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

Vishay General Semiconductor - Diodes Division 5KP170A-E3/51

Name: 5KP170A-E3/51
Brand: Vishay General Semiconductor - Diodes Division
SKU: 5KP170A-E3/51
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 5KP170A-E3/51

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: TVS Diodes

Package:: P600, Axial

Datasheet:: 5KP170A-E3/51.pdf

Description:: TVS DIODE 170VWM 275VC P600

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Product details

Overview

5KP170A-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), 170 V stand-off voltage (V_WM), and 275 V clamping voltage (V_C) at 18.2 A peak pulse current. It protects MOSFETs, ICs, and sensor signal lines in automotive power supplies and industrial switching systems.

For engineers reviewing the 5KP170A-E3/51 datasheet, 5KP170A-E3/51 pinout, 5KP170A-E3/51 application, or 5KP170A-E3/51 equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 175 °C max junction temperature, low incremental surge resistance, and compatibility with 275 °C solder dip per JESD 22-B106.

Technical Context

This TVS diode operates as a voltage-clamping overvoltage protection device, triggered when reverse voltage exceeds its 189–209 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 transients.

Designed for placement across DC rails or signal paths, it absorbs inductive-switching surges and lightning-induced transients without latch-up. The 5KP170A-E3/51 sustains 8.0 W steady-state power dissipation on an infinite heatsink at 75 °C lead temperature and withstands 600 A non-repetitive forward surge (8.3 ms half-sine).

Key Specifications

Parameter	Value and Actual Design Meaning
V_WM	170 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 170 V nominal systems.
V_BR (min/max)	189 V / 209 V - Breakdown occurs within this range at 5 mA test current; ensures predictable turn-on threshold with 5% tolerance.
V_C @ I_PPM	275 V - Clamped voltage at 18.2 A peak pulse current; limits downstream voltage stress during 5000 W transient events.
P_PPM	5000 W - Peak pulse power handling with 10/1000 μs waveform; supports high-energy surge standards like ISO 7637-2 Pulse 5a.
I_FSM	600 A - Non-repetitive forward surge rating (8.3 ms half-sine); enables robust protection against short-circuit fault currents.
T_J max	175 °C - Maximum junction temperature; allows operation in under-hood automotive environments and high-ambient industrial enclosures.
Polarity	Unidirectional - Cathode marked by color band; used only for DC rail protection where reverse conduction must be blocked.

Pinout & Package

Package: P600 molded epoxy case with matte tin-plated leads; UL 94 V-0 rated; RoHS-compliant (E3 suffix); 9.5 mm body length; 1.32 mm lead diameter.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Low-side connection point	Connected to system ground or low-voltage reference; completes clamping path during overvoltage events.
Cathode	High-side connection point	Marked by color band; connected to protected line (e.g., 170 V rail); conducts avalanche current when V_REV > V_BR.

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock per JESD47.
5000 W peak pulse power	Handles severe transients such as load dump (ISO 16750-2) and alternator ripple without degradation.
Low incremental surge resistance	Minimizes V_C overshoot during fast-rising transients, improving protection margin for sensitive 170 V-rated components.
Fast response time	Sub-nanosecond turn-on ensures clamping activation before transient energy damages downstream MOSFETs or controllers.
Solder dip compatible	Withstands 275 °C for 10 s per JESD 22-B106, supporting wave soldering in high-volume automotive PCB assembly.

