Prologue to TVS Overvoltage Protection Devices

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Slide 1

Prologue to TVS Overvoltage Protection Devices

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Outline Product Families Part Number Conventions Axial Leaded P4KE, SA, SAC, P6KE 1.5KE, LCE 3KP, 5KP, SLD 15KPA, 20KPA, 30KPA AK6, AK10 Surface Mount SMAJ, P4SMA, SACB SMBJ, P6SMB, 1KSMB SMCJ, 1.5SMC SMDJ, 5.0SMDJ Overvoltage Protection The race is on Clamp versus Crowbar Key Parameters Unidirectional versus Bidirectional Peak Pulse Power PPPM Double Exponential Waveforms Reverse Stand-Off Voltage VR Breakdown Voltage VBR Clampin Voltage VC Peak Pulse Current IPP

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The Race is On! Overvoltage Protector Protected Circuit Overvoltage Event

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Transient Event V line Clamping Devices Crowbar Devices Trigger Voltage Clamp Voltage V line V line Delatch Clamping Devices versus Crowbar Devices

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Outline Product Families Part Number Conventions Axial Leaded P4KE, SA, SAC, P6KE 1.5KE, LCE 3KP, 5KP, SLD 15KPA, 20KPA, 30KPA AK6, AK10 Surface Mount SMAJ, P4SMA, SACB SMBJ, P6SMB, 1KSMB SMCJ, 1.5SMC SMDJ, 5.0SMDJ Overvoltage Protection The race is on Clamp versus Crowbar Key Parameters Unidirectional versus Bidirectional Peak Pulse Power PPPM Double Exponential Waveforms Reverse Stand-Off Voltage VR Breakdown Voltage VBR Clamping Voltage VC Peak Pulse Current IPP

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Key Parameters: Peak Pulse Power

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Key Parameters: Peak Pulse Power Double Exponential Waveforms Simulate actuated lightning occasions Rise time & rot time in microseconds 10 x 1000 8 x 20

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Bidirectional versus Unidirectional Bidirectional TVS Unidirectional TVS Voltage – Current (V-I) Curve Voltage is shown left to right Current is shown here and there

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+I I PP I T I R - V +V V R V BR V C - I Key Parameters: V R Reverse Standoff Voltage

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+I I PP I T I R - V +V V R V BR V C - I Key Parameters: V BR Breakdown Voltage

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+I I PP I T I R - V +V V R V BR V C - I Key Parameters: V C Max Clamping Voltage

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+I I PP I T I R - V +V V R V BR V C - I Key Parameters: I pp Peak Pulse Current

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Quiz Time !

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Question 1: True or False A TVS Diode is proposed to give consistent voltage direction to a circuit. FALSE

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Question 2: True or False A TVS Diode is a crowbar kind of gadget that conveys the secured line near ground potential. FALSE

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Question 3: True or False The consistent power rating of a TVS Diode can be found by duplicating the pinnacle passable heartbeat current by the clipping voltage. FALSE

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Question 4: True or False A bidirectional TVS Diode can be utilized on a DC line. Genuine

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Question 5: True or False A Unidirectional TVS Diode is symmetrical and has a similar clip voltage paying little heed to the bearing of current course through the part. FALSE

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Outline Product Families Part Number Conventions Axial Leaded P4KE, SA, SAC, P6KE 1.5KE, LCE 3KP, 5KP, SLD 15KPA, 20KPA, 30KPA AK6, AK10 Surface Mount SMAJ, P4SMA, SACB SMBJ, P6SMB, 1KSMB SMCJ, 1.5SMC SMDJ, 5.0SMDJ Overvoltage Protection The race is on Clamp versus Crowbar Key Parameters Unidirectional versus Bidirectional Peak Pulse Power PPPM Double Exponential Waveforms Reverse Stand-Off Voltage VR Breakdown Voltage VBR Clamping Voltage VC Peak Pulse Current IPP

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Part Numbering Conventions The main segment: Indicates the Peak Pulse Power or the bundle or both. The following part: Indicates either the V R or the ostensible V BR Both voltage traditions are industry norms. Offering both traditions is a basic driver for deals.

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Part Numbering Conventions V BR – Based Part Numbers Axial Leaded P4KE, P6KE 1.5KE, Surface Mount P4SMA, P6SMB, 1KSMB 1.5SMC V R – Based Part Numbers Axial Leaded SA, SAC, LCE 3KP, 5KP, SLD 15KPA, 20KPA, 30KPA AK6, AK10 Surface Mount SMAJ, SACB SMBJ, SMCJ, SMDJ, 5.0SMDJ

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Axial Leaded TVS Diodes DO-41 DO-15 DO-201 P-600 Available Axial Packages AK-6 AK-10

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DO-41 Axial TVS Diodes P4KE (400W)

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DO-15 Axial TVS Diodes P6KE (600W) SA (500W) SAC (500W, Low Cap) TVS Diode Isolation Diode

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DO-201 Axial TVS Diodes 1.5KE (1500W) LCE (1500W, Low Cap)

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P-600 Axial TVS Diodes 3KP (3000W) 5KP (5000W) 15KPA (15000W) 20KPA (20000W) 30KPA (30000W) SLD (2200W - 100x150000 uS Waveform)

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AK Series TVS Diodes AK6 (6000A – 8x20 uS Waveform) AK10 (10000A – 8x20 uS Waveform)

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Surface Mount TVS Diodes Available Surface Mount Packages DO-214AC (SMA J-Bend) DO-214AA (SMB J-Bend) DO-214AB (SMC J-Bend)

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SMA Surface Mount TVS Diodes SMAJ (400W) P4SMA (400W)

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SMB Surface Mount TVS Diodes SMBJ (600W) P6SMB (600W) SACB (500W, Low Cap) 1KSMB (1000W)

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SMC Surface Mount TVS Diodes SMCJ (1500W) 1.5SMC (1500W) SMDJ (3000W) 5.0SMDJ (5000W)

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Axial TVS Diode Summary

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Surface Mount TVS Diode Summary

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Final Exam !

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Question 1: True or False The spillage current of a TVS Diode is measured at its breakdown voltage. FALSE

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Question 2: True or False If a similar heartbeat current is permitted to move through both a low power and a powerful TVS Diode, the bracing voltage will be lower on the powerful gadget. Genuine

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Question 3: True or False If a thin 20µS current heartbeat is permitted to course through a TVS Diode, the permissible power level can be higher than the 10x1000µS power level demonstrated on the information sheet. Genuine

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Question 4: True or False The AK arrangement of TVS Diodes can deal with a million watts of force amid a transient occasion. Genuine

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Question 5: True or False TVS Diode part numbers dependably allude to the real breakdown voltage of the gadget. FALSE

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Thank You! Prologue to TVS Overvoltage Protection Devices

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