Services

Electrical

Our diverse Electrical Laboratory capabilities include measurements from DC to 20 GHz. The equipment assigned to the laboratory is among the most accurate available for the specific measurements of interest. We believe it is the most comprehensive range of testing disciplines of any laboratory in our industry. A general overview of the services we provide includes, but is not limited to, the following:

  • Arc Resistance
  • Capacitance
  • Comparative Tracking Index (CTI)
  • Conductive Anodic Filament (CAF)
  • Conductivity
  • Crosstalk
  • Current Breakdown
  • Current Carrying Capability (to 300 Amps DC @ 30 Volts)
  • Delay
  • Dielectric Constant (Permittivity)/Dissipation Factor (Loss Tangent), 60 Hz to 20 GHz
  • Dielectric Strength (ASTM D149, up to 100 kV AC, rms)
  • Dielectric Withstanding Voltage (DWV)
  • Impedance and Time
  • Delay of Lines by TDR (Single-Ended and Differential)
  • Interconnection Resistance
  • Insulation Resistance
  • Leakage Current
  • Low Level DC Resistance
  • Measurements (4 Wire Kelvin Technique)
  • Power
  • Q (Resonance)
  • Surface Insulation Resistance (SIR)
  • Surface Resistivity
  • Velocity of Propagation
  • Volume Resistivity

The testing method generally used for characterizing Permittivity and Loss Tangent (Dielectric Constant and Dissipation Factor) at frequencies ranging from 1 GHz to 20 GHz is a Coplanar Stripline Resonator. The traditional coupling approach simply cannot cover such a wide frequency band. A new design using a Coplanar line to Stripline transition is used to solve this problem.

The center conductor of the Coplanar line is designed to overlap the Center Resonator line to provide enough coupling at low frequency. Since the Coplanar line is built on the top surface, the overlap length can be trimmed to satisfy the coupling requirements at high frequencies. The photo shows our state of the art Vector Network Analyzer being used to conduct S-Parameter Tests from 40 MHz to 20 GHz.


A partial view of one of our Multiple Electrical Test Stations showing a 50KV AC Dielectric Breakdown Tester and our Multilayer Board Inspection System (X-ray) in use.


Testing Station for Stripline test of Permittivity and Loss Tangent (Dielectric Constant and Dissipation Factor) at X-Band (8 to 12.4 GHz), showing various equipment including Spectrum Analyzers, Frequency Counters, Sweep Oscillator, Power Meters, etc. Measurements are made under actual stripline conditions using a resonant strip circuit, which is separated from the ground planes by sheets of the material to be tested.

© Copyright 2017 Pacific Testing Laboratories

IPC Member logoASTM International Member logo