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Taiwan Semiconductor Corporation P6KE400AH
- Part No.:
- P6KE400AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE400AH.pdf
- Description:
- TVS DIODE 342VWM 548VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,496
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Product details
Overview
P6KE400AH from Taiwan Semiconductor is a unidirectional 600W transient voltage suppressor (TVS) diode designed for high-energy surge protection in DC power rails and signal lines. It features a 400V nominal standoff voltage (VWM = 324 V), 360–440 V breakdown range (VBR), 574 V maximum clamping voltage at 1.0 A peak pulse current, and DO-204AC (DO-15) axial package - used in automotive ECU input protection, industrial sensor interfaces, and AC/DC adapter primary-side surge suppression.
For engineers reviewing the P6KE400AH datasheet, P6KE400AH pinout, P6KE400AH application, or P6KE400AH equivalent, key selection criteria include its AEC-Q101 qualification, 10/1000 µs 600W surge rating, low dynamic impedance, sub-1.0 ps response time, and UL 94V-0 molded case - critical for automotive-grade transient immunity compliance and long-term reliability under repetitive surge stress.
Technical Context
The P6KE400AH operates as a silicon avalanche diode with unidirectional polarity and single-die construction. Its junction exhibits low dynamic impedance (<0.5 Ω typical) and temperature coefficient of VBR = 0.110 %/°C, enabling stable clamping across –55°C to +175°C operating range. The device responds to transients in <1.0 ps from 0 V to VBR, ensuring protection before downstream ICs experience overvoltage stress.
It is rated for non-repetitive 600W peak pulse power per 10/1000 µs waveform, derated linearly above 25°C ambient, and supports 100 A IFSM forward surge (8.3 ms half-sine). Its 324 V standoff voltage allows safe operation on 300–350 VDC bus systems while maintaining margin against normal operating transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 324 V - Maximum continuous reverse voltage before leakage exceeds 1 µA; defines safe operating DC bias limit. |
| VBR (Breakdown Voltage) | 360–440 V @ 1 mA - Avalanche onset range; ensures reliable triggering during surges without premature conduction. |
| VC @ IPPM (Clamping Voltage) | 574 V @ 1.0 A - Peak voltage seen by protected circuit during 10/1000 µs surge; determines maximum stress on downstream components. |
| PPK (Peak Pulse Power) | 600 W - Energy-handling capacity for single 10/1000 µs transient; enables protection against IEC 61000-4-5 Level 4 surges. |
| IR @ VWM | <1 µA - Ultra-low reverse leakage at rated standoff; minimizes standby power loss and avoids false triggering. |
| TJ max | +175 °C - Maximum junction temperature; supports under-hood automotive placement and high-ambient industrial environments. |
| AEC-Q101 Qualified | Yes - Validated for automotive electronics per stress test requirements (HTOL, TC, HAST, etc.), including whisker resistance (JESD201 Class 2). |
Pinout & Package
Package: DO-204AC (DO-15), axial leaded, epoxy-molded case with cathode band marking. Dimensions: 4.2 mm diameter × 7.2 mm length; weight ≈ 0.400 g; leads pure tin plated, solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Current sink during reverse-biased surge | Connected to protected line; conducts surge current to ground when V > VBR. |
| Cathode (banded end) | Reference terminal / ground return path | Must be tied to system ground or lowest-potential reference; defines unidirectional polarity and clamping direction. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive under-hood use with full reliability stress testing (HTOL, TC, HAST, TCT, etc.) and JESD201 Class 2 whisker resistance. |
| 600W 10/1000 µs surge rating | Withstands IEC 61000-4-5 Level 4 (4 kV, 2 Ω source) surges without degradation when properly heatsinked. |
| Sub-1.0 ps response time | Activates faster than most microcontrollers and analog front-ends can respond - prevents latch-up or gate oxide damage. |
| UL 94V-0 flammability rating | Molding compound self-extinguishes within 10 seconds after flame removal - meets safety standards for enclosed power systems. |
| Low dynamic impedance | Typical Zdynamic < 0.5 Ω ensures minimal voltage overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a/5a). |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: 12/24 V battery-fed ECUs exposed to load dump (ISO 16750-2) and alternator ripple. IC Role / Device Role: Primary clamping element on main power rail upstream of DC/DC converters and LDOs. Use Value: Limits transient voltage to ≤574 V during 100 V/400 ms load dump events, preventing MOSFET drain-source breakdown and controller latch-up. |
Use Scenario: 4–20 mA current loop transmitters interfacing with PLC analog inputs in factory automation. IC Role / Device Role: Bidirectional (via companion CA variant) or unidirectional surge limiter on signal terminals. Use Value: Clamps EFT bursts (IEC 61000-4-4) and cable discharge events to <15 V at sensor IC pins, preserving ADC accuracy and isolator integrity. |
| AC/DC Adapter Primary-Side Surge Suppression | Telecom Power Feeding Protection |
|
Use Scenario: Off-line SMPS input stage subjected to lightning-induced surges on AC mains (IEC 61000-4-5). IC Role / Device Role: Secondary-level TVS placed across bulk capacitor or bridge rectifier output. Use Value: Absorbs 600 W surge energy without failure, reducing need for larger MOVs and minimizing thermal stress on primary-side components. |
Use Scenario: PoE-powered devices (IEEE 802.3af/at) receiving DC power over Ethernet cables prone to induced surges. IC Role / Device Role: Unidirectional clamp on PSE-side feed line or PD-side input rail. Use Value: Maintains 324 V standoff while clamping induced transients to 574 V - compatible with 100 V-rated PoE interface ICs and magnetics. |
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 400 V nominal, DO-214AC (SMA) package, 400 W rating (vs. 600 W), higher VC = 644 V @ 0.93 A. | Lower power handling limits use in high-energy surge environments; better suited for space-constrained PCBs. | Select when board area is constrained and surge threat level is ≤IEC 61000-4-5 Level 3. |
| ON Semiconductor 1.5KE400A | Same 400 V rating, DO-201AD package, 1500 W rating, but larger footprint and higher VC = 600 V @ 2.5 A. | Higher surge capacity suits legacy industrial designs; requires larger pad layout and thermal relief. | Choose when legacy 1.5KE footprint compatibility is required and 1500 W headroom justifies added size. |
Compared with SMAJ400A and 1.5KE400A, the P6KE400AH delivers optimal balance of AEC-Q101 qualification, 600 W surge capability in compact DO-15, and 574 V clamping - making it preferred for new automotive and high-reliability industrial designs where qualification, size, and clamping performance are jointly critical.
