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

Vishay General Semiconductor - Diodes Division 5KP54A-E3/51

Name: 5KP54A-E3/51
Brand: Vishay General Semiconductor - Diodes Division
SKU: 5KP54A-E3/51
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 5KP54A-E3/51

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: TVS Diodes

Package:: P600, Axial

Datasheet:: 5KP54A-E3/51.pdf

Description:: TVS DIODE 54VWM 87.1VC P600

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Product details

Overview

5KP54A-E3/51 from Vishay General Semiconductor is a unidirectional TransZORB® transient voltage suppressor (TVS) diode in P600 package, designed for high-energy surge clamping on DC power rails and signal lines. It features 54 V standoff voltage (V_WM), 60–66.3 V breakdown range (V_BR), 87.1 V max clamping voltage at 57.4 A peak pulse current (I_PPM), and 5000 W peak pulse power (10/1000 μs). It is AEC-Q101 qualified and used to protect MOSFETs and ICs in automotive power supplies.

For engineers reviewing the 5KP54A-E3/51 datasheet, 5KP54A-E3/51 pinout, 5KP54A-E3/51 application, or 5KP54A-E3/51 equivalent, key selection criteria include unidirectional polarity, 57.4 A I_PPM, 87.1 V clamping performance, P600 thermal capability, and AEC-Q101 qualification for automotive-grade reliability.

Technical Context

This TVS diode operates as a voltage-clamped crowbar element during transients-conducting only when reverse voltage exceeds its V_BR threshold (60–66.3 V), then limiting downstream voltage to ≤87.1 V at 57.4 A. Its P600 glass-passivated junction enables robust 5000 W surge handling with low incremental surge resistance and <1 ns response time.

Designed for DC rail protection, it replaces traditional crowbar circuits by absorbing energy without short-circuit latching. Thermal derating follows JEDEC curves: power dissipation drops from 8.0 W at T_L = 75 °C to zero at 175 °C junction temperature, requiring adequate PCB copper area for heat spreading.

Key Specifications

Parameter	Value and Actual Design Meaning
V_WM	54 V - Maximum continuous reverse operating voltage before conduction begins; sets safe DC rail margin.
V_BR @ I_T = 50 mA	60–66.3 V - Breakdown onset range; defines minimum clamping trigger point under standardized test current.
V_C @ I_PPM	87.1 V - Clamped voltage at 57.4 A peak pulse; determines maximum stress imposed on protected ICs/MOSFETs.
P_PPM	5000 W - Peak pulse power rating (10/1000 μs waveform); quantifies single-event surge energy absorption capacity.
I_FSM	600 A - Non-repetitive forward surge current (8.3 ms half-sine); supports high-current inrush or fault events without failure.
T_J max	175 °C - Maximum junction temperature; enables operation in under-hood automotive environments with proper thermal design.
Polarity	Unidirectional - Cathode-banded device; blocks forward current until V_F ≈ 3.5 V at 100 A, conducts only in reverse overvoltage.

Pinout & Package

5KP54A-E3/51 uses the industry-standard P600 axial-leaded package: molded epoxy body with matte tin-plated leads, UL 94 V-0 rated, 9.5 mm body length, 0.375" lead spacing, and cathode indicated by color band. Leads are solderable per J-STD-002 and JESD 22-B102, with 275 °C/10 s max solder dip tolerance.

Pin/Terminal	Circuit Role	Design Meaning
Anode (banded end)	Cathode terminal	Connected to system ground or lower-potential node; reverse-biased during normal operation; conducts during overvoltage to clamp to V_C.
Cathode (non-banded end)	Anode terminal	Connected to protected line (e.g., +12 V rail); carries full surge current during clamping event; requires low-inductance layout.

Key Features

Feature	Design Value
5000 W peak pulse power (10/1000 μs)	Enables protection against ISO 7637-2 Pulse 5a/b and IEC 61000-4-5 Level 4 surges without cascading failure.
AEC-Q101 qualified	Validated for automotive under-hood applications including engine control units and body electronics with extended temperature and life-cycle requirements.
Low clamping ratio (V_C/V_BR ≈ 1.32)	Minimizes overvoltage overshoot during fast transients, reducing stress on downstream 60 V-rated MOSFETs and gate drivers.
P600 glass-passivated junction	Provides stable leakage (<2 μA at V_WM) and repeatable breakdown after repeated surge events, critical for long-life industrial systems.
Matte tin-plated leads, JESD 201 Class 1A whisker tested	Ensures reliable solder joint integrity in automated assembly and prevents field failures due to tin whisker growth.

