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Vishay General Semiconductor - Diodes Division P4KE68HE3/73
- Part No.:
- P4KE68HE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE68HE3/73.pdf
- Description:
- TVS DIODE 55.1VWM 98VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:2,701
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Product details
Overview
P4KE68HE3/73 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for robust overvoltage protection of sensitive electronics. It features a 64.6 V minimum breakdown voltage (VBR), 58.1 V maximum stand-off voltage (VWM), 92.0 V clamping voltage (VC) at 4.3 A peak pulse current, and 400 W peak pulse power rating with 10/1000 μs waveform - deployed on power rails and signal lines in automotive ECUs and industrial sensor interfaces.
For engineers reviewing the P4KE68HE3/73 datasheet, P4KE68HE3/73 pinout, P4KE68HE3/73 application, or P4KE68HE3/73 equivalent, key selection criteria include its AEC-Q101 qualification, 175 °C max junction temperature, low 0.104 %/°C VBR temperature coefficient, and verified 1.0 μA reverse leakage at VWM, critical for high-reliability 12 V/24 V system protection.
Technical Context
This TVS diode operates as a unidirectional clamping device with glass-passivated junction, enabling fast response (<1 ns) to transient surges induced by inductive load switching or ESD events. Its DO-41 package supports manual or wave soldering per JESD 22-B106 (275 °C, 10 s), and matte tin-plated leads ensure solderability per J-STD-002.
The device delivers 400 W peak pulse power dissipation under 10/1000 μs waveform with 0.01 % duty cycle, and exhibits 66 °C/W typical junction-to-lead thermal resistance. Its 1.5 W steady-state power dissipation and 40 A IFSM rating support surge resilience in automotive and industrial power supply inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 64.6 V / 71.4 V at 1.0 mA test current - defines reliable conduction onset under surge conditions |
| VWM | 58.1 V maximum - ensures no conduction during normal 12 V/24 V rail operation |
| VC @ IPPM | 92.0 V at 4.3 A - limits downstream voltage stress during 400 W transient events |
| IPPM | 4.3 A peak pulse current - quantifies surge current handling capacity under standard 10/1000 μs waveform |
| TJ max. | +175 °C - enables deployment in under-hood automotive environments and high-ambient industrial enclosures |
| Temperature Coefficient | 0.104 %/°C - ensures stable VBR across operating temperature range |
| Leakage Current | 1.0 μA at VWM - minimizes standby power loss in always-on circuits |
Pinout & Package
Package: DO-41 (DO-204AL), molded epoxy body with glass-passivated chip junction; matte tin-plated leads; RoHS-compliant and AEC-Q101 qualified (HE3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to circuit ground or lower-potential node during clamping |
| Cathode (banded end) | High-side surge input terminal | Accepts transient energy from protected line; color band identifies polarity |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| 400 W peak pulse power (10/1000 μs) | Withstands repetitive load-dump and ISO 7637-2 Pulse 5a transients without degradation |
| Low clamping ratio (VC/VBR ≈ 1.43) | Minimizes voltage overshoot during clamping, protecting downstream MOSFETs and ICs |
| Glass passivated junction | Ensures stable electrical parameters and long-term reliability under humidity and thermal stress |
| UL 94 V-0 molding compound | Meets flammability safety requirements for enclosed industrial and automotive assemblies |
Applications
| Automotive Power Supply Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed microcontroller power inputs in engine control units against load dump transients up to ±100 V. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between VIN and GND, activated within <1 ns of overvoltage event. Use Value: Limits voltage seen by LDO regulator to ≤92.0 V, preventing latch-up or permanent damage during ISO 7637-2 Pulse 5a events. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loop) of pressure sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: Standby-mode protector on signal path; conducts only during ESD or inductive kick events. Use Value: Maintains signal integrity with <1.0 μA leakage at 24 V nominal, while clamping 8 kV contact ESD to <92.0 V. |
| Consumer Power Adapter Input Stage | Telecom DC Power Feeds |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters for smart home hubs, guarding against transformer flyback spikes. IC Role / Device Role / Timing Role: Fast-response unidirectional clamp on +5 V or +12 V output rail before USB or Ethernet interface ICs. Use Value: Prevents damage to USB-PD controllers and PHYs by limiting transient excursions to ≤92.0 V with 4.3 A surge current capability. |
Use Scenario: Primary protection on -48 V DC telecom power distribution boards feeding base station RF modules. IC Role / Device Role / Timing Role: Cathode-connected to -48 V rail, anode to chassis ground - clamps positive-going surges to safe levels. Use Value: Sustains 400 W peak pulse power without parameter shift, supporting GR-1089-CORE compliance for central office equipment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64A | DO-214AA package; 64 V VWM; 100 W peak pulse power; lower IPPM (32.4 A) | Higher power density but lower surge rating; suited for space-constrained PCBs with moderate transients | Select SMBJ64A when board area is limited and peak surge energy is ≤100 W; not drop-in due to different footprint and thermal profile |
| 1.5KE68A | DO-201AD package; same VWM/VBR specs; 1500 W peak pulse power; higher IPPM (11.7 A) | Designed for higher-energy transients (e.g., lightning-induced surges); larger thermal mass | Choose 1.5KE68A for industrial mains-input protection where >400 W surge immunity is required; requires layout change |
Compared with SMBJ64A and 1.5KE68A, the P4KE68HE3/73 offers balanced 400 W surge capability in the legacy DO-41 form factor, AEC-Q101 qualification for automotive use, and optimal thermal resistance (66 °C/W) for through-hole mounting - making it ideal for cost-sensitive, high-volume 12 V/24 V systems requiring proven field reliability.
