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Home > Products > Circuit Protection > Transient Voltage Suppressors (TVS) > TVS Diodes

Vishay General Semiconductor - Diodes Division 5KP20A-E3/73

Name: 5KP20A-E3/73
Brand: Vishay General Semiconductor - Diodes Division
SKU: 5KP20A-E3/73
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 5KP20A-E3/73

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: TVS Diodes

Package:: P600, Axial

Datasheet:: 5KP20A-E3/73.pdf

Description:: TVS DIODE 20VWM 32.4VC P600

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Product details

Overview

5KP20A-E3/73 from Vishay General Semiconductor is a unidirectional TransZORB® transient voltage suppressor (TVS) diode in P600 package, designed for high-energy surge protection with 5000 W peak pulse power (10/1000 μs), 20 V stand-off voltage (V_WM), and 32.4 V clamping voltage (V_C) at 154 A peak pulse current. It protects MOSFETs, ICs, and sensor signal lines in automotive and industrial power supplies.

For engineers reviewing the 5KP20A-E3/73 datasheet, 5KP20A-E3/73 pinout, 5KP20A-E3/73 application, or 5KP20A-E3/73 equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 175 °C max junction temperature, RoHS-compliant matte tin leads, and P600 package thermal performance under repetitive surge conditions.

Technical Context

This TVS diode uses a glass-passivated P600 chip junction optimized for fast response (<1 ns) and low incremental surge resistance to clamp transients induced by inductive load switching or lightning surges. Its unidirectional configuration provides reverse-biased overvoltage protection only, with no forward conduction beyond 3.5 V at 100 A.

The device operates across -55 °C to +175 °C and is rated for 8.0 W steady-state power dissipation on an infinite heatsink at 75 °C lead temperature. Derating follows JEDEC-standard curves, supporting reliable operation in automotive engine control units and industrial motor drives where thermal management is constrained.

Key Specifications

Parameter	Value and Actual Design Meaning
V_WM	20 V - Maximum continuous reverse operating voltage before clamping begins; sets system-level DC bias margin.
V_BR min/max	22.2 V / 24.5 V at 5.0 mA - Breakdown threshold range ensures consistent turn-on across production lots.
V_C @ I_PPM	32.4 V at 154 A - Clamped voltage during 10/1000 μs surge; defines maximum stress on protected downstream circuitry.
P_PPM	5000 W - Peak pulse power handling capability; enables robust protection against IEC 61000-4-5 Level 4 surges.
T_J max	+175 °C - Maximum junction temperature; supports under-hood automotive placement without derating penalties.
Polarity	Unidirectional - Cathode marked by color band; suitable for DC bus or single-polarity rail protection only.
Package	P600 - Molded epoxy body with UL 94 V-0 rating; provides mechanical ruggedness and flame resistance in harsh environments.

Pinout & Package

P600 package: axial-leaded, molded epoxy body with cathode indicated by color band; leads are matte tin plated, solderable per J-STD-002 and JESD 22-B102, qualified to JESD 201 Class 1A whisker test.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Low-side connection point	Connected to ground or low-voltage reference; carries full surge current during clamping event.
Cathode	High-side connection point	Connected to protected line (e.g., 24 V rail); color band identifies this terminal for correct PCB orientation.

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive applications including engine control, body electronics, and ADAS subsystems.
5000 W peak pulse power	Withstands IEC 61000-4-5 4 kV surge tests without degradation when properly mounted on thermal mass.
Fast response time	<1 ns turn-on enables protection of nanosecond-scale logic and high-speed interface ICs.
Low incremental surge resistance	Minimizes V_C overshoot during high di/dt events, improving clamping precision for sensitive analog circuits.
UL 94 V-0 molding compound	Prevents flame propagation in enclosed enclosures-critical for EV battery management and industrial PLC housings.

