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

Vishay General Semiconductor - Diodes Division P6KE6.8A/54

Name: P6KE6.8A/54
Brand: Vishay General Semiconductor - Diodes Division
SKU: P6KE6.8A/54
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: P6KE6.8A/54

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: TVS Diodes

Package:: DO-204AC, DO-15, Axial

Datasheet:: P6KE6.8A/54.pdf

Description:: TVS DO15 5.8V 600W UNIDIR

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Product details

Overview

P6KE6.8A/54 from Littelfuse is a unidirectional glass-passivated junction transient voltage suppressor (TVS) diode designed for primary overvoltage protection in DC power rails and signal lines. It features a 6.45–7.14 V breakdown voltage (V_BR), 10.5 V clamping voltage (V_C) at 57.1 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed in telecom interface protection, automotive ECU input conditioning, and industrial sensor front-ends.

For engineers reviewing the P6KE6.8A/54 datasheet, P6KE6.8A/54 pinout, P6KE6.8A/54 application, or P6KE6.8A/54 equivalent, key selection criteria include its DO-204AC axial package compatibility, low 0.057 %/°C V_BR temperature coefficient, sub-1 ps response time, and UL 497B listing for telecom surge immunity - all critical for robust 5 V rail protection where leakage <1 µA above 10 V and fast clamping are mandatory.

Technical Context

The P6KE6.8A/54 operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its specified V_BR range (6.45–7.14 V at 10 mA test current). Its glass-passivated junction ensures stable breakdown characteristics and high reliability under repeated transient stress.

It delivers 10.5 V clamping voltage at 57.1 A peak pulse current (10/1000 µs), with steady-state power dissipation of 5.0 W at 75 °C lead temperature and maximum forward voltage of 3.5 V at 50 A - confirming suitability for low-voltage DC bus protection where minimal voltage overshoot and thermal stability are required.

Key Specifications

Parameter	Value and Actual Design Meaning
V_BR Min/Max	6.45 V / 7.14 V at 10 mA - defines precise conduction onset for 5 V system protection without false triggering
V_C @ I_PPM	10.5 V at 57.1 A - limits downstream IC voltage stress during 600 W transients
I_PPM	57.1 A (10/1000 µs) - quantifies maximum surge current handling before clamping degradation
V_WM	5.80 V - maximum working voltage; ensures no conduction during normal 5 V rail operation
I_D @ V_WM	<1 µA - guarantees negligible standby leakage in battery-powered or low-power sensor nodes
T_J/T_STG	−55 °C to +175 °C - supports deployment in under-hood automotive and industrial environments
Temp Coeff	0.057 %/°C - enables predictable V_BR drift across wide ambient ranges

Pinout & Package

Package: DO-204AC (Axial lead, glass-passivated junction, JEDEC-standard molded plastic body; cathode indicated by color band).

Pin/Terminal	Circuit Role	Design Meaning
Anode (non-banded end)	Forward current path / ground reference	Connected to circuit ground or low-side return; carries full surge current during clamping
Cathode (banded end)	Reverse-biased protection node	Connected to protected line (e.g., 5 V rail); avalanche conduction begins here when V_REV > V_BR

Key Features

Feature	Design Value
Glass-passivated junction	Ensures long-term V_BR stability and resistance to humidity-induced parameter shift in harsh environments
600 W peak pulse power (10/1000 µs)	Withstands IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 5 V lines without degradation
Clamping ratio V_C/V_BR ≈ 1.47	Delivers tight overvoltage control - critical for protecting 5.5 V absolute-maximum-rated ICs
UL 497B listed (E136766)	Validated for telecom interface protection including DSL, T1/E1, and PoE-powered equipment
Fast response time <1 ps	Activates before most microsecond-scale transients fully develop - prevents latch-up in CMOS inputs

