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

Vishay General Semiconductor - Diodes Division 5KP188-E3/73

Name: 5KP188-E3/73
Brand: Vishay General Semiconductor - Diodes Division
SKU: 5KP188-E3/73
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 5KP188-E3/73

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: TVS Diodes

Package:: P600, Axial

Datasheet:: 5KP188-E3/73.pdf

Description:: TVS DIODE 188VWM 344VC P600

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Product details

Overview

5KP188-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), 188 V stand-off voltage (V_WM), and 328 V clamping voltage (V_C) at 15.2 A peak pulse current. It protects MOSFETs, ICs, and sensor signal lines in automotive and industrial power supplies.

For engineers reviewing the 5KP188-E3/73 datasheet, 5KP188-E3/73 pinout, 5KP188-E3/73 application, or 5KP188-E3/73 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 209–231 V breakdown range (V_BR at 5 mA). Its glass-passivated P600 junction enables fast response time and stable clamping 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 (up to 15.2 A) while allowing upstream fuses or breakers to clear faults-requiring adequate heatsinking per the 8.0 W power dissipation rating at T_L = 75 °C.

Key Specifications

Parameter	Value and Actual Design Meaning
V_WM	188 V - Maximum continuous reverse operating voltage before clamping begins
V_BR min/max	209 V / 231 V at 5 mA - Confirmed breakdown threshold range defining turn-on precision
V_C @ I_PPM	328 V at 15.2 A - Clamped voltage during 10/1000 μs surge, limiting downstream stress
P_PPM	5000 W - Peak pulse power handling capability under standardized surge waveform
I_F_SM	500 A - Non-repetitive forward surge current rating (8.3 ms half-sine)
T_J max	175 °C - Maximum junction temperature enabling operation in under-hood automotive environments
Polarity	Unidirectional - Cathode marked by color band; blocks forward conduction until V_F ≈ 3.5 V at 100 A

Pinout & Package

Package: P600 molded epoxy case with glass-passivated junction, UL 94 V-0 rated, 9.5 mm body length, 1.32 mm lead diameter. Matte tin-plated leads meet J-STD-002 solderability and JESD 201 Class 1A whisker resistance.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry / Surge return path	Connected to protected circuit ground or low-side reference; carries full surge current during clamping
Cathode	Reverse-biased clamping node	Connected to line being protected; voltage clamps to ≤328 V when transients exceed 188 V

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing
5000 W peak pulse power	Withstands high-energy lightning-induced or inductive-switching transients without failure
Low incremental surge resistance	Minimizes V_C overshoot during fast-rising transients, improving protection margin
RoHS-compliant E3 suffix	Meets JEDEC JESD201 Class 1A whisker test and EU Directive 2011/65/EU requirements
Fast response time	Sub-nanosecond junction response ensures clamping activation before sensitive downstream components are stressed

Applications

Automotive Power Supply Output Protection	Industrial Motor Drive DC Bus Clamp
Use Scenario: Protecting 12 V/24 V battery-fed DC-DC converter outputs against load dump and alternator surge events. IC Role / Device Role / Timing Role: Voltage-clamping TVS placed between output rail and ground, activated within nanoseconds of overvoltage detection. Use Value: Limits transient voltage to ≤328 V, preventing damage to downstream regulators and microcontrollers while enabling fuse coordination.	Use Scenario: Safeguarding IGBT gate drivers and bus monitoring ICs on 400 V DC bus in variable-frequency drives. IC Role / Device Role / Timing Role: Unidirectional clamp absorbing regenerative energy spikes during rapid motor deceleration. Use Value: Withstands 5000 W pulses without degradation, maintaining system uptime and eliminating need for crowbar SCR circuits.
Telecom Base Station Power Input	Consumer Appliance SMPS Secondary Side
Use Scenario: Shielding PoE-powered equipment front-end from induced surges on long Ethernet cable runs. IC Role / Device Role / Timing Role: Standoff-rated protector on 48 V input rail, clamping common-mode transients coupled onto data/power pairs. Use Value: 188 V V_WM ensures no leakage during normal operation; 328 V V_C prevents latch-up in PMICs and PHYs.	Use Scenario: Securing secondary-side synchronous rectifier controllers and optocouplers in 19 V laptop adapters. IC Role / Device Role / Timing Role: Fast-acting shunt element across output capacitor, diverting surge energy away from feedback network. Use Value: Low clamping ratio (V_C/V_BR ≈ 1.45) preserves regulation accuracy and avoids false OVP shutdowns.

Automotive Power Supply Output Protection

Industrial Motor Drive DC Bus Clamp

Use Scenario: Protecting 12 V/24 V battery-fed DC-DC converter outputs against load dump and alternator surge events.

IC Role / Device Role / Timing Role: Voltage-clamping TVS placed between output rail and ground, activated within nanoseconds of overvoltage detection.

Use Value: Limits transient voltage to ≤328 V, preventing damage to downstream regulators and microcontrollers while enabling fuse coordination.

Use Scenario: Safeguarding IGBT gate drivers and bus monitoring ICs on 400 V DC bus in variable-frequency drives.

IC Role / Device Role / Timing Role: Unidirectional clamp absorbing regenerative energy spikes during rapid motor deceleration.

Use Value: Withstands 5000 W pulses without degradation, maintaining system uptime and eliminating need for crowbar SCR circuits.

Telecom Base Station Power Input

Consumer Appliance SMPS Secondary Side

Use Scenario: Shielding PoE-powered equipment front-end from induced surges on long Ethernet cable runs.

