DM 821 - FORWARD VOLTAGE MEASURING DEVICE FOR POWER SEMICONDUCTORS

DM 821 - FORWARD VOLTAGE MEASURING DEVICE  FOR POWER SEMICONDUCTORS

Features

  • Durchlassspannung **VCE**
  • bis 9,6 V mit Auflösung 0,01 mV
  • Laststrom **IL** wahlweise als Trapezimpuls oder Sinushalbwelle, einstellbar in Vielfachen von 0,1 A, im Bereich 50 bis 10.000 A
  • Lastimpulsbreite, einstellbar in Vielfachen von 1 µs, im Bereich 100 bis 10.000 µs
  • Gatestrom, einstellbar in Vielfachen von 1 mA, im Bereich 10 bis 5.000 mA
  • Gatespannung, einstellbar in Vielfachen von 0,1 V, im Bereich 1,0 bis 20,0 V

Data Sheet

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Description

The test device DM 821 is used to measure the forward voltage of power semiconductors.

It has been designed for integration into an automatic test system and has neither displays nor manual operating elements. Three LEDs provide information about the operating status of the device. (READY, RUNNING, INVALID).

The DM 821 is controlled via serial interface or via Ethernet (optional).

To determine the forward voltage of semiconductors, the specimen is tested with a load current pulse of up to 10,000 A.

Thereby, the test current is taken out of a capacitor bank within the device.

According to quantity of the test current, a recovery period of max 500 ms is necessary to recharge this unit. After this time, the device is ready for a new test.

The internal current measurement is carried out by shunts.

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Data Sheet PDF