Applications

Automotive Power Rail Protection	Industrial DC Power Supply Output
Use Scenario: Protecting 12 V/24 V battery-fed ECUs from load dump and alternator switching transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp transients above 54 V within nanoseconds. Use Value: Limits peak voltage to 87.1 V during 57.4 A surges, preventing damage to 60 V-rated microcontrollers and CAN transceivers.	Use Scenario: Safeguarding output of 48 V telecom rectifiers against lightning-induced surges and inductive kickback. IC Role / Device Role / Timing Role: Crowbar-style transient suppressor across DC output terminals, replacing SCRs in legacy designs. Use Value: Absorbs 5000 W pulses without latch-up, allowing upstream fuses to clear while preserving system uptime.
Motor Drive Gate Driver Protection	Automotive Sensor Signal Line Protection
Use Scenario: Shielding high-side N-channel MOSFET gate drivers from Miller-induced voltage spikes during fast switching. IC Role / Device Role / Timing Role: TVS connected from gate-to-source to clamp dv/dt-induced overshoot exceeding 54 V. Use Value: Prevents gate oxide breakdown by clamping spikes to ≤87.1 V, enabling use of cost-effective 100 V logic-level MOSFETs.	Use Scenario: Guarding LIN bus or analog sensor inputs (e.g., pressure, temperature) against ESD and cable discharge events. IC Role / Device Role / Timing Role: Unidirectional TVS on signal line referenced to local ground, leveraging low capacitance for minimal signal distortion. Use Value: Provides <2 μA leakage at 54 V and sub-nanosecond response, maintaining signal integrity while meeting ISO 10605 ESD immunity.

Automotive Power Rail Protection

Industrial DC Power Supply Output

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

IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp transients above 54 V within nanoseconds.

Use Value: Limits peak voltage to 87.1 V during 57.4 A surges, preventing damage to 60 V-rated microcontrollers and CAN transceivers.

Use Scenario: Safeguarding output of 48 V telecom rectifiers against lightning-induced surges and inductive kickback.

IC Role / Device Role / Timing Role: Crowbar-style transient suppressor across DC output terminals, replacing SCRs in legacy designs.

Use Value: Absorbs 5000 W pulses without latch-up, allowing upstream fuses to clear while preserving system uptime.

Motor Drive Gate Driver Protection

Automotive Sensor Signal Line Protection

Use Scenario: Shielding high-side N-channel MOSFET gate drivers from Miller-induced voltage spikes during fast switching.

IC Role / Device Role / Timing Role: TVS connected from gate-to-source to clamp dv/dt-induced overshoot exceeding 54 V.

Use Value: Prevents gate oxide breakdown by clamping spikes to ≤87.1 V, enabling use of cost-effective 100 V logic-level MOSFETs.

Use Scenario: Guarding LIN bus or analog sensor inputs (e.g., pressure, temperature) against ESD and cable discharge events.

IC Role / Device Role / Timing Role: Unidirectional TVS on signal line referenced to local ground, leveraging low capacitance for minimal signal distortion.

Use Value: Provides <2 μA leakage at 54 V and sub-nanosecond response, maintaining signal integrity while meeting ISO 10605 ESD immunity.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SMBJ54A	Lower peak power (600 W), SMC package, 87.1 V clamping at 6.5 A (not 57.4 A)	Suitable for board-level ESD on low-energy signal lines, not load-dump protection	Select SMBJ54A only for space-constrained, low-surge applications where 5000 W capability is unnecessary.
1.5KE56A	Same P600 package, 56 V V_WM, 5000 W rating, but higher clamping voltage (93.6 V at 53.5 A)	Compatible for 12 V systems with wider voltage margin; less effective for 60 V-rated components	Choose 1.5KE56A if V_WM tolerance allows 56 V standoff and clamping margin permits 93.6 V peaks.