Applications

Automotive Power Supply Protection	Industrial Motor Drive DC Bus
Use Scenario: Protecting 170 V battery-fed control modules from load dump transients in 24 V commercial vehicle systems. IC Role / Device Role / Timing Role: Voltage-clamping TVS placed across main DC input rail upstream of DC/DC converters and microcontrollers. Use Value: Limits transient voltage to ≤275 V, preventing damage to 300 V-rated MOSFETs and enabling fuse coordination per ISO 7637-2.	Use Scenario: Safeguarding IGBT gate drivers and bus capacitors in 170 V-rated servo drives exposed to inductive kickback. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing regenerative energy spikes during rapid motor deceleration. Use Value: Clamps 10/1000 μs surges up to 5000 W without thermal runaway, preserving drive uptime and reducing field failure rates.
Telecom Rectifier Output	Renewable Energy Charge Controller
Use Scenario: Shielding telecom base station rectifier outputs (nominal 170 V) from lightning-induced surges on outdoor feeder lines. IC Role / Device Role / Timing Role: Primary overvoltage suppression element between rectifier and backup battery interface. Use Value: Withstands 2000 V open-circuit lightning surges (IEC 61000-4-5) while maintaining <2 μA leakage at 170 V for low standby loss.	Use Scenario: Protecting MPPT controller inputs in solar charge systems operating at 170 V battery string level. IC Role / Device Role / Timing Role: Bidirectional transient shunt across PV input terminals to clamp reverse-polarity and surge events. Use Value: Unidirectional configuration prevents reverse conduction during normal operation while clamping positive-going transients to 275 V.

Automotive Power Supply Protection

Industrial Motor Drive DC Bus

Use Scenario: Protecting 170 V battery-fed control modules from load dump transients in 24 V commercial vehicle systems.

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

Use Value: Limits transient voltage to ≤275 V, preventing damage to 300 V-rated MOSFETs and enabling fuse coordination per ISO 7637-2.

Use Scenario: Safeguarding IGBT gate drivers and bus capacitors in 170 V-rated servo drives exposed to inductive kickback.

IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing regenerative energy spikes during rapid motor deceleration.

Use Value: Clamps 10/1000 μs surges up to 5000 W without thermal runaway, preserving drive uptime and reducing field failure rates.

Telecom Rectifier Output

Renewable Energy Charge Controller

Use Scenario: Shielding telecom base station rectifier outputs (nominal 170 V) from lightning-induced surges on outdoor feeder lines.

IC Role / Device Role / Timing Role: Primary overvoltage suppression element between rectifier and backup battery interface.

Use Value: Withstands 2000 V open-circuit lightning surges (IEC 61000-4-5) while maintaining <2 μA leakage at 170 V for low standby loss.

Use Scenario: Protecting MPPT controller inputs in solar charge systems operating at 170 V battery string level.

IC Role / Device Role / Timing Role: Bidirectional transient shunt across PV input terminals to clamp reverse-polarity and surge events.

Use Value: Unidirectional configuration prevents reverse conduction during normal operation while clamping positive-going transients to 275 V.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SMBJ170A	Lower peak pulse power (600 W), SMC package, same V_WM/V_C ratings but higher clamping ratio.	Not suitable for ISO 7637-2 Pulse 5a or load dump; limited to board-level ESD and lower-energy transients.	Select SMBJ170A only for space-constrained consumer electronics where 5000 W capability is unnecessary.
1.5KE170A	Same V_WM/V_BR range but lower P_PPM (1500 W), DO-201 package, higher V_C (278 V), no AEC-Q101 qualification.	Lacks automotive qualification and thermal robustness; not recommended for under-hood deployment.	Choose 1.5KE170A only for cost-sensitive industrial controls with derated surge requirements and ambient <125 °C.

Compared with SMBJ170A and 1.5KE170A, the 5KP170A-E3/51 delivers 3.3× and 3.3× higher peak pulse power respectively, maintains AEC-Q101 compliance for automotive use, and offers superior thermal dissipation via P600 package-critical for sustained surge resilience in high-power 170 V systems.

Availability

5KP170A-E3/51 is available at Aetrix Electronics and suitable for automotive power supply protection, industrial motor drive DC bus stabilization, and telecom rectifier output safeguarding requiring stable component supply and long-term lifecycle support.

Supply support for 5KP170A-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 automotive-grade qualification.

