文档介绍：Signal Integrity
Factors influencing Signal Integrity
2
Studying Factors
 Studied the following factors
 Resin system
 Fabric
 Construction
 Conductor
 Moisture
 Temperature
 Test method

3
Confidential & Proprietary
Resin systems
4
Resin systems
Neat resin electrical performance
Source : IPC EXPO 2009
5
Df (Resin System & RC)

A : bisphenol A novolac system
B : bisphenol A+phenol novolac
C : TUC mid-Tg material
FR4 D : TUC Hi-Tg material
A E : Hi-Tg Dicy-cured system
F : phenol novolac system
B
C
D
Mid-loss G : TUC mid-loss material
Df E
F H : anhydride base mid-loss system
I : BT/Epoxy base system
G
H
I J : TUC low loss material
Low-loss
J

35% 45% 55% 65% 75%
RC
6
Confidential & Proprietary
Mid / Low Loss Materials
0 5 10 15 20 25
0
-1
-2
-3
Low-loss : TU-872 LK
-4
-5
-6
Loss ( dB ) dB ( Loss -7 Anhydride
-8
-9 Dicy Hi-Tg Novolac : TU-862 HF
-10
-11
-12
Trace Length : 4 inch Frequency ( GHz )
• Low Dk resin system could be formulated with modified epoxy to achieve
the desired low loss property patible with FR-4 processing
parameters
7
Confidential & Proprietary
Construction
8
Dk – Construction
1MHz : LCR meter
9
Df – Construction
1MHz : LCR meter
10