THERMAL COMPOUNDS, ADHESIVES AND INTERFACE MATERIALS
120 SERIES
The
120 Series
Silicone Oil-Based Thermal Joint Compound fills the minute air gap between mating surfaces with
a grease-like material containing zinc oxide in a silicone oil carrier. It possesses an excellent thermal resistance of
only 0.05°C/W for a 0.001 in. film with an area of one square inch. There is no measurable increase in case tem-
perature of a mounted semiconductor on a heat sink after the 6-month stabilization period (Time versus Thermal
Resistivity graph below).
TYPICAL VALUES FOR THERMAL RESISTANCE,
CASE TO SINK (Øcs) WHEN THERMAL JOINT
COMPOUNDS ARE USED
Typical
Mounting Torque Thermal
in inch • pounds Resistance
(N•M)
(°C/W)
8 (0.9)
0.09
9 (0.9)
0.14
8 (0.9)
15 (1.7)
30 (3.39)
75 (8.47)
125 (14.12)
600 (67.79)
0.50
0.16
0.10
0.07
0.07
0.052
120 SERIES - THERMAL JOINT COMPOUND
Characteristic
Volume Resistivity
Dielectric Strength
Specific Gravity
Thermal Conductivity @ 36°C
Thermal Resistivity (P)
Bleed, % after 24 hrs @ 200°C
Evaporation, % after 24 hrs @ 200°C
Color
Shelf life
Operating Temperature Range (°C)
Description
5 X 10
14
ohm-cm
225 volts/mil
2.1 min.
0.735 W/(m)(K)
5.1(Btu) (in.)/(hr)(ft
2
)(°F)
56 (°C)(in.)/watt
0.5
0.5
opaque white
5 years
-40/+200
Case Style Characteristics
T0-3
TO-66
TO-220
0.19 (4.8) stud x 0.44 (11.2) hex
0.25 (6.4) stud x 0.69 (17.5) hex
0.38 (9.7) stud x 1.06 (26.9) hex
0.50 (12.7) stud x 1.06 (26.9) hex
0.75 (19.1) stud x 1.25 (31.8) hex
120 SERIES - ORDER GUIDE
Series -
Container Size
P/N
120-SA
4 gram plastic pak
120-2
2 oz (0.06 kg) jar
120-5
5 oz (0.14 kg) tube
120-8
8 oz (0.23 kg) jar
120-80
5 lb (2.27 kg) can
120-320
20 lb (9.08 kg) can
HIGH PERFORMANCE THERMAL COMPOUND
122 SERIES
122 Series Thermal Joint Compound
is a stable, silicone based, thixotropic paste developed to provide premium
performance at an affordable price. It is formulated to significantly reduce contact thermal resistance where
power densities are concentrated in devices such as flip chip, reduced die size, and ‘overclock’ microprocessors.
When applied as a thin film between a Wakefield heat sink and device it possesses superior thermal conductivity
compared to traditional ‘grease’. It is compatible with automated or manual dispensing methods and is fully RoHS
compliant.
122 SERIES THERMAL JOINT COMPOUND
Typical Characteristics
Appearance
Thermal Conductivity
Thermal Resistance
Bleed
Evaporation
Volume Resistivity
Dielectric Strength
Specific Gravity
Operating Range
Shelf Life
122 SERIES - ORDER GUIDE
Series -
Container Size
P/N
122-10CC
10cc syringe
122-2
2 oz (0.06 kg) jar
122-30CC
30cc syringe
Description
Smooth Gray paste
2.5 W / m °K,
17.3 (Btu) (in.)/(hr) (ft
2
) (
0
F)
0.02 °C in 2 / W
0.015 wt%, 24 hrs at 200°C
0.150 wt%, 24 hrs at 200°C
1.4 x 10
10
ohm-cm
225 volts/mil
2.23 (gm/cc) at 25°C
-40°C to 205°C
5 years
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Products
THERMAL COMPOUNDS, ADHESIVES AND INTERFACE MATERIALS
126 SERIES
The
126 Series
is a nontoxic, synthetic, ester-based (nonsilicone) Thermal Joint Compound with metal oxide
fillers designed to enhance thermal performance characteristics of plastic and metal package devices exceeding
that of silicone-based compounds. Solved are problems associated with contamination of wave solder baths and
migration of silicone-based products. Shelf life: 5 years.
