1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2003 07 24 Revised Para 3.0 inserted; Para 3.1, 3.2, 3.3, 3.6, 3.7, 4 deleted 1993 02 11 NGA1E10269419001 Revised 3.5.8, updated 3.7 R. Gordon 1991 04 26 Released J.B. Huebner Printed copies are uncontrolled Copyright 2003, Ford Global Technol
2、ogies, Inc. Page 1 of 3 LAMINATE, COMPOSITE SUBSTRATE, UNCLAD WSF-M99L17-A2 EPOXY GLASS, SELF-EXTINGUISHING LAMINATE, COMPOSITE SUBSTRATE, UNCLAD WSF-M99L17-A3 EPOXY PAPER, SELF-EXTINGUISHING LAMINATE, COMPOSITE SUBSTRATE, UNCLAD, WSF-M99L17-A4 POLYESTER GLASS, SELF-EXTINGUISHING 1. SCOPE The materi
3、als defined by these specifications are epoxy/glass or epoxy/paper, unclad laminates which are flame resistant and capable of being additively copper plated. 2. APPLICATION These specifications were released originally for materials used in fabricating single and double sided printed circuit boards
4、for electronic modules using additive copper plating. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 CONSTRUCTION 3.4.1 WSF-M99L17-A2 The compos
5、ite substrate shall consist of laminated sheets of woven glass impregnated with fire retardant epoxy as specified by ASTM D 709, type IV, Grade FR-4. 3.4.2 WSF-M99L17-A3 The composite substrate shall consist of laminated sheets of cellulosic paper impregnated with fire retardant epoxy as specified b
6、y ASTM D 709, Type I, Grade FR-3. 3.4.3 WSF-M99L17-A4 The composite substrate shall consist of laminated sheets of non-woven glass impregnated with fire retardant polyester as specified by ASTM D 1867, Type IV, Grade FR-6. 3.4.4 Dimensional A2 A3 A4 Thickness, mm 1.47 +/- 0.13 1.40 +/- 0.13 1.40 +/-
7、 0.13 ENGINEERING MATERIAL SPECIFICATIONWSF-M99L17-A2/A3/A4Printed copies are uncontrolled Copyright 2003, Ford Global Technologies, Inc. Page 2 of 3 3.4.5 Panel Size ( A2, A3, & A4) Length tolerance +/- 1.57 mm Width tolerance +/- 0.79 mm 3.4.6 Dimensional Stability, mm/mm change 0.0002 0.0006 0.00
8、06 (Between holes after conditioning for 1 hr at 160 +/- 2 C 3.4.7 Bow and Twist, mm/mm, max (IPC TM-650, Method 2.4.22) As received 0.007 0.007 0.008 After conditioning for 1h at 160 +/- 2 C 0.008 0.008 0.010 3.5 ORIGINAL PROPERTIES 3.5.1 Flexural Strength, min MPa (ASTM D790) Longitudinal 412.0 13
9、7.3 137.9 Transverse 343.4 110.0 151.7 3.5.2 Surface Resistivity, min, ohms/cm (ASTM D 257) As received 1E11 1E10 1E12 After conditioning for 96 h at 35 +/- 2 C and 90% R.H. 1E10 1E9 1E11 3.5.3 Volume Resistivity, min, ohms/cm (IPC TM-650, Method 2.5.17.1) As received 1E12 1E11 1E13 After conditioni
10、ng for 96 h At 35 +/- 2 C and 90% R.H. 1E11 1E10 1E12 3.5.4 Solder Float Resistance (A2, A3, A4) (IPC AM-361, Method 4.7.5) As received No delamination, blistering, crazing, measling, or burning After conditioning for 15 s No delamination, blistering, crazing, At 260 +/- 3 C on solder measling, or b
11、urning bath ENGINEERING MATERIAL SPECIFICATIONWSF-M99L17-A2/A3/A4Printed copies are uncontrolled Copyright 2003, Ford Global Technologies, Inc. Page 3 of 3 A2 & A3 A4 3.5.5 Surface Roughness, min 0.64 m N/A (ANSI/ASME B 46.1) 3.5.6 Platability (A2 & A3) The laminate will be compatible with CC-4 addi
12、tive copper plating. The laminate shall not leach contaminants into the CC-4 additive copper bath which adversely affects the quality of the plating deposit. Laminate panels additively plated shall not have voids in the copper plating on the surface or through holes as measured by micro section. 3.5
13、7 Water Absorption, max, % weight 0.25 0.65 0.4 (NEMA LI-1989, Method 8.15) 3.5.8 Volatile Content, max, % weight 0.3 3.5 0.8 Test Method: Heat laminate to 260 +/- 3 C at a rate of 5 C/minute using thermogravimetry in an atmosphere of dry nitrogen gas at a flow rate of 10 cc/minute. 3.5.9 Flammabil
14、ity (ISO 3795) Burn Rate, max 100 mm/minute 3.5.10 Pits and Dents, max (Per 1860 cm2panel, IPC-TM-650 Method 2.1.5 Number 50 Largest dimension, max 0.13 mm Depth, max 0.08 mm 3.5.11 Scratches (Per 1860 cm2panel) Number, max 50 Depth, max 0.05 mm 5. GENERAL INFORMATION The information below is provid
15、ed for clarification and assistance in meeting the requirements of this specification. 5.1 GLASS TRANSITION TEMP, C 120 55 75 (ASTM D 3418) 5.2 DECOMPOSITION TEMPERATURE, C 300 260 290 (TBD) 5.3 DIELECTRIC CONSTANT, max 5.4 4.8 4.0 (ASTM D 150) 5.4 DISSPATION FACTOR, max 0.035 0.040 0.019 (ASTM D 150)