IC Role / Device Role / Timing Role: Standoff-rated protector on 48 V input rail, clamping common-mode transients coupled onto data/power pairs.

Use Value: 188 V V_WM ensures no leakage during normal operation; 328 V V_C prevents latch-up in PMICs and PHYs.

Use Scenario: Securing secondary-side synchronous rectifier controllers and optocouplers in 19 V laptop adapters.

IC Role / Device Role / Timing Role: Fast-acting shunt element across output capacitor, diverting surge energy away from feedback network.

Use Value: Low clamping ratio (V_C/V_BR ≈ 1.45) preserves regulation accuracy and avoids false OVP shutdowns.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SMBJ188A	Lower peak power (600 W), smaller SMB package, same V_WM (188 V), higher V_C (308 V)	Not suitable for 5000 W surge environments; limited to board-level ESD or low-energy transients	Select only where space constraints prohibit P600 and surge energy is <10% of 5KP188-E3/73 rating
1.5KE188A	Same V_WM (188 V) and V_C (328 V), but lower P_PPM (1500 W), DO-201 package	Lacks AEC-Q101 qualification and thermal robustness for automotive under-hood use	Acceptable for cost-sensitive industrial controls where 5000 W rating is not required and qualification is not mandated

Compared with SMBJ188A and 1.5KE188A, the 5KP188-E3/73 delivers 3.3× and 3.3× higher peak pulse power respectively, maintains AEC-Q101 compliance, and supports higher sustained power dissipation (8.0 W vs. ≤3.0 W), making it uniquely suited for demanding automotive and industrial power rail protection.

Availability

5KP188-E3/73 is available at Aetrix Electronics and suitable for automotive power supply output protection, industrial motor drive DC bus clamp, and telecom base station power input requiring stable component supply across extended temperature ranges and high-reliability certifications.

Supply support for 5KP188-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 power MOSFETs with emphasis on ruggedness and reliability.

The 5KP series was engineered specifically for high-energy transient suppression in switching power supply outputs, targeting automotive, industrial, and telecom applications where crowbar circuit replacement and fuse-coordinated fault clearing are critical.

FAQ

What is the maximum clamping voltage of the 5KP188-E3/73 under standard surge conditions?

The 5KP188-E3/73 has a maximum clamping voltage (V_C) of 328 V when subjected to its rated peak pulse current of 15.2 A using the 10/1000 μs waveform. This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during transient events, ensuring downstream ICs remain within safe operating limits.

Is the 5KP188-E3/73 qualified for automotive applications?

Yes, the 5KP188-E3/73 is AEC-Q101 qualified, having passed rigorous stress tests including temperature cycling, high-temperature reverse bias, and ESD. The "HE3" variant explicitly denotes AEC-Q101 qualification, while the "E3" suffix indicates RoHS compliance and JESD 201 Class 1A whisker resistance-both essential for under-hood automotive deployment.

What does the "-E3/73" suffix indicate in the 5KP188-E3/73 part number?

The "E3" suffix signifies RoHS-compliant matte tin-plated leads meeting J-STD-002 solderability and JESD 201 Class 1A whisker resistance. The "/73" denotes packaging in 73 mm tape-and-reel format (800 units per reel), consistent with Vishay's preferred ordering code for P600 devices used in automated SMT assembly.

Can the 5KP188-E3/73 be used in bidirectional configurations?

No, the 5KP188-E3/73 is unidirectional only, with cathode identified by a color band. Bidirectional protection requires two devices in series opposing configuration or a dedicated bidirectional TVS such as the 5KP188CA. Using a single 5KP188-E3/73 in reverse orientation will not provide clamping on positive transients.

What is the thermal derating behavior of the 5KP188-E3/73 above 25 °C ambient?

The 5KP188-E3/73 follows a linear derating curve from 100% power at 25 °C to 0% at 175 °C junction temperature. At 75 °C lead temperature (T_L), its power dissipation is rated at 8.0 W on an infinite heatsink. Derating must follow Figure 2 in Vishay document 88308, with actual PCB copper area and airflow determining real-world thermal performance.

5KP188-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:: Obsolete

Type:: Zener

Unidirectional Channels:: 1

Bidirectional Channels:: -

Voltage - Reverse Standoff (Typ):: 188V

Voltage - Breakdown (Min):: 209V

Voltage - Clamping (Max) @ Ipp:: 344V

Current - Peak Pulse (10/1000µs):: 14.5A

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

5KP188-E3/73 FAQ

1.How can I place an order for 5KP188-E3/73 through Aetrix?

Please submit a Request for Quotation (RFQ) for 5KP188-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 5KP188-E3/73 reliable?

The price and inventory of 5KP188-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 5KP188-E3/73 is usually 5 days.

3.What payment methods are accepted for 5KP188-E3/73?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KP188-E3/73 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 5KP188-E3/73?

5KP188-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 5KP188-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 5KP188-E3/73?

For technical support, including 5KP188-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KP188-E3/73 requirements.

6.How does Aetrix verify that 5KP188-E3/73 is sourced from the original manufacturer or authorized distributors?

All 5KP188-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 5KP188-E3/73 meets industry standards.

7.What is the process for return or replacement of 5KP188-E3/73?

All 5KP188-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 5KP188-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 5KP188-E3/73 part is unused and in its original packaging.

Return procedure for 5KP188-E3/73:

1.Submit a request within 90 days.

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

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