126 SERIES THERMAL JOINT COMPOUND
Characteristics
Appearance
Solids Content, wt %
Thermal Conductivity at 36°C
Interface Thermal Resistance
Bleed, 24 hrs at 200°C, wt%
Evaporation, 24 hrs at 200°C, wt%
Volume Resistivity
Dielectric Strength
Specific Gravity @ 60°F
Penetration
Operating Range
Description
Smooth, white homogeneous paste
65% min
.69 W / m
0
K, 4.8 (Btu)(in.)/(hr) (ft
2
) (°F)
0.043°C/W TO-3 at 0.0008 thick film
0.09% max
0.6 max
2.3 x 10
12
ohms-cm
200 volts/mil
2.93 (gm/cc)
280 to 320
-40°C to 200°C
126 SERIES - ORDER GUIDE
Series -
Container Size
P/N
126-2
2 oz (0.6 kg) jar
126-4
4 oz (0.11 kg) tube
126-4S
4 oz (0.11 kg) syringe
126-5LB
5 lb (2.27 kg) can
DeltaBond™ 152
DeltaBond™ 152
adhesive is ideal for general cementing; thermally bonding semiconductors and components to
chassis or heat sinks, while electrically isolating one from the other; fabricating heat sinks or thermal links; and
for all permanent bonding of assemblies which require high thermally conductive interfaces. It produces a rigid,
high strength bond to most materials when cured.
DeltaBond™ 152
is available in bi-packs, kits, and quarts.
Order one bottle of hardener A-4 or B-4 per one quart of
DeltaBond™ 152
separately. Shelf life: 152KA
3
year,
1
all others
3
years.
2
3
DELTABOND™152
Characteristics
Typical Properties Fully Cured
Thermal conductivity -
W/(m) (°K)
(Btu) (in.)/(hr) (ft
2
) (°F)
Thermal resistivity - (°C) (in.)watt
Bond shear strength
77°F
1 in. overlap - psi
125°F
etched aluminum to
etched aluminum
212°F
Heat distortion point - °F
Minimum dielectric strength,
v/mil, 0.125 in. sample
Max operation
Continuous
temp - °C
Intermittent
Hardener Type
A4
B4
0.836
5.8
47
2,900
2,200
400
130
400
65
100
0.908
6.3
42
2,300
2,000
800
225
400
150
190
DELTABOND™152
Mixing Proportions and Working Properties
Characteristics
Parts of hardener per 100 parts
of resin by weight
*Working Time - at 77°F
†Initial cure time
77°F
150°F
250°F
‡Post-cure time at a temp in °F
‡Alternate room temp. aging
time at 77°F
Working consistency (77°F)
Working viscosity (77°F) cps
A4
7.5
45 min
8 hrs
45 min
20 min
4 hrs @200°F
4 days
viscous liquid
25,000
B4
3.5
30 min
6 hrs
30 min
15 minn
4 hrs @ 200°F
4 days
paste
—
DELTABOND™152
Model
Number
DeltaBond™ 152
Ordering Guide - Resin and Hardener
Resin
Container
Bi-Pack (1 oz)
Bi-Pack (1 oz)
Kit (7 oz Resin, 0.5 oz Hardener)
1 quart (4 lbs)
Hardener
Part Number
All hardener
part numbers
A-4, B-4
Part No.
152-1A
152-1B
152-KA
152-Q
Included in PIN 152-1 A (“A-4”) Type
Included in P/N 152-1 B (“B-4”) Type
lncluded in P/N 152-KA
A-4 (0.316 lb), B-4 (0.14 lb), (order 1 only)
NOTES:
* Since the hardener/resin reaction is exothermic, it is important that batch size be matched to hardener speed. Working times given are for approximate batch sizes: A—200 gms,
B—200 gms. Larger batch sizes will greatly reduce working time.
** For optimum electrical properties, dry parts for 15 minutes at 150°F (65°C) or 30 minutes at 75°F (24°C) to slowly evaporate the thinner and then final cure for 4 hours at 275°F
(135°C).
† After initial cure, material may be handled, removed from fixture, etc., but has not yet achieved full properties and should be room temperature aged or post-cured as shown to
achieve full physical and electrical properties.
