Transient Voltage Suppressors (TVS)
Overview
Microsemi Corporation (MSCC) is a world leader in the design, fabrication, qualification, and supply of Transient Voltage Suppressors (TVS). TVS diodes provide critical protection by going into avalanche breakdown within no more than a few nanoseconds after a strike, clamping the transient voltage, and routing its current to the ground.Applications include military and medical equipment, telecommunications, computers and their peripherals. Microsemi also provides protection to the electronics of engine control systems in the sophisticated avionics and aerospace industries. Between 2,000 and 5,000 Microsemi TVS devices have been deployed, per plane, across all major commercial airframes that are now in use throughout the industry. The company's TVS products are used in various flight-critical applications including flight control systems, multiple engine control units, and actuator controls, as well as a variety of power distribution, environmental control, communications and instrumentation systems.
The company offers a broad portfolio of both uni- and bi-directional discreet plastic TVS devices with power levels from 600W to 130kW. The qualification test plans and reliability monitoring provided for all these products are in line with the best industry standard practices.

Key Features
- Wide voltage and power range of both unidirectional and bi-directional TVS devices
- Industry-leading applications support and solutions for DO-160 and special requirements
- Innovative packaging technology
- Low capacitance signal protection
- Controlled die foundries, assembly, and screening locations
- Extensive electrical test capability and continuous reliability monitoring
Non-Hermetic Families
Non-Hermetic Packages
Family | Rated Standoff Voltage | Breakdown Voltage (min) | Peak Pulse Power Rating | SMD/Axial | Packages |
MDA3KP6.0A - MDA3KP40A | 6.0V-40V | 6.67V-44.4V | 3,000W | SMD | 16 Pin Dual SIP |
MSMB 5.0A - MSMB 170CA | 5.0V-170V | 6.4V-189V | 600W | SMD | DO-214AA, DO-215AA |
MSMC 5.0A - MSMC 170CA | 5.0V-170V | 6.4V-189V | 1.5kW | SMD | DO-214AB, DO-215AB |
MSMC LCE6.5A - MSMC LCE170A | 6.5V-170V | 7.22V-189V | 1.5kW | SMD | DO-214AB, DO-215AB |
MSML 5.0A - MSML 170CA | 5.0V-170V | 6.4V-189V | 3kW | SMD | DO-214AB, DO-215AB |
PLAD6.5KP | 10V-48V | 11.1V-189V | 6.5kW | SMD | mini-PLAD |
PLAD7.5KP | 10V-48V | 11.1V-189V | 7.5kW | SMD | mini-PLAD |
PLAD15KP | 7.0V-200V | 7.78V-222V | 15kW | SMD | PLAD |
MPLAD18KLP7.0A - MPLAD18KP200CA | 7.0V-200V | 7.78V-222V | 18kW | SMD | PLAD |
PLAD30KP | 14V-400V | 15.6V-444V | 30kW | SMD | PLAD |
MPLAD36KP14A - MPLAD36KP400CA | 4V-400V | 15.6V-444V | 36kW | SMD | PLAD |
P4KE | 5.8V-342V | 6.45V-380V | 400W | Axial | DO-41[DO-204AL] |
P6KE | 5.8V-171V | 6.45V-190V | 600W | Axial | T-18 |
M1.5KE6.8A - M1.5KE400CA | 5.8V-324V | 6.45V-380V | 1.5kW | Axial | Case 1 |
LCE | 6.5V-170V | 7.22V-189V | 1.5kW | Axial | Case 1 |
M15KP22A – M15KP280CA | 22V-280V | 24.4V-311V | 15kW | Axial | Case 5A [DO-204AR] |
RT100KP | 40V-400V | 44.4V-444V | 100kW | Axial | Case 5A [DO-204AR] |
P5KE | 5.0V-170V | 6.4V-189V | 500W | Axial | DO41 [DO-204AL] |
SMBJSAC | 5.0V-75V | 7.60V-83.3V | 500W | SMD | DO-214AA |
RT130KP | 275V-295V | 300V | 130kW | Axial | Case 5A [DO-204AR] |
RT65KP | 48V-75V | 53.3V-83.3V | 65kW | Axial | Case 5A [DO-204AR] |
UPT/UPTB | 5.0V- 48V | 6.0V- 54V | 1000W (8/20us) | SMD | Powermite 1 [DO-216AA] |
MUPT/UPTB | 5.0V-48V | 6.0V -54V | 1000W (8/20us) | SMD | Powermite 1 [DO-216AA] |
15KPA17e3 - 15KPA280CAe3 | 17V- 280V | 18.99V- 312.8V | 15kW (10/1000us) | Axial | P600 (R6) |
USBQNM504 B USBQNM504 U |
3.3V- 24V | 4.0V-26.7V | 500W (8/20us) | SMD | QFN |
SMAJ | 5.0V- 440V | 4.4V- 492V | 400W (10/1000us) | SMD | SMAJ [DO-214AC] |
SMDA SB508 B USB508 U SMDB SM16 USB504 U USB504 B |
3.3V- 36V | 4.0V- 26.7V | 300/500W (8/20us) | SMD | SO8, SO14, SO16, SOT23, SOT143 |
SAC5.0-SAC50 | 5V-50V | 7.6V-55.5V | 500W | Axial, SMD | DO-41 |
Hermetic Families
