92ML
Thermally Conductive MultiLayerable Epoxy
Laminate and Prepreg
Arlon 92ML ceramic filled thermally conductive
multifunctional
epoxy laminate and prepreg
products provide a cost-effective, lead-free solder
compatible, system with enhanced coefficientof thermal conductivity (Tc=2.0 W/m-K) for
multilayer PWB applucation that require thermal
management throughout the board. 92ML hasa UL-94 V0 halogen-free flame retardant systemthat is compliant with ROHS and WEEE andIPC-4101 requirements.

Features:• Thermal Conductivity (Tc) 2.0 W/m-K, 6-8x that of FR-4, reduces
hot-spots and dependence on thermal vias and heat-sinks todissipate heat• Glass Transition Temperature 160°C provides excellent plated throughhole reliability, lead-free solder application• Decomposition temperature >350°C is ideally suited for lead-free solder processing and offers significant improvement over other thermallyconductive laminate materials• Coefficient of Thermal Expansion close to that of Copper andAluminum for planar stability during process• Best-in-class thermal performance with T260 > 60 minutes, T280 > 15
minutes and T300 > 5 minutes.
• Electrical Strength >1000 Volts/mil for use in high power handlingApplications• Engineered for use with metal backing for producing Metal-Clad PCBs
• Meets the flammability requirements of UL-94 V-0• Halogen-free per IPC-4101 specifications• ROHS and WEEE compliant

Typical Applications:• High Brightness LED’s• DC-DC Power Converters• Automotive Electronics• Electronic designs with limited thermal management alternatives

92ML
Typical Properties:
Property

1. Electrical Properties
Dielectric Constant@ 1 MHz@ 1 GHz
Dissipation Factor@ 1 MHz@ 1 GHz
Volume Resistivity
C96/35/90
E24/125Surface Resistivity
C96/35/90
E24/125
Electrical Strength
Dielectric Breakdown
Arc ResistanceDielectric Withstand Voltage (HiPot)
2. Thermal Properties
Glass Transition Temperature (Tg)
DSC
Decomposition Temperature (Td)
Initial
5%T260
T288
T300
CTE (X,Y)CTE (Z)< Tg> Tgz-axis Expansion (50-260ºC)
3. Mechanical Properties
Peel Strength to Copper (1 oz/35 micron)
After Thermal Stress
At Elevated Temperatures
After Process Solutions
Young’s Modulus
Flexural Strength
Tensile Strength
Compressive Modulus
4. Physical Properties
Water Absorption
Specific Gravity
Thermal Conductivity-Z-Axis
Thermal Conductivity - X/Y-Axis
Flammability

Units

Value

Test Method-5.24.9

IPC TM-650 2.5.5.3
IPC TM-650 2.5.5.9-0.013

IPC TM-650 2.5.5.3
IPC TM-650 2.5.5.9

MΩ-cm
MΩ-cm

1.2 x 109
1.5 x 109

IPC TM-650 2.5.17.1
IPC TM-650 2.5.17.1

MΩ
MΩ
Volts/mil (kV/mm)
kVsec
VDC

2.8 x 108
4.4 x 108
>1000
>50>150>5000

IPC TM-650 2.5.17.1
IPC TM-650 2.5.17.1
IPC TM-650 2.5.6.2
IPC TM-650 2.5.6
IPC TM-650 2.5.1
IPC TM-650 2.5.7.2

°C

160

IPC TM-650 2.4.25

°C°C
min
min
min
ppm/°C340
400>60>15>519-20

IPC TM-650 2.3.41
IPC TM-650 2.3.41
IPC TM-650 2.4.24.1
IPC TM-650 2.4.24.1
IPC TM-650 2.4.24.1
IPC TM-650 2.4.41

ppm/°Cppm/°C%

22
175
1.8

IPC TM-650 2.4.24
IPC TM-650 2.4.24
IPC TM-650 2.4.24

lb/in (N/mm)
lb/in (N/mm)
lb/in (N/mm)
Mpsi (GPa)kpsi (MPa)kpsi (MPa)kpsi (MPa)

