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

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

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

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Part No.:: P6KE6.8CA/54

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: TVS Diodes

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

Datasheet:: P6KE6.8CA/54.pdf

Description:: TVS DIODE 5.8VWM 10.5VC DO204AC

Quantity:: RFQ Add To RFQ list

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Inventory:9,900

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Product details

Overview

P6KE6.8CA/54 from Littelfuse is a bidirectional transient voltage suppressor diode designed for primary-level overvoltage protection in telecom, industrial, and consumer power rails. It features a 6.8 V nominal breakdown voltage (V_BR = 6.12–7.48 V at I_T = 10 mA), 10.8 V clamping voltage (V_C) at 55.6 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - enabling robust ESD and lightning surge suppression in compact axial-leaded packages.

For engineers reviewing the P6KE6.8CA/54 datasheet, P6KE6.8CA/54 pinout, P6KE6.8CA/54 application, or P6KE6.8CA/54 equivalent, key selection criteria include bidirectional clamping symmetry, low V_C/V_BR ratio (1.59), sub-5 ns response time, UL 497B listing for telecom surge protection, and DO-204AC package compatibility with through-hole PCB layouts requiring high-reliability transient immunity.

Technical Context

The P6KE6.8CA/54 implements a glass-passivated PN junction optimized for fast, symmetric clamping in both polarities - critical for AC-coupled signal lines and ungrounded DC buses. Its 10/1000 µs waveform rating reflects standardized surge immunity testing per ANSI/IEEE C62.35, with thermal derating above 25°C ambient governed by Fig. 2 and steady-state dissipation limited to 5.0 W at T_L = 75°C on 40 × 40 mm copper pad.

Clamping performance is defined at I_PPM = 55.6 A, where V_C = 10.8 V establishes a maximum protected-voltage ceiling under worst-case transients. The device exhibits <1 µA reverse leakage at 5.5 V stand-off (V_WM), and its temperature coefficient of V_BR is +0.057 %/°C - ensuring stable threshold behavior across –55°C to +175°C operating range.

Key Specifications

Parameter	Value and Actual Design Meaning
Breakdown Voltage V_BR	6.12–7.48 V at 10 mA test current - defines precise conduction onset for bidirectional overvoltage triggering
Stand-off Voltage V_WM	5.50 V - maximum continuous reverse voltage before leakage exceeds 1000 µA, setting safe operating margin
Clamping Voltage V_C	10.8 V at 55.6 A peak pulse - limits downstream component stress during 600 W transient events
Peak Pulse Power	600 W (10/1000 µs) - enables single-event surge handling per IEC 61000-4-5 Level 4 without degradation
Response Time	<5.0 ns - ensures clamping activation before transient energy couples into sensitive circuitry
Operating Temperature	–55°C to +175°C - supports deployment in automotive engine bays, industrial PLCs, and outdoor telecom enclosures
UL Recognition	UL 497B listed (E136766) - certified for telecom primary-side surge protection per industry safety standard

Pinout & Package

Package: DO-204AC (Axial-leaded, glass-passivated plastic case per JEDEC standard; 0.230" × 0.300" body, 0.034" lead diameter).

Pin/Terminal	Circuit Role	Design Meaning
Anode / Cathode	Bidirectional terminal pair	No polarity marking required - symmetrical clamping in either direction; color band absent (CA suffix denotes bidirectional)
Leads (axial)	Mounting & thermal path	Solderable per MIL-STD-750 Method 2026; rated for 265°C/10 s high-temp soldering at 0.375" lead length

Key Features

Feature	Design Value
Glass-passivated junction	Enables stable V_BR tolerance and long-term reliability under humidity and thermal cycling
600 W peak pulse rating	Withstands 10/1000 µs surges up to 55.6 A without parametric shift or catastrophic failure
UL 497B certification	Validates compliance for telecom central office and customer premises equipment surge protection
Low clamping ratio (V_C/V_BR ≈ 1.59)	Minimizes protected-line overvoltage while maintaining sufficient margin above V_WM
Fast bidirectional response	Sub-5 ns turn-on ensures protection activation before transient energy propagates beyond local node

