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

Vishay General Semiconductor - Diodes Division 5KP30A-E3/51

Name: 5KP30A-E3/51
Brand: Vishay General Semiconductor - Diodes Division
SKU: 5KP30A-E3/51
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 5KP30A-E3/51

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: TVS Diodes

Package:: P600, Axial

Datasheet:: 5KP30A-E3/51.pdf

Description:: TVS DIODE 30VWM 48.4VC P600

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Product details

Overview

5KP30A-E3/51 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), 30 V stand-off voltage (V_WM), and 48.4 V clamping voltage (V_C) at 103 A peak pulse current. It protects MOSFETs, ICs, and sensor signal lines in automotive and industrial power supplies.

For engineers reviewing the 5KP30A-E3/51 datasheet, 5KP30A-E3/51 pinout, 5KP30A-E3/51 application, or 5KP30A-E3/51 equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 175 °C max junction temperature, low incremental surge resistance, and RoHS-compliant matte tin-plated leads per J-STD-002.

Technical Context

This TVS diode operates as a voltage-clamping overvoltage protection device, triggered when reverse voltage exceeds its 33.3–36.8 V breakdown range (V_BR at 5 mA). Its glass-passivated P600 junction enables fast response (<1 ns) and stable clamping under repetitive 0.01% duty cycle surges.

It is rated for 5000 W peak pulse power with 10/1000 μs waveform, 8.0 W steady-state power dissipation on infinite heatsink at 75 °C, and withstands 600 A non-repetitive forward surge (8.3 ms half-sine). The 0.103 %/°C V_BR temperature coefficient ensures predictable voltage drift across –55 to +175 °C operation.

Key Specifications

Parameter	Value and Actual Design Meaning
V_WM	30 V - Maximum continuous reverse operating voltage before clamping begins
V_BR (min/max)	33.3 V / 36.8 V - Breakdown voltage range at 5 mA test current; defines precise turn-on threshold
V_C @ I_PPM	48.4 V - Clamped voltage at 103 A peak pulse current; limits downstream voltage stress
P_PPM	5000 W - Peak pulse power handling with 10/1000 μs waveform; supports high-energy transients
I_FSM	600 A - Non-repetitive forward surge rating (8.3 ms half-sine); enables crowbar replacement
T_J max.	+175 °C - Maximum junction temperature; supports under-hood automotive and high-temp industrial use
Polarity	Unidirectional - Cathode marked by color band; blocks forward conduction, clamps reverse surges only

Pinout & Package

5KP30A-E3/51 uses the axial-lead P600 package: molded epoxy body over glass-passivated junction, UL 94 V-0 rated, with matte tin-plated leads solderable per J-STD-002. Polarity is marked by cathode band; no active pin numbering-cathode and anode are defined by band position.

Pin/Terminal	Circuit Role	Design Meaning
Cathode (banded end)	Surge return path	Connected to protected circuit ground or low-impedance reference; carries full transient current during clamping
Anode (unbanded end)	Protected line connection	Connected to line being protected (e.g., DC bus, sensor output); reverse-biased during normal operation

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock per JESD22 standards
P600 glass passivated junction	Enables <1 ns response time and stable V_BR over lifetime, critical for fast-switching power supply protection
5000 W peak pulse power (10/1000 μs)	Handles high-energy lightning-induced or inductive-switching transients without failure or parameter shift
Low incremental surge resistance	Minimizes V_C overshoot during high di/dt events, improving clamping precision for sensitive 3.3 V/5 V logic
RoHS-compliant, JESD201 Class 1A whisker tested	Ensures long-term solder joint integrity in automated assembly and thermal cycling environments

