Keithley 8101-4TRX User Manual

4-pin transistor test fixture

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Keithley Instruments, Inc.

28775 Aurora Road

Cleveland, Ohio 44139

(440) 248-0400

Fax: (440) 248-6168

www.keithley.com

Overview

WARNING

The procedures contained in this User's Guide are intended for use by qualiﬁed service

personnel only. Do not perform these procedures unless qualiﬁed to do so. Failure to rec-

ognize and observe normal safety precautions could result in personal injury or death.

The 8101-4TRX test ﬁxture is a metal case with four female triaxial connectors (SMU1–4) and a latch on the outside

(see

Figure

1). Inside the test ﬁxture is one 4-pin device holder (transistor socket). The inner conductor of each triax connector

is wired to the closest pin on the 4-pin device holder (see Speciﬁcations at the end of this document). The inner shield of the

triax connectors are "no connects." The triax connectors' outer shield is connected to the test ﬁxture's metal case.

8101-4TRX 4-Pin Transistor Test Fixture

Figure 1

Test ﬁxture

Lid

SMU1

SMU2

Transistor socket

Latch

User's Guide

SMU4

SMU3

PA-863 Rev. A / 8-02

Page 1 Do not perform these procedures unless qualiﬁed to do so. Failure to rec- ognize and observe normal safety precautions could result in personal injury or death. The 8101-4TRX test ﬁxture is a metal case with four female triaxial connectors (SMU1–4) and a latch on the outside (see Figure 1).
Page 2 It is safe to use the test ﬁxture without an additional safety barrier if the connected instrument has a Safety Interlock that can disable any high voltage ranges capable of sourcing greater than 42V, such as the Keithley Model 4200.
Page 3 To operate and use Place a 2, 3, or 4 terminal device on the device holder. Note which device pin (from Step 1) is associated with the triax connection (SMU1, SMU2, SMU3, SMU4). Then for: • Model 4200 — Connect the appropriate SMU from the Model 4200 directly into each triax connector. •...
Page 4: Wiring Diagram
8101-4TRX 4-Pin Transistor Fixture Specifications CAPABILITIES Device Socket Configuration: 4-pin gold plated, Teflon transistor socket. Connector Type: 4 independent Triax connectors, center pin to device socket, no connect to guard (center shield). Maximum Signal Voltage: 42V peak, signal or guard to any signal or chassis.