Compared with SMBJ54A and 1.5KE56A, the 5KP54A-E3/51 delivers superior surge current handling (57.4 A vs. 6.5 A or 53.5 A) and tighter clamping (87.1 V), making it optimal for automotive load dump and industrial power rail protection where energy levels exceed 1 kV·A.

Availability

5KP54A-E3/51 is available at Aetrix Electronics and suitable for automotive ECU protection, industrial DC power supply outputs, motor drive gate driver circuits, and sensor interface protection requiring stable component supply across production lifecycles.

Supply support for 5KP54A-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, power handling, and automotive qualification.

The 5KP series was engineered specifically for high-energy transient suppression in automotive and industrial power systems, targeting replacement of crowbar SCR circuits with robust, resettable, non-latching protection.

FAQ

What is the clamping voltage of the 5KP54A-E3/51 under maximum surge conditions?

The 5KP54A-E3/51 has a maximum clamping voltage (V_C) of 87.1 V at its rated peak pulse current of 57.4 A (10/1000 μs waveform). This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during worst-case transient events. The 5KP54A-E3/51 maintains this clamping performance consistently due to its glass-passivated P600 junction structure.

Is the 5KP54A-E3/51 suitable for automotive applications?

Yes, the 5KP54A-E3/51 is AEC-Q101 qualified and explicitly designed for automotive environments, including engine control units and body electronics. Its 175 °C maximum junction temperature, robust surge rating, and RoHS-compliant matte tin plating meet stringent automotive reliability requirements. The 5KP54A-E3/51 is commonly deployed for ISO 7637-2 load dump protection in 12 V and 24 V systems.

What does the "E3/51" suffix indicate in 5KP54A-E3/51?

The "E3" denotes RoHS-compliant, commercial-grade packaging with JESD 201 Class 1A whisker testing, while "/51" specifies the preferred package code for 13-inch paper tape and reel delivery with 800 units per reel. This ordering code ensures traceable, factory-standard packaging compatible with automated SMT placement equipment. The 5KP54A-E3/51 is not AEC-Q101 qualified unless marked "HE3".

How does the 5KP54A-E3/51 compare to bidirectional TVS diodes?

The 5KP54A-E3/51 is unidirectional only, meaning it protects against reverse-polarity overvoltage on DC lines but does not suppress positive transients on AC or bipolar signals. Bidirectional alternatives like 5KP54CA offer symmetrical clamping but sacrifice ~10 % peak power rating and exhibit higher leakage. The 5KP54A-E3/51 is preferred for dedicated DC rail protection where polarity is fixed and maximum energy absorption is critical.

Can the 5KP54A-E3/51 be used in parallel for higher surge current handling?

No-parallel connection of 5KP54A-E3/51 devices is not recommended due to parameter mismatch (V_BR tolerance ±5 %) causing current imbalance and premature failure of one unit. For higher current needs, select a single higher-rated device (e.g., 5KP64A) or implement external current-sharing resistors with careful thermal derating. The 5KP54A-E3/51 must be applied as a discrete, standalone protector per IEC 61000-4-5 guidelines.

5KP54A-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):: 54V

Voltage - Breakdown (Min):: 60V

Voltage - Clamping (Max) @ Ipp:: 87.1V

Current - Peak Pulse (10/1000µs):: 57.4A

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

5KP54A-E3/51 FAQ

1.How can I place an order for 5KP54A-E3/51 through Aetrix?

Please submit a Request for Quotation (RFQ) for 5KP54A-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 5KP54A-E3/51 reliable?

The price and inventory of 5KP54A-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 5KP54A-E3/51 is usually 5 days.

3.What payment methods are accepted for 5KP54A-E3/51?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KP54A-E3/51 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 5KP54A-E3/51?

5KP54A-E3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 5KP54A-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 5KP54A-E3/51?

For technical support, including 5KP54A-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KP54A-E3/51 requirements.

6.How does Aetrix verify that 5KP54A-E3/51 is sourced from the original manufacturer or authorized distributors?

All 5KP54A-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 5KP54A-E3/51 meets industry standards.

7.What is the process for return or replacement of 5KP54A-E3/51?

All 5KP54A-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 5KP54A-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 5KP54A-E3/51 part is unused and in its original packaging.

Return procedure for 5KP54A-E3/51:

1.Submit a request within 90 days.

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

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