Microtest 6630 Series LCR Meter

The Microtest 6630 Series is a high-frequency precision LCR meter delivering 0.05% basic accuracy across a frequency range of 10 Hz to 50 MHz for comprehensive impedance characterization of passive components, PCB structures, and materials. Available in multiple models with maximum frequencies of 1 MHz, 3 MHz, 5 MHz, 10 MHz, 20 MHz, 30 MHz, and 50 MHz, the 6630 Series scales from standard component testing to high-frequency RF inductor and capacitor characterization. Ultra-fast 3 ms measurement speed makes the 6630 an excellent choice for automated production line testing.

Measurement Parameters

Parameter	Symbol	Application
Impedance		Z
Admittance		Y
Inductance	L	Inductors, transformers, chokes
Capacitance	C	Capacitors (ceramic, electrolytic, film)
Resistance	R	Series and parallel resistance
DC Resistance	DCR	Winding resistance, contact resistance
Dissipation Factor	D	Capacitor dielectric loss
Quality Factor	Q	Inductor and capacitor Q characterization
ESR	ESR	Equivalent series resistance
Phase Angle	theta	Complex impedance phase analysis
Reactance	X	Inductive and capacitive reactance
Conductance	G	Parallel conductance
Susceptance	B	Parallel susceptance
Relative Permittivity	epsilon	Material dielectric characterization
Relative Permeability	mu_r	Magnetic material characterization

Feature	Specification
Frequency Range	10 Hz to 50 MHz (model dependent)
Basic Accuracy	0.05%
Measurement Speed	Up to 3 ms
Level Control	Automatic Level Control (ALC)
Output Impedance	25 ohm / 100 ohm (switchable)
Correction	Open/short/load compensation
Modes	Meter mode, list sweep mode
Comparator	Pass/fail with BIN classification
Interface	USB, LAN, GPIB (optional), handler

Automatic Level Control (ALC) maintains constant test signal amplitude at the DUT terminals regardless of impedance changes, ensuring consistent measurement conditions across the full frequency range. Switchable 25 ohm and 100 ohm output impedance options optimize measurement accuracy for different component types. Open circuit, short circuit, and load correction functions compensate for fixture parasitics, and BIN classification with comparator functions support automated component grading on production lines.

The extended frequency range up to 50 MHz enables characterization of high-frequency inductors, RF capacitors, EMI filter components, and PCB parasitic impedance at operating frequencies — measurements that lower-frequency LCR meters cannot perform. List sweep mode executes multi-frequency measurement sequences in a single pass, generating impedance-vs-frequency profiles for resonance detection and component modeling.

Watch the Microtest 6630 Series LCR Meter on YouTube

GSAS Micro Systems provides Microtest 6630 Series selection guidance, test fixture recommendations, and handler interface configuration for Indian component manufacturers and quality inspection laboratories.