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

Vishay General Semiconductor - Diodes Division 5KP14A-E3/51

Name: 5KP14A-E3/51
Brand: Vishay General Semiconductor - Diodes Division
SKU: 5KP14A-E3/51
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 5KP14A-E3/51

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: TVS Diodes

Package:: P600, Axial

Datasheet:: 5KP14A-E3/51.pdf

Description:: TVS DIODE 14VWM 23.2VC P600

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Product details

Overview

5KP14A-E3/51 from Vishay General Semiconductor is a unidirectional TransZORB® transient voltage suppressor (TVS) diode designed for high-energy surge protection in DC power lines and signal paths. It features a 14.0 V stand-off voltage (VWM), 15.6–17.2 V breakdown voltage (VBR) at 5.0 mA, 23.2 V clamping voltage (VC) at 216 A peak pulse current, and 5000 W peak pulse power rating with 10/1000 μs waveform - deployed in automotive power supply inputs and industrial motor drive control circuits.

For engineers reviewing the 5KP14A-E3/51 datasheet, 5KP14A-E3/51 pinout, 5KP14A-E3/51 application, or 5KP14A-E3/51 equivalent, key selection criteria include unidirectional polarity, P600 package thermal performance, clamping voltage margin vs. protected IC V_DD, and AEC-Q101 qualification for automotive-grade reliability validation.

Technical Context

This TVS diode uses a glass-passivated P600 chip junction to achieve low incremental surge resistance and sub-nanosecond response time during ESD or lightning-induced transients. Its unidirectional configuration enables integration into DC-biased rails where reverse conduction must be blocked until clamping threshold is exceeded.

The device operates across –55 °C to +175 °C junction temperature range and sustains 5000 W peak pulse power only under strict 0.01 % duty cycle conditions (e.g., single-event surges). Derating applies above 25 °C ambient per Fig. 2, and thermal management requires adequate PCB copper area due to 8.0 W steady-state power dissipation limit on infinite heatsink.

Key Specifications

Parameter	Value and Actual Design Meaning
V_WM	14.0 V - Maximum continuous reverse operating voltage before leakage exceeds 2.0 μA; sets upper limit for protected circuit's nominal DC rail.
V_BR @ I_T	15.6–17.2 V @ 5.0 mA - Breakdown onset range; ensures reliable turn-on before downstream component overvoltage damage.
V_C @ I_PPM	23.2 V @ 216 A - Clamped voltage during 10/1000 μs surge; defines worst-case stress on load-side components.
P_PPM	5000 W - Peak pulse power handling capability; validates suitability for ISO 7637-2 Pulse 5a/b or IEC 61000-4-5 Level 4 surges.
I_FSM	600 A - Non-repetitive forward surge current rating (8.3 ms half-sine); supports crowbar-style overcurrent fault clearing.
T_J max.	+175 °C - Maximum junction temperature; enables operation in under-hood automotive environments without derating.
Polarity	Unidirectional - Cathode-marked device; blocks reverse current until V_BR exceeded, then clamps positive transients to cathode.

Pinout & Package

5KP14A-E3/51 is housed in the axial-lead P600 package: molded epoxy body with matte tin-plated leads, UL 94 V-0 rated, RoHS-compliant, and qualified to AEC-Q101. The cathode is marked by a color band on the body end.

Pin/Terminal	Circuit Role	Design Meaning
Anode (banded end)	Transient return path / ground reference	Connected to system ground or low-impedance return; carries full surge current during clamping event.
Cathode (non-banded end)	Protected line connection	Connected to DC input rail (e.g., battery feed); voltage at this terminal is clamped to ≤23.2 V during surge.

Key Features

Feature	Design Value
5000 W peak pulse power (10/1000 μs)	Enables protection against severe automotive load dump (ISO 7637-2 Pulse 5) without cascaded devices.
AEC-Q101 qualification	Validates reliability for automotive powertrain and body electronics applications requiring zero-failure field performance.
Low clamping ratio (V_C/V_BR ≈ 1.4)	Minimizes overvoltage margin between clamping and protected IC absolute maximum ratings.
P600 glass-passivated junction	Ensures stable V_BR tolerance and long-term surge endurance under thermal cycling.
175 °C max junction temperature	Supports placement near heat-generating components (e.g., MOSFETs, inductors) without thermal derating penalties.

