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Taiwan Semiconductor Corporation P6KE400CAH
- Part No.:
- P6KE400CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE400CAH.pdf
- Description:
- TVS DIODE 342VWM 548VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,967
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Product details
Overview
P6KE400CAH from Taiwan Semiconductor is a bidirectional transient voltage suppressor (TVS) diode designed for high-energy surge protection in automotive and industrial power rails. It features a 400V standoff voltage (VWM = 324V), 440V maximum breakdown voltage (VBR), 600W peak pulse power rating at 10/1000μs, clamping voltage of 574V at 1A peak surge current, and AEC-Q101 qualification for under-hood applications.
For engineers reviewing the P6KE400CAH datasheet, P6KE400CAH pinout, P6KE400CAH application, or P6KE400CAH equivalent, this device is selected for high-voltage DC bus protection where fast clamping (<5ns response), low leakage (<1μA at 324V), and robust 175°C junction temperature capability are required in harsh environments.
Technical Context
The P6KE400CAH operates as a bidirectional avalanche diode with symmetrical clamping behavior in both polarities, enabling protection against EFT, lightning-induced surges, and inductive switching transients on AC or floating DC lines. Its DO-204AC (DO-15) package supports through-hole mounting with pure tin-plated leads compliant to J-STD-002 solderability standards.
It delivers 600W non-repetitive surge capability per 10/1000μs waveform, derates linearly above 25°C ambient, and maintains stable VBR with a temperature coefficient of 0.110%/°C - critical for thermal stability in engine control units and industrial motor drives.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 324 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC bus operating margin |
| VBR (min/max) | 360 V / 440 V - Breakdown initiates within this range at 1 mA test current; ensures predictable turn-on threshold |
| VC @ IPP | 574 V at 1.0 A - Clamped voltage during 10/1000μs surge; determines protected circuit's maximum transient exposure |
| PPK | 600 W - Peak pulse power handling at 10/1000μs; enables single-event surge suppression without failure |
| IR @ VWM | <1 μA - Reverse leakage at rated standoff voltage; minimizes standby power loss in high-impedance sensing circuits |
| TJ max | +175 °C - Maximum junction temperature; supports operation in under-hood automotive environments |
| Package | DO-204AC (DO-15) - Standard axial-leaded package with UL 94V-0 molding compound and JESD201 Class 2 whisker resistance |
Pinout & Package
DO-204AC (DO-15) axial-leaded package with cathode band marking for unidirectional variants; P6KE400CAH is bidirectional and marked with part-specific code (no polarity band). Leads are pure tin-plated, solderable per J-STD-002, and mounted on 5×5 mm copper pads for thermal derating compliance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction | No functional polarity - either lead serves as input/output terminal for AC or floating DC protection |
| Lead 1 / Lead 2 | Current path terminals | Direct connection to protected line and ground; requires minimum 9.5 mm lead length for full 5W steady-state dissipation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock per AEC standard |
| 600W 10/1000μs surge rating | Withstands single high-energy transients common in 24V/48V vehicle power systems without degradation |
| <5 ns response time (bidirectional) | Clamps faster than most microcontroller I/O or analog front-end damage thresholds, preserving signal integrity |
| UL Recognized (E326243) | Meets safety requirements for end-equipment certification in industrial and transportation applications |
| Halogen-free & RoHS compliant | Complies with IEC 61249-2-21 and EU RoHS Directive for environmentally restricted materials |
Applications
| Automotive Power Distribution | Industrial Motor Drive Inputs |
|---|---|
Use Scenario: Protection of 48V battery management system (BMS) input stages against load dump and jump-start transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed directly across DC input terminals upstream of DC-DC converters and monitoring ICs. Use Value: Limits transient voltage to ≤574V, preventing damage to 600V-rated MOSFETs and isolated gate drivers while maintaining AEC-Q101 compliance. | Use Scenario: Surge suppression on three-phase rectifier outputs feeding variable frequency drives (VFDs). IC Role / Device Role / Timing Role: Bidirectional TVS connected between DC+ and DC− rails to absorb commutation spikes and regenerative energy surges. Use Value: Absorbs up to 600W of inductive kickback energy without latch-up, enabling reliable operation in 30–100 kW industrial drives. |
| Telecom Power Feeds | Renewable Energy Inverter DC Links |
Use Scenario: Input protection for PoE++ (IEEE 802.3bt) powered devices receiving up to 90W over Category 6A cabling. IC Role / Device Role / Timing Role: Front-end TVS on DC input rail to suppress induced surges from nearby lightning strikes or cable coupling. Use Value: Clamps 10/1000μs surges to 574V while drawing <1μA leakage, preserving efficiency in always-on network equipment. | Use Scenario: DC link protection in solar string inverters exposed to rapid voltage transients during grid fault clearing. IC Role / Device Role / Timing Role: Parallel-mounted TVS across 600–1000V DC bus capacitors to limit overvoltage during anti-islanding events. Use Value: Withstands repeated 400V–440V breakdown with 0.110%/°C VBR drift, ensuring stable clamping across −40°C to +125°C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ400A | Same 400V VWM, but 400W PPK rating (vs. 600W); DO-214AC (SMA) surface-mount package | Lower surge capacity; suited for space-constrained PCBs where 400W suffices and reflow assembly is preferred | Select when board area is limited and peak surge energy does not exceed 400W; verify thermal pad layout for SMA package |
| ON Semiconductor 1.5KE400CA | Same 400V VWM and 600W rating, but larger DO-201AD (Axial) package; higher thermal mass but longer lead inductance | Compatible for through-hole retrofits but less optimal for high-frequency transient suppression due to parasitic inductance | Choose for legacy designs requiring identical electrical specs with relaxed layout constraints and higher thermal inertia |
Compared with P6KE400CAH, SMAJ400A offers smaller footprint but reduced surge margin, while 1.5KE400CA matches power rating but trades off higher parasitic inductance for greater thermal robustness - making P6KE400CAH optimal for AEC-Q101-compliant, high-surge, medium-frequency protection.
