SOFT-SHIELD® 3500 Low Closure Force EMI Strip Gaskets - Flat Strip Profiles On Robert McKeown Co., Inc.

The SOFT-SHIELD® 3500 fabric over foam (fof) product family are a group of low-closure force EMI/EMC gaskets. SS3500 offers a low cost competitive solution for EMI shielding and electrical grounding in sheer and compression.

The SS3500 product family is comprised of conductive fabric wrapped around open cell foam. This wrap around technology grounds the gasket from point to point, ultimately eliminating an EMI/EMC gap.

SS3500 typically requires less then 1lb/in (0.175/ mm) closure force, making it effective for low closure force applications. SS3500 takes less than 15% compression set. This is less than most other FOF’s on the market resulting in reliable/ repeatable shielding performance. SS3500 is an excellent alternative shielding solution to traditional spring finger type products.

The SS3500 product family is one of the most versatile EMI fof products offered to the market. Depending on mechanical and shielding requirements, the SS3500 can be made with different conductive jackets. Nickel-plated taffeta, Nickel-plated rip-stop polyester, halogen free nickel-plated rip-stop, etc. New geometric profiles are designed and released to the market on a regular basis. Profiles are engineered to optimize mechanical form fit and function while optimizing electrical performance. This technical data sheet will address the most common type FOF. Chomerics has to offer to market. Contact Chomerics for any other special design requirements and an updated profile list.

Product Features:

Low cost
> 100 (dB) shielding effectiveness 50 MHz to 10 GHz
Low closure force
Ultra-soft profiles that accommodate a wide range of tolerance gaps
Over 200 profiles available to the market
Readily available in bulk, cut to length or with cut features
ULV0
RoHS Compliant
REACH Compliant
Excellent low compression set properties
Abrasion/sheer resistant conductive jackets
Low contact resistance

Typical Applications:

Server Faceplates and blade cards
Panel seals
Cover seal
Door seals
Grounding tabs
EMI Window/vent seals
Improved ground paths
Low cost solutions are imperative

