DC Bias Current Test System

Authorized Microtest distributor in Germany

What is a DC bias current test system?

A DC bias current test system combines an impedance analyzer (6632/6632S) with cascaded DC bias current sources into a complete system — with bias currents up to 640 A.

Automated current and frequency sweeps
Magnetic saturation curve (Isat) and rated current curve (Irms) at the push of a button

Device Comparison

Microtest

DC Bias Current Test System – 6632+ Series

Output Current: 20A – 640A (per system)
Max. Frequency: 100Hz – 30MHz (per model)
Power Consumption: 320W / 640W
Software: PC Link (optional)

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Microtest

DC Bias Current Test System – 6632+ Series

Output Current: 20A – 640A (per system)
Max. Frequency: 100Hz – 30MHz (per model)
Power Consumption: 320W / 640W
Software: PC Link (optional)

Explore Product

Where is a DC bias test system used?

Wherever inductors are characterized under high direct current — from development to series release.

Storage chokes and power inductors
Transformers for power supplies and chargers
Components for e-mobility and renewable energy

Which accessories are recommended?

The system connects to the DUT via suitable fixtures and high-current accessories.

4-wire test fixtures (DIP/SMD) up to 320 A
Connect plates for cascading
PC Link software for analysis and documentation

What questions does the test answer?

The test system answers what datasheets leave open:

How much does inductance drop at real operating current?
Where is the saturation limit of the series?
Do component batches stay within tolerance?
Does the design maintain the required current margin?

Why Kust Elektronik?

Kust Elektronik delivers the complete system from a single source — including advice on the right configuration (6632+6210 through 6632+6243H).

Support with test strategy and limit definition
Integration into existing quality processes
Service, support, and long-term partnership

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