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

Vishay General Semiconductor - Diodes Division 5KP33-E3/54

Name: 5KP33-E3/54
Brand: Vishay General Semiconductor - Diodes Division
SKU: 5KP33-E3/54
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 5KP33-E3/54

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: TVS Diodes

Package:: P600, Axial

Datasheet:: 5KP33-E3/54.pdf

Description:: TVS DIODE 33VWM 59VC P600

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Product details

Overview

5KP33-E3/54 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), 33 V stand-off voltage (V_WM), and 53.3 V clamping voltage (V_C) at 93.8 A peak pulse current. It protects MOSFETs, ICs, and sensor signal lines in automotive and industrial power supplies.

For engineers reviewing the 5KP33-E3/54 datasheet, 5KP33-E3/54 pinout, 5KP33-E3/54 application, or 5KP33-E3/54 equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 175 °C max junction temperature, low incremental surge resistance, and compatibility with 13" tape-and-reel delivery for automated assembly.

Technical Context

This TVS diode operates as a voltage-clamping overvoltage protector-triggering above its 33 V reverse stand-off voltage and clamping transients to ≤53.3 V at rated 93.8 A surge current. Its glass-passivated P600 junction enables fast response (<1 ns) and stable breakdown behavior under repetitive 0.01% duty cycle surges.

Designed for output-stage protection in switching power supplies, it replaces crowbar circuits by sustaining high peak currents long enough to allow fuse/breaker operation without device failure. Thermal performance is validated up to 175 °C junction temperature, with derating applied above 25 °C ambient per Fig. 2.

Key Specifications

Parameter	Value and Actual Design Meaning
V_WM	33 V - Maximum continuous reverse operating voltage before clamping begins
V_BR min/max	36.7 V / 40.6 V - Breakdown occurs within this range at 50 mA test current, ensuring reliable turn-on margin
V_C @ I_PPM	53.3 V - Clamped voltage during 93.8 A 10/1000 μs surge, limiting downstream stress
P_PPM	5000 W - Peak pulse power handling capability defines maximum transient energy absorption
I_FSM	600 A - Non-repetitive forward surge rating supports high-current fault conditions
T_J max	175 °C - Maximum junction temperature enables use in under-hood automotive environments
Polarity	Unidirectional - Cathode marked by color band; blocks reverse current until breakdown

Pinout & Package

Package: P600 molded epoxy body with matte tin-plated leads; RoHS-compliant, UL 94 V-0 rated; 0.375" (9.5 mm) body length; lead finish solderable per J-STD-002/JESD 22-B102.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward conduction path	Connected to circuit ground or low-side reference in unidirectional clamp configuration
Cathode	Protected line connection	Marked by color band; connects to line being protected (e.g., DC output rail)

Key Features

Feature	Design Value
5000 W peak pulse power	Enables robust protection against lightning-induced surges and inductive switching transients in 48 V systems
AEC-Q101 qualified	Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock
Low incremental surge resistance	Minimizes voltage overshoot during fast-rising transients, improving clamping precision
Fast response time	Sub-nanosecond turn-on ensures protection before sensitive downstream components experience overstress
10/1000 μs waveform compliance	Meets industry-standard surge immunity test profiles used in IEC 61000-4-5 Level 4 testing

Applications

Automotive Power Supply Protection	Industrial DC Motor Drive Output
Use Scenario: Protecting 33 V nominal battery-fed ECUs from load-dump and alternator surge events. IC Role / Device Role / Timing Role: Voltage-clamping TVS placed across main DC input rail upstream of DC/DC converters. Use Value: Limits transient voltage to 53.3 V, preventing damage to 36 V-rated regulators and microcontrollers.	Use Scenario: Safeguarding H-bridge gate drivers and current-sense amplifiers from flyback spikes during motor commutation. IC Role / Device Role / Timing Role: Unidirectional shunt protector on motor phase outputs, triggered only during positive overvoltage events. Use Value: Absorbs 5000 W surges without degradation, maintaining system uptime during frequent switching cycles.
Telecom DC Feeder Line Protection	Server PSU Secondary-Side Output Clamp
Use Scenario: Shielding PoE-powered equipment front-ends from induced surges on 33 V auxiliary distribution lines. IC Role / Device Role / Timing Role: Standoff-rated TVS installed between feed line and local ground plane, with cathode tied to line. Use Value: Withstands repeated 10/1000 μs surges while holding leakage below 2 μA at 33 V, minimizing standby loss.	Use Scenario: Preventing overvoltage damage to 33 V FPGA I/O banks during secondary-side regulator fault conditions. IC Role / Device Role / Timing Role: Final-stage clamping element located immediately after DC/DC output filter capacitor. Use Value: Clamps fault voltage to 53.3 V within nanoseconds, allowing system watchdogs time to initiate safe shutdown.

Automotive Power Supply Protection

Industrial DC Motor Drive Output

Use Scenario: Protecting 33 V nominal battery-fed ECUs from load-dump and alternator surge events.

IC Role / Device Role / Timing Role: Voltage-clamping TVS placed across main DC input rail upstream of DC/DC converters.

Use Value: Limits transient voltage to 53.3 V, preventing damage to 36 V-rated regulators and microcontrollers.

Use Scenario: Safeguarding H-bridge gate drivers and current-sense amplifiers from flyback spikes during motor commutation.

IC Role / Device Role / Timing Role: Unidirectional shunt protector on motor phase outputs, triggered only during positive overvoltage events.

Use Value: Absorbs 5000 W surges without degradation, maintaining system uptime during frequent switching cycles.

Telecom DC Feeder Line Protection

Server PSU Secondary-Side Output Clamp

Use Scenario: Shielding PoE-powered equipment front-ends from induced surges on 33 V auxiliary distribution lines.

