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Vishay General Semiconductor - Diodes Division P4KE6.8HE3/54
- Part No.:
- P4KE6.8HE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE6.8HE3/54.pdf
- Description:
- TVS DIODE 5.5VWM 10.8VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:2,164
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Product details
Overview
P4KE6.8HE3/54 from Vishay General Semiconductor is a unidirectional TransZORB® transient voltage suppressor diode in DO-41 package, designed for primary overvoltage protection of DC power rails and signal lines. It features 6.45 V to 7.14 V breakdown voltage (VBR) at 10 mA, 5.8 V maximum stand-off voltage (VWM), 1000 µA reverse leakage at VWM, 38.1 A peak pulse current (IPPM), and clamps transients to ≤10.5 V at rated surge. It is AEC-Q101 qualified and used in automotive sensor interface protection.
For engineers reviewing the P4KE6.8HE3/54 datasheet, P4KE6.8HE3/54 pinout, P4KE6.8HE3/54 application, or P4KE6.8HE3/54 equivalent, key selection criteria include unidirectional polarity, DO-41 mechanical compatibility, 400 W 10/1000 µs surge rating, thermal resistance (RθJL = 66 °C/W), and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This device operates as a silicon avalanche diode with glass-passivated junction, optimized for fast clamping (<1 ns response) of inductive switching spikes and ESD events. Its unidirectional configuration provides cathode-marked polarity, enabling integration into DC-biased circuits where reverse conduction must be blocked.
It delivers 400 W peak pulse power per 10/1000 µs waveform at 0.01 % duty cycle, with thermal derating above 25 °C ambient and junction temperature limits up to +175 °C. The 1.5 W steady-state power dissipation supports continuous operation on infinite heatsink at TL = 75 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 6.45 V / 7.14 V at IT = 10 mA - defines precise avalanche initiation threshold for reliable overvoltage triggering |
| VWM | 5.8 V - maximum continuous reverse voltage before significant leakage; sets safe operating margin below VBR |
| IPPM | 38.1 A at 10/1000 µs - peak surge current capability determines protection level against defined transient waveforms |
| VC | ≤10.5 V at IPPM - clamping voltage limits stress on downstream ICs during surge events |
| PPPM | 400 W - standardized surge power rating enables direct comparison across TVS families under identical test conditions |
| TJ max | +175 °C - high junction temperature rating supports under-hood automotive placement and extended thermal design margin |
| RθJL | 66 °C/W - low junction-to-lead thermal resistance enables effective heat transfer to PCB copper or heatsink |
Pinout & Package
Package: DO-41 (DO-204AL), molded epoxy body with matte tin-plated leads; RoHS-compliant and AEC-Q101 qualified (HE3 suffix). Cathode indicated by color band on body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional protection configuration |
| Cathode | Avalanche clamping terminal | Marked with color band; connected to protected line (e.g., 5 V rail or sensor output) to clamp positive transients |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enables stable, repeatable avalanche characteristics and long-term reliability under repeated surge stress |
| 400 W peak pulse power (10/1000 µs) | Provides robust protection against ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 Level 3 surges without degradation |
| AEC-Q101 qualification | Validates suitability for automotive applications including engine control units, body electronics, and ADAS sensor interfaces |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients, improving clamping precision and system-level immunity |
| Solder dip 275 °C / 10 s | Ensures lead finish integrity during wave soldering and reflow processes without delamination or joint failure |
Applications
| Automotive Sensor Protection | Industrial PLC Input Protection |
|---|---|
|
Use Scenario: Protecting analog outputs of temperature/pressure sensors in engine bay environments subject to load dump and inductive kick. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor output and microcontroller ADC input to clamp transients before signal conditioning stage. Use Value: Limits voltage to ≤10.5 V during 38.1 A surges, preventing ADC saturation and protecting 5 V-tolerant input pins per AEC-Q100 Grade 2 requirements. |
Use Scenario: Safeguarding 24 V digital inputs on programmable logic controllers exposed to relay coil switching noise in factory automation. IC Role / Device Role / Timing Role: Primary protection device on field-side input circuit, positioned ahead of optocoupler or Schmitt trigger interface. Use Value: Withstands repetitive 400 W surges while maintaining VWM = 5.8 V margin below 24 V nominal, ensuring no false triggering during normal operation. |
| Consumer Power Adapter Output | Telecom Line Interface |
|
Use Scenario: Secondary-side overvoltage suppression on 5 V USB-C PD adapter outputs vulnerable to feedback loop faults. IC Role / Device Role / Timing Role: Fast-acting shunt limiter that activates within nanoseconds to divert fault current away from downstream USB port controllers. Use Value: Clamps to ≤10.5 V before downstream ICs exceed absolute maximum ratings, meeting UL 62368-1 transient immunity requirements. |
