5-1245-2 - 3M (TC) - Product.Network

1245 Tape

Embossed Copper Foil

Data Sheet

Product Description

3M 1245 Tape consists of an embossed 1-

ounce deadsoft copper foil backing and an

aggressive pressure-sensitive acrylic adhesive.

The edges of the embossed pattern pressed

into the foil cut through the adhesive layer to

establish reliable metal-to-metal contact

between the backing and the application

substrate.

• Embossed deadsoft 1-ounce copper foil

backing

• Conductivity “t hrough the adhesive”

• Supplied on a removable liner for easy

handling and diecutting

Like all 3M shielding tapes, 3M 1245 is

available in standard and custom widths and

lengths. Standard length is 18 yards.

• Widths from 1/4” to 23”

• Longer lengths up to several times normal

length, dependent upon width. Check with

Customer Service.

Applications

3M 1245 Tape is typically u sed for

applications requiring excellent electrical

conductivity from the application substrate

through the adhesive to the foil backing.

Common uses include grounding and EMI

shielding in equipment, components, shielded

rooms, etc. The copper foil backing is

solderable and resists oxidation and

discoloration.

Shielding Effectiveness

Many factors determine the true shielding

effectiveness of a shielding tape, including

type and thickness of foil, adhesive type,

intimacy of contact, smoothness of application

surface, strength and frequency of the EMI

signal, etc. However, using standard tests and

fixtures, it is possible to determine a value for

the attenu a tion.

For 3M 1245 Tape, typical shielding

effectiveness (far field) is in the range of 75dB

to 85dB (30 MHz to 1 GHz).

Properties Typical Values

Backing thickness 11.4 mil (0,04mm)

Total thickness (backing plus adhesive) 4.0 mil (.101mm)

Breaking strength 1 25 lb./in (44 N /10mm)

Adhesion to steel 1 35 oz/in (3,8 N/10mm)

Electrical resistance through adhesive 2 0.001 ohm

Flame retardancy 3 Pass

* Footnote: 1. Test method ASTM D 1000

2. MIL-STD-202 Method 307 mai nta i ned at 5 psi (3,4 N/cm2) measured over 1 in 2 surf ace area. The edges of t he

embossing pattern in the foil backing penet rate t hrough the nonconduc ti ve adhesive to make metal-to-metal contact

with the applicati on substrate.

3. UL-recognized for fl am e retardancy per UL 510, Product Category 0ANZ2, File E17385.

3M is a t rademark of 3M.

Important Notice

All statem ents, tec hnical information and recommendations

related to the Sell e r’s products are based on information

believed to be reliable, but the accuracy or completeness

thereof is not guarant eed. Before utilizing th e product, the

user should determine the suitability of the product for its

intended use. The user assum es all risks and l i abi lity

whatsoev er in connecti on wit h such use.

Any stat ements or recom m endati ons of the Seller which are

not contained i n the Seller’s current publications shall have

no force or effect unl ess cont ai ned in an agreement signed

by an authorized offi cer of the Seller.

The statements contai ned herei n are made in lieu of all

warranties, expressed or implied, incl udi ng but not lim it ed to

the implied warrant ies of merchantability and fitness for a

particular purpose which warranties are hereby ex pressly

disclaimed.

SELLER SHALL NOT BE LIABLE TO THE USER OR ANY

OTHER PERSON UNDER ANY LEGAL THEORY,

INCLUDING B UT NOT LIMITED TO NEGLIGENCE OR

STRICT LIABILITY, FOR ANY INJURY OR FOR ANY

DIRECT, INDIRECT, SPECIAL, INCIDENTA L OR

CONSEQ U ENTI AL DA MAGES SU STAINED OR

INCURRED BY REAS ON OF THE USE OF ANY OF THE

SELLE R’S PRODUCTS THAT WERE DEFECTIVE.

Electrical Products Division

6801 River Place Blvd.

Austin, TX 78726-9000

800 676 8381

78-8124-4707-2