LCR Meter 6621 Series
1/3/5/10/20/30MHz

Application

The Ideal LCR Meter for Component Sorting Systems

6621 LCR Meter is capable of displaying up to four measurement parameters simultaneously. It supports concurrent AC and DC measurements.

6621 Compact Design – 2U Height for Flexible ATE Integration

The 6621 LCR Meter features a compact form factor with a 2U height, allowing easy integration into automated test equipment (ATE) rack systems and significantly saving system space.

Supports Open, Short, High-Frequency Load, and Spot-Frequency Load Calibration

Before measurement, perform open, short, high-frequency load, and spot-frequency load calibration to eliminate errors caused by test leads and measurement circuitry.

• Open Calibration
  Performed before measuring capacitors to eliminate effects of test leads and circuit stray capacitance.
• Short Calibration
  Performed before measuring inductors to remove the influence of test leads and equivalent series capacitance.
• High-Frequency Load Calibration
  Compensates for lead and circuit parasitics at high frequencies, improving measurement accuracy.
• Spot-Frequency Load Calibration
  Uses a known standard component at a specific frequency to calculate correction factors and ensure result reliability.

6621 Support The List Mode
50 groups of list mode setting (Each group contains up to 15 steps).

Precision Calibration, Automatic Level Control (ALC), Selectable Output Impedance (25 Ω / 100 Ω)
Utilizes automatic balancing bridge measurement technology, supporting both 25Ω and 100Ω output impedance modes to meet users'
requirements for compatibility with other instruments.

6621 supports AC signal level enhancement (optional FX-LR0001)
According to the JIS C 5101-1-1998 standard, AC test signal levels must be properly regulated when measuring MLCC capacitance. LCR meters should enable Automatic Level Control (ALC) to maintain a stable signal level and correct any deviation to match the user-defined voltage.
For enhanced accuracy, the optional external AC level compensation box (FX-LR0001) can be used to ensure stable output that accurately reflects the DUT characteristics.

Supports Built-in DC Bias Measurement (Optional OP-662102)

In electronic circuit design, capacitors are essential for filtering, decoupling, energy storage, and voltage regulation. However, their actual performance is affected by capacitance drop under DC bias. When a DC voltage is applied, the internal electric field suppresses dielectric polarization—particularly in high-k ceramic materials—leading to a significant reduction in capacitance.

If this effect is overlooked in power modules, decoupling, DC-DC converters, or high-speed communication systems, it may result in poor ripple suppression, instability, or degraded EMI performance.

The optional OP-662102 module provides a built-in ±12 V DC bias function for evaluating MLCCs under DC bias, ensuring sufficient capacitance for reliable system operation.

An external DC bias measurement solution is also available, supporting bias voltages of ±40 V, ±200 V, and ±2000 V via optional external DC bias boxes.

Inductor manufacturers typically define the saturation current as the current value at which the inductance decreases by a specified percentage (e.g., 10% or 30%). This is because when a DC bias current is applied, the magnetic core begins to saturate, reducing its ability to store magnetic energy. As a result, the inductance drops significantly.
Measuring inductance under DC bias conditions is essential for accurately evaluating inductor performance in real-world applications such as power converters, where steady DC currents are present.

Inductor Saturation Current Measurement Solution- 6621+ Series

6621 LCR Meter can be equipped with a DC bias current source to measure the inductor's saturation current characteristics. The maximum
output current for superimposed bias is 640A, with a frequency response range of 100Hz to 10MHz. This setup allows for the verification and
testing of the change in inductance value when a DC bias current is applied to the inductor.

6621+ Series (LCR Meter with DC Bias Current Source)

• Saturation Current Curve Scan Analysis
• Temperature Rise Current Curve Scan Analysis
• Meter Mode
• List Mode

Accessories

Ordering Information

Standard
Power cord
選購配件
	F423906A	Kelvin Clip Leads (100cm)
	FX-000C12	SMD Test Fixture
	FX-000C10	Bottom Electrode SMD Test Fixture
	FX-000C11	SMD Tweezers Test Leads
	AX-PM0004	Material Testing Fixture
	F420003	External Voltage Bias (±40V/1MHz)
	F420005	External Voltage/ Current Bias (±40V/100mA)
	F420001	External Voltage Bias (±200V/1MHz)
	F420005	External Voltage Bias (±2000V/1MHz)
	F663001 A/B/C	F663001A BNC Test Leads (50cm)  F663001B BNC Test Leads (100cm)  F663001C BNC Test Leads (200cm)

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