Applications

Automotive Power Input Protection	Industrial Motor Drive Control
Use Scenario: Protecting 12 V battery-fed ECUs from load dump transients up to 120 V and 5000 W energy. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC converter input to clamp surges before regulator failure. Use Value: Clamps to 23.2 V within nanoseconds, preserving downstream 36 V-rated buck converters and enabling fuse-only fault clearing.	Use Scenario: Safeguarding gate drivers and microcontrollers in variable-frequency drives exposed to inductive switching spikes. IC Role / Device Role / Timing Role: Mounted across DC bus terminals to absorb flyback energy from IGBT snubbers and prevent controller reset. Use Value: Withstands 600 A non-repetitive surge (8.3 ms), allowing safe interruption by upstream circuit breakers without device degradation.
Telecom Power Supply Output	Consumer Appliance Main Board
Use Scenario: Secondary-side overvoltage suppression on 48 V telecom rectifier outputs subjected to lightning-induced ring waves. IC Role / Device Role / Timing Role: Parallel-connected TVS on output rail to limit transient excursions during AC line coupling events. Use Value: 23.2 V clamping voltage ensures compliance with GR-1089-CORE Level 4 (4 kV/2 kA) while maintaining <100 ns response.	Use Scenario: Input surge protection for smart home hubs powered from wall adapters with poor internal filtering. IC Role / Device Role / Timing Role: First-line defense on 5–24 V DC input traces against ESD and capacitor discharge events. Use Value: 2.0 μA max leakage at 14 V prevents standby current drain; RoHS/E3 compliance meets global consumer safety mandates.

Automotive Power Input Protection

Industrial Motor Drive Control

Use Scenario: Protecting 12 V battery-fed ECUs from load dump transients up to 120 V and 5000 W energy.

IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC converter input to clamp surges before regulator failure.

Use Value: Clamps to 23.2 V within nanoseconds, preserving downstream 36 V-rated buck converters and enabling fuse-only fault clearing.

Use Scenario: Safeguarding gate drivers and microcontrollers in variable-frequency drives exposed to inductive switching spikes.

IC Role / Device Role / Timing Role: Mounted across DC bus terminals to absorb flyback energy from IGBT snubbers and prevent controller reset.

Use Value: Withstands 600 A non-repetitive surge (8.3 ms), allowing safe interruption by upstream circuit breakers without device degradation.

Telecom Power Supply Output

Consumer Appliance Main Board

Use Scenario: Secondary-side overvoltage suppression on 48 V telecom rectifier outputs subjected to lightning-induced ring waves.

IC Role / Device Role / Timing Role: Parallel-connected TVS on output rail to limit transient excursions during AC line coupling events.

Use Value: 23.2 V clamping voltage ensures compliance with GR-1089-CORE Level 4 (4 kV/2 kA) while maintaining <100 ns response.

Use Scenario: Input surge protection for smart home hubs powered from wall adapters with poor internal filtering.

IC Role / Device Role / Timing Role: First-line defense on 5–24 V DC input traces against ESD and capacitor discharge events.

Use Value: 2.0 μA max leakage at 14 V prevents standby current drain; RoHS/E3 compliance meets global consumer safety mandates.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SMBJ14A	Lower peak power (600 W), smaller SMB package, same V_WM/V_BR range	Suitable for board-level ESD only; insufficient for load dump or lightning surges	Select when space-constrained and surge energy ≤100 mJ; not a drop-in replacement for 5KP14A-E3/51.
1.5KE14A	Same P600 package, 1500 W peak power, higher clamping voltage (25.1 V)	Limited to lower-energy transients; lacks AEC-Q101 qualification	Use where automotive qualification is unnecessary and 25.1 V clamping is acceptable for protected ICs.