Applications

Telecom Line Interface	Automotive Body Control Module
Use Scenario: Protection of RS-232/RS-485 transceivers and DSL line drivers against lightning-induced surges and AC power cross-talk. IC Role / Device Role: Primary shunt clamp on data line inputs, placed upstream of ESD diodes and series impedance. Use Value: Limits line voltage to ≤10.5 V during 57.1 A transients, preserving transceiver integrity per ITU-T K.20/K.21 requirements.	Use Scenario: Input protection for 5 V microcontroller GPIOs monitoring door lock actuators, window switches, and mirror controls. IC Role / Device Role: Unidirectional TVS on each switch input to absorb load-dump and inductive kickback energy. Use Value: Withstands 175 °C junction temperature and maintains <1 µA leakage at 5.8 V - enabling reliable operation in hot under-dash locations.
Industrial Sensor Signal Conditioning	Power Supply Input Stage
Use Scenario: Guarding 4–20 mA loop-powered sensor outputs against field wiring faults and EFT bursts. IC Role / Device Role: Low-leakage shunt protector on analog output pins, paired with current-limiting resistor. Use Value: Sub-1 µA leakage at 5.8 V prevents output current error; 10.5 V clamping avoids saturation of op-amp output stages.	Use Scenario: Secondary overvoltage clamp on 5 V DC-DC converter output, supplementing primary OVP circuitry. IC Role / Device Role: Fast-acting crowbar element that activates only during catastrophic regulator failure or external surge injection. Use Value: 600 W pulse rating absorbs >10× typical 5 V rail surge energy; DO-204AC axial form enables manual rework and high-reliability solder joints.

Telecom Line Interface

Automotive Body Control Module

Use Scenario: Protection of RS-232/RS-485 transceivers and DSL line drivers against lightning-induced surges and AC power cross-talk.

IC Role / Device Role: Primary shunt clamp on data line inputs, placed upstream of ESD diodes and series impedance.

Use Value: Limits line voltage to ≤10.5 V during 57.1 A transients, preserving transceiver integrity per ITU-T K.20/K.21 requirements.

Use Scenario: Input protection for 5 V microcontroller GPIOs monitoring door lock actuators, window switches, and mirror controls.

IC Role / Device Role: Unidirectional TVS on each switch input to absorb load-dump and inductive kickback energy.

Use Value: Withstands 175 °C junction temperature and maintains <1 µA leakage at 5.8 V - enabling reliable operation in hot under-dash locations.

Industrial Sensor Signal Conditioning

Power Supply Input Stage

Use Scenario: Guarding 4–20 mA loop-powered sensor outputs against field wiring faults and EFT bursts.

IC Role / Device Role: Low-leakage shunt protector on analog output pins, paired with current-limiting resistor.

Use Value: Sub-1 µA leakage at 5.8 V prevents output current error; 10.5 V clamping avoids saturation of op-amp output stages.

Use Scenario: Secondary overvoltage clamp on 5 V DC-DC converter output, supplementing primary OVP circuitry.

IC Role / Device Role: Fast-acting crowbar element that activates only during catastrophic regulator failure or external surge injection.

Use Value: 600 W pulse rating absorbs >10× typical 5 V rail surge energy; DO-204AC axial form enables manual rework and high-reliability solder joints.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SMBJ6.8A	DO-214AA surface-mount package; same V_BR (6.45–7.14 V), slightly higher V_C (11.2 V @ 53.3 A)	Requires PCB redesign for SMT placement; better suited for high-density layouts but less serviceable	Select SMBJ6.8A only when board space is constrained and automated assembly is used.
1.5KE6.8A	Same DO-204AC package; higher 1500 W peak power, larger physical size (0.300" × 0.140"), higher V_C (10.8 V @ 139 A)	Over-specified for 5 V rail protection; introduces unnecessary thermal mass and cost	Choose 1.5KE6.8A only if legacy design requires backward compatibility with 1.5 kW surge standards.

Compared with SMBJ6.8A and 1.5KE6.8A, the P6KE6.8A/54 offers optimal balance of axial through-hole serviceability, precise 5 V system clamping, and UL-certified telecom compliance - making it the preferred choice for cost-sensitive, repairable, and standards-driven designs.

Availability

P6KE6.8A/54 is available at Aetrix Electronics and suitable for telecom interface protection, automotive body electronics, and industrial sensor signal conditioning requiring stable component supply, long-lifecycle support, and traceable sourcing.

Supply support for P6KE6.8A/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

Littelfuse is a global leader in circuit protection, specializing in fuses, TVS diodes, and surge suppression solutions for automotive, industrial, and telecom markets.