‡ After initial cure, material may be brought to full physical and electrical properties during post-cure or may be room temperature aged for charted length of time to achieve same
full properties.
The information contained herein is based on data believed to be reliable but we do not assume responsibility for accuracy. All such information is used at the customer's own risk,
conditions of use being beyond our control.
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Products
THERMAL COMPOUNDS, ADHESIVES AND INTERFACE MATERIALS
DeltaBond™ 153
DeltaCast™ 153
is a pourable casting resin having thermal expansion characteristics similar to aluminum and
copper allowing assemblies to operate over a very wide temperature range. Ideal for encapsulating components
and assemblies, this series' major advantages and uses include potted systems (virtually indestructible), protecting
components and systems from moisture and contaminants, securing proprietary circuitry, mechanical support of
devices, removal of heat from hot components and the assembly equalizing temperatures, and high voltage isola-
tion.
DeltaCast™ 153
is available in quarts and gallons. Order one bottle of hardener A4 or B4 per one quart of
DeltaCast™ 153
separately. Shelf life: 2 years.
3
DELTACAST™153
Characteristics
Typical Properties Fully Cured
Thermal conductivity -
W/(m) (°K)
(Btu) (in.)/(hr) (ft
2
) (°F)
Thermal resistivity - (°C) (in.)watt
Bond shear strength
77°F
1 in. overlap - psi
125°F
etched aluminum to
etched aluminum
212°F
Heat distortion point - °F
Minimum dielectric strength,
v/mil, 0.125 in. sample
Max operation
Continuous
temp - °C
Intermittent
A4
Hardener Type
B4
0.908
6.3
42
1,900
—
—
225
400
150
190
DELTACAST™153
Mixing Proportions and Working Properties
Characteristics
Parts of hardener per 100 parts
of resin by weight
*Working Time - at 77°F
† Initial cure time 77°F
150°F
250°F
‡Post-cure time at a temp in °F
‡Alternate room temp. aging
time at 77°F
Working consistency (77°F)
Working viscosity (77°F) cps
A4
7.5
45 min
8 hrs
45 min
20 min
4 hrs @200°F
4 days
heavy liquid
10,000
B4
3.5
30 min
6 hrs
30 min
15 minn
4 hrs @ 200°F
4 days
viscous liquid
30,000
0.836
5.8
47
2,500
—
—
130
400
65
100
DELTACAST™153
Model
Number
DeltaCast™ 153
Ordering Guide - Resin and Hardener
Part No.
153-Q
Resin
Container
1 quart (4 lbs)
Hardener
Part Number
A-4 (0.316 lb), B-4 (0.14 lb), (order 1 only)
All hardener
part
numbers
A-4, B-4
DeltaBond™ 154
DeltaBond™ 154
is a medium viscosity, aluminum-filled resin with the best thermal conductivity of this series. It
is, however, neither a good electrical insulator nor conductor. Its principal application is that of a good thermal
mechanical adhesive for applications such as bonding fins to base plates or structural mounting blocks or brackets
to heat sinks. Order one bottle of hardener A4 or B4 per one quart of
DeltaBond™ 154
separately. Shelf life: 2
3
years.
DELTABOND™154
Characteristics
Typical Properties Fully Cured
Thermal conductivity -
W/(m) (°K)
(Btu) (in.)/(hr) (ft
2
) (°F)
Thermal resistivity - (°C) (in.)watt
Bond shear strength
77°F
1 in. overlap - psi
125°F
etched aluminum to
etched aluminum
212°F
Heat distortion point - °F
Minimum dielectric strength,
v/mil, 0.125 in. sample
Max operation
Continuous
temp - °C
Intermittent
A4
Hardener Type
B4
1.154
8.0
34
2,400
2,100
800
225
NA*
150
190
DELTABOND™154
Mixing Proportions and Working Properties
Characteristics
Parts of hardener per 100 parts
of resin by weight
*Working Time - at 77°F
† Initial cure time
77°F
150°F
250°F
‡Post-cure time at a temp in °F
‡Alternate room temp. aging
time at 77°F
Working consistency (77°F)
Working viscosity (77°F) cps
A4
11.0
45 min
8 hrs
45 min
20 min
4 hrs @200°F
4 days
viscous liquid
25,000
B4
4.5
30 min
6 hrs
30 min
15 min
4 hrs @ 200°F
4 days
paste
—
1.053
7.3
37
3,000
2,300
500
130
NA*
65
100
DELTABOND™154
Model
Number
DeltaBond™ 154
Ordering Guide - Resin and Hardener
Resin
Container
1 quart (2.5 lbs)
Hardener
Part Number
Part No.