Applications

Automotive Power Supply Protection	Industrial Motor Drive DC Bus
Use Scenario: Protecting 12 V/24 V battery-fed ECUs against load dump and alternator transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and regulator input to clamp surges up to ±100 V. Use Value: Withstands 5000 W pulses and 175 °C junction temperature, enabling under-hood placement without derating.	Use Scenario: Safeguarding IGBT gate drivers and MCU inputs from switching spikes in variable-frequency drives. IC Role / Device Role / Timing Role: Mounted across DC bus rails to absorb inductive kickback energy during IGBT turn-off. Use Value: 48.4 V clamping at 103 A limits voltage stress on 60 V-rated gate drivers, preventing false triggering or latch-up.
Telecom Line Card Surge Protection	Consumer Appliance Power Input
Use Scenario: Shielding Ethernet PHY interfaces and PoE injectors from ESD and lightning-induced surges on RJ45 ports. IC Role / Device Role / Timing Role: Placed on secondary side of isolation transformer to clamp common-mode transients before data line conditioning. Use Value: Fast response and low V_C preserve signal integrity on 100BASE-TX lines while meeting IEC 61000-4-5 Level 4 requirements.	Use Scenario: Protecting AC-DC adapter outputs in washing machines and HVAC controllers from mains-borne surges. IC Role / Device Role / Timing Role: Installed at secondary-side DC output to prevent overvoltage damage to microcontrollers and display drivers. Use Value: 30 V V_WM matches typical 24 V system rails; 5000 W rating absorbs repeated compressor startup spikes.

Automotive Power Supply Protection

Industrial Motor Drive DC Bus

Use Scenario: Protecting 12 V/24 V battery-fed ECUs against load dump and alternator transients per ISO 7637-2.

IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and regulator input to clamp surges up to ±100 V.

Use Value: Withstands 5000 W pulses and 175 °C junction temperature, enabling under-hood placement without derating.

Use Scenario: Safeguarding IGBT gate drivers and MCU inputs from switching spikes in variable-frequency drives.

IC Role / Device Role / Timing Role: Mounted across DC bus rails to absorb inductive kickback energy during IGBT turn-off.

Use Value: 48.4 V clamping at 103 A limits voltage stress on 60 V-rated gate drivers, preventing false triggering or latch-up.

Telecom Line Card Surge Protection

Consumer Appliance Power Input

Use Scenario: Shielding Ethernet PHY interfaces and PoE injectors from ESD and lightning-induced surges on RJ45 ports.

IC Role / Device Role / Timing Role: Placed on secondary side of isolation transformer to clamp common-mode transients before data line conditioning.

Use Value: Fast response and low V_C preserve signal integrity on 100BASE-TX lines while meeting IEC 61000-4-5 Level 4 requirements.

Use Scenario: Protecting AC-DC adapter outputs in washing machines and HVAC controllers from mains-borne surges.

IC Role / Device Role / Timing Role: Installed at secondary-side DC output to prevent overvoltage damage to microcontrollers and display drivers.

Use Value: 30 V V_WM matches typical 24 V system rails; 5000 W rating absorbs repeated compressor startup spikes.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SMBJ30A-E3/52	Lower peak power (600 W), smaller SMB package, same 30 V V_WM, but lower I_PPM (32.4 A) and V_C (48.4 V)	Suitable for board-level signal-line protection; not rated for AEC-Q101 or high-energy bus protection	Select when space-constrained PCB layout requires SMT mounting and surge energy is ≤600 W
1.5KE30A	Same V_WM/V_BR specs but lower P_PPM (1500 W), DO-201 package, no AEC-Q101 qualification	Limited to commercial-grade consumer electronics; lacks automotive thermal and reliability validation	Select for cost-sensitive non-automotive designs where 1500 W pulse handling suffices

Compared with SMBJ30A-E3/52 and 1.5KE30A, the 5KP30A-E3/51 delivers 3.3× higher pulse power and automotive qualification-critical for protecting high-current DC buses where sustained surge energy exceeds 1 kW and ambient temperatures exceed 125 °C.

Availability

5KP30A-E3/51 is available at Aetrix Electronics and suitable for automotive ECU design, industrial motor drive development, and telecom infrastructure projects requiring stable component supply and long-lifecycle support.

Supply support for 5KP30A-E3/51 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 ruggedized performance.

The 5KP series was engineered specifically for high-power transient suppression in automotive and industrial power systems-replacing crowbar circuits with robust, resettable clamping capable of surviving repeated 5 kW surges.

