FAQ

1.0 What is the capability of Min. Line width and space?

Stardard FR4 PCB design rules.

1.1-What is the Min. Via size?

Machine drilling : min. 0.15mm Laser drilling : Min. 0.1mm

1.2-What is buried via?

Buried via only exist in multi-layer board,  inner layers connection within inner layers.

1.3-What is blind via?

Blind via only exist in multi-layer board,  inner layers connection within outer layers.

1.4-Could you make both buried vias and blind vias in a PCB?

Yes, we could do it.

1.5.1-What are half plated holes?

Half Plated hole is the hole center in the outline center, a half of hole cut out.

1.5.2-What is the Min. size of half plated holes?

PCB capablity of Half Plated hole is 0.5mm in Andwin.

1.5.3-Could you explain which product need to us half plated holes technical?

Half plated holes widely be used in modules, such as Wifi / Blue tooth / 4G /5G / IoT NB LoRa Modules. The modules SMT to main boards.

1.6-What is via in pad technology?

Via in pad is that the via holes in the SMD pad, it is not good at PCB assembly process. General, there are 3 methods to solver it.

1. The Via is 0.3 – 0.6mm, and solder pad is big ( >5times of  Via holes ) , Could use solder mask filled, it is economical. 2. Via is small and the solder pad is small  （ Via in BGA ) Could choose Via filled by resin and plated over or plated over by copper directly. For more detail , please check follow https://www.andwinpcb.com/via-in-pad/

Which PCB raw material we can choose?

Standard FR4

VendormaterialTg ℃Dk(1 Mhz)Dk(1 Ghz)Df(1 Mhz)Df(1 Ghz)
 DOOSAN DS-7408 140 4.5-4.8 4.3 0.015-0.02 0.014
 GOWORLD GW4011 137 4.3 0.017
 ISOLA DE104i 140 4 (2-5 GHz) 0.02 (2GHz) 0.022(5GHz)
 ISOLA FR-254 153 4.3 (2GHz) 4.2 (5GHz) 0.02 (2GHz) 0.022(5GHz)
 ISOLA FR-406 170 4.6 4.29 0.023 0.014
 ITEQ IT140TC 140 4.6 0.016
 KingBoard KB-6160 138 4.4 0.022
 KingBoard KB-6150 133 4.6 0.022
 NAN YA NP-140TL 140±5 4.2-4.4 3.8-4 0.015-0.02 0.012-0.014
 Nelco 4000-6 170 4.3 4.1 (4 2.5 GHz) 0.027 0.022 (2.5 GHz)
 SHENGYI S1141 140 4.6 0.015
ShineMore SM-730Tg140135±5 4.4-4.8 0.018-0.025

High Frenquency-PTEF

VendormaterialTg ℃Dk(1 Mhz)Dk(1 Ghz)Df(1 Mhz)Df(1 Ghz)
 ARLON AD255 2.55 (10GHz) 0.0018 (10GHz)
 ARLON AD350A 3.5 (10GHz) 0.003 (10GHz)
 ARLON DICLAD527 2.4-2.65 2.4-2.65 (10GHz) 0.001 0.0018 (10GHz)
 TACONIC RF-35 >315 3.5 (1.9 GHz) 0.0018 (1.9GHz)
 TACONIC TLX-9 2.5 (10GHz) 0.0019 (10GHz)
 TACONIC TLX-8 2.55 (10GHz) 0.0021 (10GHz)

High Frenquency

VendormaterialTg ℃Dk(1 Mhz)Dk(1 Ghz)Df(1 Mhz)Df(1 Ghz)
 Arlon 25N 3.38 (10GHz) 0.0025 (10GHz)
 Arlon 25FR 3.58 (10GHz) 0.0035 (10GHz)
 RishoKogyo CS-3376B 190-200 3.6 3.4 (10GHz) 0.002 0.004
 Rogers 4003C >280 3.38±0.05 (10GHz) 0.0021 (2.5GHz) 0.0027 (10GHz)
 Rogers 4350B >280 3.48±0.05 (10GHz) 0.0031 (2.5GHz) 0.0037 (10GHz)
 Rogers 4403 >280 3.17±0.05 (10GHz)  0.0047 (10GHz)
 Rogers 4450F >280 3.3 ± 0.05 0.004 (10GHz)
 Rogers 4450b >280 3.54 ± 0.05 0.004 (10GHz)

High Speed material

VendormaterialTg ℃Dk(1 Mhz)Dk(1 Ghz)Df(1 Mhz)Df(1 Ghz)
 ISOLA FR408 180 3.78 0.0112
 ISOLA FR408HR 200-230 3.69 0.0091
 ISOLA FR620i 225 3.58 3.54( 10GHz) 0.0059 0.0071 (10GHz)
 ISOLA GETEK 180 3.6 (2GHz) 0.009 (2GHz)
 Nelco 4000-13 210 3.7 (1-10GHz) 0.009 (2.5-10GHz)
 Nelco 4000-13SI 210 3.4 0.008 (2.5GHz)
 Nelco 4000-13EP 210 3.7 (1-10GHz) 0.009 (2.5GHz)
 Nelco 4000-13EP SI 210 3.4 3.2(2.5-10GHz) 0.008 (2.5GHz)
 Panasonic Megtron6(R-5775(k)) 185 3.7 0.002

No Flow

VendormaterialTg ℃Dk(1 Mhz)Dk(1 Ghz)Df(1 Mhz)Df(1 Ghz)
 Arlon 38N 200 4.25 0.01
 Arlon 47N 130 4.3 0.022
 Arlon 49N 170 4.4 0.025
 ISOLA FR406N 170 4.3 0.025

Halogen free

VendormaterialTg ℃Dk(1 Mhz)Dk(1 Ghz)Df(1 Mhz)Df(1 Ghz)
 DOOSAN DS-7402 150 4.4 0.014
 EMC EM-285 150 4.5 0.01
 EMC EM-370 175 4.5 0.012
 LG CHEM LG-E-481 150-155 4.6-4.8 0.013-0.015
 Panasonic R-1551 148 4.6 0.01
 Panasonic R-1566W 148 4.6 0.01
 SHENGYI S1155 135 4.7 0.01
 SHENGYI S1165 170 4.8 0.007