Availability
P6KE400AH is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, and AC/DC adapter surge suppression requiring stable component supply, AEC-Q101 traceability, and consistent DO-204AC packaging.
Supply support for P6KE400AH 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 Taiwanese semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and thyristors since 1979.
The P6KE series was developed for high-reliability transient suppression in automotive and industrial power systems, emphasizing AEC-Q101 compliance, robust surge endurance, and tight parametric control across temperature.
FAQ
What is the maximum clamping voltage of the P6KE400AH under standard test conditions?
The P6KE400AH has a maximum clamping voltage (VC) of 574 V when subjected to a 10/1000 µs surge current pulse of 1.0 A. This value is measured per ANSI/IEEE C62.35 and represents the peak voltage imposed on the protected circuit during worst-case transient events - a critical parameter for ensuring downstream ICs remain within absolute maximum ratings. The P6KE400AH maintains this clamping performance across its full operating temperature range.
Is the P6KE400AH suitable for bidirectional transient protection?
No, the P6KE400AH is a unidirectional TVS diode, indicated by the "H" suffix and absence of "CA" designation. It protects only against reverse-polarity surges relative to its cathode-marked terminal. For bidirectional protection at 400 V, the P6KE400CAH variant must be used. Using P6KE400AH in bidirectional configurations risks catastrophic failure during positive-going transients.
Does the P6KE400AH meet automotive qualification standards?
Yes, the P6KE400AH is explicitly AEC-Q101 qualified, as confirmed in the ordering information and features list. This qualification covers high-temperature operating life (HTOL), temperature cycling (TC), highly accelerated stress test (HAST), and whisker resistance (JESD201 Class 2), making it approved for under-hood and chassis-mounted automotive applications per ISO/TS 16949 requirements.
What is the standoff voltage (VWM) and why is it important for P6KE400AH selection?
The P6KE400AH has a standoff voltage (VWM) of 324 V - the maximum continuous DC or RMS voltage it can block without exceeding 1 µA leakage. This parameter ensures the device remains non-conductive during normal operation while providing sufficient margin below its 360–440 V breakdown range. Selecting a VWM too close to system operating voltage risks thermal runaway; P6KE400AH's 324 V rating is ideal for 300–350 VDC bus protection.
How does the DO-204AC (DO-15) package of the P6KE400AH affect thermal performance?
The DO-204AC (DO-15) package of the P6KE400AH provides moderate thermal dissipation: its steady-state power dissipation is rated at 5 W at 75°C ambient when mounted on 5 × 5 mm copper pads per lead. While not optimized for continuous power, this package supports high peak pulse energy (600 W) due to low thermal mass and short transient duration. Layout best practices - including minimum 250 mil copper pour per lead - are essential to maintain reliability during repetitive surges.
P6KE400AH 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:
- 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:
- -
- 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)
P6KE400AH FAQ
1.How can I place an order for P6KE400AH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE400AH 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 P6KE400AH reliable?
The price and inventory of P6KE400AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE400AH is usually 5 days.
3.What payment methods are accepted for P6KE400AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE400AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE400AH?
P6KE400AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE400AH 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 P6KE400AH?
For technical support, including P6KE400AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE400AH requirements.
6.How does Aetrix verify that P6KE400AH is sourced from the original manufacturer or authorized distributors?
All P6KE400AH 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 P6KE400AH meets industry standards.
7.What is the process for return or replacement of P6KE400AH?
All P6KE400AH units undergo pre-shipment inspection (PSI). If there is an issue with P6KE400AH, 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 P6KE400AH part is unused and in its original packaging.
Return procedure for P6KE400AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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