BioSciences - Polysciences, Inc.

NoSWEEP Wire Bond Encapsulant
Electronic Adhesives & Encapsulants
The patented technology Ring-lock dispense method (developed jointly with Kulicke & Soffa) was
created especially for lead-frame and 3-D packages. NoSWEEP s unique high performance
epoxy chemistry allows a very small bead of material to be extruded across the wires. The material
encapsulates a small section of the wires and is then UV gelled to lock the polymer and the wires
in place before molding. Because only a very small amount of polymer is used, this process is an
extremely cost effective solution for wire sweep and allows much broader design leeway.
Side view SEM of NoSWEEP Ring-lock* dispense
method completely encapsulating a wire section on
a quad tier copper wire bonded device.
Specific
Gravity
Viscosity
@ 25°C
(CPS)
Tg
(°C)
Modulus
@ 25°C
(Mpa)
Ring-lock Bead Encapsulant
SEM of NoSWEEP Ring-lock* dispense method on
the same quad tier copper wire bonded device.
1.67 250K 174 9000 23 63 UVA 1J/cm2 @ 90°C
Comments: UV + thermal cure, Ring-lock or full
+ 60min @ 130+°C
wire encapsulation; thermal cure during transfer
180min @ 175°C
mold post most cure cycle.
(typical post mold cure)
Wire Only Encapsulant
1.80 115K >180 14000 14 29 UVA 1J/cm2 @ >90°C
or 120min @ 130+°C
Comments: Excellent flow through wires,
UV-thermal cure.
120min @ 170
(typical post mold cure)
Glob Top Wire Only Encapsulant
1.70 50K 120 2000 20 70 60min @ 100+°C
60min @ 165°C
Comments: Low viscosity version of EW8003 for glob top or dam/fill.
1.70 250K 160 2500 18 50 90min @ 100+°C
60min @ 165°C
Comments: High performance globe top, low moisture abs.
1.70 50K 140 2000 20 80 2hrs @ 120°C
or 30min @ 150°C
** Product subject to dry ice shipment fee.
CTE a1
(ppm/°C)
CTE a2
(ppm/°C)
Cure
Schedule (°C)
JEDEC
Level
Reflow
Temp (°C)
2A 260
3 240
2 260
2 260
2 260
Catalog # Size
For volume pricing, send
e-mail requests to:
info@polysciences.com
or call:
U.S. & Canada
(215) 343-6484 or
(800) 523-2575
European Office
+(49) 6221-765767
Asia Pacific Office
(866) 2 8712 0600
EW7073-10** 5X10cc
EW7072-10** 5X10cc
EW8002-10** 5X10cc
EW8003-10** 5X10cc
EW8004** 5X10cc
For more information please call (800) 523-2575 or visit: www.polysciences.com 311