The 5KP series was engineered specifically for high-energy transient suppression in automotive and industrial power systems, targeting applications demanding ≥5000 W surge handling and AEC-Q101 validation.

FAQ

What is the clamping voltage of the 5KP170A-E3/51 under maximum rated surge current?

The 5KP170A-E3/51 has a maximum clamping voltage (V_C) of 275 V at its rated peak pulse current (I_PPM) of 18.2 A, measured with a 10/1000 μs waveform. This value is guaranteed per JEDEC registered test conditions and ensures downstream components see no more than 275 V during worst-case transients. The 5KP170A-E3/51 achieves this with low incremental surge resistance, minimizing overshoot beyond the specified V_C.

Is the 5KP170A-E3/51 suitable for automotive applications?

Yes, the 5KP170A-E3/51 is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments up to 175 °C junction temperature. Its P600 package, 275 °C solder dip tolerance, and validated performance under ISO 7637-2 load dump conditions make it appropriate for 24 V commercial vehicle power systems. The 5KP170A-E3/51 meets all stress tests required for automotive-grade TVS diodes per the AEC-Q101 standard.

What does the "E3/51" suffix indicate in 5KP170A-E3/51?

The "E3" suffix denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads meeting J-STD-002 and JESD 22-B102 solderability standards, plus JESD 201 Class 1A whisker resistance. The "/51" indicates packaging in 51 mm tape-and-reel format (800 units per reel). This distinguishes it from HE3 variants (AEC-Q101 qualified) and alternate reel codes like /54. The 5KP170A-E3/51 is fully traceable and compliant with EU RoHS Directive 2011/65/EU.

How does the 5KP170A-E3/51 compare to standard Zener diodes in surge protection?

Unlike standard Zener diodes, the 5KP170A-E3/51 uses a glass-passivated chip junction optimized for high-current avalanche conduction, delivering 5000 W peak pulse power versus typical Zeners rated below 5 W. It features faster response (<1 ns), lower dynamic impedance, and guaranteed clamping behavior under transient conditions-whereas Zeners exhibit significant voltage overshoot and thermal instability at high surge currents. The 5KP170A-E3/51 is purpose-built for transient suppression; Zeners are intended for voltage regulation.

Can the 5KP170A-E3/51 be used in bidirectional configurations?

No, the 5KP170A-E3/51 is unidirectional only, with cathode marked by a color band. It conducts only in reverse breakdown and blocks forward current above ~3.5 V. For bidirectional protection, two 5KP170A-E3/51 devices must be connected in series opposing configuration-or a dedicated bidirectional TVS (e.g., 5KP170CA) should be selected. Using a single 5KP170A-E3/51 in reverse-biased orientation will not protect against negative transients.

5KP170A-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):: 170V

Voltage - Breakdown (Min):: 189V

Voltage - Clamping (Max) @ Ipp:: 275V

Current - Peak Pulse (10/1000µs):: 18.2A

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

5KP170A-E3/51 FAQ

1.How can I place an order for 5KP170A-E3/51 through Aetrix?

Please submit a Request for Quotation (RFQ) for 5KP170A-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 5KP170A-E3/51 reliable?

The price and inventory of 5KP170A-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 5KP170A-E3/51 is usually 5 days.

3.What payment methods are accepted for 5KP170A-E3/51?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KP170A-E3/51 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 5KP170A-E3/51?

5KP170A-E3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 5KP170A-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 5KP170A-E3/51?

For technical support, including 5KP170A-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KP170A-E3/51 requirements.

6.How does Aetrix verify that 5KP170A-E3/51 is sourced from the original manufacturer or authorized distributors?

All 5KP170A-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 5KP170A-E3/51 meets industry standards.

7.What is the process for return or replacement of 5KP170A-E3/51?

All 5KP170A-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 5KP170A-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 5KP170A-E3/51 part is unused and in its original packaging.

Return procedure for 5KP170A-E3/51:

1.Submit a request within 90 days.

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

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