DYNASHEAR™ Card/Cage Gaskets
The Best Response to EMI Shielding for Card/Cage Applications
 Schlegel Electronic Materials, SEM, continues their
technical leadership in fabric-over-foam EMI shielding
gaskets with the introduction of the DYNASHEAR™
gasket for card/cage applications.
Our worldwide SEM engineering team reviewed the
mechanical constraints linked to the Blades/Shelf
environment (VME, PCI, ATCA) to create a completely
innovative EMI shielding gasket family able to offer
superior features over metal fingerstock.
See the Press Release
SEM’s DYNASHEAR™ gaskets
are constructed with:
• SEM’s unique D-shape profiles
• Low memory ultra-soft foam
• Abrasion resistant conductive fabrics
offers electronics designers the necessary edge
for improved competitiveness.
Compression Load Deflection (CLD) for EJ9732Txxxx
DYNASHEAR™ gaskets by SEM insures
maximum shielding even at low compression
by means of our unique D-shape design.
SEM’s DYNASHEAR™ gaskets offer one of
today’s best ratios of compression vs. load
due to it’s ultra-soft open cell urethane foam.
Ideal when cummulative tolerances decrease
the gap between modules and increase the
compression on the gasket.
| Compression Force |
0.70 lbs.-inch at 40% compression* |
| Contact Resistance |
0.012 Ohms-inch at 40 % compression* |
| Compression Set |
15.4 % when compressed 50 % for 22 hrs. at 70”C* |
| Recommended compression
for maximum shielding: |
1-70% |
| Shielding Effectiveness |
96 dB (average) 20 MHz-10 GHz - Mil DTL 83528 C (NiCu-C70 fabric cladding) |
| Abrasion Resistance |
No change in surface resistivity 800,000 cycles -NiCu-C70 fabric cladding |
| Operating Temperature |
-400F - +1580F (-400C ,+700C) in accordance with ASTM D3374 |
| Flammability |
V-0 |
| Compliance |
2002/95/EC ( RoHs) Compliant |
| Peel Strength |
3M Adhesive 90” peel strength on stainless steel : 128/142 Oz./in after 72 hours ŠASTM D3330 |
| *Results measured on DYNASHEAR™ gasket part number EJ9732Zxxxx |
 |
2.0mm |
2.3mm |
2.7mm |
3.3mm |
3.8mm |
| 8 mm |
EV3732Zxxxx |
EP1732Zxxxx |
EU8732Zxxxx |
EV6732Zxxxx |
EV7732Zxxxx |
| 10 mm |
EJ8732Zxxxx |
EJ9732Zxxxx |
EK1732Zxxxx |
EK2732Zxxxx |
EK3732Zxxxx |
| 12.7 mm |
EK4732Zxxxx |
EK5732Zxxxx |
EK6732Zxxxx |
EK7732Zxxxx |
EK8732Zxxxx |
| xxxx: specifies length in the form xx.xx" |
| Standard parts supplied with wide release liner. PSA: 2 strips of adhesive is standard |
|
