45N
MULTIFUNCTIONAL EPOXY LAMINATE AND PREPREG
Arlon 45N is a tough, high Tg (175°C by DSC) multifunctional
epoxy laminate and prepreg system designed for use in avariety of higher layer count MLB’s. Processeable using
conventional FR-4 conditions, 45N is supplied to meet therequirements of IPC-4101/24.
Features:• High Tg by DSC (175°C)• Resists barrel cracking and inner layer copper cracking
during fabrication• Resistant to Measling and Solder shock Defects• UL-94 VO• RoHS/WEEE Compliant• Suitable for most Lead-Free applications

Typical Applications:• Automotive Under-hood applications• Backplanes and Mother Boards• Ball Grid Array Packaging• High layer count MLB’s

Typical Properties:
Property

45N
Units

Value

Test Method-4.2 to 4.6

IPC TM-650 2.5.5.3
IPC TM-650 2.5.5.9-0.025

IPC TM-650 2.5.5.3
IPC TM-650 2.5.5.9

MΩ-cm
MΩ-cm

2.6 x 107
3.3 x 107

IPC TM-650 2.5.17.1
IPC TM-650 2.5.17.1

MΩ
MΩ
Volts/mil (kV/mm)
kV
sec

4.0 x 104
2.9 x 107
1500
65

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

175

IPC TM-650 2.4.24
IPC TM-650 2.4.25

1. Electrical Properties
Dielectric Constant (may vary with Resin %)@ 1 MHz@ 1 GHz
Dissipation Factor@ 1 MHz@ 1 GHz
Volume Resistivity
C96/35/90
E24/125
Surface Resistivity
C96/35/90
E24/125
Electrical Strength (typical)
Dielectric Breakdown
Arc Resistance2. Thermal Properties
Glass Transition Temperature (Tg)
TMA
DSC°C°C

Decomposition Temperature (Td)
Initial
5%
T260
T288
T300
CTE (x,y)CTE (z)< Tg°C°Cminminmin
ppm/°C

14 - 16

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/°C55

IPC TM-650 2.4.24> Tg

ppm/°CIPC TM-650 2.4.24%

200
2.4lb/in (N/mm)
lb/in (N/mm)

88

IPC TM-650 2.4.8
IPC TM-650 2.4.8.2lb/in (N/mm)

8

IPC TM-650 2.4.8

Young’s Modulus
Flexural Strength
Tensile Strength

Mpsi (GPa)kpsi (MPa)kpsi (MPa)2.8

IPC TM-650 2.4.18.3
IPC TM-650 2.4.4
IPC TM-650 2.4.18.3Compressive Modulus
Poisson’s Ratio (x, y)

kpsi (MPa)-0.2

ASTM D-695
ASTM D-3039

Water Absorption
Specific Gravity

%
g/cm3

0.1
1.85

IPC TM-650 2.6.2.1
ASTM D792 Method A

Thermal Conductivity

W/mK

0.25

ASTM E1461

Flammability

ClassV0UL-94

z-axis Expansion (50-260ºC)

IPC TM-650 2.4.24

3. Mechanical Properties
Peel Strength to Copper (1 oz/35 micron)
After Thermal Stress
At Elevated Temperatures
After Process Solutions

4. Physical Properties

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
the right to change or update these values.

Availability:Arlon Part
NumberGlass Style

Resin %

Scaled Flow
Hf (mils)

Scaled Flow
H (mils)

45N0675106

75 ± 3

1.8 ± 0.3

0.55 ± 0.20

45N80651080

65 ± 32.4 ± 0.3

0.55 ± 0.20

45N23552313

55 ± 33.4 ± 0.30.55 ± 0.20

45N26502116

50 ± 33.9 ± 0.30.55 ± 0.20

45N28427628

42 ± 36.8 ± 0.3

0.55 ± 0.20Recommended Process Conditions:
Process inner-layers through develop, etch, and strip using standard industry practices. Usebrown oxide on inner layers. Adjust dwell time in the oxide bath to ensure uniform coating.
Bake inner layers in a rack for 60 minutes at 225°F - 250°F (107°C - 121°C) immediately
prior to lay-up. Vacuum desiccate the prepreg for 8 – 12 hours prior to lamination.
Lamination Cycle:
1)

Pre-vacuum for 30 minutes

2)

Control the heat rise to 8°F - 12°F (4°C - 6°C) per minute between 130°F and 230°F (55°C and110°C)
Panel Size

Pressureincm

psikg/sq cm

12 x 1840 x 46275

1916 x 18

30 x 46350

2518 x 24

46 x 61400283)

Product temperature at start of cure = 360°F (180°C).

4)

Cure time at temperature = 90 minutes

5)

Cool down under pressure at ≤ 12°F/min (6°C/min)

45N
Optimal processing requirements may vary depending on specific equipment and operating conditions. These recommendations are offered only as a starting point.

North America:
9433 Hyssop Drive, Rancho Cucamonga, California 91730
Tel: (909) 987-9533 • Fax: (909) 987-8541
1100 Governor Lea Road, Bear, Delaware, 19701
Tel: (302) 834-2100, (800) 635-9333
Fax: (302) 834-2574
Northern Europe:
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Tel/Fax: (44) 120-457-6068
Southern Europe:
1 Bis Rue de la Remarde, 91530 Saint Cheron, France
Tel: (33) 871-096-082 • Fax: (33) 164-566-489
Arlon Material Technologies
No. 20 Datong Road, Export Processing Zone, Suzhou New & High District, Jiangsu, China
Tel (86) 512-6269-6966
Fax: (86) 512-6269-6038
Arlon Electronic Materials (Suzhou) Co., Ltd.
Building 7, Da Xing Industrial Park of Suzhou New & High District
Jinangsu, China 21500
Tel: (86) 512-6672-1698
Fax: (86) 512-6672-1697
Eastern China:
Room 11/401, No. 8, Hong Gu Road, Shanghai, China, 200336
Tel/Fax: (86) 21-6209-0202
Southern China:
Room 601, Unit 1, Building 6, Liyuanxincun, Road Holiday,
Hua qiaocheng, Nanshan District, Shenzhen City, China
Tel: (86) 755-26906612 • Fax: (86) 755-26921357

Rev 1.0

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