The P6KE series was engineered for cost-effective, high-reliability transient suppression in commercial and industrial DC systems - emphasizing fast response, stable breakdown, and UL-recognized performance in real-world surge environments.

FAQ

What is the breakdown voltage tolerance of the P6KE6.8A/54?

The P6KE6.8A/54 has a guaranteed breakdown voltage range of 6.45 V to 7.14 V at 10 mA test current (V_BR), corresponding to ±5% tolerance around the nominal 6.8 V rating. This tight spread ensures consistent activation timing across production lots and supports reliable 5 V rail protection without marginal conduction during normal operation.

Is the P6KE6.8A/54 suitable for bidirectional signal line protection?

No - the P6KE6.8A/54 is a unidirectional TVS diode, intended for DC power rail or single-polarity signal protection. For bidirectional applications such as AC-coupled data lines or RS-485, the P6KE6.8CA variant must be used. The "A" suffix in P6KE6.8A/54 denotes tighter V_BR tolerance, not bidirectional capability.

What is the maximum clamping voltage of the P6KE6.8A/54 under surge conditions?

The P6KE6.8A/54 clamps to a maximum of 10.5 V at 57.1 A peak pulse current (10/1000 µs waveform). This value is measured per ANSI/IEEE C62.35 and represents the upper limit of voltage seen by downstream components during worst-case transient events - critical for ensuring compatibility with 5.5 V absolute-maximum-rated ICs.

Does the P6KE6.8A/54 meet UL safety standards?

Yes - the P6KE6.8A/54 is UL listed under file E136766 for Telecom Application Protection per UL 497B, covering both unidirectional and bidirectional variants in the P6KE family. This certification validates its performance in telecom infrastructure equipment subject to lightning-induced surges and AC power cross-talk.

How does the P6KE6.8A/54 compare to the standard P6KE6.8 in terms of electrical performance?

The P6KE6.8A/54 offers tighter breakdown voltage tolerance (6.45–7.14 V vs. 6.12–7.48 V for P6KE6.8) and lower clamping voltage (10.5 V vs. 10.8 V at rated I_PPM). Both share identical DO-204AC packaging, 600 W rating, and thermal specifications - making P6KE6.8A/54 preferable where precise threshold control and minimized overvoltage stress are required.

P6KE6.8A/54 Specifications

Product attributes: Attribute value

Manufacturer:: Vishay General Semiconductor - Diodes Division

Package/Case:: DO-204AC, DO-15, Axial

Series:: P6KE

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Type:: -

Unidirectional Channels:: 1

Bidirectional Channels:: -

Voltage - Reverse Standoff (Typ):: 5.8V

Voltage - Breakdown (Min):: 6.45V

Voltage - Clamping (Max) @ Ipp:: 10.5V

Current - Peak Pulse (10/1000µs):: 57A

Power - Peak Pulse:: 600W

Power Line Protection:: Yes

Applications:: General Purpose

Capacitance @ Frequency:: -

Operating Temperature:: -55°C ~ 150°C

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: DO-15

P6KE6.8A/54 FAQ

1.How can I place an order for P6KE6.8A/54 through Aetrix?

Please submit a Request for Quotation (RFQ) for P6KE6.8A/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 P6KE6.8A/54 reliable?

The price and inventory of P6KE6.8A/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE6.8A/54 is usually 5 days.

3.What payment methods are accepted for P6KE6.8A/54?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE6.8A/54 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for P6KE6.8A/54?

P6KE6.8A/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your P6KE6.8A/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 P6KE6.8A/54?

For technical support, including P6KE6.8A/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE6.8A/54 requirements.

6.How does Aetrix verify that P6KE6.8A/54 is sourced from the original manufacturer or authorized distributors?

All P6KE6.8A/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 P6KE6.8A/54 meets industry standards.

7.What is the process for return or replacement of P6KE6.8A/54?

All P6KE6.8A/54 units undergo pre-shipment inspection (PSI). If there is an issue with P6KE6.8A/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 P6KE6.8A/54 part is unused and in its original packaging.

Return procedure for P6KE6.8A/54:

1.Submit a request within 90 days.

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

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