The Keysight 16334A is designed for impedance evaluations of SMD. The minimum SMD size that this fixture is adapted to evaluate is 1.6(L) x 0.8(W)[mm]. The tweezer's contacts on this fixture makes it easy to hold the DUT. Compatible with Keysight 4263B, 4284A, 4285A, 4268A, 4288A, 4279A, E4980A