5.0 (0.88)

IPC TM-650 2.4.8
IPC TM-650 2.4.8.2
IPC TM-650 2.4.8
IPC TM-650 2.4.18.3
IPC TM-650 2.4.4
IPC TM-650 2.4.18.3
ASTM D-695%g/cm3
W/mK
W/mK
class

4.8 (0.84)
2.6 (18)
26.1 (180)
8.7 (60)

0.12
2.223.5
V-0

IPC TM-650 2.6.2.1
ASTM D792 Method A
ASTM E1461
ASTM E1461
UL-94

Results listed above are typical properties, provided without warranty, expressed or implied, and without liability. Properties may vary, depending on design and application. Arlon reserves theright to change or update these values.

Availability:ArlonPart Number

92ML0488
92ML0690
92ML8085

ApproxNominal Press
Notes/
Glass Style
Resin % Thickness (mils) Applications
ArlonNotes/
ApproxNominal Press
Glass 88
Style
104
3.2 % Thickness
Multilayer
Part Number
Resin(mils) Applications

10690
4.2
Multilayer
92ML0488
10488
3.2
Multilayer
1080
85
6.0
Multilayer
92ML0690
10690
4.2
Multilayer
Laminate available in a wide92ML8085
variety of thicknesses with 1/2, 1080
1 or 2 oz copper. Inquire aboutor Brass plate availability.
85 Aluminum, Copper6.0
Multilayer

Recommended Process Conditions:
Process inner-layers through develop, etch, and strip using standard industry practices. Bake inner layers ina rack for 30 minutes at 107°C - 121°C (225°F - 250°F) immediately prior to lay-up. Vacuum desiccate theprepreg for 8 - 12 hours prior to lamination.
Lamination Cycle:
1) Control the heat rise to 5°C - 7°C (9°F - 12°F) per minute between 82°C and 121°C (180°F and 280°F)
2) Starting point laminating pressure for 92ML for standard panel sizes are as follows:
Panel Sizein
12 x 18
18 x 24Pressure

cm Panel Size
psi
30 x 40250-300incm40 12x 61300-350x 1830 x 40
18 x 2440 x 61

kg/cm2 Pressure
17-21psi
kg/cm2
21-24
250-300
17-21300-350

21-243) Product temperature at start of cure = 182°C (360°F).
4) Cure time at temperature = 90 minutes5) Cool down under pressure at ≤ 5°C/min (10°F/min)Drill at 350 SFM. Undercut bits are recommended for vias 0.018” and smaller
De-smear using alkaline permanganate or plasma with settings appropriate for multifunctional epoxy.
Conventional plating processes are compatible with 92ML Standard profiling parameters may be used.
Bake for 2 hours at 121°C (250°F) prior to solder reflow or HASL

*Typical values of thermal conductivity for 92ML0485 are 1.6-1.7 W/mK
Optimal processing requirements may vary depending on specific equipment and operating conditions.
These recommendations are offered only as a starting point.

92ML

Arlon Electronic Substrates… Challenge Us
For samples, technical assistance, customer service or for more
information, please contact Arlon Materials for Electronics Divisionat the following locations:

NORTH AMERICA:

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Microwave Materials
1100 Governor Lea Road
Bear, DE 19701
Tel: (800) 635-9333
Outside U.S. & Canada: (302) 834-2100
Fax: (302) 834-2574

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Little Lever
Bolton, Lancashire BL31QE
United Kingdom
Tel: (44) 120-457-6068
Fax: (44) 120-479-6463

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Room 11/401, No. 8
Hong Gu Road
Shanghai, China 200336
Tel/Fax: (86) 21-6209-0202
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Arlon LLC
6 cours des Juilliottes
94700 Maisons-Alfort France
Phone : (33) 1 84 23 41 51
Fax: (33) 9 55 62 43 26

www.arlon-med.com
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