Availability
P4KE68HE3/73 is available at Aetrix Electronics and suitable for automotive ECU designs, industrial sensor modules, consumer power adapter inputs, and telecom DC feed protection requiring stable component supply and AEC-Q101 compliance.
Supply support for P4KE68HE3/73 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 validation.
The P4KE68HE3/73 belongs to Vishay's TRANSZORB® family of transient voltage suppressors, engineered specifically for robust, standardized overvoltage protection in harsh environments including automotive, industrial, and telecom infrastructure.
FAQ
What is the clamping voltage of the P4KE68HE3/73 and how is it measured?
The P4KE68HE3/73 has a maximum clamping voltage (VC) of 92.0 V, measured at its rated peak pulse current (IPPM) of 4.3 A using a 10/1000 μs waveform. This value reflects the actual voltage imposed on the protected circuit during a standardized surge event and is guaranteed per Vishay Document Number 88365. The P4KE68HE3/73 maintains this clamping performance across its full operating temperature range.
Is the P4KE68HE3/73 suitable for automotive applications?
Yes, the P4KE68HE3/73 is AEC-Q101 qualified, meaning it has passed rigorous stress tests including temperature cycling, high-temperature reverse bias, and ESD robustness required for automotive electronic modules. Its 175 °C maximum junction temperature and DO-41 package with matte tin leads support under-hood deployment. The P4KE68HE3/73 is explicitly designated for automotive use in Vishay's ordering nomenclature (HE3 suffix).
What does the "HE3" suffix indicate in P4KE68HE3/73?
The "HE3" suffix in P4KE68HE3/73 denotes two key attributes: "H" indicates AEC-Q101 qualification, and "E3" specifies RoHS-compliant construction with JESD 201 Class 1A whisker resistance. This distinguishes it from commercial-grade "E3" variants (e.g., P4KE68A-E3) and confirms its suitability for automotive and high-reliability industrial applications. The P4KE68HE3/73 meets both material and reliability standards defined in Vishay documentation.
How does the P4KE68HE3/73 compare to bidirectional TVS diodes like P4KE68CA?
The P4KE68HE3/73 is unidirectional and features a cathode band for polarity-sensitive placement, whereas P4KE68CA is bidirectional with no polarity marking and symmetric clamping in both directions. The P4KE68HE3/73 offers lower leakage (1.0 μA at VWM) and is optimized for DC rail protection, while P4KE68CA suits AC-coupled or floating signal lines. Their VBR and VC values differ slightly due to internal structure - the P4KE68HE3/73 is not interchangeable with P4KE68CA without circuit review.
What is the thermal resistance of the P4KE68HE3/73 and why does it matter?
The P4KE68HE3/73 has a typical junction-to-lead thermal resistance (RθJL) of 66 °C/W, measured with lead length = 10 mm. This parameter directly impacts sustained surge handling: lower RθJL enables faster heat transfer from the silicon junction to the PCB copper or heatsink, reducing thermal runaway risk during repetitive transients. For the P4KE68HE3/73, this value supports reliable operation at elevated ambient temperatures common in automotive and industrial settings.
P4KE68HE3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AL, DO-41, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 55.1V
- Voltage - Breakdown (Min):
- 61.2V
- Voltage - Clamping (Max) @ Ipp:
- 98V
- Current - Peak Pulse (10/1000µs):
- 4.1A
- 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)
P4KE68HE3/73 FAQ
1.How can I place an order for P4KE68HE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE68HE3/73 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 P4KE68HE3/73 reliable?
The price and inventory of P4KE68HE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE68HE3/73 is usually 5 days.
3.What payment methods are accepted for P4KE68HE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE68HE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE68HE3/73?
P4KE68HE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE68HE3/73 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 P4KE68HE3/73?
For technical support, including P4KE68HE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE68HE3/73 requirements.
6.How does Aetrix verify that P4KE68HE3/73 is sourced from the original manufacturer or authorized distributors?
All P4KE68HE3/73 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 P4KE68HE3/73 meets industry standards.
7.What is the process for return or replacement of P4KE68HE3/73?
All P4KE68HE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE68HE3/73, 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 P4KE68HE3/73 part is unused and in its original packaging.
Return procedure for P4KE68HE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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