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Item #	PSA Tape Backing	Profile Number	Height	Width	Shielding Effectiveness at 50 MHz to 10 GHz	35% Compression Deflection
77-1N-3244	N/A Halogen Green Taffeta, PSA and Extended Line	N/A 3244	N/A 0.079 in2.0 mm	N/A 0.709 in18.0 mm	N/A > 100 dB	N/A < 1 lb/in< 0.175 N/mm
77-1N-3260	N/A Halogen Green Taffeta, PSA and Extended Line	N/A 3260	N/A 0.079 in2.0 mm	N/A 1.575 in40.0 mm	N/A > 100 dB	N/A < 1 lb/in< 0.175 N/mm
77-1N-3261	N/A Halogen Green Taffeta, PSA and Extended Line	N/A 3261	N/A 0.126 in3.2 mm	N/A 1.575 in40.0 mm	N/A > 100 dB	N/A < 1 lb/in< 0.175 N/mm
77-1N-3402	N/A Halogen Green Taffeta, PSA and Extended Line	N/A 3402	N/A 0.079 in2.0 mm	N/A 0.984 in25.0 mm	N/A > 100 dB	N/A < 1 lb/in< 0.175 N/mm
77-1P-3244	N/A Halogen Green Rip Stop, No PSA	N/A 3244	N/A 0.079 in2.0 mm	N/A 0.709 in18.0 mm	N/A > 100 dB	N/A < 1 lb/in< 0.175 N/mm
77-1P-3260	N/A Halogen Green Rip Stop, No PSA	N/A 3260	N/A 0.079 in2.0 mm	N/A 1.575 in40.0 mm	N/A > 100 dB	N/A < 1 lb/in< 0.175 N/mm
77-1P-3261	N/A Halogen Green Rip Stop, No PSA	N/A 3261	N/A 0.126 in3.2 mm	N/A 1.575 in40.0 mm	N/A > 100 dB	N/A < 1 lb/in< 0.175 N/mm
77-1P-3402	N/A Halogen Green Rip Stop, No PSA	N/A 3402	N/A 0.079 in2.0 mm	N/A 0.984 in25.0 mm	N/A > 100 dB	N/A < 1 lb/in< 0.175 N/mm
77-1Q-3244	N/A Halogen Green Rip Stop, PSA Only (No Extended Liner)	N/A 3244	N/A 0.079 in2.0 mm	N/A 0.709 in18.0 mm	N/A > 100 dB	N/A < 1 lb/in< 0.175 N/mm
77-1Q-3260	N/A Halogen Green Rip Stop, PSA Only (No Extended Liner)	N/A 3260	N/A 0.079 in2.0 mm	N/A 1.575 in40.0 mm	N/A > 100 dB	N/A < 1 lb/in< 0.175 N/mm
77-1Q-3261	N/A Halogen Green Rip Stop, PSA Only (No Extended Liner)	N/A 3261	N/A 0.126 in3.2 mm	N/A 1.575 in40.0 mm	N/A > 100 dB	N/A < 1 lb/in< 0.175 N/mm
77-1Q-3402	N/A Halogen Green Rip Stop, PSA Only (No Extended Liner)	N/A 3402	N/A 0.079 in2.0 mm	N/A 0.984 in25.0 mm	N/A > 100 dB	N/A < 1 lb/in< 0.175 N/mm
77-1R-3244	N/A Halogen Green Rip Stop, PSA and Extended Liner	N/A 3244	N/A 0.079 in2.0 mm	N/A 0.709 in18.0 mm	N/A > 100 dB	N/A < 1 lb/in< 0.175 N/mm
77-1R-3260	N/A Halogen Green Rip Stop, PSA and Extended Liner	N/A 3260	N/A 0.079 in2.0 mm	N/A 1.575 in40.0 mm	N/A > 100 dB	N/A < 1 lb/in< 0.175 N/mm
77-1R-3261	N/A Halogen Green Rip Stop, PSA and Extended Liner	N/A 3261	N/A 0.126 in3.2 mm	N/A 1.575 in40.0 mm	N/A > 100 dB	N/A < 1 lb/in< 0.175 N/mm
77-1R-3402	N/A Halogen Green Rip Stop, PSA and Extended Liner	N/A 3402	N/A 0.079 in2.0 mm	N/A 0.984 in25.0 mm	N/A > 100 dB	N/A < 1 lb/in< 0.175 N/mm
77-1H-3244	N/A RipStop fabric No PSA	N/A 3244	N/A 0.079 in2.0 mm	N/A 0.709 in18.0 mm	N/A > 100 dB	N/A < 1 lb/in< 0.175 N/mm
77-1H-3260	N/A RipStop fabric No PSA	N/A 3260	N/A 0.079 in2.0 mm	N/A 1.575 in40.0 mm	N/A > 100 dB	N/A < 1 lb/in< 0.175 N/mm
77-1H-3261	N/A RipStop fabric No PSA	N/A 3261	N/A 0.126 in3.2 mm	N/A 1.575 in40.0 mm	N/A > 100 dB	N/A < 1 lb/in< 0.175 N/mm
77-1H-3402	N/A RipStop fabric No PSA	N/A 3402	N/A 0.079 in2.0 mm	N/A 0.984 in25.0 mm	N/A > 100 dB	N/A < 1 lb/in< 0.175 N/mm
77-1J-3244	N/A RipStop fabric, PSA and Extended Liner	N/A 3244	N/A 0.079 in2.0 mm	N/A 0.709 in18.0 mm	N/A > 100 dB	N/A < 1 lb/in< 0.175 N/mm
77-1J-3260	N/A RipStop fabric, PSA and Extended Liner	N/A 3260	N/A 0.079 in2.0 mm	N/A 1.575 in40.0 mm	N/A > 100 dB	N/A < 1 lb/in< 0.175 N/mm
77-1J-3261	N/A RipStop fabric, PSA and Extended Liner	N/A 3261	N/A 0.126 in3.2 mm	N/A 1.575 in40.0 mm	N/A > 100 dB	N/A < 1 lb/in< 0.175 N/mm
77-1J-3402	N/A RipStop fabric, PSA and Extended Liner	N/A 3402	N/A 0.079 in2.0 mm	N/A 0.984 in25.0 mm	N/A > 100 dB	N/A < 1 lb/in< 0.175 N/mm
77-1K-3244	N/A RipStop fabric, PSA No Extended Liner	N/A 3244	N/A 0.079 in2.0 mm	N/A 0.709 in18.0 mm	N/A > 100 dB	N/A < 1 lb/in< 0.175 N/mm

