 huringa @ 20mm te whānui (IPC-TM-650 2.4.3)
- Te Ru Wera: -55°C ↔ 125°C, 100 huringa (JESD22-A104)
- Te Parahanga Ionic:
6. Ngā Ārai Utu me te Wātaka
Te Matatini Uauatanga Hanga
| Tauwehenga | Pānga Utu | Pānga o te Wā Arataki |
|---|---|---|
| Tau o te Papa >6 | +40-60% | +5 ngā rā |
| Kikī ake i te 4/4mil | +25% | +3 ngā rā |
| Āraitanga Whakahaeretia | +15-20% | +2 ngā rā |
| Tiwhikete Hōia | +100% | +14 ngā rā |
Rautaki Whakaiti Wā Arataki
- Whakamahia te matotoru polyimide paerewa (25μm/50μm)
- Āta karohia ngā whakatuwheratanga hipoki ritenga
- Whakaratohia ngā tauira ārai i te tīmatanga
7. Rārangi Arowhai Kōwhiringa Kaihanga
Aromatawai Kaihoko 20-Tohu
- Tiwhikete IPC-6013 Akomanga 3
- Te rarangi parahi kua hurihia kua whakawerahia
- Te kaha keri taiaho (
- Whakamātautau ārai me te TDR
- Ngā taputapu whakamātautau ngāwari hihiri
- Huihuinga rūma ma (Akomanga 8)
- Ngā kōwhiringa whakakeke e rite ana ki te CTE
- Taiwhanga tātari rahunga i te papaanga
✦ Paearu Ahumahi: Ka eke ngā kaihanga matua ki te reiti hapa
Ngā Utauta Hoahoa Taunekeneke
Tātaitai Pūtoro Piko
Rmeneti = K × (Tau o ngā Paparanga)1.5 × Matotoru Katoa
Ko K=12 (pūmau) 120 rānei (hihiri)
Nomograph Whānui o te Arataki
Tūhurahia Ētahi Atu Mō Te Hoahoa me Te Hanga PCB Flex
- ·Ngā Ratonga Hanga me te Huihuinga PCB Flex – He tirohanga whānui ki ngā tukanga whakaputa me ngā āheinga.
- ·Aratohu Hoahoa PCB Ngāwari – Ngā tikanga pai mō te tahora, te whakarārangi, me te whakahaere ārai mate.
- ·Ngā Utu me ngā Take Whakatau mō te PCB Flex – Kia mārama ki ngā āhuatanga e akiaki ana i ngā utu me pēhea te whakapai ake i tō tahua.
- ·Kōwhiringa Rauemi PCB Ngāwari – He tirohanga ki te LCP, te PI, ngā momo piripiri, me ngā pepa parahi.
- ·PCB Flex me Rigid-Flex: Ko tēhea te mea hei whiriwhiri? – Te whakataurite hangarau me te utu mō te whakatau pai ake.
🌐 Ngā Rauemi Pono me ngā Paerewa Ahumahi
- ·Ngā Paerewa IEEE mō te Hoahoa PCB Tere-Tiketike – He tohutoro mō ngā aratohu mō te pono o te tohu me te ārai i te pānga.
- ·Paerewa IPC-6013 mō ngā Ara Hāora Ngāwari – Ngā paearu whai mana me te whakaae mō ngā ara iahiko ngāwari.
- ·Rangahau Mākete Prismark – Ngā matapae me ngā tirohanga whānui mō te mākete hikohiko ngāwari.
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