Applications

DSL Line Interface	Industrial PLC I/O Module
Use Scenario: Protects ADSL/VDSL line drivers and receivers from induced lightning surges on twisted-pair telephone lines. IC Role / Device Role / Timing Role: Primary-level bidirectional TVS placed at connector entry point to shunt common-mode transients before they reach PHY ICs. Use Value: Clamps 600 W surges to ≤10.8 V, preventing latch-up or gate oxide damage in line-driver amplifiers and data converters.	Use Scenario: Shields 24 V DC sensor inputs and relay outputs in factory automation controllers from inductive switching spikes. IC Role / Device Role / Timing Role: Standoff-rated TVS mounted directly at terminal block to clamp fast-rising transients (<5 ns) from solenoid coil collapse. Use Value: Limits voltage excursion to 10.8 V during 55.6 A pulses, preserving signal integrity and avoiding microcontroller reset or analog front-end saturation.
AC-DC Power Supply Input	Smart Meter Communication Port
Use Scenario: Safeguards bridge rectifier inputs and bulk capacitor charging paths against AC mains surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Bidirectional suppressor placed across L-N or L/N-PE to absorb differential-mode transients before input filter stage. Use Value: Withstands 600 W peak power without degradation, maintaining 5.5 V stand-off to avoid leakage-induced efficiency loss during normal operation.	Use Scenario: Secures RS-485 or HPLC communication interfaces in utility smart meters against EFT and surge coupling from power lines. IC Role / Device Role / Timing Role: Low-capacitance TVS integrated at physical layer connector to suppress fast transients without distorting 1 Mbps differential signaling. Use Value: Achieves <5 ns response and 10.8 V clamping to prevent receiver IC damage while meeting UL 497B telecom-grade immunity requirements.

DSL Line Interface

Industrial PLC I/O Module

Use Scenario: Protects ADSL/VDSL line drivers and receivers from induced lightning surges on twisted-pair telephone lines.

IC Role / Device Role / Timing Role: Primary-level bidirectional TVS placed at connector entry point to shunt common-mode transients before they reach PHY ICs.

Use Value: Clamps 600 W surges to ≤10.8 V, preventing latch-up or gate oxide damage in line-driver amplifiers and data converters.

Use Scenario: Shields 24 V DC sensor inputs and relay outputs in factory automation controllers from inductive switching spikes.

IC Role / Device Role / Timing Role: Standoff-rated TVS mounted directly at terminal block to clamp fast-rising transients (<5 ns) from solenoid coil collapse.

Use Value: Limits voltage excursion to 10.8 V during 55.6 A pulses, preserving signal integrity and avoiding microcontroller reset or analog front-end saturation.

AC-DC Power Supply Input

Smart Meter Communication Port

Use Scenario: Safeguards bridge rectifier inputs and bulk capacitor charging paths against AC mains surges per IEC 61000-4-5.

IC Role / Device Role / Timing Role: Bidirectional suppressor placed across L-N or L/N-PE to absorb differential-mode transients before input filter stage.

Use Value: Withstands 600 W peak power without degradation, maintaining 5.5 V stand-off to avoid leakage-induced efficiency loss during normal operation.

Use Scenario: Secures RS-485 or HPLC communication interfaces in utility smart meters against EFT and surge coupling from power lines.

IC Role / Device Role / Timing Role: Low-capacitance TVS integrated at physical layer connector to suppress fast transients without distorting 1 Mbps differential signaling.

Use Value: Achieves <5 ns response and 10.8 V clamping to prevent receiver IC damage while meeting UL 497B telecom-grade immunity requirements.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SMBJ6.8CA	DO-214AA surface-mount package; same V_BR (6.12–7.48 V), lower V_C = 11.2 V at 53.3 A, 600 W rating	Requires SMT reflow process; better suited for space-constrained PCBs with automated assembly	Select SMBJ6.8CA when board real estate is limited and wave-soldering is not used.
1.5KE6.8CA	Same DO-204AC package but higher 1500 W peak power; V_BR = 6.08–7.48 V, V_C = 11.5 V at 131 A	Over-spec'd for 600 W use cases; larger thermal mass may delay response slightly vs. P6KE series	Choose 1.5KE6.8CA only when legacy designs require backward-compatible footprint with higher surge margin.

