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Vishay General Semiconductor - Diodes Division P4KE6.8-E3/54
- Part No.:
- P4KE6.8-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE6.8-E3/54.pdf
- Description:
- TVS DIODE 5.5VWM 10.8VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:8,395
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Product details
Overview
P4KE6.8-E3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for primary overvoltage protection of sensitive electronics. It features a 6.8 V breakdown voltage (VBR min 6.45 V, max 7.14 V), 5.8 V stand-off voltage (VWM), 10.5 V clamping voltage (VC) at 38.1 A peak pulse current, and 400 W peak pulse power rating with 10/1000 μs waveform - used to safeguard ICs and MOSFETs against inductive switching transients.
For engineers reviewing the P4KE6.8-E3/54 datasheet, P4KE6.8-E3/54 pinout, P4KE6.8-E3/54 application, or P4KE6.8-E3/54 equivalent, key selection criteria include its unidirectional polarity, glass-passivated junction, AEC-Q101 qualification (E3 suffix denotes RoHS-compliant commercial grade), low clamping ratio (VC/VBR ≈ 1.55), and compatibility with J-STD-002 solderability standards.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (≤1000 μA leakage at 5.8 V), then rapidly avalanches below 10.5 V to divert surge energy away from downstream circuitry. Its glass-passivated junction ensures stable VBR tolerance (±5% typical) and low incremental surge resistance, enabling consistent clamping performance across repetitive transients.
The device is rated for 40 A non-repetitive forward surge current (8.3 ms half-sine), supports operating junction temperatures from –55 °C to +175 °C, and exhibits a positive temperature coefficient of VBR (+0.057 %/°C), ensuring predictable voltage shift during thermal stress without catastrophic failure.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.45 V / 7.14 V at 10 mA test current - defines precise avalanche initiation window for reliable overvoltage triggering |
| VWM | 5.8 V - maximum continuous reverse working voltage before leakage exceeds 1000 μA; sets safe operating margin below VBR |
| VC @ IPPM | 10.5 V at 38.1 A - clamping voltage during 400 W transient; limits downstream voltage stress to ≤10.5 V |
| PPPM | 400 W (10/1000 μs waveform) - peak surge energy handling capacity for industrial-grade transient immunity |
| IFSM | 40 A (8.3 ms half-sine) - robustness against single-event inrush surges in power supply rails or motor drivers |
| TJ max | +175 °C - extended thermal capability enables use in under-hood automotive or high-ambient industrial environments |
| RθJL | 66 °C/W - low junction-to-lead thermal resistance supports effective heat dissipation through PCB copper pours |
Pinout & Package
Package: DO-41 (DO-204AL), axial-leaded, molded epoxy body with matte tin-plated leads. Cathode indicated by color band; compliant with UL 94 V-0 flammability rating and JESD 22-B106 solder dip (275 °C, 10 s).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to ground or lower-potential rail in unidirectional configuration; carries full surge current during clamping |
| Cathode | Avalanche-triggered clamping terminal | Marked end (color band); connected to protected line; initiates breakdown when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures ±5% VBR tolerance and long-term stability under thermal cycling and humidity exposure |
| 400 W peak pulse power (10/1000 μs) | Provides immunity to IEC 61000-4-5 Level 3 (1 kV/2 Ω) surge events without degradation |
| AEC-Q101 qualified (E3 suffix) | Validated for automotive electronics per stress-test requirements including HTGB, HTRB, and TCT |
| Low clamping ratio (VC/VBR = 1.55) | Minimizes voltage overshoot during transient suppression, protecting 5 V logic and analog front-ends |
| Solderable per J-STD-002 | Guarantees reliable wetting and joint integrity during wave or reflow assembly processes |
Applications
| Automotive Power Supply Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 5 V microcontroller power rails from load-dump and alternator ripple in vehicle ECUs. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed between VCC and GND, responding within <1 ns to clamp spikes above 5.8 V. Use Value: Prevents latch-up or permanent damage to MCU IOs and internal regulators during ISO 7637-2 Pulse 5a events. |
Use Scenario: Safeguarding RS-485 transceiver inputs on factory-floor sensor nodes exposed to ESD and cable-induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS on signal lines referenced to local ground, absorbing ±2 kV contact ESD per IEC 61000-4-2. Use Value: Maintains signal integrity while limiting voltage excursion to ≤10.5 V, preserving transceiver functionality without shutdown. |
| Consumer USB Port ESD Protection | Telecom Line Card Surge Suppression |
|
Use Scenario: Secondary-level protection on USB VBUS lines in set-top boxes and smart displays subjected to user-handling ESD. IC Role / Device Role / Timing Role: Standoff-rated TVS (VWM = 5.8 V) placed upstream of polyfuse and LDO, clamping fast transients before they reach power management ICs. Use Value: Enables compliance with IEC 61000-4-2 Level 4 (8 kV contact) without adding capacitance that degrades USB 2.0 signal rise time. |
Use Scenario: Primary surge protection on telephone line interface circuits in VoIP gateways and PBX systems. IC Role / Device Role / Timing Role: Front-end shunt device on tip/ring lines, coordinated with gas discharge tube (GDT) for multi-stage protection per GR-1089-CORE. Use Value: Handles 400 W line surges (e.g., lightning-induced) while maintaining low let-through voltage to protect downstream SLIC and codec ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.8A | Surface-mount SMB package (vs. axial DO-41); same VBR range (6.45–7.14 V), identical 400 W rating, but lower IPPM (38.1 A vs. 37.5 A) | Requires PCB redesign for SMT placement; better suited for space-constrained consumer boards | Select SMBJ6.8A when automated assembly and board density outweigh through-hole serviceability needs |
| 1.5KE6.8A | Higher peak pulse power (1500 W vs. 400 W); same DO-41 package and VBR, but larger die and higher VC (10.5 V vs. 11.2 V) | Overqualified for low-energy transients; introduces higher clamping voltage and thermal mass | Choose 1.5KE6.8A only when system-level testing confirms need for >400 W surge handling, such as AC mains-connected equipment |
Compared with SMBJ6.8A and 1.5KE6.8A, the P4KE6.8-E3/54 delivers optimal balance of proven reliability in through-hole designs, precise 5.8 V standoff margin for 5 V systems, and cost-effective manufacturability - making it ideal for legacy automotive modules and industrial control panels where DO-41 remains standard.