Availability
P6KE400CAH is available at Aetrix Electronics and suitable for automotive power distribution, industrial motor drive inputs, telecom power feeds, and renewable energy inverter DC links requiring stable component supply with AEC-Q101 assurance and long-term lifecycle support.
Supply support for P6KE400CAH 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs, with global manufacturing and testing facilities.
The P6KE series targets high-reliability transient suppression in automotive and industrial environments, emphasizing AEC-Q101 qualification, robust surge handling, and consistent parametric stability across temperature and lifetime.
FAQ
What is the clamping voltage of P6KE400CAH at its rated peak surge current?
The P6KE400CAH has a maximum clamping voltage (VC) of 574 V when subjected to a 1.0 A peak pulse current with a 10/1000μs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during a standardized surge event. The P6KE400CAH maintains this clamping performance across its specified operating temperature range.
Is P6KE400CAH suitable for automotive applications?
Yes, P6KE400CAH is AEC-Q101 qualified, making it suitable for automotive applications including engine control units, battery management systems, and ADAS power supplies. Its DO-204AC package, 175°C maximum junction temperature, and validated reliability testing (temperature cycling, humidity bias, mechanical shock) meet stringent automotive environmental requirements. The P6KE400CAH is explicitly designated for automotive use in TSC's ordering documentation via the "H" suffix.
How does the bidirectional configuration of P6KE400CAH affect its circuit implementation?
The bidirectional configuration of P6KE400CAH means it provides symmetrical clamping in both polarities, eliminating the need for polarity-aware placement - either lead connects to the protected line and the other to ground or reference. This simplifies layout for AC-coupled or floating DC systems like telecom power feeds or inverter DC links. Unlike unidirectional TVS diodes, the P6KE400CAH has no cathode band marking and functions identically regardless of orientation.
What is the maximum steady-state power dissipation for P6KE400CAH at 75°C ambient?
The P6KE400CAH has a steady-state power dissipation (PD) rating of 5 W at TA = 75°C with 9.5 mm lead lengths mounted on 5 × 5 mm copper pads per terminal. This rating assumes proper PCB thermal design and is derated linearly above 75°C per the pulse derating curve in the datasheet. The P6KE400CAH is intended for transient suppression, not continuous power dissipation; sustained DC stress above VWM must be avoided.
Does P6KE400CAH have halogen-free and RoHS compliance documentation?
Yes, P6KE400CAH is certified halogen-free per IEC 61249-2-21 and RoHS compliant per EU Directive 2011/65/EU. These compliance attributes are explicitly stated in the product summary and mechanical data section of the official Taiwan Semiconductor datasheet (Version P2203). The P6KE400CAH uses UL 94V-0 rated molding compound and pure tin-plated leads, supporting environmentally regulated end-equipment certifications.
P6KE400CAH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- P6KE
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 342V
- Voltage - Breakdown (Min):
- 380V
- Voltage - Clamping (Max) @ Ipp:
- 548V
- Current - Peak Pulse (10/1000µs):
- 1.1A
- Power - Peak Pulse:
- 600W
- 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-204AC (DO-15)
P6KE400CAH FAQ
1.How can I place an order for P6KE400CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE400CAH 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 P6KE400CAH reliable?
The price and inventory of P6KE400CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE400CAH is usually 5 days.
3.What payment methods are accepted for P6KE400CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE400CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE400CAH?
P6KE400CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE400CAH 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 P6KE400CAH?
For technical support, including P6KE400CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE400CAH requirements.
6.How does Aetrix verify that P6KE400CAH is sourced from the original manufacturer or authorized distributors?
All P6KE400CAH 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 P6KE400CAH meets industry standards.
7.What is the process for return or replacement of P6KE400CAH?
All P6KE400CAH units undergo pre-shipment inspection (PSI). If there is an issue with P6KE400CAH, 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 P6KE400CAH part is unused and in its original packaging.
Return procedure for P6KE400CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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