Use Scenario: DC bias rail protection in PoE-powered Ethernet switches where 48 V supply lines experience hot-swap and cable discharge events. IC Role / Device Role / Timing Role: Standoff-rated TVS on 48 V input stage, selected for VWM = 5.8 V compatibility with upstream regulator dropout headroom. Use Value: Enables use with 48 V systems via series resistor limiting, leveraging 175 °C TJ max for sustained operation in enclosed telecom enclosures. |
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 | DO-214AA package; 600 W PPPM; higher IPPM (64.5 A); same VBR range but larger footprint | Preferred where board space allows larger SMD package and higher surge margin is required | Select SMBJ6.8A when upgrading from through-hole to surface-mount and requiring >400 W surge rating |
| P4KE6.8A-E3/54 | Same DO-41 package and electrical specs, but commercial-grade (non-AEC-Q101 qualified) | Suitable for non-automotive industrial or consumer applications where qualification is not mandated | Choose P4KE6.8A-E3/54 for cost-sensitive designs without automotive reliability requirements |
Compared with P4KE6.8HE3/54, SMBJ6.8A offers higher surge capacity in SMD form but requires PCB redesign, while P4KE6.8A-E3/54 provides identical protection in a lower-cost commercial variant-enabling qualification-driven part segmentation without circuit change.
Availability
P4KE6.8HE3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC inputs, and consumer power adapter protection requiring stable component supply with AEC-Q101 compliance and DO-41 through-hole compatibility.
Supply support for P4KE6.8HE3/54 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade validation.
The P4KE6.8HE3/54 belongs to Vishay's TransZORB® TVS family, engineered specifically for robust, standardized transient suppression in harsh environments including automotive, industrial, and telecom infrastructure.
FAQ
What is the breakdown voltage tolerance for P4KE6.8HE3/54?
The P4KE6.8HE3/54 has a specified breakdown voltage (VBR) range of 6.45 V to 7.14 V at test current IT = 10 mA. This ±5 % tolerance ensures consistent clamping behavior across production lots and supports reliable design margining against system overvoltage thresholds.
Is P4KE6.8HE3/54 suitable for bidirectional transient protection?
No, P4KE6.8HE3/54 is a unidirectional TVS diode, identified by the "A" suffix and cathode band marking. For bidirectional protection, Vishay specifies the "CA" suffix (e.g., P4KE6.8CA). Using P4KE6.8HE3/54 in AC-coupled or floating signal paths would result in forward conduction during negative transients.
What does the "HE3/54" suffix indicate in P4KE6.8HE3/54?
The "HE3" suffix denotes RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance; "/54" specifies the preferred package code for 13-inch paper tape and reel packaging with 5500 units per reel. This distinguishes it from commercial-grade P4KE6.8A-E3/54.
How does thermal resistance affect P4KE6.8HE3/54 performance in high-temperature environments?
P4KE6.8HE3/54 has RθJL = 66 °C/W, meaning junction temperature rises 66 °C per watt dissipated into the lead. In automotive under-hood applications exceeding 85 °C ambient, this value directly determines allowable surge repetition rate and steady-state power handling before reaching the +175 °C TJ limit.
Can P4KE6.8HE3/54 replace P4KE6.8A in an existing design?
Yes, P4KE6.8HE3/54 is mechanically and electrically identical to P4KE6.8A but adds AEC-Q101 qualification and enhanced whisker resistance (Class 2). No layout or schematic changes are needed; it is a drop-in upgrade for automotive or high-reliability industrial applications where qualification is required.
P4KE6.8HE3/54 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
P4KE6.8HE3/54 FAQ
1.How can I place an order for P4KE6.8HE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE6.8HE3/54 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 P4KE6.8HE3/54 reliable?
The price and inventory of P4KE6.8HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE6.8HE3/54 is usually 5 days.
3.What payment methods are accepted for P4KE6.8HE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE6.8HE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE6.8HE3/54?
P4KE6.8HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE6.8HE3/54 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 P4KE6.8HE3/54?
For technical support, including P4KE6.8HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE6.8HE3/54 requirements.
6.How does Aetrix verify that P4KE6.8HE3/54 is sourced from the original manufacturer or authorized distributors?
All P4KE6.8HE3/54 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 P4KE6.8HE3/54 meets industry standards.
7.What is the process for return or replacement of P4KE6.8HE3/54?
All P4KE6.8HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE6.8HE3/54, 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 P4KE6.8HE3/54 part is unused and in its original packaging.
Return procedure for P4KE6.8HE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE6.8HE3/54 Tags
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