The IF2 Interface option includes the hardware necessary to interface with test fixturing located at an automated device handler or prober. In addition to the basic capabilities of the IF1, the IF2 features user programmable component plugs. These allow external components to be connected between the various leads of the DUT under control of the test program. The component plugs and relays are contained in a small box designed to be mounted on or near the handler or prober. Each IF2 includes the IF1 Standard Interface. The IF2 is also available in the following configurations:

IF2P
The IF2P model includes all features of the IF2, specifically designed to test programmable uni-junction transistors (PUTs).

IF2S
The IF2S model includes all features of the IF2 with the added capability of programmable lead switching when connected between a member of the 36XXE family and a prober or handler. Controlled by the test program, the lead switching feature provides the flexibility to switch both force and sense of the tester's three Kelvined leads (i.e. source/emitter, drain/collector, and gate/base) for any combination at the IF2S output. This allows the test leads to be connected to the DUT for any possible device pin-out configuration, offering the advantage of using one test fixture per package style regardless of device pin-out.