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Vishay General Semiconductor - Diodes Division P6KE6.8A-E3/1
- Part No.:
- P6KE6.8A-E3/1
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE6.8A-E3/1.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,664
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Product details
Overview
P6KE6.8A-E3/1 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection on DC power rails and signal lines. It features a 6.8 V breakdown voltage (VBR), 10.5 V maximum clamping voltage at 57.1 A peak pulse current, 600 W peak pulse power rating (10/1000 µs), and DO-204AC (DO-15) package. It protects MOSFETs, ICs, and sensor interfaces in automotive body electronics and industrial control inputs.
For engineers reviewing the P6KE6.8A-E3/1 datasheet, P6KE6.8A-E3/1 pinout, P6KE6.8A-E3/1 application, or P6KE6.8A-E3/1 equivalent, key selection criteria include clamping voltage margin vs. protected device VDS/VCC, standoff voltage compatibility with operating rail (5.8 V VWM), thermal resistance (RθJL = 20 °C/W), and AEC-Q101 qualification status for automotive use cases.
Technical Context
The P6KE6.8A-E3/1 operates as a silicon avalanche diode with glass-passivated junction, delivering sub-nanosecond response to ESD and lightning-induced transients. Its unidirectional polarity enables integration into DC-biased circuits where reverse conduction must be blocked until clamping threshold is exceeded.
Clamping behavior is defined by two critical points: 6.45–7.14 V breakdown at 10 mA test current and 10.5 V maximum clamped voltage at 57.1 A IPPM (10/1000 µs). Thermal performance is governed by RθJL = 20 °C/W and TJmax = 175 °C, enabling reliable operation under repetitive surge conditions when mounted on adequate copper land.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.45 V / 7.14 V at 10 mA - defines precise avalanche initiation window for predictable turn-on |
| VWM | 5.8 V - maximum continuous reverse working voltage; must exceed circuit's nominal DC rail |
| VC @ IPPM | 10.5 V at 57.1 A - peak clamped voltage seen by protected device during worst-case transient |
| PPPM | 600 W (10/1000 µs) - surge energy handling capacity for industrial and automotive load-dump events |
| IPPM | 57.1 A - peak pulse current capability directly determines minimum series impedance required |
| RθJL | 20 °C/W - junction-to-lead thermal resistance; dictates PCB copper area needed for thermal relief |
| TJmax | 175 °C - maximum junction temperature; supports under-hood automotive environments |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, molded epoxy case with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102. Cathode identified by color band on body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-potential node; completes clamping path during overvoltage event |
| Cathode | High-side transient input terminal | Connected to protected line (e.g., 5 V rail); blocks reverse current until VBR exceeded |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enables stable, repeatable avalanche characteristics and long-term reliability under thermal cycling |
| 600 W peak pulse power (10/1000 µs) | Supports EN 61000-4-5 Level 4 (4 kV) surge immunity without derating in standard layouts |
| AEC-Q101 qualified (E3 suffix variant) | Validated for automotive applications including body control modules and sensor front-ends |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns response), reducing stress on downstream ICs |
| RoHS-compliant, JESD 201 Class 1A whisker tested | Ensures solder joint integrity and process compatibility in lead-free reflow assembly |
Applications
| Automotive Body Control Module | Industrial PLC Input Protection |
|---|---|
|
Use Scenario: Protecting microcontroller GPIOs and LIN bus transceivers from load dump and inductive switching spikes in door module ECUs. IC Role / Device Role / Timing Role: Primary clamping element placed between 5 V supply rail and ground, activated within <1 ns of overvoltage onset. Use Value: Limits transient voltage to ≤10.5 V, preventing latch-up or gate oxide damage in 5 V tolerant MCUs and transceivers. |
Use Scenario: Safeguarding 24 V digital input channels on programmable logic controllers exposed to relay coil flyback and field wiring surges. IC Role / Device Role / Timing Role: Standoff-rated TVS (VWM = 5.8 V) used in conjunction with series resistor and optocoupler to absorb >600 W pulses. Use Value: Clamps 1 kV/500 A surge to <11 V, preserving optocoupler CTR and MCU input stage integrity across 100,000+ cycles. |
| Consumer Power Adapter Output | Automotive Sensor Signal Line |
|
Use Scenario: Secondary-side overvoltage suppression on 5 V USB charging port outputs subjected to capacitor discharge events and ESD. IC Role / Device Role / Timing Role: Unidirectional shunt protector placed after DC-DC converter output filter, referenced to common ground. Use Value: Maintains VWM margin above 5 V nominal while clamping ESD ±8 kV contact discharge to <10.5 V, meeting IEC 61000-4-2 Level 4. |
Use Scenario: Protecting analog outputs of pressure/temperature sensors connected to engine control units via long harnesses. IC Role / Device Role / Timing Role: Low-capacitance TVS (CJ < 100 pF typical) installed at connector interface to suppress ISO 7637-2 Pulse 1/2a transients. Use Value: Provides 6.8 V breakdown alignment with sensor supply range and 10.5 V clamping to avoid ADC saturation or op-amp rail-to-rail clipping. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.8A | Same VBR (6.45–7.14 V) and VC (10.5 V), but SMC package (higher IPPM = 64.9 A, lower RθJA) | Better thermal performance in high-density layouts; requires footprint change from DO-15 to SMC | Select SMBJ6.8A when board space allows larger package and higher surge margin is required. |
| 1.5KE6.8A | Same DO-204AC package and VBR, but 1.5 kW PPPM rating and higher VC (12.6 V at 118 A) | Higher clamping voltage reduces protection margin for 5 V systems; suited for 12 V+ rails | Choose 1.5KE6.8A only if system VCC ≥ 7 V and higher single-event energy absorption is mandatory. |
Compared with SMBJ6.8A and 1.5KE6.8A, the P6KE6.8A-E3/1 delivers optimal balance of compact DO-15 form factor, precise 5.8 V standoff, and 10.5 V clamping-making it ideal for cost-sensitive 5 V rail protection where layout space and thermal mass are constrained.
