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Vishay General Semiconductor - Diodes Division P4KE68CAHE3/54
- Part No.:
- P4KE68CAHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE68CAHE3/54.pdf
- Description:
- TVS DIODE 58.1VWM 92VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:6,084
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Product details
Overview
P4KE68CAHE3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for clamping voltage transients on signal or power lines. It features a 64.6 V minimum and 71.4 V maximum breakdown voltage (VBR) at 1 mA test current, 58.1 V stand-off voltage (VWM), 92.0 V maximum clamping voltage (VC) at 4.3 A peak pulse current, and 400 W peak pulse power rating with 10/1000 μs waveform - used to protect automotive sensor interfaces against inductive switching surges.
For engineers reviewing the P4KE68CAHE3/54 datasheet, P4KE68CAHE3/54 pinout, P4KE68CAHE3/54 application, or P4KE68CAHE3/54 equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, DO-41 mechanical dimensions, bidirectional clamping behavior, and real-world protection use cases for industrial and automotive electronics designers.
Technical Context
This device operates as a silicon avalanche diode optimized for transient suppression in bidirectional configurations, with symmetrical breakdown characteristics in both polarities. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance, enabling consistent clamping performance under repetitive 10/1000 μs pulses at 0.01% duty cycle.
The P4KE68CAHE3/54 exhibits a 0.104 %/°C temperature coefficient of VBR, confirming predictable voltage drift over temperature, and supports operation from –55 °C to +175 °C junction temperature. Its 66 °C/W junction-to-lead thermal resistance enables effective heat dissipation in PCB-mounted applications without heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 64.6 V / 71.4 V at 1 mA - defines reliable conduction onset threshold for bidirectional surge clamping |
| 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 400 W transient, limiting downstream IC stress |
| PPPM | 400 W - peak pulse power handling per 10/1000 μs waveform, critical for automotive load-dump immunity |
| TJ max. | +175 °C - enables deployment in under-hood automotive environments and high-ambient industrial settings |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
| Package | DO-41 (DO-204AL) - industry-standard axial leaded package with UL 94 V-0 molded epoxy body |
Pinout & Package
DO-41 (DO-204AL) package: axial-leaded, cylindrical epoxy-molded body with matte tin-plated leads; no polarity marking for bidirectional types; meets J-STD-002 solderability and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction | No defined anode/cathode; terminals interchangeable - enables placement without orientation check on PCB |
| Lead 1 / Lead 2 | Current path for transient conduction | Both leads conduct equally during positive or negative surges - eliminates need for directional routing |
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) | Withstands automotive ISO 7637-2 Pulse 1/2a/5a transients without degradation when properly mounted |
| AEC-Q101 qualification | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces |
| Low clamping ratio (VC/VBR ≈ 1.43) | Minimizes overvoltage stress on protected ICs compared to higher-ratio suppressors |
| UL 94 V-0 molding compound | Provides flame-retardant housing required for automotive and industrial safety compliance |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and inductive kickback in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential signal pair or supply rail to limit transient excursions. Use Value: Prevents latch-up or permanent damage to 5 V/3.3 V interface ICs by clamping surges to ≤92 V while maintaining <1 μA leakage at 58.1 V. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers against field-wiring induced transients from solenoid switching or motor contactors. IC Role / Device Role / Timing Role: Parallel-connected TVS on 24 V DC input lines to shunt energy before reaching optocoupler or MCU GPIO. Use Value: Enables robust operation in factory environments where >400 W surges occur repeatedly, with no derating needed below +125 °C ambient. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Shielding Ethernet PHY magnetics or RS-485 transceivers from lightning-induced surges on outdoor cabling in telecom base stations. IC Role / Device Role / Timing Role: First-stage clamping device upstream of GDT or MOV, absorbing fast-rising edge energy before slower components respond. Use Value: Fast response time (<1 ns) and low VC ensure protected ICs see sub-100 V peaks even during 1 kV/μs transients. |
Use Scenario: Secondary-side overvoltage protection on 12 V/19 V DC outputs of wall adapters and laptop chargers exposed to mains switching noise. IC Role / Device Role / Timing Role: Standoff-rated TVS placed after DC-DC converter output filter to suppress ringing and cross-regulation spikes. Use Value: 58.1 V VWM allows safe operation with 19 V nominal rails while clamping 300 V transients to 92 V - preventing downstream capacitor overvoltage failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64CA | Surface-mount SMB package; 64 V VWM; 100 W PPPM; lower clamping voltage (104 V @ 3.2 A) | Designed for space-constrained PCBs; not suitable for through-hole legacy designs or high-power surge scenarios | Select SMBJ64CA only when board layout mandates SMD footprint and peak surge energy is ≤100 W |
| 1.5KE68CA | Same DO-41 package; 68 V VBR; 1500 W PPPM; higher clamping voltage (115 V @ 13.1 A) | Targeted at higher-energy transients (e.g., ISO 16750-2 load dump); larger thermal mass but same mounting | Choose 1.5KE68CA when protecting against ≥1000 W surges; P4KE68CAHE3/54 remains optimal for 400 W standard-compliant protection |
Compared with SMBJ64CA and 1.5KE68CA, the P4KE68CAHE3/54 uniquely balances 400 W surge capability, DO-41 through-hole compatibility, AEC-Q101 qualification, and tight 64.6–71.4 V VBR range - making it the preferred choice for cost-sensitive, medium-energy automotive and industrial protection where reliability and legacy assembly processes matter.