Hermetic Packages
Family | Rated Standoff Voltage VWM | Breakdown Voltage VBR (min) | C (pF) | Type | Peak Pulse Power Rating (10/1000μs pulse) | SMD/Axial | Packages |
1N5555-1N5558 | 30.5V-175V | 33V-191V | Unidirectional | 1500W | Axial | DO-13 [DO-202AA] | |
1N5629 - 1N5665A | 5V-171V | 6.12V-190V | Unidirectional | 1500W | Axial | DO-13 [DO-202AA] | |
1N6036 - 1N6072A | 5.5V-185V | 6.75V-209V | Bidirectional | 1500W | Axial | DO-13 [DO202AA] | |
1N5610 - 1N5613 | 30.5-175V | 33V-191V | Unidirectional | 1500W | Axial, SMD | G, G SQ-MELF | |
1N6103A-1N6137A | 5.7V-152V | 7.13-190V | Bidirectional | 500W | Axial, SMD | B, B SQ-MELF | |
1N6138-1N6173 | 5.2V-152V | 6.46V-190V | Bidirectional | 1500W | Axial, SMD | C, C SQ-MELF | |
1N6461-1N6468 | 5V-51.6V | 5.6V-54V | Unidirectional | 500W | Axial, SMD | B, B SQ-MELF | |
1N6469-1N6476 | 5V-51.6V | 5.6V-54V | Unidirectional | 1500W | Axial, SMD | G, D-5C | |
1N8149-1N8182 | 6.8V-170V | 7.79V-190V | 4 | 150W | Axial | A | |
1N8149US-1N8182US | 6.8V-170V | 7.79V-190V | 4 | 150W | SMD | A SQ-MELF | |
LC6.5-LC170A | 6.5V-170V | 7.22V-189V | 90-100 | Unidirectional | 1500W | Axial, Axial, SMD, SMD | DO-13[DO-202AA], 1, DO-215AB, DO-214AB |
Typical Applications
- Defense
- Medical
- Communications
- Computers and their peripherals
- Satellite Electrical Power Systems
- Commercial Aviation Engine Systems & Controls
Resources
TVS Catalogs and Package Selection
- High-Reliability Non-Hermetic TVS, MOSFET, IGBT and Rectifier Product Catalog
- TVSarray Selector and Design Guide
- Powermite Surface Mount Power Packages
TVS Datasheets
Select the proper TVS product family at the TVS Families tab.
TVS Application Notes
- Micronote 101 - A Primer on TVS Devices (154.88 kB)
- Micronote 102 - An Introduction to TVS Devices (105.25 kB)
- Micronote 103 - What is a TVS? (554.99 kB)
- Micronote 104 - Using the Power vs Time Curve (398.23 kB)
- Micronote 105 - What is a Thyristor Surge Protector Device (138.65 kB)
- Micronote 106 - Crowbars and Clamps (588.41 kB)
- Micronote 107 - Cross Referencing TVS Devices (592.15 kB)
- Micronote 108 - Determining Clamping Voltages for Pulse Currents (269.29 kB)
- Micronote 109 - Protecting from ESD (118.7 kB)
- Micronote 110 - Parasitic Capacitance in TVS
- Micronote 111 - Parasitic Lead Inductance in TVS (563.92 kB)
- Micronote 112 - Series Stacking TVS devices for Higher Current (520.31 kB)
- Micronote 113 - Parallel Stacking TVS devices for Higher Current (931.99 kB)
- Micronote 114 - Derating TVS devices for Higher Junction Temp (897.87 kB)
- Micronote 115 - Derating TVS at Elevated Temp for varying Pulse Widths (917.96 kB)
- Micronote 116 - Protection at a Transformer (689.06 kB)
- Micronote 117 - Protecting USB Data I/O Ports (166.32 kB)
- Micronote 118 - TVS/Chip Product Overview (243.47 kB)
- Micronote 120 - Selecting TVS with PPP and Waveform Considerations (72.14 kB)
- Micronote 121 - Protecting Data I/O ports with TVSArrays (216.08 kB)
- Micronote 122 - Transient Protection across High Data Rate & RF Lines (349.47 kB)
- Micronote 123 - Effective use of Space Saving TVSArrays (38.93 kB)
- Micronote 125 - How to Select a Transient Voltage Suppressor (39.1 kB)
- Micronote 126 - Lightning Protection for Aircraft per RTCA/DO-160D for ARINC 429 Protocol (320.37 kB)
- Micronote 127 - Lightning Protection for Aircraft Electrical Systems (258.96 kB)
- Micronote 128 - Unidirectional/Bi-Directional TVS Differences (157.45 kB)
- Micronote 129 - Upscreening Commercial TVS Diodes for Avionics and Robust Environments or Applications (94.68 kB)
- Micronote 130 - Overall TVS Selection (149.43 kB)
- Micronote 132 - Aircraft Lightning Protection/DIRECTselect Method (3.6 MB)
- Micronote 133 - Repetitive Surge on Transient Voltage Suppressors (308.74 kB)
- Micronote 134 - Zeners and TVSs: Can Either Device Be Used For The Same Applications (128.12 kB)
- Micronote 135 - Failure Mechanisms For Transient Voltage Suppressors (124.48 kB)
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