Availability
P6KE6.8A-E3/1 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input stages, consumer power adapter outputs, and sensor signal conditioning requiring stable component supply and RoHS-compliant sourcing.
Supply support for P6KE6.8A-E3/1 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, and protection devices with emphasis on reliability, AEC-Q101 qualification, and high-volume manufacturability.
The P6KE series was engineered for cost-effective, high-surge-capability transient suppression in commercial and automotive applications where DO-15 footprint and 600 W pulse handling are essential design constraints.
FAQ
What is the standoff voltage rating of the P6KE6.8A-E3/1?
The P6KE6.8A-E3/1 has a maximum reverse standoff voltage (VWM) of 5.8 V. This value ensures reliable blocking of normal operating voltages up to 5.8 V while allowing avalanche conduction only when transients exceed the 6.45–7.14 V breakdown range. It is critical that the protected circuit's nominal voltage remains below this threshold to prevent leakage or premature conduction. The P6KE6.8A-E3/1 is therefore optimized for 5 V systems with margin.
Is the P6KE6.8A-E3/1 suitable for automotive applications?
Yes-the P6KE6.8A-E3/1 variant with E3 suffix is AEC-Q101 qualified per the Vishay datasheet (Document Number: 88369, Revision: 18-Sep-12). This qualification confirms its suitability for automotive environments including under-hood and body control modules, with validated performance across -55 °C to +175 °C junction temperature range and robustness against mechanical shock, vibration, and thermal cycling. The P6KE6.8A-E3/1 meets requirements for ISO 7637-2 and ISO 16750-2 transient immunity testing.
What is the clamping voltage of the P6KE6.8A-E3/1 at its rated peak pulse current?
The P6KE6.8A-E3/1 clamps to a maximum of 10.5 V at its rated peak pulse current (IPPM) of 57.1 A, measured using the standardized 10/1000 µs double-exponential waveform. This clamping voltage represents the highest voltage imposed on the protected circuit during worst-case surge events and must be compared directly against the absolute maximum ratings of downstream components-for example, ensuring it remains below the 6.5 V absolute max of many 5 V logic ICs. The P6KE6.8A-E3/1 achieves this with low dynamic impedance and sub-nanosecond response.
How does the P6KE6.8A-E3/1 differ from bi-directional TVS diodes like P6KE6.8CA?
The P6KE6.8A-E3/1 is unidirectional and blocks reverse current until breakdown, making it appropriate for DC-biased lines such as 5 V power rails. In contrast, P6KE6.8CA is bi-directional with symmetrical clamping in both polarities, intended for AC signal lines or floating buses. The P6KE6.8A-E3/1 exhibits forward voltage drop (~3.5 V at 50 A) and cathode marking, whereas P6KE6.8CA has no polarity marking and identical VBR in both directions. Using P6KE6.8A-E3/1 on AC paths risks forward conduction and failure.
What thermal considerations apply when mounting the P6KE6.8A-E3/1?
The P6KE6.8A-E3/1 has a junction-to-lead thermal resistance (RθJL) of 20 °C/W and junction-to-ambient (RθJA) of 75 °C/W. For sustained surge duty, PCB copper land connected to both leads acts as a heatsink; minimum recommended pad area is 40 mm² per lead. Derating begins above 25 °C ambient, with full power (5.0 W) only sustainable at TL ≤ 75 °C. The P6KE6.8A-E3/1 must be placed away from heat sources and with adequate airflow or copper thermal vias in high-reliability designs.
P6KE6.8A-E3/1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5.8V
- Voltage - Breakdown (Min):
- 6.45V
- Voltage - Clamping (Max) @ Ipp:
- 10.5V
- Current - Peak Pulse (10/1000µs):
- 57.1A
- Power - Peak Pulse:
- 600W
- 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-204AC (DO-15)
P6KE6.8A-E3/1 FAQ
1.How can I place an order for P6KE6.8A-E3/1 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE6.8A-E3/1 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 P6KE6.8A-E3/1 reliable?
The price and inventory of P6KE6.8A-E3/1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE6.8A-E3/1 is usually 5 days.
3.What payment methods are accepted for P6KE6.8A-E3/1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE6.8A-E3/1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE6.8A-E3/1?
P6KE6.8A-E3/1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE6.8A-E3/1 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 P6KE6.8A-E3/1?
For technical support, including P6KE6.8A-E3/1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE6.8A-E3/1 requirements.
6.How does Aetrix verify that P6KE6.8A-E3/1 is sourced from the original manufacturer or authorized distributors?
All P6KE6.8A-E3/1 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 P6KE6.8A-E3/1 meets industry standards.
7.What is the process for return or replacement of P6KE6.8A-E3/1?
All P6KE6.8A-E3/1 units undergo pre-shipment inspection (PSI). If there is an issue with P6KE6.8A-E3/1, 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 P6KE6.8A-E3/1 part is unused and in its original packaging.
Return procedure for P6KE6.8A-E3/1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE6.8A-E3/1 Tags
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