Adding Kapton (Polyimide) Tape To To-247-3 And -4 Devices - Keysight PD1500A Installation And Use Manual

Using the Device Heater

Adding Kapton (polyimide) Tape to TO-247-3 and -4 Devices

Keysight recommends wrapping one layer of Kapton (polyimide) tape (for
example, Keysight part number 0460-3128, 0.75 inch wide, 2.7 mil thick) around
the TO-247 device before attaching the heater bracket.
TO247
Device
Figure 25 Adding Kapton Tape to a TO-247 Device
58
Hot Surface; DO NOT Touch! When the PD1500A device heater is
used to heat the DUT, it becomes very hot. Do not touch the
heater, clamp, or DUT. Do not allow flammable material (such as
paper) to come into contact with the heater while it is hot.
Inspect the Heater assembly before every use. If the assembly
shows any sign of wear or is cracked, discard it immediately and
obtain a replacement. The metal clamp contacts the FET Drain or
IGBT Collector; if the heater assembly is damaged, it may contact
the metal clamp and apply a very high voltage to the heater
circuitry causing damage.
Kapton tape
around TO247
Device
Heater and
clamp around
device
Keysight PD1500A Double-Pulse Test System