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Vishay General Semiconductor - Diodes Division P4KE68A-E3/54
- Part No.:
- P4KE68A-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE68A-E3/54.pdf
- Description:
- TVS DIODE 58.1VWM 92VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:7,946
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Product details
Overview
P4KE68A-E3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for clamping voltage transients on DC power rails and signal lines. 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 (IPPM), and 400 W peak pulse power rating with 10/1000 μs waveform - used in automotive ECU power input protection and industrial sensor interface surge suppression.
For engineers reviewing the P4KE68A-E3/54 datasheet, P4KE68A-E3/54 pinout, P4KE68A-E3/54 application, or P4KE68A-E3/54 equivalent, this page delivers verified electrical parameters, DO-41 terminal mapping, real-world clamping behavior under surge conditions, and validated alternatives for 68 V-rated TVS replacement in AEC-Q101-compliant designs.
Technical Context
The P4KE68A-E3/54 operates as a unidirectional avalanche diode with glass-passivated junction, enabling fast response (<1 ns) to transient overvoltage events. Its 66 °C/W junction-to-lead thermal resistance supports reliable power dissipation up to 1.5 W at TL = 75 °C, and it meets AEC-Q101 qualification for automotive under-hood applications.
Clamping performance is defined by a 92.0 V maximum VC at IPPM = 4.3 A (10/1000 μs), with 1.0 mA test current (IT) for VBR measurement and 1.0 μA reverse leakage (ID) at VWM = 58.1 V - confirming stable standoff before conduction onset.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min / max | 64.6 V / 71.4 V at IT = 1.0 mA - defines precise avalanche initiation window for predictable clamping threshold |
| VWM | 58.1 V maximum - ensures no conduction during normal 48 V system operation with 20 % margin |
| VC @ IPPM | 92.0 V at 4.3 A (10/1000 μs) - limits downstream IC stress to safe level during ISO 7637-2 Pulse 1/2a/5a events |
| PPPM | 400 W - sustains single 10/1000 μs surges common in automotive load-dump and inductive switching |
| IFSM | 40 A (8.3 ms half-sine) - handles repetitive motor-commutation spikes without degradation |
| TJ max | +175 °C - enables placement near high-temperature components in engine control modules |
| Package | DO-41 (DO-204AL) - industry-standard axial leaded package compatible with automated through-hole assembly |
Pinout & Package
DO-41 (DO-204AL) molded epoxy package with matte tin-plated leads; cathode indicated by color band on body; compliant with J-STD-002 solderability and JESD 201 Class 1A whisker testing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or low-voltage rail; forms return path during transient conduction |
| Cathode | High-side protected node | Connected to line being protected (e.g., 48 V supply input); conducts avalanche current when VIN > VC |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables <1 ns response time and stable VBR tolerance across temperature (-55 °C to +175 °C) |
| 400 W peak pulse power (10/1000 μs) | Withstands ISO 7637-2 Pulse 5a (load dump) without failure in 12 V/48 V systems |
| AEC-Q101 qualified (E3 suffix variant) | Validated for automotive powertrain and chassis applications requiring zero defect reliability |
| UL 94 V-0 molding compound | Prevents flame propagation in enclosed enclosures per automotive safety standards |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ESD or relay bounce) |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Clamping |
|---|---|
Use Scenario: Protecting 48 V battery-fed ECUs against load dump transients per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 48 V rail and chassis ground to clamp surges above 92.0 V. Use Value: Limits voltage seen by downstream DC-DC converters to ≤92.0 V, preventing overvoltage damage during 100 V/400 ms load dump events. |
Use Scenario: Shielding analog outputs of pressure sensors in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Standoff protection on 0–10 V output lines exposed to cable coupling and relay-induced spikes. Use Value: Maintains 58.1 V VWM margin above max signal swing, ensuring no false triggering while clamping 1 kV EFT bursts to <92.0 V. |
| Telecom DC Power Feeds | Consumer Appliance Motor Drive Inputs |
Use Scenario: Safeguarding PoE-powered equipment DC inputs from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary-level TVS on 57 V PoE+ input rail, coordinated with secondary GDT or MOV stages. Use Value: Provides first-response clamping with 4.3 A IPPM, reducing energy passed to downstream filtering by >80 % vs. no TVS. |
Use Scenario: Suppressing inductive kickback from brushed DC motors in smart HVAC blowers. IC Role / Device Role / Timing Role: Mounted across motor terminals to absorb back-EMF during PWM commutation. Use Value: Absorbs 400 W pulses at 100 Hz switching frequency without derating, extending MOSFET lifetime by limiting VDS overshoot. |
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 PPPM; 1000 W peak for 1 ms (not 10/1000 μs) | Lower power handling; suited for PCB space-constrained designs where 400 W is not required | Select SMBJ64A only if surge duty cycle is <0.001 % and board layout favors SMD over axial leads |
| 1.5KE68A | Same DO-41 package; identical VBR/VWM/VC; 1500 W PPPM (10/1000 μs); higher IPPM = 13.5 A | Higher energy absorption; used where multi-pulse or longer-duration transients dominate | Choose 1.5KE68A when protecting against repeated load dumps or generator-switching events exceeding 400 W capability |
Compared with P4KE68A-E3/54, SMBJ64A offers surface-mount compatibility but sacrifices 75 % peak power capacity, while 1.5KE68A retains DO-41 form factor with triple the surge energy rating - making P4KE68A-E3/54 optimal for cost-sensitive, single-event 400 W protection in automotive and industrial DC rails.
