FINGERSTOCK GASKETS. Physical Characteristics. Specific weight: 8.4g/cm 3 Melting point: 900 C Coefficient to expansion:

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1 FINGERSTOCK GASKETS Application Due to their outstanding material and electrical characteristics, beryllium copper finger of different shapes and dimension are used in the following industries: Broadcasting, telecommunications industrial control, measuring and instrumentation, aerospace technology, nuclear physics and data processing. Contact fingers and rings made of beryllium copper are used at all ratio and microwave frequencies, for instance as contacts to valves and tuning components as well as for shielding. Material Properties The beryllium copper (CuBe2) used for our products is a quality tested quench hardening spring material. It is noteworthy for its yield point, tensile strength and elasticity, good electrical conductivity, high fatigue strength as well as its resistance to abrasion and corrosion. The good thermal conductivity coupled with hardness eliminates sparking. The raw material is non-magnetic and has an excellent temperature performance. Physical Characteristics Specific weight: 8.4g/cm 3 Melting point: 900 C Coefficient to expansion: ( C) 17x10-6 / C Thermal conductivity: 0.27 cal/cm s C 1.13 W/cm C Vickers hardness: Bending resistance at 10 8 cycles strength: N/mm 2 Modulus of elasticity: N/mm 2 Modulus of torsion: N/mm 2 Spring bending limit: N/mm 2 Electrical conductivity: m/ω mm 2 Material Options Material: hardened or unhardened Finish: bright finish, silver, gold, zinc, bright tin, tin lead, bright nickel or according to customer specifications. Plating codes: see page 19 Material in stock: hardened and bright finish or hardened and silver or tin plated 4-6 µm. Components As a single finger, contact strip or contact ring Contact strips are carried as stock items Almost all contact strips can be formed the user into contact rings Special finger New shapes and special types available at short notice. Please note: While we believe the information in this document to be correct and in accordance with DIN or MIL standard, we cannot guarantee electrical specification and we accept no responsibility for any errors or misprints. Details are subject to change without notification. Ordering information EXAMPLE P/N: BC Surface Finish and Plating Part Number Type of Material Type of Material BC: Beryllium Copper SS: Stainless Steel (upon request) BP: Phosphor Bronze (upon request) Surface Finish and Plating Codes -02 bright finish -03 gold -04 silver -15 zinc chromate/clear -17 bright tin -19 bright nickel -00 customer specification DS Communications ~ P O Box 4120, Halfway House ~ 54 Elevation Ave., Randjesfontein, Midrand, Tel No: ~ Fax No: ~ dscoms@dscoms.com ~ website

2 Contact Strips Form a b c l A B C D Surface finish and plating codes: see page 19 Form a b c l E F Surface finish and plating codes: see page 19 Form a b c l G H I K Surface finish and plating codes: see page 19 2

3 Contact Strips Form a b c l L Surface finish and plating codes: see page 19 Form a b c l M Surface finish and plating codes: see page 19 Form a b c l N N O P Q Surface finish and plating codes: see page 19 3

4 Contact Strips Form a b c l R R S S T Surface finish and plating codes: see page 19 Form a b c l U U U U U Surface finish and plating codes: see page 19 4

5 Twisted Contact Strips Form a b c l X " " mm endless 8504 X mm 8505 X mm 8506 Y " " mm endless 8514 *w: other dimension available Form a b A B D l mm mm X X Also available with lances 5

6 Mini-Twisted Contact Strips Form a b c l XM endless 8613 X 1M X 2M *w: other dimension available Form a b A B D L mm mm X X X X X X X 5 and X 6 also available with lances 6

7 RFI/EMI-Shielding Form a b c B D l mm mm V upon request 8802 V V upon request 8805 Electrical Properties Excellent shielding values >110 db at 100 MHz Application Shielding of doors and other movable parts in shielded rooms and enclosure Mounting By way of rivets, screws or soldering Material Bericlo 25, CuBe2,1/2 H Spring hardened Finish bright finish gold silver zinc chromate/clear bright tin bright nickel customer specification see also page 19 7

8 Clip-on-Gaskets Form a b B l CL / CL / CL / Form a b B l CL / CL / CL / Form a b B l CL / CL / CL / Form a b l CL Form a b B l CL / CL / CL /

9 Clip-on-Gaskets Form a b B l CL / CL / CL / Form a b l CL Form a b l CL / CL / Form a b B l S mm CL CL Form a b l CL

10 Clip-on-Gaskets Form a b l CL / Form a b l CL / Form a b A B D H L CL CL CL CL CL CL Also available with T-Lances Form a b A B D H L CL CL CL Also available with T-Lances 10

11 Clip-on-Gaskets Form a b A B D H L CL CL CL CL CL CL CL Also available with T-Lances Form a b A B D H L CL 29* CL 30* CL 31* CL 32* CL 33* CL 34* CL 35* CL CL * Also available with D-Lances 11

12 Clip-on-Gaskets Form a b A B D H L CL CL CL CL CL CL CL CL CL Form a b A B D H L CL CL CL Also available with D-Lances 12