IC Role / Device Role / Timing Role: Standoff-rated TVS installed between feed line and local ground plane, with cathode tied to line.

Use Value: Withstands repeated 10/1000 μs surges while holding leakage below 2 μA at 33 V, minimizing standby loss.

Use Scenario: Preventing overvoltage damage to 33 V FPGA I/O banks during secondary-side regulator fault conditions.

IC Role / Device Role / Timing Role: Final-stage clamping element located immediately after DC/DC output filter capacitor.

Use Value: Clamps fault voltage to 53.3 V within nanoseconds, allowing system watchdogs time to initiate safe shutdown.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Littelfuse SMAJ33A	400 W peak power, SMA package, lower I_PPM (32.9 A), same V_WM/V_C tolerance	Suitable for lower-energy surges; not rated for AEC-Q101 or 5000 W events	Select when space-constrained PCB layout requires SMT and surge levels remain below 400 W
ON Semiconductor 1.5KE33A	1500 W peak power, DO-201 package, higher V_C (57.5 V), same unidirectional polarity	Used in legacy through-hole designs; lacks AEC-Q101 qualification and P600 thermal mass	Choose for cost-sensitive industrial controls where 1500 W rating suffices and leaded assembly is preferred

Compared with SMAJ33A and 1.5KE33A, the 5KP33-E3/54 delivers 3.3× and 3.3× higher peak pulse power respectively, with AEC-Q101 validation and superior thermal dissipation in P600-making it the only option qualified for automotive under-hood 33 V rail protection.

Availability

5KP33-E3/54 is available at Aetrix Electronics and suitable for automotive ECU protection, industrial motor drive output stages, and telecom DC feeder line surge suppression requiring stable component supply and full traceability.

Supply support for 5KP33-E3/54 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 switching power supply outputs-delivering 5 kW surge capability in standardized P600 packaging for automotive, industrial, and telecom infrastructure.

FAQ

What is the clamping voltage of the 5KP33-E3/54 under maximum rated surge current?

The 5KP33-E3/54 clamps to 53.3 V at its rated peak pulse current of 93.8 A using the standard 10/1000 μs waveform. This value is measured per JEDEC test conditions and guarantees maximum voltage seen by downstream circuitry during a full-rated transient event. The 5KP33-E3/54 maintains this clamping performance across its specified junction temperature range of -55 °C to +175 °C.

Is the 5KP33-E3/54 suitable for automotive applications?

Yes, the 5KP33-E3/54 is AEC-Q101 qualified, confirming its suitability for automotive applications including engine control units, body electronics, and ADAS power rails. Its 175 °C maximum junction temperature, robust P600 package, and validated performance under thermal cycling and humidity stress meet automotive reliability requirements. The 5KP33-E3/54 is explicitly listed in Vishay's AEC-Q101 qualified product list.

What does the "E3/54" suffix mean in 5KP33-E3/54?

The "E3" suffix indicates RoHS-compliant, commercial-grade construction with JESD 201 Class 1A whisker resistance; "/54" denotes the preferred package code for 13-inch paper tape and reel delivery containing 800 units. This ordering format ensures compatibility with automated pick-and-place equipment and matches Vishay's standard logistics configuration for the 5KP33-E3/54.

How does the 5KP33-E3/54 differ from the 5KP33A variant?

The 5KP33-E3/54 is the RoHS-compliant, tape-and-reel packaged version of the base 5KP33A device. Electrically and thermally identical, the 5KP33-E3/54 adds matte tin plating compliant with J-STD-002, JESD 22-B102, and JESD 201 Class 1A whisker testing. The "E3" designation confirms commercial-grade qualification, while "HE3" would indicate AEC-Q101 qualification-neither applies to the 5KP33-E3/54 itself.

Can the 5KP33-E3/54 be used in bidirectional configurations?

No, the 5KP33-E3/54 is unidirectional only, with cathode marked by a color band. It conducts only during positive voltage excursions relative to its cathode terminal. For bidirectional protection, two 5KP33-E3/54 devices must be connected in series opposition, or a dedicated bidirectional TVS such as the 5KP33CA should be selected instead. Using a single 5KP33-E3/54 in reverse orientation will not provide clamping in the opposite polarity.

5KP33-E3/54 Specifications

Product attributes: Attribute value

Manufacturer:: Vishay General Semiconductor - Diodes Division

Package/Case:: P600, Axial

Series:: TransZorb®

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Type:: Zener

Unidirectional Channels:: 1

Bidirectional Channels:: -

Voltage - Reverse Standoff (Typ):: 33V

Voltage - Breakdown (Min):: 36.7V

Voltage - Clamping (Max) @ Ipp:: 59V

Current - Peak Pulse (10/1000µs):: 84.7A

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

5KP33-E3/54 FAQ

1.How can I place an order for 5KP33-E3/54 through Aetrix?

Please submit a Request for Quotation (RFQ) for 5KP33-E3/54 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 5KP33-E3/54 reliable?

The price and inventory of 5KP33-E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5KP33-E3/54 is usually 5 days.

3.What payment methods are accepted for 5KP33-E3/54?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KP33-E3/54 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 5KP33-E3/54?

5KP33-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 5KP33-E3/54 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 5KP33-E3/54?

For technical support, including 5KP33-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KP33-E3/54 requirements.

6.How does Aetrix verify that 5KP33-E3/54 is sourced from the original manufacturer or authorized distributors?

All 5KP33-E3/54 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 5KP33-E3/54 meets industry standards.

7.What is the process for return or replacement of 5KP33-E3/54?

All 5KP33-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 5KP33-E3/54, 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 5KP33-E3/54 part is unused and in its original packaging.

Return procedure for 5KP33-E3/54:

1.Submit a request within 90 days.

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

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