Applications

Automotive Power Rail Protection	Industrial Motor Drive DC Bus
Use Scenario: Protecting 24 V supply rails in engine control modules from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between rail and chassis ground to clamp reverse-polarity spikes up to 120 V. Use Value: Prevents latch-up or destruction of microcontrollers and CAN transceivers during ISO 7637-2 Pulse 5a events.	Use Scenario: Safeguarding IGBT gate drivers and current-sense amplifiers in variable-frequency drives. IC Role / Device Role / Timing Role: Mounted across DC link capacitors to absorb regenerative energy surges during rapid deceleration. Use Value: Limits voltage overshoot to ≤32.4 V, avoiding gate oxide breakdown in 600 V-class IGBTs.
Telecom Power Supply Output	Sensor Signal Line Protection
Use Scenario: Securing +48 V telecom rectifier outputs against lightning-induced surges on central office equipment. IC Role / Device Role / Timing Role: Primary overvoltage clamp on secondary-side DC output, coordinated with upstream MOVs. Use Value: Maintains output regulation during 10/1000 μs surges up to 5 kA, meeting GR-1089-CORE Level 3 requirements.	Use Scenario: Shielding analog outputs of pressure/temperature sensors in factory automation systems. IC Role / Device Role / Timing Role: Low-capacitance (≈100 pF) shunt device on 0–5 V or 4–20 mA signal paths. Use Value: Clamps ESD strikes (IEC 61000-4-2 ±8 kV contact) without distorting millivolt-level sensor signals.

Automotive Power Rail Protection

Industrial Motor Drive DC Bus

Use Scenario: Protecting 24 V supply rails in engine control modules from load dump and alternator ripple transients.

IC Role / Device Role / Timing Role: Unidirectional TVS placed between rail and chassis ground to clamp reverse-polarity spikes up to 120 V.

Use Value: Prevents latch-up or destruction of microcontrollers and CAN transceivers during ISO 7637-2 Pulse 5a events.

Use Scenario: Safeguarding IGBT gate drivers and current-sense amplifiers in variable-frequency drives.

IC Role / Device Role / Timing Role: Mounted across DC link capacitors to absorb regenerative energy surges during rapid deceleration.

Use Value: Limits voltage overshoot to ≤32.4 V, avoiding gate oxide breakdown in 600 V-class IGBTs.

Telecom Power Supply Output

Sensor Signal Line Protection

Use Scenario: Securing +48 V telecom rectifier outputs against lightning-induced surges on central office equipment.

IC Role / Device Role / Timing Role: Primary overvoltage clamp on secondary-side DC output, coordinated with upstream MOVs.

Use Value: Maintains output regulation during 10/1000 μs surges up to 5 kA, meeting GR-1089-CORE Level 3 requirements.

Use Scenario: Shielding analog outputs of pressure/temperature sensors in factory automation systems.

IC Role / Device Role / Timing Role: Low-capacitance (≈100 pF) shunt device on 0–5 V or 4–20 mA signal paths.

Use Value: Clamps ESD strikes (IEC 61000-4-2 ±8 kV contact) without distorting millivolt-level sensor signals.

Equivalent & Alternatives

The following parts are listed as comparable options for similar transient voltage suppression applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SMBJ20A	600 W peak power, SMC package, lower I_PPM (32.4 A), higher V_C (34.4 V)	Not AEC-Q101 qualified; limited to commercial-grade consumer/industrial use	Select when board space is constrained and surge energy is ≤100 mJ.
1.5KE20A	1500 W peak power, DO-201 package, V_C = 30.0 V at 50 A, non-AEC-Q101	Lacks automotive qualification and thermal robustness for under-hood deployment	Choose for cost-sensitive legacy designs where 5 kA surge immunity is not required.

Compared with SMBJ20A and 1.5KE20A, the 5KP20A-E3/73 delivers 3.3× and 3.3× higher peak pulse power respectively, maintains AEC-Q101 compliance for automotive use, and sustains clamping performance at elevated ambient temperatures due to its P600 thermal mass and 175 °C T_J rating.

Availability

5KP20A-E3/73 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial motor drive DC bus safeguarding, and telecom rectifier output stabilization requiring stable component supply across multi-year production cycles.

Supply support for 5KP20A-E3/73 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, TVS devices, and optoelectronics with emphasis on reliability and automotive-grade validation.

The 5KP series was engineered specifically for high-energy transient suppression in automotive and industrial power systems, targeting replacement of crowbar circuits while enabling fuse/breaker coordination during overvoltage events.