FAQ

What is the clamping voltage of the 5KP30A-E3/51 under maximum rated surge current?

The 5KP30A-E3/51 has a maximum clamping voltage (V_C) of 48.4 V at its rated peak pulse current (I_PPM) of 103 A, measured using the standard 10/1000 μs waveform. This value ensures downstream components see limited overvoltage during surge events. The 5KP30A-E3/51 maintains this clamping performance across its full operating temperature range and after repeated surges, provided thermal limits are observed.

Is the 5KP30A-E3/51 suitable for automotive applications?

Yes, the 5KP30A-E3/51 is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments. Its 175 °C maximum junction temperature, robust P600 package, and validated reliability testing (temperature cycling, humidity, mechanical shock) meet automotive-grade requirements. The 5KP30A-E3/51 is commonly deployed in engine control units, body control modules, and ADAS power supplies per ISO 7637-2.

What does the "-E3/51" suffix indicate in 5KP30A-E3/51?

The "-E3" suffix denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads meeting J-STD-002 solderability and JESD201 Class 1A whisker resistance. The "/51" specifies the packaging option: 500-piece bulk pack (as opposed to tape-and-reel codes like /54). This distinguishes it from AEC-Q101-qualified variants such as 5KP30AHE3/54, which carry the "HE3" suffix.

How does the 5KP30A-E3/51 differ from the 1.5KE30A in practical design?

The 5KP30A-E3/51 provides 5000 W peak pulse power versus 1500 W for the 1.5KE30A-making it suitable for high-energy bus protection where the latter would fail catastrophically. It also features AEC-Q101 qualification, higher I_FSM (600 A vs. 100 A), and superior thermal capability (175 °C vs. 150 °C). The 5KP30A-E3/51 is not a drop-in replacement due to larger P600 footprint and different lead spacing.

Can the 5KP30A-E3/51 be used in bidirectional configurations?

No, the 5KP30A-E3/51 is unidirectional only, with polarity indicated by a cathode band. It conducts and clamps only in reverse bias. For bidirectional protection, two 5KP30A-E3/51 devices must be connected in series opposition, or a dedicated bidirectional part like 5KP30CA should be selected. Using a single 5KP30A-E3/51 in bidirectional mode risks forward conduction and failure during positive transients.

5KP30A-E3/51 Specifications

Product attributes: Attribute value

Manufacturer:: Vishay General Semiconductor - Diodes Division

Package/Case:: P600, Axial

Series:: TransZorb®

Packaging:: Bulk

Product Status:: Obsolete

Type:: Zener

Unidirectional Channels:: 1

Bidirectional Channels:: -

Voltage - Reverse Standoff (Typ):: 30V

Voltage - Breakdown (Min):: 33.3V

Voltage - Clamping (Max) @ Ipp:: 48.4V

Current - Peak Pulse (10/1000µs):: 103A

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

5KP30A-E3/51 FAQ

1.How can I place an order for 5KP30A-E3/51 through Aetrix?

Please submit a Request for Quotation (RFQ) for 5KP30A-E3/51 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 5KP30A-E3/51 reliable?

The price and inventory of 5KP30A-E3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5KP30A-E3/51 is usually 5 days.

3.What payment methods are accepted for 5KP30A-E3/51?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KP30A-E3/51 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 5KP30A-E3/51?

5KP30A-E3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 5KP30A-E3/51 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 5KP30A-E3/51?

For technical support, including 5KP30A-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KP30A-E3/51 requirements.

6.How does Aetrix verify that 5KP30A-E3/51 is sourced from the original manufacturer or authorized distributors?

All 5KP30A-E3/51 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 5KP30A-E3/51 meets industry standards.

7.What is the process for return or replacement of 5KP30A-E3/51?

All 5KP30A-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 5KP30A-E3/51, 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 5KP30A-E3/51 part is unused and in its original packaging.

Return procedure for 5KP30A-E3/51:

1.Submit a request within 90 days.

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

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