Comparisons of Various Methods of EMI Shielding

INSUL-FAB's modern manufacturing facility ensures ample capacity and capabilities to support your prototype and production requirements. All equipment is located within our plant allowing for rapid turnaround. With a large variety of die cutting presses, we can efficiently produce parts of all sizes in large or small quantities. Production involves lamination, cutting, adhesive assembly, and even folding or part number application.
   

 

 

We'll help you design a solution that's right for you. In todays competitive business climate speed and quality are essential to success. At INSUL-FAB OF TEXAS we are committed to delivering the highest standards in craftsmanship through a timely and cost effective process. From initial designs to final delivery, we work directly with you, our customer, to determine, clarify, and meet your EMI/RFI Shielding requirements. Early involvement of our experienced sales and application engineers ensures a successful design solution.

 

 

Our interactive engineering support includes computer drawing file transfers via modem or email. State-of-the-art CAD software is utilized for design, prototyping, and production tooling.
INSU-FAB laminates are available with a wide variety of foils and insulating substrates.
Multilayer designs can incorporate additional insulation, pressure sensitive adhesives, and conductive foil tapes for assembly and insulation.


Creases and perforations in part designs allow for easy folding. Shielding designs often fully or partially enclose PCB's or line the inside of an enclosure like a second skin. Because shielding is often needed at the final phase of an electronic componet's development, INSUL-FAB shielding laminates have a very short lead time and are economical compared to other shielding methods.

 

 

 
Method
Shielding
Effectiveness
(db)
Typical
Cost $/ft2
Conductive Paints
50
2.00
Electroless Plating
85
2.50
Conductive Plastics
60
2.50
Vacuum Metalizing
85
3.50
Flexible Laminates
>90
1.25

Providing electronic
equipment manufacturers
superior EMI/RFI protection

 

 
We will also produce your tooling and maintain it in our shop between orders. Our manufacturing teams apply the proper combination of equipment, technology, and human expertise to every order.
Attention to detail and our uncompromised commitment to product quality and customer service set us apart. Our continued investment in facilities, equipment, and people allows INSUL-FAB to consistently deliver correct products and superior customer service.

 

Foil Materials (X)
Thickness Available (Y)
Shielding Effectiveness a
@100 MHz
A = Aluminum
C = Copper
T = Tinned Copper
B = .002" C = .003" D = .004"
K = 1oz.(.0014") L = 2oz.(.0028")
K = 1oz.(.0014")
130 dB @ 2 mils Thick
110 dB @ 1oz. Thick
110 dB @ 1oz. Thick
Insulator (I)
Color
Thicknes Available in mils (ZZ)
UL 94
Flame Rating b
Max. Use c
Temperature
Dielectric
Strength(V)d
V(B) = PVC
V(W) = PVC
Black
White
10      
10 15    
VTM-0 (10 mil)
V-0 (15 mil)
155°F
3500
@ 10 mil
E = Polyester
(i.e. Mylar®2)
Clear
 
02
03
05
10
VTM-2
(all thicknesses)
350°F
4500
@ 10 mil
F = Formex®3
Polypropylene
Black
White
05
10
17
30
17
30

VTM-0 (5-10 mil)
V-0 (15-30 mil)
225°F
22,000
@ 10 mils
C = Lexan®1
Polycarbonate
Black
Clear
10
17
05
10
20
30
V-0
(most thicknesses)
275°F
17,000
@ 10 mils
X = Valox®1
FR-1 Film
White
 
05
10
15
30
VTM-0 (5-15 mil)
V-0 (30 mil)
400°F
16,650
@ 10 mils
N = Nomex®2
Type 410
Tan
 
02
10
15
V-0
(>10 mil only)
450°F
8000
@ 10 mils
K = Kapton®2
Type HN
Auburn
 
01
03
05
V-0
(all thicknesses)
500+°F
7000
@ 1 mil
Data provided for reference use and comparison only. No specific warranties are made by INSUL-FAB OF TEXAS. Foil and Insulator materials listed in order of relative cost at any given thickness.
1 Lexan and Valox are registered trademarks of GE Plastics.
2 Mylar, Nomex, and Kapton are registered trademarks of E.I. DuPont deNemours & Co., Inc.
3 Formex is a registered trademark of ITW Fastex, FRP Products Division.


 		a MIL_STD-285 E-Field (High Impedance Waves)
b This rating is not intended to reflect hazards presented by this or any other material under actual fire conditions.
c Maximum recommended usage temperature based upon Heat Deflection Temperature (D-648) and Melt Point.
d ASTM D-149
Laminate Designation
XY - IZZ: For laminates with one insulator Example: AB - E05 = .002Aluminum on .005" Polyester
INSUL-FAB OF TEXAS EMI/RFI Laminates consist of a thin conductive foil with an insulating layer on one or both sides, laminated using a pressure sensitive adhesive. With a variety of foil and insulator types and thicknesses, there are many possible combinations depending on your needs for attenuation, temperature resistance, dielectric strength, solderability, thickness, puncture resistance, appearance (color), and flexibility. Utilizing these shielding materials, INSUL-FAB can die cut parts to meet your custom specifications with a fast turnaround and inexpensive tooling.
  • Conductive and non-conductive adhesives may be incorporated to the part design for assembly or installation.
  • Features such as score lines can be easily utilized for folding and assembly of the die cut shields.
  • Layers may have different features cut into them to allow partial exposure for grounding and insulating purposes.
  • Call for availability of additional insulators or more information.
  • Sample kits of common laminate contructions are available for prototyping.

   

Insul-Fab of Texas
6120 Peeler Street
Dallas, Texas 75235
(214) 956-0055 Dallas
(214) 956-0848 Fax

Insul-Fab of Tyler
3632 Shiloh Road
Tyler, Texas 75707
(903) 581-0697
(903) 581-0104 Fax




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