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Taiwan Semiconductor Corporation P6KE400A
- Part No.:
- P6KE400A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE400A.pdf
- Description:
- TVS DIODE 342VWM 548VC DO15
- Quantity:
- Payment:
- Shipping:
Inventory:12,841
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Product details
Overview
P6KE400A from Taiwan Semiconductor is a unidirectional 600W transient voltage suppressor (TVS) diode designed for primary-level overvoltage protection in DC power rails and signal lines. It features a 400V nominal standoff voltage (VWM = 342 V), 380–420 V breakdown range at 1 mA, clamps to ≤548 V at 1.1 A peak surge current, and uses DO-204AC (DO-15) axial package - deployed in industrial power supplies and automotive ECU input protection.
For engineers reviewing the P6KE400A datasheet, P6KE400A pinout, P6KE400A application, or P6KE400A equivalent, key selection criteria include its 1.1 A 10/1000 µs surge rating, low 1 µA leakage at 342 V, −55°C to +175°C junction temperature range, and AEC-Q101 qualification status (P6KE400AH variant only).
Technical Context
The P6KE400A operates as a silicon avalanche diode with unidirectional polarity and single-die construction. Its clamping action begins at VBR = 380–420 V (IT = 1 mA), limiting transient energy before downstream components experience damaging voltage excursions.
It delivers 600 W peak pulse power under standardized 10/1000 µs waveform conditions, with thermal derating above 25°C ambient per Fig.2 and fast response time <1.0 ps from 0 V to VBR. Junction capacitance is not specified for this high-voltage variant but is negligible for >100 V devices in surge suppression roles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 342 V - Maximum continuous reverse voltage before significant leakage; defines safe operating DC rail margin. |
| VBR (Breakdown Voltage) | 380–420 V at 1 mA - Avalanche onset range; ensures predictable turn-on during transients without premature conduction. |
| VC @ IPPM (Clamping Voltage) | ≤548 V at 1.1 A - Peak voltage seen by protected circuit during full-rated 10/1000 µs surge; critical for IC survivability. |
| PPK (Peak Pulse Power) | 600 W - Surge energy handling capability per single 10/1000 µs event; determines robustness against lightning or inductive spikes. |
| ID @ VWM (Reverse Leakage) | ≤1 µA - Minimal power loss and noise injection at rated DC voltage; supports low-power system standby integrity. |
| TJ MAX (Junction Temperature) | +175 °C - Enables operation in under-hood automotive or high-ambient industrial environments without thermal shutdown. |
| Package | DO-204AC (DO-15) - Axial-leaded through-hole package with tin-plated leads; compatible with standard wave-solder processes. |
Pinout & Package
DO-204AC (DO-15) axial package with cathode band marking. Leads are pure tin-plated, solderable per J-STD-002, and meet JESD201 Class 2 whisker resistance. Polarity is unidirectional: banded end is cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (non-banded lead) | Low-side reference terminal | Connected to ground or low-potential node; completes avalanche path during reverse transient. |
| Cathode (banded lead) | High-side transient clamp node | Connected to protected line (e.g., 342 V DC rail); conducts surge current to ground when V > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W surge rating (10/1000 µs) | Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity in industrial power inputs without external series impedance. |
| Clamping ratio VC/VBR ≈ 1.39 | Indicates tight voltage control - lower overshoot than typical Zener-based protectors, reducing stress on downstream MOSFETs or controllers. |
| AEC-Q101 qualified variant available (P6KE400AH) | Validated for automotive under-hood applications including engine control modules and body electronics requiring reliability certification. |
| UL Recognized (E326243) & RoHS/Halogen-free | Meets global safety and environmental compliance for end-product certifications including UL 62368-1 and IEC 61249-2-21. |
| −55°C to +175°C operating range | Enables deployment in wide-temperature environments such as solar inverters, railway controls, and oilfield electronics. |
Applications
| Industrial Power Supply Input Protection | Automotive Engine Control Unit (ECU) Power Rail |
|---|---|
Use Scenario: 342 V DC bus in industrial SMPS exposed to load dump and switching transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed across bulk capacitor input to limit surge propagation to PWM controller and gate drivers. Use Value: Clamps 10/1000 µs surges to ≤548 V, preventing latch-up or oxide rupture in 600 V-rated MOSFETs and controllers. |
Use Scenario: 12 V/24 V battery-fed ECU power input subject to ISO 7637-2 pulse 1, 2a, and 5a. IC Role / Device Role / Timing Role: Front-end TVS protecting LDO regulators and microcontroller supply pins from battery reversal and alternator load dump. Use Value: Withstands 600 W pulses while maintaining <1 µA leakage at 342 V, ensuring low quiescent current in always-on vehicle modules. |
| Solar Inverter DC Link Protection | Railway Signaling Interface Protection |
Use Scenario: 400 V DC link in string inverters subjected to lightning-induced surges on PV array wiring. IC Role / Device Role / Timing Role: Parallel-connected TVS across DC bus capacitors to absorb differential-mode transients before they reach IGBT gate drivers. Use Value: 175 °C max junction temperature allows direct mounting near heat-generating power stages without derating. |