154-Q
A-4 (0.316 lb), B-4 (0.14 lb), (order 1 only)
All hardener
part
numbers
A-4, B-4
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Products
THERMAL COMPOUNDS, ADHESIVES AND INTERFACE MATERIALS
DeltaBond™ 155
DeItaBond™ 155
is an epoxy adhesive formulated for use within the semiconductor industry. An easy to mix spread
thixotropic paste, it offers high heat transfer, low shrinkage, and a coefficient of thermal expansion comparable to that of
copper and aluminum. This adhesive is principally used to form thermally conductive joints in fabricated heat sinks and
between heat sinks and power devices. When used to bond semiconductors to heat sinks, it also serves as an electrical
insulator. Its strong bond to a wide variety of substrates resists severe temperature cycling.
DeItaBond™ 155
is only
available in kit size. Simply squeeze out equal lengths and mix to uniform color. Shelf life: 1 year.
3
DELTABOND™155
Characteristics
Typical Properties Fully Cured
Thermal conductivity -
W/(m) (°K)
(Btu) (in.)/(hr) (ft
2
) (°F)
Thermal resistivity - (°C) (in.)watt
Bond shear strength
77°F
1 in. overlap - psi
125°F
etched aluminum to
etched aluminum
212°F
Heat distortion point - °F
Minimum dielectric strength,
v/mil, 0.125 in. sample
Max operation
Continuous
temp - °C
Intermittent
Hardener Type
DeltaBond™155
0.836
5.8
47
2,600
—
—
130
400
65
100
DELTABOND™155
Mixing Proportions and Working Properties
Parts of hardener per 100 parts of resin
by volume 100
*Working Time - at 77°F
†Initial cure time 77°F
150°F
250°F
‡Post-cure time at a temp in °F
‡Alternate room temp. aging time at 77°F
Working consistency (77°F)
Working viscosity (77°F) cps
90 min
8 hrs
45 min
20 min
4 hrs @ 200°F
4 days
paste
paste
DELTABOND™155
Ordering Guide - Resin and Hardener
Model
Resin
Hardener
Number
Part No.
Container
Part Number
DeltaBond™ 155 155
Kit (3 oz resin, 3 oz hardener) Included in P/N 155
DeltaBond™ 156
DeltaBond™ 156
Thermally Conductive Adhesive is a modified acrylic adhesive designed for permanent mounting on
components where heat must be effectively transmitted. Recommended for electromechanical assemblies to bond com-
ponents and dissipate heat, it replaces mechanical fasteners and compressible pads, silicone grease, and epoxies; elimi-
nates air entrapment, and other variables related to epoxy mixing. This soft paste requires no mixing and flows easily to
allow thin bond lines. Primer activated, cure begins upon assembly. DeltaBond™ Activator fixtures at room temperature
in less than 5 minutes. Full strength is developed in 4 to 12 hours and fillets become dry to the touch in 24 hours. It is
not recommended to use this durable adhesive without the use of DeltaBond™ Activator.
DeltaBond™ 156
is available in
kit size; order 156-K (25 ml Syringe and Activator Kit). Shelf life: 1 year.
DELTABOND™156
Characteristics
Typical Properties Fully Cured
Test
Temperature Range
Results
-65 to 300°F
(-54 to 149°C)
300°F to (177°C)
Intermittent
2360 psi
233,000 psi
7.75%
2.5% TLM
0.05% CVCM
7.1 x 10
-4
(cm/cm°C)
2500psi
3.47 Btu x in./hr ft
2
°F
(0.50 W/m °C)
D638
D638
D638
E595
Description
ASTM
Test
Dielectric Strength
Dielectric Constant, 77°F (25°C)
100 Hz
1000 Hz
1MM Hz
Dissipaton Factor, 77°F (25°C)
100 Hz
1000 Hz
D1002
1MM Hz
Volume Resistivity
Surface Resistivity
0.05
0.03
0.06
5.2x10
11
(ohms-cm)
8.6 x 10 (ohms)
13
DELTABOND™156
Typical Electrical Properties
Results
220 volts/mil
14.92
14.26
12.34
D150
ASTM
D149
D150
Tensile Strength, at break
Modulus
Elongation, at break
Outgassing
Coefficient of Thermal Expansion
Tensile Shear
Thermal Conductivity, K
(absolute at 86°F (30°C)
D257
D257
Note:
The absolute thermal conductivity test was developed specifically
for measuring thermal properties of thin film adhesive bonds.
