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Vishay General Semiconductor - Diodes Division P6KE400-E3/73
- Part No.:
- P6KE400-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE400-E3/73.pdf
- Description:
- TVS DIODE 324VWM 574VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,039
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Product details
Overview
P6KE400-E3/73 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection in DC power rails and signal lines. It features a 342 V standoff voltage (VWM), 380–420 V breakdown range (VBR at 1 mA), 548 V maximum clamping voltage at 1.1 A peak pulse current, 600 W peak pulse power rating (10/1000 µs), and operates across –55 °C to +175 °C junction temperature. It is used to protect MOSFETs, ICs, and sensor interfaces against inductive switching transients in industrial power supplies.
For engineers reviewing the P6KE400-E3/73 datasheet, P6KE400-E3/73 pinout, P6KE400-E3/73 application, or P6KE400-E3/73 equivalent, key selection criteria include clamping voltage margin relative to protected device VDS/VCC, thermal resistance (RθJL = 20 °C/W), unidirectional polarity marking, DO-204AC package compatibility, and AEC-Q101 qualification status for automotive-adjacent designs.
Technical Context
The P6KE400-E3/73 employs a glass-passivated silicon junction optimized for fast response (<1 ns) to ESD and surge events. Its unidirectional configuration provides reverse-biased clamping only - forward conduction is limited to 3.5/5.0 V at 50 A, with VF = 5.0 V per spec note (3) for VWM ≥ 250 V devices.
It delivers 600 W peak pulse power under standardized 10/1000 µs waveform conditions, derated linearly above 25 °C ambient per Fig. 2, and exhibits 0.110 %/°C temperature coefficient of VBR. Thermal performance is defined by RθJL = 20 °C/W and RθJA = 75 °C/W, supporting lead-mounted PCB layouts without heatsinking for intermittent surge duty.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 342 V - Maximum continuous reverse operating voltage before leakage exceeds 1 µA; sets upper limit for protected line DC bias. |
| VBR (min/max) | 380 V / 420 V at 1 mA - Confirmed breakdown threshold range; ensures reliable turn-on before downstream component damage. |
| VC @ IPPM | 548 V at 1.1 A - Clamped voltage during 10/1000 µs surge; defines worst-case overvoltage seen by protected IC/MOSFET. |
| PPPM | 600 W - Peak transient energy absorption capability; validates suitability for IEC 61000-4-5 Level 3 (1 kV/2 Ω) surges. |
| IFSM | 100 A - Non-repetitive 8.3 ms surge current rating; supports single-event lightning or inductive kick survival. |
| TJ max | +175 °C - Maximum junction temperature; enables operation in high-ambient environments like motor drive enclosures. |
| RθJL | 20 °C/W - Junction-to-lead thermal resistance; informs solder-joint thermal design and pulse repetition limits. |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, epoxy-molded case meeting UL 94 V-0. Matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. Cathode indicated by color band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., GND or return path); conducts during forward surge or bias conditions. |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 342 V rail); initiates avalanche breakdown when transient exceeds VWM. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enables stable, low-leakage avalanche behavior over 1000+ surge cycles without parameter drift. |
| 600 W peak pulse power (10/1000 µs) | Supports robust protection against IEC 61000-4-5 surges up to 1 kV open-circuit / 0.5 kA short-circuit. |
| AEC-Q101 qualified (E3 suffix variant) | Validated for automotive-adjacent applications including industrial control modules and EV charging interfaces. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., relay coil de-energization), improving clamping precision. |
| Solder dip rated 275 °C / 10 s | Ensures reliability through standard wave-solder and reflow processes without junction degradation. |
Applications
| Industrial Power Supply Protection | Automotive Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 300–400 V DC bus in PLC power modules from relay-contact arcing and transformer flyback. IC Role / Device Role / Timing Role: Unidirectional TVS placed between HV rail and chassis ground to clamp negative-going transients below MOSFET VDS rating. Use Value: Limits voltage excursion to ≤548 V during 1.1 A surges, preventing gate oxide rupture in 600 V Si MOSFETs. |
Use Scenario: Safeguarding CAN/LIN transceiver inputs in engine control units exposed to load dump and jump-start events. IC Role / Device Role / Timing Role: Standoff-rated TVS on VCC input line to absorb >100 V transients while maintaining <1 µA leakage at 342 V nominal. Use Value: Enables compliance with ISO 7637-2 Pulse 5a (load dump) by clamping within 1 ns and surviving 100 A surge peaks. |
| Telecom DC Feeder Protection | Renewable Energy Inverter DC Link |
|
Use Scenario: Shielding PoE midspan injectors and remote PHYs from induced lightning surges on 48–57 V DC distribution lines. IC Role / Device Role / Timing Role: Primary-level TVS on input stage, coordinated with secondary MOVs to share energy and extend lifetime. Use Value: Provides 600 W pulse handling without thermal runaway, reducing need for oversized heat sinks in compact telecom chassis. |
Use Scenario: Overvoltage suppression on photovoltaic string inputs (up to 1000 VDC) where partial shading causes rapid voltage spikes. IC Role / Device Role / Timing Role: String-level TVS mounted near combiner box terminals to shunt transient energy before entering MPPT controller. Use Value: Withstands repeated 342 V operating stress and clamps 400 V+ spikes to <550 V, preserving IGBT gate drivers and sensing circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ400A-E3/52 | Same VWM (342 V), lower PPPM (600 W → 600 W), but SMB package (smaller footprint, higher RθJA = 110 °C/W). | Preferred for space-constrained PCBs; less suitable for high-temperature ambient (>85 °C) due to thermal limitations. | Select SMBJ400A-E3/52 when board area is critical and thermal management includes copper pour or forced air. |
| 1.5KE400A | Same VWM/VBR specs, identical DO-204AC package, but commercial-grade (non-AEC-Q101) and no E3 whisker test certification. | Acceptable for non-automotive industrial use; lacks traceability and long-term reliability validation for automotive-tier-1 programs. | Choose 1.5KE400A only for cost-sensitive, non-automotive applications where AEC-Q101 and JESD 201 Class 1A are not required. |
Compared with SMBJ400A-E3/52 and 1.5KE400A, the P6KE400-E3/73 offers verified AEC-Q101 qualification, JESD 201 Class 1A whisker resistance, and DO-204AC mechanical robustness - making it the preferred choice for mission-critical industrial and automotive-adjacent systems requiring long-term surge reliability.
