VT-4A Aluminum Base Laminate/Prepreg

UL Approval: E214381 Version: B5 11/09/2017

General Information

  • VT-4A1 / VT-4A1 PP: Thermal Conductivity - 1.6W/mK, MOT 90℃
  • VT-4A2 / VT-4A2 PP: Thermal Conductivity - 2.2W/mK, MOT 90℃
  • VT-4A2H / VT-4A2H PP: Thermal Conductivity - 2.2W/mK, MOT 105℃
  • Excellent Electrical and Mechanical Characteristics
  • Flammability UL94 V0

Application

  • Ultra bright LED Substrate
  • Power Conversion
  • PDP, LED, Regulator for TV
  • Monitor Drives
  • Rectifier, Power Supply

Storage Condition & Shelf Life

Prepreg Laminate
Storage Condition Temperature < 23℃ (73℉) < 5℃ (41℉) Room
Relative Humidity < 55% / /
Shelf Life 3 Months 6 Months 24 Months

The RCC & RCF exceeding shelf life should be retested.

Designation of IMS Laminate

171002-VT-4A-New-Designation.jpg

Laminate Properties

Item Test Method (IPC-TM-650) Unit VT-4A1 VT-4A2 VT-4A2H
75um 100um 125um 150um 75um 100um 125um 150um 75um 100um 125um 150um
Thermal Conductivity ISO 22007-2 W/m*K 1.6 2.2 2.2
Thermal Impedance ISO 22007-2 ℃*in2/W 0.074 0.099 0.123 0.148 0.054 0.072 0.089 0.107 0.054 0.072 0.089 0.107
Tg DSC 2.4.25 130 130 130
Td TGA ASTM D3850 380 380 380
Thermal Stress Solder Dip @ 288℃ 2.4.13.1 Minute >=5 >=5 >=5
Hi-Pot Withstand DC 2.5.7.2 V 4500 5000 6000 8000 4500 5000 6000 8000 4500 5000 6000 8000
Breakdown Voltage AC 2.5.6.3 V 6000 7500 9000 10000 6000 7500 9000 10000 6000 7500 9000 10000
Dk @ 1MHz C-24/23/50 2.5.5.3 - 5.0 5.1 5.1
Df @ 1MHz C-24/23/50 2.5.5.3 - 0.015 0.014 0.014
Volume Resistance After Moisture 2.5.17.1 MΩ-cm 4.5E+8 5.1E+8 5.1E+8
E-24/125 2.3E+7 3.1E+7 3.1E+7
Surface Resistance After Moisture 2.5.17.1 2.2E+7 2.3E+7 2.3E+7
E-24/125 5.1E+6 5.2E+6 5.2E+6
Peel Strength (1oz) As received 2.4.8 Lb/in 12 12 12
CTI As received ASTM D3638 V 600 600 600
Flammability As received UL94 Rating V0 V0 V0
RTI Electric UL94 90 90 105
Mechanical UL94 90 90 105

All test data provided are typical values but not intended to be specification values.

Availability

Laminate

Item Availability
Dielectric .003" (75um), .004" (100um), .005" (125um), .006" (150um), .008" (200um)
Standard Size Imperial 18*24, 20*24, 21*24, 18*48, 20*48, 21*48
Metric 457*610, 508*610, 533*610, 457*1220, 508*1220, 533*1220
Copper weight Hoz, 1oz, 2oz, 3oz, 4oz, 6oz, 10oz
Aluminum thickness 0.6mm, 0.8mm, 1.0mm, 1.2mm, 1.5mm, 2.0mm, 3.0mm
Aluminum Alloy 1100, 5052, or as required

Prepreg

Product Pressed Thickness (um) Glass Fabric Application
VT-4A1 75 106 Circuit Clearance Fill
100 1080 Circuit Clearance Fill
125 1080 Hole Fill
VT-4A2 VT-4A2H 75 106 Circuit Clearance Fill
100 1080 Circuit Clearance Fill
125 1080 Hole Fill

Protective Film for Aluminum Plate

Type Material Max Operation Temperature
Standard PET 170℃
High Temperature Polyimide 270℃

Aluminum and Aluminum Alloy Information

Major Chemical Composition

Alloy Code Composition Alloy Code Composition
1100 Al, Si, Fe, Cu, Zn, Mn 5052 AL, Mg, Fe, Si, Cr, Cu, Zn
3003 Al, Mn, Si, Fe, Cu, Zn 6061 Al, Mg, SI, Fe, Cr, Cu, Zn, Ti, Mn

Calorific & Electrical Performance

Alloy Melting Point Range (℃) CTE (ppm/℃) Cp (J/g-℃) Thermal Conductivity (W/m-K) Resisitivity (Ω-cm)
20~100℃ 20~300℃
1100 643~657.2 23.6 25.5 0.904 220 3.00E-6
3003 643~654 23.2 25.1 0.893 163 4.16E-6
5052 607.2~649 23.8 25.7 0.880 138 4.99E-6
6061 582~651.7 23.6 25.3 0.896 167 3.99E-6

Mechanical Performance

Alloy Hardness (HB) Ultimate Tensile Strength (MPa) Tensile Yield Strength (MPa) Elongation at Break 1.6mm (%) Elastic Modulus (GPa) Poisson Ratio Fatigue Strength (MPa) Shear Modulus (GPa) Shear Strength (MPa)
1100H24 32 124 117 9 68.9 0.330 48.3 26.0 75.8
3003H24 40 152 145 8 68.9 0.330 62.1 25.0 96.5
5052H32 68 262 214 10 70.3 0.330 124 25.9 145
6061T6 95 310 276 12 68.9 0.330 96.5 26.0 207

*Number of cycles: 5.0E+8

Download Datasheet