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Vishay General Semiconductor - Diodes Division P4KE68HE3/54
- Part No.:
- P4KE68HE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE68HE3/54.pdf
- Description:
- TVS DIODE 55.1VWM 98VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:2,232
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Product details
Overview
P4KE68HE3/54 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 and 71.4 V maximum breakdown voltage (VBR at 1 mA), 58.1 V standoff voltage (VWM), 92.0 V clamping voltage (VC at 4.3 A), 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 P4KE68HE3/54 datasheet, P4KE68HE3/54 pinout, P4KE68HE3/54 application, or P4KE68HE3/54 equivalent, key selection criteria include its AEC-Q101 qualification, 175 °C max junction temperature, DO-41 mechanical compatibility, and verified clamping performance under repetitive surge conditions per IEC 61000-4-5.
Technical Context
The P4KE68HE3/54 operates as a silicon avalanche diode, leveraging glass-passivated junction technology to achieve fast response (<1 ns) and low incremental surge resistance. Its unidirectional polarity uses a cathode band marking and delivers symmetrical clamping only in reverse-biased mode, with forward voltage limited to 3.5 V at 25 A per specification.
Designed for transient suppression in DC power circuits, it complies with IEC 61000-4-5 surge immunity requirements when applied with appropriate series impedance. Thermal derating follows a linear curve above 25 °C ambient, with RθJA = 100 °C/W and RθJL = 66 °C/W enabling reliable operation up to TJ = 175 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 64.6 V / 71.4 V at 1 mA - defines precise avalanche initiation range for predictable clamping onset |
| VWM | 58.1 V - maximum continuous reverse operating voltage before leakage exceeds 1 μA |
| VC @ IPPM | 92.0 V at 4.3 A - clamped voltage during 10/1000 µs surge, limiting downstream stress |
| PPPM | 400 W - peak transient power handling capability under standardized surge waveform |
| TJ max | +175 °C - enables use in under-hood automotive and high-temperature industrial environments |
| Package | DO-41 (DO-204AL) - industry-standard axial leaded package with UL 94 V-0 molded epoxy body |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
DO-41 (DO-204AL) package: axial-leaded, molded epoxy body with matte tin-plated leads; cathode indicated by color band on one end; total length 25.4 mm min, body diameter 2.0–2.7 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side in unidirectional protection; conducts during forward surges up to 40 A IFSM |
| Cathode (banded end) | Reverse breakdown terminal | Connected to protected line; avalanches into low-impedance state when VREV > VBR, shunting surge current to ground |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity |
| 400 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 (4 kV) surge protection without external derating |
| AEC-Q101 qualification | Validated for automotive applications including engine control, body electronics, and ADAS sensors |
| Low clamping ratio (VC/VBR ≈ 1.31) | Minimizes overvoltage stress on downstream ICs compared to higher-ratio TVS devices |
| UL 94 V-0 molding compound | Meets flammability safety requirements for enclosed industrial and automotive enclosures |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed microcontroller power inputs in engine control units against load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VIN and GND, clamping reverse surges above 58.1 V while remaining inert during normal operation. Use Value: Limits peak voltage to 92.0 V during 400 W surges, preventing latch-up or permanent damage to 5 V/3.3 V logic supplies downstream. | Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loop) of pressure/temperature transmitters exposed to field wiring ESD and inductive switching noise. IC Role / Device Role / Timing Role: Connected across signal and return path to clamp bidirectional transients; used here in unidirectional configuration referenced to system ground. Use Value: Responds in <1 ns to suppress 8 kV contact ESD per IEC 61000-4-2, preserving signal integrity and ADC accuracy. |
| Consumer Power Adapter Input Stage | Telecom Line Card Surge Protection |
Use Scenario: Secondary-side DC input protection in wall adapters powering USB-C PD controllers and PMICs. IC Role / Device Role / Timing Role: Placed after rectification but before bulk capacitor to absorb residual AC-line coupled surges not filtered upstream. Use Value: Withstands 40 A non-repetitive forward surge (IFSM) and maintains VF ≤ 3.5 V, avoiding thermal runaway during repeated fault events. | Use Scenario: Front-end protection on -48 V telecom power distribution boards subject to lightning-induced longitudinal surges. IC Role / Device Role / Timing Role: Used in series with PTC or fuse on each feed rail; unidirectional orientation blocks negative surges while allowing normal negative bias operation. Use Value: Clamps to 92.0 V within nanoseconds, limiting energy delivered to downstream DC/DC converters and meeting GR-1089-CORE Level 3 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 |
|---|---|---|---|
| SMBJ64A | Surface-mount SMB package; 64 V VWM; 100 W PPPM; lower IPPM (32.4 A) | Requires PCB re-layout; suited for high-density consumer designs where DO-41 lead spacing is prohibitive | Select SMBJ64A when board space is constrained and surge levels remain ≤ 100 W; verify thermal pad layout for 1.5 W steady-state dissipation. |
| 1.5KE68A | Same DO-41 package; 68 V nominal VBR; 1500 W PPPM; higher VC (115 V); no AEC-Q101 qualification | Higher-power industrial motor drives where automotive qualification is unnecessary | Choose 1.5KE68A for cost-sensitive, non-automotive applications needing >400 W surge margin; accept larger VC and wider VBR tolerance. |
Compared with SMBJ64A and 1.5KE68A, the P4KE68HE3/54 uniquely balances AEC-Q101 compliance, 400 W surge capability, and DO-41 through-hole manufacturability - making it optimal for automotive Tier-1 suppliers requiring traceable, qualified components without SMT rework overhead.