Compared with SMBJ14A and 1.5KE14A, the 5KP14A-E3/51 delivers 3.3× higher peak power and AEC-Q101 validation - making it the sole choice for automotive load dump and industrial 5000 W surge compliance, despite larger P600 footprint.

Availability

5KP14A-E3/51 is available at Aetrix Electronics and suitable for automotive power modules, industrial motor drives, telecom rectifiers, and consumer appliance main boards requiring stable component supply across extended production lifecycles.

Supply support for 5KP14A-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 packaging.

The 5KP series was engineered specifically for high-energy transient suppression in automotive and industrial power systems - prioritizing clamping precision, thermal robustness, and AEC-Q101 compliance over compactness.

FAQ

What is the clamping voltage of the 5KP14A-E3/51 under a 10/1000 μs surge?

The 5KP14A-E3/51 clamps to a maximum of 23.2 V when subjected to its rated 216 A peak pulse current under the standardized 10/1000 μs waveform. This value is measured per JEDEC test conditions and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring compatibility with downstream ICs rated for ≤24 V absolute maximum.

Is the 5KP14A-E3/51 suitable for automotive applications?

Yes, the 5KP14A-E3/51 is AEC-Q101 qualified and explicitly designed for automotive use cases including engine control units, body controllers, and infotainment power supplies. Its 175 °C maximum junction temperature, P600 mechanical robustness, and validated performance under ISO 7637-2 load dump conditions make it appropriate for under-hood and chassis-mounted deployments where reliability is mission-critical.

What does the "E3/51" suffix indicate in 5KP14A-E3/51?

The "E3" denotes RoHS-compliant, commercial-grade termination meeting JESD 201 Class 1A whisker resistance, while "/51" specifies the preferred packaging code: 500-piece bulk pack in ammo pack format. This differs from tape-and-reel variants like /54 (800-piece reel), and confirms the part meets Vishay's standard environmental and solderability requirements per J-STD-002 and JESD 22-B102.

How does the 5KP14A-E3/51 differ from bidirectional TVS diodes?

The 5KP14A-E3/51 is unidirectional - it blocks reverse current up to –14 V and clamps only positive transients above +15.6 V. Bidirectional variants (e.g., 5KP14CA) would conduct symmetrically for both polarities, making them unsuitable for DC-biased rails where reverse conduction must be avoided. This unidirectional behavior preserves system ground integrity and prevents unintended current paths during normal operation.

Can the 5KP14A-E3/51 replace a 1.5KE14A in an existing design?

While both share the P600 package and similar V_WM/V_BR, the 5KP14A-E3/51 offers 3.3× higher peak pulse power (5000 W vs. 1500 W) and AEC-Q101 qualification - but requires verification of PCB thermal relief and surge source impedance. Direct substitution may improve surge margin but demands revalidation of clamping behavior under actual system-level transients due to differing dynamic impedance characteristics.

5KP14A-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):: 14V

Voltage - Breakdown (Min):: 15.6V

Voltage - Clamping (Max) @ Ipp:: 23.2V

Current - Peak Pulse (10/1000µs):: 216A

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

5KP14A-E3/51 FAQ

1.How can I place an order for 5KP14A-E3/51 through Aetrix?

Please submit a Request for Quotation (RFQ) for 5KP14A-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 5KP14A-E3/51 reliable?

The price and inventory of 5KP14A-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 5KP14A-E3/51 is usually 5 days.

3.What payment methods are accepted for 5KP14A-E3/51?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KP14A-E3/51 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 5KP14A-E3/51?

5KP14A-E3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 5KP14A-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 5KP14A-E3/51?

For technical support, including 5KP14A-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KP14A-E3/51 requirements.

6.How does Aetrix verify that 5KP14A-E3/51 is sourced from the original manufacturer or authorized distributors?

All 5KP14A-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 5KP14A-E3/51 meets industry standards.

7.What is the process for return or replacement of 5KP14A-E3/51?

All 5KP14A-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 5KP14A-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 5KP14A-E3/51 part is unused and in its original packaging.

Return procedure for 5KP14A-E3/51:

1.Submit a request within 90 days.

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

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