| NO. | Project | Test conditions | Requirement |
| 3.1 | Contact Resistance | Applying astatic load twice the actuating force to the center of the stem,measurements shall be made with a 1 kHz small-current contact resistance meter. | ≤50mΩ |
| 3.2 | Insulation Resistance | Measurements shall be made following application of DC500V potintial across terminals and across terminals and frame for one minute. | ≥100MΩ |
| 3.3 | Dielectric voltage proof | AC500V(50Hz or60Hz) shall be applied across terminals and across terminals and frame for one minute. | No Breakdown, No Flying Fox |
| 3.4 | Insertion force | Fixed the base and the head, and exerted the specified pressure on the direction of the axis of the head. | 0.5~2.0 kgf |
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