Availability
P4KE68HE3/54 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor modules, and telecom power distribution systems requiring stable component supply with full AEC-Q101 documentation and RoHS compliance.
Supply support for P4KE68HE3/54 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 application-specific performance.
The P4KE68HE3/54 belongs to Vishay's TRANSZORB® TVS family, engineered specifically for robust, standardized transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where failure modes must be rigorously controlled.
FAQ
What is the meaning of the 'HE3' suffix in P4KE68HE3/54?
The 'HE3' suffix in P4KE68HE3/54 indicates RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance. This distinguishes it from commercial-grade 'E3' variants and confirms suitability for automotive applications requiring extended reliability validation beyond standard JEDEC testing.
Does P4KE68HE3/54 support bidirectional transient suppression?
No, P4KE68HE3/54 is a unidirectional TVS diode, as confirmed by its part number ending in 'A' (not 'CA') and its specified polarity in the Vishay datasheet. Bidirectional operation requires a 'CA' variant such as P4KE68CA; using P4KE68HE3/54 in bidirectional configurations risks forward conduction damage during positive transients.
What is the maximum clamping voltage of P4KE68HE3/54 under surge conditions?
The maximum clamping voltage (VC) of P4KE68HE3/54 is 92.0 V at 4.3 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured per Figure 1 in the Vishay datasheet 88365 and represents the upper limit of voltage seen by protected circuitry during worst-case transient events.
Can P4KE68HE3/54 replace P4KE68A in an existing design?
Yes, P4KE68HE3/54 is a direct replacement for P4KE68A in terms of electrical parameters and DO-41 mechanical fit, but adds AEC-Q101 qualification and enhanced whisker resistance (Class 2). No PCB changes are required; however, users should verify that the higher reliability grade aligns with their qualification and traceability requirements.
What is the thermal resistance from junction to ambient for P4KE68HE3/54?
The typical thermal resistance from junction to ambient (RθJA) for P4KE68HE3/54 is 100 °C/W, measured with lead length L = 10 mm per JEDEC standards. This value governs steady-state power dissipation limits and must be applied with derating curves above 25 °C ambient to ensure TJ remains ≤ 175 °C.
P4KE68HE3/54 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):
- 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)
P4KE68HE3/54 FAQ
1.How can I place an order for P4KE68HE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE68HE3/54 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 P4KE68HE3/54 reliable?
The price and inventory of P4KE68HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE68HE3/54 is usually 5 days.
3.What payment methods are accepted for P4KE68HE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE68HE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE68HE3/54?
P4KE68HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE68HE3/54 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 P4KE68HE3/54?
For technical support, including P4KE68HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE68HE3/54 requirements.
6.How does Aetrix verify that P4KE68HE3/54 is sourced from the original manufacturer or authorized distributors?
All P4KE68HE3/54 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 P4KE68HE3/54 meets industry standards.
7.What is the process for return or replacement of P4KE68HE3/54?
All P4KE68HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE68HE3/54, 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 P4KE68HE3/54 part is unused and in its original packaging.
Return procedure for P4KE68HE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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