Availability
P6KE400-E3/73 is available at Aetrix Electronics and suitable for industrial power supplies, automotive sensor interfaces, telecom DC feeders, and renewable energy inverters requiring stable component supply with full traceability and long-lifecycle support.
Supply support for P6KE400-E3/73 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, and protection devices with emphasis on reliability, surge robustness, and automotive qualification.
The P6KE series targets cost-effective, high-energy transient suppression in space- and power-constrained applications - particularly DC power rails, motor drives, and sensor interfaces where fast clamping and thermal stability are essential.
FAQ
What is the maximum clamping voltage of the P6KE400-E3/73 under surge conditions?
The P6KE400-E3/73 has a maximum clamping voltage (VC) of 548 V at its rated peak pulse current (IPPM) of 1.1 A, measured using the standardized 10/1000 µs waveform. This value represents the highest voltage the device allows across its terminals during a transient event, directly protecting downstream components such as MOSFETs or ICs from overvoltage damage. The P6KE400-E3/73 maintains this clamping performance across its specified operating temperature range.
Is the P6KE400-E3/73 suitable for automotive applications?
Yes - the P6KE400-E3/73 carries the E3 suffix, indicating RoHS compliance and AEC-Q101 qualification per Vishay documentation. It meets the stress testing requirements for automotive-grade discrete semiconductors, including temperature cycling, humidity, and surge robustness. While not intended for safety-critical airbag or braking systems, the P6KE400-E3/73 is approved for use in engine control modules, body electronics, and charging interfaces where transient immunity and long-term reliability are mandatory.
How does the P6KE400-E3/73 differ from bi-directional TVS diodes like P6KE400CA?
The P6KE400-E3/73 is unidirectional and functions only in reverse-bias clamping mode, with a marked cathode band. In contrast, P6KE400CA is bi-directional and suppresses transients in both polarities - making it suitable for AC lines or differential data signals. The P6KE400-E3/73 offers lower forward voltage (5.0 V at 50 A) and is optimized for DC rail protection, whereas P6KE400CA sacrifices some forward conduction capability for symmetrical clamping. They are not interchangeable without circuit redesign.
What is the thermal resistance of the P6KE400-E3/73, and how does it affect layout?
The P6KE400-E3/73 has a typical junction-to-lead thermal resistance (RθJL) of 20 °C/W and junction-to-ambient (RθJA) of 75 °C/W. This means that for every watt dissipated, the junction rises 20 °C above lead temperature - so adequate copper land area and short, wide traces to thermal pads are essential for repetitive surge handling. Layouts should avoid narrow traces or isolated pads; instead, use ≥25 mm² copper pour connected to both leads to sustain multiple 600 W pulses without exceeding +175 °C junction limit.
Can the P6KE400-E3/73 be used in parallel for higher surge current handling?
No - the P6KE400-E3/73 is not recommended for parallel operation due to inherent VBR tolerance (±5 % across 380–420 V) and mismatched dynamic impedance, which causes current imbalance and potential thermal runaway. For higher surge ratings, select a single higher-power device (e.g., 1500 W SMAJ series) or implement staged protection with upstream fusing and coordinated clamping. Parallel use of P6KE400-E3/73 risks premature failure of one unit and inadequate protection of the system.
P6KE400-E3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 324V
- Voltage - Breakdown (Min):
- 360V
- Voltage - Clamping (Max) @ Ipp:
- 574V
- Current - Peak Pulse (10/1000µs):
- 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)
P6KE400-E3/73 FAQ
1.How can I place an order for P6KE400-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE400-E3/73 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 P6KE400-E3/73 reliable?
The price and inventory of P6KE400-E3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE400-E3/73 is usually 5 days.
3.What payment methods are accepted for P6KE400-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE400-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE400-E3/73?
P6KE400-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE400-E3/73 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 P6KE400-E3/73?
For technical support, including P6KE400-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE400-E3/73 requirements.
6.How does Aetrix verify that P6KE400-E3/73 is sourced from the original manufacturer or authorized distributors?
All P6KE400-E3/73 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 P6KE400-E3/73 meets industry standards.
7.What is the process for return or replacement of P6KE400-E3/73?
All P6KE400-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with P6KE400-E3/73, 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 P6KE400-E3/73 part is unused and in its original packaging.
Return procedure for P6KE400-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE400-E3/73 Tags
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Diodes Incorporated
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Diodes Incorporated
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