contains a metallic filler which, in certain applications, may have an
effect on electrical properties. Therefore, test each particular appli-
cation to ensure that electrical properties are as required.
Model
Number
Part No.
DeltaBond™ 156
156-K
DELTABOND™156
Ordering Guide - Resin and Hardener
Resin
Container
Resin Kit Hardener Syringe - 0.85 fl oz - 25 ml - 2 oz
net/0.44 oz fl contents bottle -12ml
Hardener
Part Number
Included in kit hardener with brush applicator -
4.2 oz total wt/kt
* Since the hardener/resin reaction is exothermic, it is important that batch size be matched to hardener speed. Working times given are for approximate batch sizes: A—200 gms,
B—200 gms. Larger batch sizes will greatly reduce working time.
† After initial cure, material may be handled, removed from fixture, etc., but has not yet achieved full properties and should be room temperature aged or post-cured as shown to
achieve full physical and electrical properties.
‡ After initial cure, material may be brought to full physical and electrical properties during post-cure or may be room temperature aged for charted length of time to achieve same
full properties.
The information contained herein is based on data believed to be reliable but we do not assume responsibility for accuracy. All such information is used at the customer's own risk,
conditions of use being beyond our control.
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Accessory
Products
THERMAL COMPOUNDS, ADHESIVES AND INTERFACE MATERIALS
173/174 SERIES
175 SERIES
DeltaPads™ Thermally Conductive Insulators
Greaseless Thermally Conductive Kapton
®
Reinforced Insulators
DeltaPads™
173-7 Series
0.007 in.
Gray
100
1.0 x 10
9
4,000
2.70
-60/+200
3 x 10
-3
0.33
350/550
DeltaPads™
173-9 Series
0.009 in.
Gray
100
1.0 x 10
9
5,000
2.40
-60/+200
3 x 10
-3
0.50
350/550
DeltaPads™
174-9 Series
0.009 in.
Tan
100
1.0 x 10
13
5,000
2.50
-60/+200
1 x 10
-2
0.25
350/550
Kapton
®
175-6 Series
0.006 in.
Gray
ASTM 0624
1 x 10
13
6,000
5.5 @ 1,000 Hz
-60/+200
1.2 x 10
-3
0.40
350/550
Test Method
Micrometer
Visual
ASTM D257
ASTM 0149
ASTM D 150
–
–
–
Formula*
TO-3, TO-66, TO-220,DO-4, DO-5 SHEET
Characteristics
The 173, 174, and 175
Series are highly
efficient thermally con-
ductive insulators de-
signed for semi -
conductor interface
to heat sinks. Their
properties eliminate
messy concerns asso-
ciated with thermal
greases.
Material Thickness
Color
Tear Strength, lb/in. Typical100
Volume Resistivity, megohm-cm, Minimum Normal
Breakdown Voltage, Minimum
Dielectric Constant at 60 Hz and 100 V Maximum
Continuous Use Temperature, °C
Thermal Conductivity, cal/cm sec. °C, Minimum
Thermal Resistance (TO-3), 1 in.
2
°C/W
Recommended Mounting Pressure, lb/in.
2
*P
(pressure in psi) =
173-7
Series
No
Adhesive
–
173-7-220P
173-7-230P
173-7-240P
–
–
–
–
–
–
–
173-7-1212P
Adhesive
Backing
–
–
–
173-7-240A
–
–
–
–
–
–
–
–
173-9
Series
No
Adhesive
173-9-210P
–
173-9-230P
173-9-240P
–
–
–
–
–
–
–
173-9-1212P
T (torque [in.-lb] x N (number of fasteners)
0.2 x D (Thread Dia) x A (contact surface area square inches)
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