D Contact Gasket for EMI Shielding and Grounding Applications
The D Contact Gasket is a high-performance electrical contact designed to provide effective EMI shielding, grounding, and bonding in electronic systems. Manufactured from durable beryllium copper, these contact gaskets help maintain consistent electrical continuity between conductive surfaces while minimizing electromagnetic interference (EMI) and radio frequency interference (RFI).
D Contact Gaskets are widely used in electronic enclosures, communications equipment, aerospace systems, military electronics, industrial controls, and other applications requiring dependable grounding and shielding performance. Their spring-contact design helps maintain reliable contact pressure over repeated compression cycles, supporting long-term performance in demanding environments.
Available in multiple profiles and lengths, these Gaskets offer engineers flexibility when designing grounding paths and EMI shielding solutions. The resilient contact structure ensures dependable conductivity while accommodating dimensional variations and mechanical tolerances.
Whether used for grounding, bonding, or EMI containment, D Contact Gaskets provide a reliable solution for protecting sensitive electronics and maintaining electrical integrity in high-frequency applications.
Options
PP = plating code from plating code table below
X.XXX = Desired length
| Leader Tech Part Number | A (in) | B (in) | C (in) | D (in) | F (in) | G (in) | T (in) | Max Length (in) | Fingers at Max Length | Adhesive |
|---|---|---|---|---|---|---|---|---|---|---|
| Leader Tech Part Number | A (in) | B (in) | C (in) | D (in) | F (in) | G (in) | T (in) | Max Length (in) | Fingers at Max Length | Adhesive |
| 4-34D-PP-X.XXX | 0.040 | 0.358 | 0.310 | 0.130 | 0.040 | 0.020 | 0.0040 | 16 | 267 | N |
| 4-38D-PP-X.XXX | 0.050 | 0.380 | 0.310 | 0.062 | 0.050 | 0.025 | 0.0060 | 16 | 214 | N |
| 4-53D-PP-X.XXX | 0.050 | 0.530 | 0.470 | 0.220 | 0.050 | 0.025 | 0.0060 | 16 | 214 | N |
| 9-78D-A-PP-X.XXX | 0.090 | 0.780 | 0.660 | 0.310 | 0.062 | 0.031 | 0.0100 | 16 | 172 | N |
| 9-78D-PP-X.XXX | 0.050 | 0.780 | 0.660 | 0.310 | 0.062 | 0.031 | 0.0100 | 16 | 172 | N |
| Leader Tech Part Number | A (mm) | B (mm) | C (mm) | D (mm) | F (mm) | G (mm) | T (mm) | Max Length (mm) | Fingers at Max Length | Adhesive |
|---|---|---|---|---|---|---|---|---|---|---|
| Leader Tech Part Number | A (mm) | B (mm) | C (mm) | D (mm) | F (mm) | G (mm) | T (mm) | Max Length (mm) | Fingers at Max Length | Adhesive |
| 4-34D-PP-X.XXX | 1.02 | 9.09 | 7.87 | 3.30 | 1.02 | 0.51 | 0.102 | 406 | 267 | N |
| 4-38D-PP-X.XXX | 1.27 | 9.65 | 7.87 | 1.57 | 1.27 | 0.64 | 0.152 | 406 | 214 | N |
| 4-53D-PP-X.XXX | 1.27 | 13.46 | 11.94 | 5.59 | 1.27 | 0.64 | 0.152 | 406 | 214 | N |
| 9-78D-A-PP-X.XXX | 2.29 | 19.81 | 16.76 | 7.87 | 1.57 | 0.79 | 0.254 | 406 | 172 | N |
| 9-78D-PP-X.XXX | 1.27 | 19.81 | 16.76 | 7.87 | 1.57 | 0.79 | 0.254 | 406 | 172 | N |
| Plating Code | Plating | Specification |
|---|---|---|
| BD | As Heat treated | As Heat Treated with Nitrogen |
| AU | Gold | ASTM B488, TYPE I, CODE C, CLASS 1.25 PRECEDED BY AN UNDERCOAT OF AT LEAST .000047" OF COPPER PER SAE-AMS2418 AND AT LEAST .000047" OF NICKEL PER SAE-AMS-QQ-N-290 |
| AG | Silver, Bright | ASTM B700, TYPE 2, GRADE B, CLASS N .0001" MIN PRECEDED BY A NICKEL UNDERCOAT AT LEAST .000039" THICK PER SAE-AMS-QQ-N-290 |
| MAG | Silver, Matte | ASTM B700, TYPE 2, GRADE A, CLASS N .0001" MIN PRECEDED BY A NICKEL UNDERCOAT AT LEAST .000039" THICK PER SAE-AMS-QQ-N-290 |
| CDC | Cadmium Chromate, Clear | ASTM B766, CLASS 5, TYPE III |
| CDY | Cadmium Chromate, Yellow | ASTM B766, CLASS 5, TYPE II |
| NI | Electroless Nickel RoHS | ASTM B733, TYPE IV, SC1, CLASS 1 |
| SN | Tin, Bright | ASTM B545, CLASS A PRECEDED BY A NICKEL UNDERCOAT AT LEAST .00005" THICK PER SAE-AMS-QQ-N-290 |
| ST | Tin, Matte | ASTM B545, CLASS A PRECEDED BY A NICKEL UNDERCOAT AT LEAST .00005" THICK PER SAE-AMS-QQ-N-290 |
| SNPB | Tin Lead | ASTM B 579, SC2 PRECEDED BY AN UNDERCOAT OF AT LEAST .000098" OF COPPER PER SAE-AMS2418 AND AT LEAST .000098" OF NICKEL PER SAE-AMS-QQ-N-290 |
| SU | Solderable Unplated | - |
| ZNC | Zinc, Clear | ASTM B633, SC1, TYPE III |
| ZNY | Zinc, Yellow | ASTM B633, SC1, TYPE II |