Car Torsion Spring Jack
Automotive-oriented torsion spring jack built as two silver-plated cable lug terminals with vertical cylindrical female contact sockets; 100,000-cycle plug life.
Specifications
- Plating
- Gold, Silver
Description
The Car Torsion Spring Jack is the automotive-oriented member of the torsion spring family. The photographed form is a pair of silver-plated cable lug terminals, each with an integrated vertical cylindrical female contact socket. The vertical cylindrical socket mates with a straight round pin. The cable lug carries the power lead while the socket at the end accepts the pin, an arrangement suited to the vibration and thermal cycling of vehicle connectors, and the lug format is easy to install and replace.
Inside each cylindrical socket, elastic gold- or silver-plated spring wires are set at an angle to the bore. When the pin inserts, the wires deflect in the radial and axial directions and several wires contact the pin at once, giving multiple independent current paths and a low voltage drop; a single damaged wire leaves the path closed. The jack keeps the family's vibration and shock resistance, which matters for contacts mounted on a vehicle, and the multi-wire contact runs at low temperature rise under sustained current.
Cycle Life and Finishing
Cycle life is up to 100,000 with low insertion and extraction forces. Finish options are gold or silver plating. For selection, sizes run 1.0–18.0 mm, working current up to 700 A and contact resistance down to 0.1 mΩ, with a 1.5–30 mm bore range. Its linked applications are medical, telecom, electric vehicle, aerospace and high-speed rail systems.
Manufactured by Dongguan SISE (Spring-in-Spring) Electronics Co., Ltd., an ISO 9001 and IATF 16949 certified manufacturer of precision spring contacts, high-current connector terminals and EMI/RFI shielding since 2011.
Torsion Spring Family — Available Specifications
| Size (mm) | Mating pin (mm) | Leaf thickness (mm) | Leaf length (mm) | Working current (A) | Contact resistance (mΩ) | Insertion/extraction force (N) |
|---|---|---|---|---|---|---|
| 1.0 | 1.0 +0/-0.03 | 0.1 | 4.8 | 10 | 4.5 | 0.5–3 |
| 1.5 | 1.5 +0/-0.03 | 0.1 | 6 | 20 | 3 | 1–4 |
| 1.6 | 1.6 +0/-0.03 | 0.1 | 6 | 25 | 2.8 | 1–4 |
| 2.4 | 2.4 +0/-0.03 | 0.15 | 8 | 40 | 0.5 | 2–6 |
| 2.8 | 2.8 +0/-0.03 | 0.2 | 10 | 45 | 0.4 | 2–6 |
| 3.0 | 3.0 +0/-0.03 | 0.2 | 10 | 50 | 0.4 | 2–6 |
| 3.6 | 3.6 +0/-0.03 | 0.2 | 10 | 70 | 0.4 | 3–8 |
| 4.0 | 4.0 +0/-0.03 | 0.2 | 10 | 75 | 0.3 | 4–8 |
| 6.0 | 6.0 +0/-0.03 | 0.3 / 0.4 | 20 / 16 | 150 | 0.3 | 5–12 |
| 8.0 | 8.0 +0/-0.03 | 0.4 / 0.4 | 20 / 16 | 250 | 0.3 | 15–25 |
| 10.0 | 10.0 +0/-0.05 | 0.4 | 18 | 300 | 0.2 | 15–30 |
| 12.0 | 12.0 +0/-0.05 | 0.5 | 25 | 400 | 0.1 | 25–45 |
| 14.0 | 14.0 +0/-0.05 | 0.5 | 33 | 500 | 0.1 | 25–45 |
| 16.0 | 16.0 +0/-0.05 | 0.5 | 31 | 580 | 0.1 | 30–55 |
| 18.0 | 18.0 +0/-0.05 | 0.5 | 31 | 700 | 0.1 | 30–55 |