Use Scenario: 342 V signaling rail in trackside electronic interlocking systems exposed to EFT/burst noise and induced surges. IC Role / Device Role / Timing Role: Transient suppression on relay driver outputs and sensor return paths to maintain SIL-2 functional safety integrity. Use Value: UL recognition and halogen-free construction support EN 50121-3-2 compliance for rolling stock EMC requirements. |
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 DO-214AC package; slightly higher VC = 574 V at 1.1 A; 1.5x higher junction capacitance (~30 pF vs. unspecified but sub-5 pF for P6KE). | Preferred where board space constraints favor SMD; less suitable for high-frequency signal lines due to higher CJ. | Select SMAJ400A only if surface-mount assembly is required and clamping voltage margin permits. |
| ON Semiconductor 1.5KE400A | Higher PPK = 1500 W; larger DO-201AD package; VBR = 380–420 V same; VC = 574 V at 2.6 A. | Better suited for higher-energy surges (e.g., AC mains input), but requires larger PCB footprint and higher surge current sourcing capability. | Choose 1.5KE400A when system-level surge testing exceeds 600 W or when legacy 1.5KE footprint compatibility is needed. |
Compared with SMAJ400A and 1.5KE400A, the P6KE400A offers optimal balance of axial through-hole reliability, 600 W rating, and compact DO-15 footprint - ideal for cost-sensitive industrial and automotive power entry designs where moderate surge levels apply.
Availability
P6KE400A is available at Aetrix Electronics and suitable for industrial power supplies, automotive ECUs, solar inverter DC links, and railway signaling systems requiring stable component supply and long-term obsolescence management.
Supply support for P6KE400A 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 thyristors - headquartered in Hsinchu, Taiwan.
The P6KE Series targets cost-effective, high-reliability transient protection for industrial, automotive, and renewable energy applications - engineered for robust surge handling and extended temperature operation without premium packaging.
FAQ
What is the maximum clamping voltage of the P6KE400A under standard test conditions?
The P6KE400A has a maximum clamping voltage (VC) of 548 V when subjected to a 10/1000 µs surge current of 1.1 A. This value is measured per ANSI/IEEE C62.35 and represents the peak voltage imposed on the protected circuit during full-rated transient events - critical for ensuring downstream 600 V-rated components remain within safe operating limits.
Is the P6KE400A suitable for automotive applications?
The base P6KE400A is not AEC-Q101 qualified; however, the P6KE400AH variant (same electrical specs, "H" suffix) is fully AEC-Q101 certified for automotive use. Engineers must specify P6KE400AH for under-hood or chassis-mounted applications requiring qualification - the standard P6KE400A remains appropriate for non-automotive industrial systems.
What is the reverse leakage current of the P6KE400A at its rated standoff voltage?
The P6KE400A exhibits a maximum reverse leakage current (ID) of 1 µA when biased at its rated standoff voltage of 342 V (VWM). This ultra-low leakage preserves system efficiency in always-on applications and avoids false triggering in high-impedance sensing circuits connected to the same rail.
Does the P6KE400A have bidirectional capability?
No - the P6KE400A is a unidirectional TVS diode, intended for DC line protection with defined polarity (cathode marked). For bidirectional AC or dual-rail protection, engineers must select the CA-suffixed variant (e.g., P6KE400CA), which provides symmetrical clamping in both directions.
What package type does the P6KE400A use, and what are its mounting considerations?
The P6KE400A uses the DO-204AC (DO-15) axial-leaded package with tin-plated leads compliant with J-STD-002 solderability standards. It requires through-hole mounting with ≥9.5 mm lead length for rated 5 W steady-state dissipation; thermal relief pads and adequate copper area are recommended for surge energy dissipation.
P6KE400A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-15
P6KE400A FAQ
1.How can I place an order for P6KE400A through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE400A 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 P6KE400A reliable?
The price and inventory of P6KE400A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE400A is usually 5 days.
3.What payment methods are accepted for P6KE400A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE400A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE400A?
P6KE400A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE400A 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 P6KE400A?
For technical support, including P6KE400A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE400A requirements.
6.How does Aetrix verify that P6KE400A is sourced from the original manufacturer or authorized distributors?
All P6KE400A 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 P6KE400A meets industry standards.
7.What is the process for return or replacement of P6KE400A?
All P6KE400A units undergo pre-shipment inspection (PSI). If there is an issue with P6KE400A, 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 P6KE400A part is unused and in its original packaging.
Return procedure for P6KE400A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE400A Tags
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