Availability
P4KE6.8-E3/54 is available at Aetrix Electronics and suitable for automotive power supply protection, industrial sensor interface protection, and consumer USB port ESD protection requiring stable component supply across production lifecycles.
Supply support for P4KE6.8-E3/54 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and passive components with emphasis on reliability, power efficiency, and automotive-grade qualification.
The P4KE6.8-E3/54 belongs to Vishay's TRANSZORB® TVS family, engineered specifically for robust, standardized transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where repeatable clamping performance and AEC-Q101 validation are mandatory.
FAQ
What is the exact breakdown voltage range for P4KE6.8-E3/54?
The P4KE6.8-E3/54 has a guaranteed breakdown voltage (VBR) range of 6.45 V to 7.14 V measured at 10 mA test current (IT), per Vishay Document 88365. This tight ±5% tolerance ensures consistent triggering behavior across production lots and temperature ranges, critical for protecting 5 V logic rails without false triggering.
Is P4KE6.8-E3/54 unidirectional or bidirectional?
P4KE6.8-E3/54 is a unidirectional TVS diode, as confirmed by its part number suffix "A" (not "CA") and explicit designation in Vishay's datasheet Table 1. It conducts only in reverse bias during avalanche, with cathode marked by a color band - making it suitable for DC power line and signal-line protection where polarity is fixed.
Does P4KE6.8-E3/54 meet automotive qualification standards?
Yes, the P4KE6.8-E3/54 is RoHS-compliant and qualified to AEC-Q101 for stress testing including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling (TCT). The "E3" suffix indicates commercial-grade qualification; for full automotive-grade variants, Vishay offers the HE3-suffixed version (e.g., P4KE6.8AHE3/54).
What is the clamping voltage of P4KE6.8-E3/54 at its rated surge current?
The P4KE6.8-E3/54 clamps to a maximum of 10.5 V at its peak pulse current (IPPM) of 38.1 A, defined by the 10/1000 μs waveform. This low VC ensures downstream 5 V ICs remain within absolute maximum ratings during surge events, directly supporting IEC 61000-4-5 compliance in end-equipment design.
Can P4KE6.8-E3/54 be used in surface-mount designs?
No - P4KE6.8-E3/54 uses the axial DO-41 (DO-204AL) package with leaded terminals and is not compatible with SMT assembly. For surface-mount equivalents, engineers should consider the SMBJ6.8A (SMB package) or SMCJ6.8A (SMC package), which share identical electrical characteristics but require footprint and reflow profile changes.
P4KE6.8-E3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AL, DO-41, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5.5V
- Voltage - Breakdown (Min):
- 6.12V
- Voltage - Clamping (Max) @ Ipp:
- 10.8V
- Current - Peak Pulse (10/1000µs):
- 37A
- Power - Peak Pulse:
- 400W
- 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-204AL (DO-41)
P4KE6.8-E3/54 FAQ
1.How can I place an order for P4KE6.8-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE6.8-E3/54 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 P4KE6.8-E3/54 reliable?
The price and inventory of P4KE6.8-E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE6.8-E3/54 is usually 5 days.
3.What payment methods are accepted for P4KE6.8-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE6.8-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE6.8-E3/54?
P4KE6.8-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE6.8-E3/54 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 P4KE6.8-E3/54?
For technical support, including P4KE6.8-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE6.8-E3/54 requirements.
6.How does Aetrix verify that P4KE6.8-E3/54 is sourced from the original manufacturer or authorized distributors?
All P4KE6.8-E3/54 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 P4KE6.8-E3/54 meets industry standards.
7.What is the process for return or replacement of P4KE6.8-E3/54?
All P4KE6.8-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE6.8-E3/54, 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 P4KE6.8-E3/54 part is unused and in its original packaging.
Return procedure for P4KE6.8-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE6.8-E3/54 Tags
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