3244

0.079 in2.0 mm

0.709 in18.0 mm

> 100 dB

< 1 lb/in< 0.175 N/mm

77-1N-3260

Halogen Green Taffeta, PSA and Extended Line

3260

0.079 in2.0 mm

1.575 in40.0 mm

> 100 dB

< 1 lb/in< 0.175 N/mm

77-1N-3261

Halogen Green Taffeta, PSA and Extended Line

3261

0.126 in3.2 mm

1.575 in40.0 mm

> 100 dB

< 1 lb/in< 0.175 N/mm

77-1N-3402

Halogen Green Taffeta, PSA and Extended Line

3402

0.079 in2.0 mm

0.984 in25.0 mm

> 100 dB

< 1 lb/in< 0.175 N/mm

77-1P-3244

Halogen Green Rip Stop, No PSA

3244

0.079 in2.0 mm

0.709 in18.0 mm

> 100 dB

< 1 lb/in< 0.175 N/mm

77-1P-3260

Halogen Green Rip Stop, No PSA

3260

0.079 in2.0 mm

1.575 in40.0 mm

> 100 dB

< 1 lb/in< 0.175 N/mm

77-1P-3261

Halogen Green Rip Stop, No PSA

3261

0.126 in3.2 mm

1.575 in40.0 mm

> 100 dB

< 1 lb/in< 0.175 N/mm

77-1P-3402

Halogen Green Rip Stop, No PSA

3402

0.079 in2.0 mm

0.984 in25.0 mm

> 100 dB

< 1 lb/in< 0.175 N/mm

77-1Q-3244

Halogen Green Rip Stop, PSA Only (No Extended Liner)

3244

0.079 in2.0 mm

0.709 in18.0 mm

> 100 dB

< 1 lb/in< 0.175 N/mm

77-1Q-3260

Halogen Green Rip Stop, PSA Only (No Extended Liner)

3260

0.079 in2.0 mm

1.575 in40.0 mm

> 100 dB

< 1 lb/in< 0.175 N/mm

77-1Q-3261

Halogen Green Rip Stop, PSA Only (No Extended Liner)

3261

0.126 in3.2 mm

1.575 in40.0 mm

> 100 dB

< 1 lb/in< 0.175 N/mm

77-1Q-3402

Halogen Green Rip Stop, PSA Only (No Extended Liner)

3402

0.079 in2.0 mm

0.984 in25.0 mm

> 100 dB

< 1 lb/in< 0.175 N/mm

77-1R-3244

Halogen Green Rip Stop, PSA and Extended Liner

3244

0.079 in2.0 mm

0.709 in18.0 mm

> 100 dB

< 1 lb/in< 0.175 N/mm

77-1R-3260

Halogen Green Rip Stop, PSA and Extended Liner

3260

0.079 in2.0 mm

1.575 in40.0 mm

> 100 dB

< 1 lb/in< 0.175 N/mm

77-1R-3261

Halogen Green Rip Stop, PSA and Extended Liner

3261

0.126 in3.2 mm

1.575 in40.0 mm

> 100 dB

< 1 lb/in< 0.175 N/mm

77-1R-3402

Halogen Green Rip Stop, PSA and Extended Liner

3402

0.079 in2.0 mm

0.984 in25.0 mm

> 100 dB

< 1 lb/in< 0.175 N/mm

77-1H-3244

RipStop fabric No PSA

3244

0.079 in2.0 mm

0.709 in18.0 mm

> 100 dB

< 1 lb/in< 0.175 N/mm

77-1H-3260

RipStop fabric No PSA

3260

0.079 in2.0 mm

1.575 in40.0 mm

> 100 dB

< 1 lb/in< 0.175 N/mm

77-1H-3261

RipStop fabric No PSA

3261

0.126 in3.2 mm

1.575 in40.0 mm

> 100 dB

< 1 lb/in< 0.175 N/mm

77-1H-3402

RipStop fabric No PSA

3402

0.079 in2.0 mm

0.984 in25.0 mm

> 100 dB

< 1 lb/in< 0.175 N/mm

77-1J-3244

RipStop fabric, PSA and Extended Liner

3244

0.079 in2.0 mm

0.709 in18.0 mm

> 100 dB

< 1 lb/in< 0.175 N/mm

77-1J-3260

RipStop fabric, PSA and Extended Liner

3260

0.079 in2.0 mm

1.575 in40.0 mm

> 100 dB

< 1 lb/in< 0.175 N/mm

77-1J-3261

RipStop fabric, PSA and Extended Liner

3261

0.126 in3.2 mm

1.575 in40.0 mm

> 100 dB

< 1 lb/in< 0.175 N/mm

77-1J-3402

RipStop fabric, PSA and Extended Liner

3402

0.079 in2.0 mm

0.984 in25.0 mm

> 100 dB

< 1 lb/in< 0.175 N/mm

77-1K-3244

RipStop fabric, PSA No Extended Liner

3244

0.079 in2.0 mm

0.709 in18.0 mm

> 100 dB

< 1 lb/in< 0.175 N/mm

Item #

PSA Tape Backing

Profile Number

Height

Width

Shielding Effectiveness at 50 MHz to 10 GHz

35% Compression Deflection

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