Voltage Multipliers, Inc. Screening Guides The following screening procedures are suggested guides for assemblies and their components: HRP 101: HRP 102: HRP 103: HRP 104: HRP 105: Screening Guide for Discrete Diodes Screening Guide for Finished Bridge Rectifier Assemblies Screening Guide for Capacitors Used in Multiplier Assemblies Screening Guide for Resistors Used in Multiplier Assemblies Screening Guide for Multiplier Assemblies HRP 101: Discrete Diodes The following screening for discrete diodes is a guide for a suggested procedure. It can be modified or adjusted to suit requirements. This is taken from MIL-PRF-19500 Table IV, JANTX screening. 1) High Temperature Life (non-operating life/ stabilization bake MIL-STD-750) Method 1032 48 hrs @ +175°C 2) Temperature Cycling MIL-STD-750 Method 1051 Condition C 20 Cycles -65°C to +175°C 15 min. extremes No dwell @25°C 3) Interim Electrical 4) High Temperature Reverse Bias (HTRB) Forward Voltage Drop Leakage Current Method 1038 Condition A MIL-STD-750 5) Final Electrical MIL-STD-750 96 hrs min. @ TA=150°C and min. applied voltage at 80% of rated VR (TC or TL is optional) Method 4011 Method 4016 Method 4031 Method 4021 1 Forward Voltage Drop Leakage Current Reverse Recovery Time Peak Inverse Voltage Voltage Multipliers, Inc. HRP 102: Finished Bridge Rectifier Assemblies The following screening for bridge assemblies is a guide for a suggested procedure. It can be modified or adjusted to suit requirements. This is taken from MIL-PRF-19500 Table IV, JANTX screening. 1) High Temperature Life (non-operating life/ stabilization bake MIL-STD-750) Method 1032 24 hrs @ 125°C 2) Temperature Cycling MIL-STD-202 Method 107 Condition C 10 Cycles -55°C to +125°C 15 min. extremes 3) Interim Electrical 4) High Temperature Reverse Bias (HTRB) Forward Voltage Drop Leakage Current Method 1038 Condition A 24 hrs @ +125°C at 80% of VRWM MIL-STD-750 5) Final Electrical MIL-STD-750 Method 4011 Method 4016 Method 4021 Forward Voltage Drop Leakage Current Breakdown Voltage 6) Visual Mechanical Per Specification Per Specification Inspection 2 Voltage Multipliers, Inc. HRP 103: Capacitors Used in Multiplier Assemblies The following screening for capacitors is a guide for a suggested procedure. It can be modified or adjusted to suit requirements. Capacitors would be screened prior to assembly into a hi-rel multiplier application. 1) Visual Inspection Per Specification 2) High Temp Storage MIL-STD-750 3) Pre Electrical Capacitance Dissipation 4) Corona Test ≤ 100 Picocoulombs at Method 1032 48 hours @ TA = 150°C rated voltage 5) Temp Cycle MIL-STD-202 6) Post Electrical Method 107 5 Cycles, -55°C to +150°C 15 minutes at each extreme No dwell @ 25°C Capacitance Dissipation HRP 104: Resistors Used in Multiplier Assemblies The following screening for resistors is a guide for a suggested procedure. It can be modified or adjusted to suit requirements. Resistors would be screened prior to assembly into a hi-rel multiplier application. 1) Pre Electrical Voltage = rated @25°C Measurement current, resistance 2) Temperature Cycle MIL-STD-202 3) Post Electrical Voltage = rated @25°C Measurement current, resistance 4) Visual Inspection Surface under microscope for Method 107 5 Cycles, -55°C to +150°C 15 minutes at each extreme No dwell @ 25°C cracks, chips, etc. 3 Voltage Multipliers, Inc. HRP 105: Finished Multiplier Assemblies The following screening for multiplier assemblies is a guide for a suggested procedure. It can be modified or adjusted to suit requirements for a hi-rel multiplier application. 1) Pre-pot Visual MIL-STD-750 Method 2071 2) High Temp Life MIL-STD-750 Method 1032 48 hours @ TA =125°C 3) Temperature Cycling MIL-STD-750 Method 107 10 Cycles -55°C to +105°C 15 minutes at extremes 4) Pre-Electrical Voltage - in per spec Voltage - out per spec Current - out per spec Voltage ripple per spec 5) Burn-in 48 hours @ TA =85°C Voltage - out Current - out 6) Post Electrical Voltage - in per spec Voltage - out per spec Current - out per spec Voltage ripple per spec 4