Accessory
Products
126 SERIES THERMAL JOINT COMPOUND
Characteristics Description
Appearance Smooth, white homogeneous paste
Solids Content, wt % 65% min
Thermal Conductivity at 36°C .69 W / m
0
K, 4.8 (Btu)(in.)/(hr) (ft
2
) (°F)
Interface Thermal Resistance 0.043°C/W TO-3 at 0.0008 thick film
Bleed, 24 hrs at 200°C, wt% 0.09% max
Evaporation, 24 hrs at 200°C, wt% 0.6 max
Volume Resistivity 2.3 x 10
12
ohms-cm
Dielectric Strength 200 volts/mil
Specific Gravity @ 60°F 2.93 (gm/cc)
Penetration 280 to 320
Operating Range -40°C to 200°C
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
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 - ORDER GUIDE
Container Size
Series -
P/N
THERMAL COMPOUNDS, ADHESIVES AND INTERFACE MATERIALS
DELTABOND™152
Mixing Proportions and Working Properties
Characteristics A4 B4
Parts of hardener per 100 parts
of resin by weight 7.5 3.5
*Working Time - at 77°F 45 min 30 min
†Initial cure time 77°F 8 hrs 6 hrs
150°F 45 min 30 min
250°F 20 min 15 minn
‡Post-cure time at a temp in °F 4 hrs @200°F 4 hrs @ 200°F
‡Alternate room temp. aging 4 days 4 days
time at 77°F
Working consistency (77°F) viscous liquid paste
Working viscosity (77°F) cps 25,000 —
DELTABOND™152
Characteristics Hardener Type
Typical Properties Fully Cured A4 B4
Thermal conductivity -
W/(m) (°K) 0.836 0.908
(Btu) (in.)/(hr) (ft
2
) (°F) 5.8 6.3
Thermal resistivity - (°C) (in.)watt 47 42
Bond shear strength 77°F 2,900 2,300
1 in. overlap - psi 125°F 2,200 2,000
etched aluminum to
etched aluminum 212°F 400 800
Heat distortion point - °F 130 225
Minimum dielectric strength,
v/mil, 0.125 in. sample 400 400
Max operation Continuous 65 150
temp - °C Intermittent 100 190
DELTABOND™152
Ordering Guide - Resin and Hardener
Resin Hardener
Part No. Container Part Number
152-1A Bi-Pack (1 oz) Included in PIN 152-1 A (“A-4”) Type
DeltaBond™ 152 152-1B Bi-Pack (1 oz) Included in P/N 152-1 B (“B-4”) Type
152-KA Kit (7 oz Resin, 0.5 oz Hardener) lncluded in P/N 152-KA
152-Q 1 quart (4 lbs) A-4 (0.316 lb), B-4 (0.14 lb), (order 1 only)
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 1 year,
all others 2 years.
All hardener
part numbers
A-4, B-4
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.
Model
Number
DeltaBond™ 152
126 SERIES
65