Availability
P4KE68CAHE3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer power adapter secondary-side surge suppression requiring stable component supply across multi-year production cycles.
Supply support for P4KE68CAHE3/54 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 qualification.
The P4KE68CAHE3/54 belongs to Vishay's TRANSZORB® TVS family, engineered specifically for robust, standardized transient suppression in harsh environments - targeting automotive, industrial, and telecom applications demanding AEC-Q101 compliance and repeatable clamping performance.
FAQ
What does the "CA" suffix indicate in P4KE68CAHE3/54?
The "CA" suffix in P4KE68CAHE3/54 denotes a bidirectional configuration, meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., P4KE68A), the P4KE68CAHE3/54 has no polarity marking and functions identically regardless of terminal orientation - a key requirement for AC-coupled or differential signal line protection where voltage polarity is undefined.
Is P4KE68CAHE3/54 qualified for automotive applications?
Yes, P4KE68CAHE3/54 is AEC-Q101 qualified, as confirmed by Vishay's documentation (Document Number 88365, Revision 16-Sep-2021). This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and accelerated life testing - validating its suitability for under-hood and chassis-mounted automotive systems such as engine control units, body control modules, and ADAS sensor interfaces.
What is the clamping voltage of P4KE68CAHE3/54 and why does it matter?
The P4KE68CAHE3/54 has a maximum clamping voltage (VC) of 92.0 V at 4.3 A peak pulse current (IPPM). This value represents the highest voltage imposed on protected circuitry during a 400 W transient event. A lower VC relative to VBR (clamping ratio ~1.43) minimizes stress on downstream ICs - critical for safeguarding 3.3 V or 5 V logic interfaces that cannot tolerate sustained overvoltage beyond their absolute maximum ratings.
How does the DO-41 package of P4KE68CAHE3/54 affect thermal performance?
The DO-41 package of P4KE68CAHE3/54 delivers a typical junction-to-lead thermal resistance (RθJL) of 66 °C/W, enabling efficient heat transfer to PCB copper or external heatsinks. With 1.5 W steady-state power dissipation (PD) and +175 °C max junction temperature, this thermal profile supports reliable operation in high-ambient environments - especially when leads are soldered to ≥10 mm copper traces per Vishay's thermal guidelines.
Can P4KE68CAHE3/54 replace P4KE68A in a design?
No - P4KE68CAHE3/54 is bidirectional while P4KE68A is unidirectional, so direct substitution requires circuit review. The unidirectional P4KE68A has a cathode band and conducts only in reverse bias; replacing it with P4KE68CAHE3/54 introduces symmetrical conduction that may disrupt DC biasing or forward-path functionality. Use P4KE68CAHE3/54 only where bidirectional clamping is explicitly required, such as across AC signal lines or floating power rails.
P4KE68CAHE3/54 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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 58.1V
- Voltage - Breakdown (Min):
- 64.6V
- Voltage - Clamping (Max) @ Ipp:
- 92V
- Current - Peak Pulse (10/1000µs):
- 4.3A
- 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)
P4KE68CAHE3/54 FAQ
1.How can I place an order for P4KE68CAHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE68CAHE3/54 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 P4KE68CAHE3/54 reliable?
The price and inventory of P4KE68CAHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE68CAHE3/54 is usually 5 days.
3.What payment methods are accepted for P4KE68CAHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE68CAHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE68CAHE3/54?
P4KE68CAHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE68CAHE3/54 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 P4KE68CAHE3/54?
For technical support, including P4KE68CAHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE68CAHE3/54 requirements.
6.How does Aetrix verify that P4KE68CAHE3/54 is sourced from the original manufacturer or authorized distributors?
All P4KE68CAHE3/54 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 P4KE68CAHE3/54 meets industry standards.
7.What is the process for return or replacement of P4KE68CAHE3/54?
All P4KE68CAHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE68CAHE3/54, 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 P4KE68CAHE3/54 part is unused and in its original packaging.
Return procedure for P4KE68CAHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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