13 Curved Fingers Form a b c F J K l V V V V V Form a b c F J K l V V V V V

14 Slippy Fingers Form a b c φ l mm V V V V Description Curved and slippy fingers can be used to shield housings, enclosures and panels very effectively against interference. The space needed is minimal and assembly is extremely simple as the under side of the fingers is provided with two sided adhesive strip. Extensive soldering, riveting or bolting is therefore not necessary. The measured attenuation values are excellent. Magnetic field: at 14 khz more than 46 db. Plane waves: at 10 GHz approx. 108 db. Slippy fingers are a further development of the curved fingers, where the free part of the finger is retained within a channel and is therefore protected against damage. As compression increases, the fingers will slide further into the channel. Material Bericlo 25, CuBe2,1/2 H Spring hardened Finish bright finish gold silver zinc chromate/clear bright tin bright nickel customer specification see also page 19 14

15 Grounding and Shield Strips Form a b C H B S L W W W / W W Form a b C H B S L W W W W Form a b C H B S L W Form a b C H B S L J J J Form a b C H B S L J J J Form a b C H B S L Z L also to customer specifications. 15

16 Contact Strips and Rings for Radio Amateurs Form a b c l N O P Q Form a b c l R S T Material options Material: hardened or unhardened Finish: bright finish or silver plated Material in stock: hardened and bright finish or hardened and silver plated 4-6 µm Components As a single finger, contact strip or contact ring. Contact strips are carried as stock items. Almost all contact strips can be formed the user into contact rings. 16

17 Slot-Mount Shields in Strips or Short Lenghts Form a b S GK GK Surface finish and plating code: see page 19 Form a b S GK GK Surface finish and plating code: see page 19 Form a b S GK Surface finish and plating code: see page 19 Form a b S GK GK Surface finish and plating code: see page 19 Form a b S GK GK Surface finish and plating code: see page 19 Form a b S GK GK Surface finish and plating code: see page 19 17

18 Mounting Tracks and Accessories As an alternative to slot in the housing, a mounting trck can be used for the shields with a T-end-piece. Mounting track MS 2 for GK Material: Stainless steel Mounting track MS 3 for GK Material: Brass Mounting track MS 4 for GK Material: Brass Mounting track MS 5 for GK Material: Brass T-end-piece TE 1 for GK TE 2 for GK TE 3 for GK Plastic rivet N E for sheet mm 9754 N E for sheet mm

19 Rounded Shields Form a b H B S L mm mm HR HR HR Form K F M N No. Of rivets HR HR HR Examples of typical application Surface finishes for all shields You can choose from a range of surfaces finishes. Just add the code for the finish you want onto the in your order. Thus means a V1-shield with bright surface finish. Surface finish and plating codes Code Required finish -02 bright finish -03 gold -04 silver -15 zinc chromate/clear -17 bright tin -19 bright nickel -00 customer specification 19

20 DIN Connector Gaskets 9540 Material: CuBe 2 Thickness: 0.2 mm Plating code: see page Material: CuBe 2 Thickness: 0.2 mm Plating code: see page Material: CuBe 2 Thickness: 0.2 mm Plating code: see page Material: CuBe 2 Thickness: 0.2 mm Plating code: see page 19 20

21 D -Connector Shields with Contact Flange "D"-connector shields for shielding and grounding of "D" sub-miniature connectors with 9,15,25,37 or 50 pins. With a 20 continuous contact flange. Material: CuBe or VA. Whole range of surface finishes available with CuBe. Pins VA CuBe Pins VA CuBe Pins VA CuBe Pins VA CuBe Pins VA CuBe

22 D -Connector Shields with Contact Fingers "D"-connector shields for shielding and grounding of "D" sub-miniature connectors with 9,15,25,37 or 50 pins. With a 20 continuos contact fingers. Material: CuBe or VA. Whole range of surface finishes available with CuBe. A Pins mm VA CuBe A Pins mm VA CuBe A Pins mm VA CuBe A Pins mm VA CuBe A Pins mm VA CuBe

23 PCB Contact Fingers (Clip-On) Form a b mm mm CL Thickness: mm Form a b mm mm CL Thickness: mm Form a b mm mm CL Thickness: mm Form a b mm mm CL Thickness: mm Form a b mm mm CL Thickness: 0.08 mm Form a b mm mm CL Thickness: 0.07 mm Form a b mm mm CL Thickness: 0.09 mm 23

24 PCB Contact Fingers with Hole/Pins Form No. of A fingers mm EL EL EP EP Thickness: 0.2 mm Form No. of A fingers mm OL OP Thickness: 0.15 mm Form No. of A fingers mm J 5 L J 5 P CL 5 L CL 5 P Thickness: mm Form No. of A fingers mm CL 6 L CL 6 P Thickness: mm Form No. of A fingers mm V 1 L V 1 P Thickness: mm Form No. of A fingers mm L P P L P L L P L P Thickness: LPP=0.127 mm LPL=0.15 LPLP= DS Communications ~ P O Box 4120, Halfway House ~ 54 Elevation Ave., Randjesfontein, Midrand, 1685 Tel No: ~ Fax No: ~ dscoms@dscoms.com ~ website