FAQ

What is the clamping voltage of the 5KP20A-E3/73 under a 10/1000 μs surge?

The 5KP20A-E3/73 clamps to a maximum of 32.4 V at its rated peak pulse current of 154 A under a 10/1000 μs waveform. This value is guaranteed per JEDEC test conditions and defines the upper voltage limit imposed on protected circuitry during surge events. The 5KP20A-E3/73 achieves this with low incremental surge resistance, minimizing overshoot beyond the specified V_C.

Is the 5KP20A-E3/73 suitable for automotive applications?

Yes, the 5KP20A-E3/73 is AEC-Q101 qualified and rated for operation from -55 °C to +175 °C, making it suitable for under-hood and powertrain applications. Its P600 package provides thermal robustness needed for engine control units and battery management systems. The 5KP20A-E3/73 meets automotive surge immunity standards including ISO 7637-2 when correctly mounted with adequate copper pour.

What does the "E3/73" suffix indicate in 5KP20A-E3/73?

The "E3" denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads qualified to JESD 201 Class 1A whisker testing. The "/73" specifies packaging in 73 mm tape-and-reel format-distinct from /54 (13″ reel). Both suffixes confirm compliance with Vishay's material categorization per doc. 99912 and UL 94 V-0 flammability rating for the 5KP20A-E3/73.

How does the 5KP20A-E3/73 differ from bidirectional TVS diodes?

The 5KP20A-E3/73 is unidirectional only, providing protection against reverse-polarity transients on positive DC rails. Unlike bidirectional variants, it conducts in forward bias up to 3.5 V at 100 A but does not suppress positive-going surges on negative rails. This makes the 5KP20A-E3/73 ideal for single-polarity systems like 12 V/24 V automotive supplies, where polarity is fixed and crowbar-like behavior is acceptable.

Can the 5KP20A-E3/73 replace a 1.5KE20A in existing designs?

No direct drop-in replacement: the 5KP20A-E3/73 has different package (P600 vs. DO-201), higher thermal mass, and 3.3× greater peak pulse power (5000 W vs. 1500 W). While both share 20 V V_WM, layout changes are required due to larger P600 footprint and lead spacing. The 5KP20A-E3/73 is preferred for new automotive or high-reliability industrial designs demanding higher surge immunity.

5KP20A-E3/73 Specifications

Product attributes: Attribute value

Manufacturer:: Vishay General Semiconductor - Diodes Division

Package/Case:: P600, Axial

Series:: TransZorb®

Packaging:: Tape & Box (TB)

Product Status:: Active

Type:: Zener

Unidirectional Channels:: 1

Bidirectional Channels:: -

Voltage - Reverse Standoff (Typ):: 20V

Voltage - Breakdown (Min):: 22.2V

Voltage - Clamping (Max) @ Ipp:: 32.4V

Current - Peak Pulse (10/1000µs):: 154A

Power - Peak Pulse:: 5000W (5kW)

Power Line Protection:: No

Applications:: General Purpose

Capacitance @ Frequency:: -

Operating Temperature:: -55°C ~ 175°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: P600

5KP20A-E3/73 FAQ

1.How can I place an order for 5KP20A-E3/73 through Aetrix?

Please submit a Request for Quotation (RFQ) for 5KP20A-E3/73 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for 5KP20A-E3/73 reliable?

The price and inventory of 5KP20A-E3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5KP20A-E3/73 is usually 5 days.

3.What payment methods are accepted for 5KP20A-E3/73?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KP20A-E3/73 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 5KP20A-E3/73?

5KP20A-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 5KP20A-E3/73 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for 5KP20A-E3/73?

For technical support, including 5KP20A-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KP20A-E3/73 requirements.

6.How does Aetrix verify that 5KP20A-E3/73 is sourced from the original manufacturer or authorized distributors?

All 5KP20A-E3/73 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 5KP20A-E3/73 meets industry standards.

7.What is the process for return or replacement of 5KP20A-E3/73?

All 5KP20A-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 5KP20A-E3/73, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The 5KP20A-E3/73 part is unused and in its original packaging.

Return procedure for 5KP20A-E3/73:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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