Compared with SMBJ6.8CA and 1.5KE6.8CA, the P6KE6.8CA/54 delivers optimal balance of axial-leaded manufacturability, UL 497B compliance, and precise 6.8 V bidirectional clamping - making it preferred for cost-sensitive, through-hole telecom and industrial protection where 600 W surge rating suffices.

Availability

P6KE6.8CA/54 is available at Aetrix Electronics and suitable for DSL line protection, industrial PLC I/O modules, AC-DC power supply inputs, and smart meter communication ports requiring stable component supply and UL-certified surge immunity.

Supply support for P6KE6.8CA/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 applications where axial-leaded packaging, UL 497B compliance, and 600 W surge capability are essential design requirements.

FAQ

What is the clamping voltage of P6KE6.8CA/54 at its rated peak pulse current?

The P6KE6.8CA/54 has a maximum clamping voltage (V_C) of 10.8 V at 55.6 A peak pulse current (I_PPM) under 10/1000 µs waveform conditions. This value is measured per ANSI/IEEE C62.35 and guarantees that downstream components experience no more than 10.8 V during a full 600 W transient event. The P6KE6.8CA/54 maintains this clamping performance across its full operating temperature range of –55°C to +175°C.

Is P6KE6.8CA/54 suitable for telecom surge protection per UL 497B?

Yes, the P6KE6.8CA/54 is UL listed under file number E136766 for Telecom application protection per UL 497B - covering both unidirectional and bidirectional devices. This certification validates its suitability for primary-side surge protection in DSL modems, VoIP gateways, and central office equipment. The P6KE6.8CA/54 meets all electrical, thermal, and flammability (UL 94V-0) requirements specified in the standard.

How does the bidirectional functionality of P6KE6.8CA/54 differ from unidirectional variants like P6KE6.8A?

The P6KE6.8CA/54 provides symmetrical clamping in both directions - meaning its breakdown and clamping characteristics apply identically for positive and negative transients, with no cathode/anode polarity requirement. In contrast, P6KE6.8A is unidirectional and requires correct orientation to protect against reverse-biased surges. The CA suffix in P6KE6.8CA/54 explicitly denotes bidirectional construction, confirmed by identical V_BR, V_C, and I_PPM values in both polarities.

What is the maximum steady-state power dissipation for P6KE6.8CA/54?

The P6KE6.8CA/54 has a maximum steady-state power dissipation (P_M(AV)) of 5.0 W at lead temperature (T_L) = 75°C, measured with 0.375" (9.5 mm) lead length mounted on a 40 × 40 mm copper pad. This rating assumes natural convection cooling and must be derated linearly above 25°C ambient per Fig. 2 in the datasheet. Exceeding this limit risks thermal runaway or accelerated parameter drift in the P6KE6.8CA/54.

Does P6KE6.8CA/54 have a specified junction capacitance?

No, junction capacitance (C_J) is not specified for the P6KE6.8CA/54 in the official datasheet. While Fig. 4 shows typical C_J curves for unidirectional P6KE devices, the bidirectional P6KE6.8CA/54 lacks published capacitance data - indicating it is not characterized or guaranteed for high-frequency signal line protection. For applications requiring known capacitance (e.g., USB or Ethernet), alternate TVS families such as SMAJ or SMCJ should be evaluated instead of the P6KE6.8CA/54.

P6KE6.8CA/54 Specifications

Product attributes: Attribute value

Manufacturer:: Vishay General Semiconductor - Diodes Division

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

Series:: TransZorb®

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Type:: Zener

Unidirectional Channels:: -

Bidirectional Channels:: 1

Voltage - Reverse Standoff (Typ):: 5.8V

Voltage - Breakdown (Min):: 6.45V

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

Current - Peak Pulse (10/1000µs):: 57.1A

Power - Peak Pulse:: 600W

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:: DO-204AC (DO-15)

P6KE6.8CA/54 FAQ

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

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

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

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

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

Note: Certain payment methods may incur a processing fee.

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

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

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

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

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

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

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

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

Return procedure for P6KE6.8CA/54:

1.Submit a request within 90 days.

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

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