2290-PM-200

Model 2290-PM-200 Keithley Instruments 28775 Aurora Road Cleveland, Ohio 44139 1-800-935-5595 http://www.keithley.com Protection Module User's Guide Description The Model 2290-PM-200 protection module (PM) is a stand-alone module that protects certain lower-voltage source-measure units (SMUs) that are part of a testing configuration from damage by voltage sources that are greater than 220 V. Figure 1: Model 2290-PM-200 The protection module is for use with the following lower-voltage SMUs: • • • • • Model 2611B Single-Channel System SourceMeter® Instrument Model 2612B Dual-Channel System SourceMeter Instrument Model 2635B Single-Channel System SourceMeter Instrument Model 2636B Dual-Channel System SourceMeter Instrument Model 4200-SCS Semiconductor Characterization System SMUs: • Model 4200-SMU Medium Power Source-Measure Unit • Model 4210-SMU High Power Source-Measure Unit 071317001 / May 2015 *P071317001* 1 Model 2290-PM-200 Protection Module User's Guide The protection module is intended for use in applications where a device breakdown or other potential failure could connect the high-voltage output of the Model 2290-5 or Model 2290-10 high-voltage power supply instrument to a lower-voltage SMU. The Model 2290-PM-200 does not protect the Model 2601B Single-Channel System SourceMeter Instrument or the Model 2602B Dual-Channel System SourceMeter Instrument. Do not use the protection module with these source-measure instruments. To prevent damage to the Model 2290-PM-200 in the case of device failure, the current from all power sources, including SourceMeter instruments and power supplies, should be limited to 120 mA. The Model 2290-PM-200 protection module must be connected to protective earth terminals (safety grounds) using the supplied green-yellow ground cables (Model CA-568). Connection of ground cables to protective earth terminals is necessary for safety. Figure 2: Model 2290-PM-200 grounding The standard triaxial IN connectors are used to connect the SMU. Maximum clamped voltage on the IN connectors is 240 V DC. • All three triaxial terminals of the LO connector are shorted together and connected to chassis ground. As a result, the protection module shorts the LO of the SMU to ground. • The center conductor of the HI connector is HI and the inner shield is guard. The outer shield (shell) is chassis ground. 2 071317001 / May 2015 Model 2290-PM-200 Protection Module User's Guide There are two high-voltage coaxial connectors used for connection to the device under test (DUT). • The smaller OUT connector is intended for use in applications that include the Model 2290-5 high-voltage power supply only. This connector is rated to 5000 V. • The larger OUT connector is intended for use in applications that include the Model 2290-10 high-voltage power supply only. This connector is rated to 10000 V. Electrical characteristics • • • • Leakage: < 10 pA at 200 V typical DC current carrying capability: 100 mA maximum in unclamped condition Maximum protection active current: You must limit current to