Availability
P4KE68A-E3/54 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, telecom DC power feeds, and consumer appliance motor drive circuits requiring stable component supply with AEC-Q101 traceability and RoHS compliance.
Supply support for P4KE68A-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 protection devices with emphasis on reliability, thermal performance, and automotive qualification.
The P4KE68A-E3/54 belongs to Vishay's TRANSZORB® TVS family, engineered specifically for robust transient suppression in harsh environments including automotive, industrial, and telecom infrastructure where repeatable clamping and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of P4KE68A-E3/54 at its rated peak pulse current?
The P4KE68A-E3/54 has a maximum clamping voltage (VC) of 92.0 V at 4.3 A peak pulse current (IPPM) using the standard 10/1000 μs waveform. This value is measured under defined test conditions per JEDEC standards and ensures predictable overvoltage limiting for downstream circuitry. The P4KE68A-E3/54 maintains this clamping performance across its full operating temperature range.
Is P4KE68A-E3/54 suitable for automotive applications?
Yes, the P4KE68A-E3/54 is AEC-Q101 qualified and explicitly rated for automotive use, including engine control units, body electronics, and ADAS power supplies. Its DO-41 package, 175 °C max junction temperature, and 400 W surge rating meet ISO 7637-2 requirements for load dump and inductive switching transients. The E3 suffix confirms RoHS compliance and JESD 201 Class 1A whisker resistance.
How does the P4KE68A-E3/54 differ from bidirectional variants like P4KE68CA?
The P4KE68A-E3/54 is unidirectional, with polarity marked by a cathode band and intended for DC rail protection where reverse voltage is blocked. In contrast, P4KE68CA is bidirectional, symmetric in both directions, and used in AC-coupled or floating signal lines. Their VBR, VWM, and VC values differ: P4KE68CA has 68 V VBR in both directions, while P4KE68A-E3/54 specifies 64.6–71.4 V only in forward-biased avalanche mode.
What is the thermal resistance of P4KE68A-E3/54, and how does it affect power handling?
The P4KE68A-E3/54 has a typical junction-to-lead thermal resistance (RθJL) of 66 °C/W, enabling 1.5 W continuous power dissipation at lead temperature (TL) = 75 °C. This allows effective heat transfer to PCB copper or heatsinks, supporting sustained operation in high-ambient environments. Derating begins above 25 °C ambient per Figure 2 in the datasheet, and the P4KE68A-E3/54 must be mounted with ≥10 mm lead length for specified RθJA.
Can P4KE68A-E3/54 replace P4KE62A or P4KE75A in existing designs?
No direct substitution is recommended without circuit revalidation. P4KE62A has lower VWM (53.0 V) and VC (85.0 V), risking premature conduction on 48 V rails; P4KE75A has higher VWM (64.1 V) and VC (103 V), potentially allowing damaging overvoltage before clamping. The P4KE68A-E3/54's 58.1 V VWM and 92.0 V VC are optimized for 48 V system margins - altering it affects transient response timing and energy absorption balance.
P4KE68A-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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
P4KE68A-E3/54 FAQ
1.How can I place an order for P4KE68A-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE68A-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 P4KE68A-E3/54 reliable?
The price and inventory of P4KE68A-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 P4KE68A-E3/54 is usually 5 days.
3.What payment methods are accepted for P4KE68A-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE68A-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE68A-E3/54?
P4KE68A-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE68A-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 P4KE68A-E3/54?
For technical support, including P4KE68A-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE68A-E3/54 requirements.
6.How does Aetrix verify that P4KE68A-E3/54 is sourced from the original manufacturer or authorized distributors?
All P4KE68A-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 P4KE68A-E3/54 meets industry standards.
7.What is the process for return or replacement of P4KE68A-E3/54?
All P4KE68A-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE68A-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 P4KE68A-E3/54 part is unused and in its original packaging.
Return procedure for P4KE68A-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE68A-E3/54 Tags
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