5-4 Keysight B1505A User’s Guide, Edition 12
Measurement Examples
Gate Charge Measurement
WARNING To prevent electrical shock and DUT damage, do not connect or disconnect the
DUT while the instrument is applying voltage or current.
When you touch the DUT after measurement, devise a countermeasure of
residual charge and heat to prevent electrical shock and burn. Use gloves and
any tool. Also have enough time for discharge and radiation.
Afin d’éviter toute décharge électrique et dommage MST, ne branchez ou
débranchez pas la sortie MST alors que l'appareil envoie de la tension ou du
courant.
Lorsque vous touchez le MST après la mesure, élaborez une contre-mesure de
la charge résiduelle et du chauffage afin d'éviter tout choc électrique et toute
brûlure. Utilisez des gants et des outils. Prévoyez également du temps pour la
décharge et la radiation.
Prepare a measurement as follows:
1. Connect the test fixture, the socket module, the adapter, and the required
accessories.
For more information, see the following sections:
• “N1259A Test Fixture” on page 3-9 and “Gate charge socket module
(N1259A-014)” on page 3-23
• “N1265A Ultra High Current Expander/Fixture” on page 3-33 and “Gate
charge socket module (N1265A-014)” on page 3-49
• “N1274A On-Wafer Gate Charge Measurement Adapter/Selector for 20 A/3
kV” on page 3-99
• “N1275A On-Wafer Gate Charge Measurement Adapter for N1265A” on
page 3-103
2. Prepare a DUT (device under test) and a current control device (current load
device) or a load resistor (resistive load).
The current control device must be a 3-pin inline package device which is
expected to have the same characteristics as DUT. If the device is not available,
use a load resistor. The resistor must satisfy the following specifications.
Resistance = Vr/Ir (Vr: rated voltage, Ir: rated current)
Peak power Vr × Ir × 1 ms
3. Turn the instrument on.
Do not connect the devices at this time.
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