My Inquiry
My Account
Taiwan Semiconductor Corporation P6KE400H
- Part No.:
- P6KE400H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE400H.pdf
- Description:
- 600W, 400V, UNIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:4,846
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6KE400H from Taiwan Semiconductor is a unidirectional 600W transient voltage suppressor (TVS) diode designed for high-energy surge protection in DC power lines and signal paths. 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 AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the P6KE400H datasheet, P6KE400H pinout, P6KE400H application, or P6KE400H equivalent, key selection criteria include clamping performance under 10/1000 µs surges, low leakage (<1 µA at 324 V), DO-15 package compatibility, and AEC-Q101 compliance for harsh-environment deployments.
Technical Context
The P6KE400H operates as a silicon avalanche diode with fast response time (<1.0 ps from 0 V to VBR), low dynamic impedance, and stable junction temperature up to +175°C. Its unidirectional configuration enables polarity-sensitive protection on positive-rail circuits without reverse conduction.
It delivers 600 W non-repetitive peak pulse power per 10/1000 µs waveform, with thermal derating above 25°C ambient and robust surge handling (100 A IFSM for 8.3 ms half-sine). The device meets UL 94V-0 flammability and JESD201 Class 2 whisker resistance standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 324 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 360 V / 440 V - Breakdown initiates within this range at 1 mA test current |
| VC @ IPP | 574 V @ 1.0 A - Clamped voltage during 10/1000 µs surge, limiting downstream stress |
| PPK | 600 W - Peak surge power dissipation capability under standardized waveform |
| IR @ VWM | <1 µA - Minimal leakage ensures negligible standby power loss and signal integrity |
| TJ max | +175°C - Extended junction temperature rating supports under-hood automotive use |
| Package | DO-204AC (DO-15) - Industry-standard axial leaded package with tin-plated leads |
Pinout & Package
DO-204AC (DO-15) package with axial leads: cathode indicated by band marking; anode and cathode terminals support through-hole mounting on PCBs with 5×5 mm copper pads per lead for rated power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Current entry point during forward conduction | Connected to ground or low-side return path in unidirectional clamp configuration |
| Cathode (banded end) | Current exit point during reverse-biased clamping | Connected to protected line (e.g., 400 V DC rail); conducts only during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics |
| 600 W 10/1000 µs surge rating | Withstands high-energy transients such as load dump and ISO 7637-2 Pulse 5a |
| Clamping voltage ≤574 V at 1.0 A | Ensures protected ICs experience <574 V even under full-rated surge conditions |
| Leakage <1 µA at 324 V | Preserves system efficiency and avoids false triggering in high-impedance sensing nodes |
| DO-15 mechanical compatibility | Enables drop-in replacement in legacy designs using standard axial-leaded TVS footprints |
Applications
| Automotive Power Rail Protection | Industrial DC Power Input |
|---|---|
Use Scenario: Protecting 400 V DC bus in EV onboard chargers against load dump and alternator transients. IC Role / Device Role: Unidirectional TVS placed between HV+ and chassis ground to clamp surges exceeding 324 V. Use Value: Limits transient voltage to ≤574 V, preventing damage to SiC MOSFET gate drivers and isolated DC-DC controllers. | Use Scenario: Safeguarding programmable logic controller (PLC) 24–400 V DC input modules from switching surges. IC Role / Device Role: Primary overvoltage clamp on field-side power entry before EMI filter and DC-DC stage. Use Value: Absorbs 600 W pulses without degradation, maintaining long-term reliability in factory-floor environments. |
| Solar Inverter DC Link Protection | Rail-to-Rail Signal Line Clamp |
Use Scenario: Shielding photovoltaic string inverters' 400 V DC link capacitors from lightning-induced surges. IC Role / Device Role: High-voltage TVS connected across DC+ and DC− rails to suppress common-mode transients. Use Value: Withstands repeated 10/1000 µs surges up to 600 W while maintaining VBR stability over 1000+ cycles. | Use Scenario: Guarding analog sensor inputs referenced to 400 V common-mode potential in motor drives. IC Role / Device Role: Unidirectional clamp from signal line to local ground, referenced to high-side bias rail. Use Value: Sub-1.0 ps response ensures clamping activation before sensitive ADC front-ends are overstressed. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ400A | Same DO-214AC (SMA) package; 400 V VWM, 574 V VC, but rated at 400 W (not 600 W) | Lower surge rating limits use in high-energy automotive/load-dump scenarios | Select when space-constrained layouts require surface-mount packaging and 400 W suffices |
| Vishay 1.5KE400A | Same DO-201AD (DO-27) axial package; identical 400 V VWM and 574 V VC, but rated at 1500 W | Higher PPK enables single-device protection where multiple P6KE400H units would otherwise be paralleled | Select when higher surge margin is required and board layout accommodates larger DO-27 footprint |
Compared with SMAJ400A and 1.5KE400A, the P6KE400H offers balanced 600 W surge capacity in the compact DO-15 package-ideal for cost-sensitive, medium-energy automotive and industrial applications where DO-204AC is already established.
Availability
P6KE400H is available at Aetrix Electronics and suitable for automotive power rail protection, industrial DC input conditioning, and solar inverter DC link safeguarding requiring stable component supply and AEC-Q101 assurance.
Supply support for P6KE400H 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 for automotive, industrial, and consumer markets.
The P6KE series targets high-reliability transient suppression in demanding environments, with AEC-Q101 variants like P6KE400H engineered specifically for under-hood and battery-system applications.
FAQ
What is the maximum clamping voltage of the P6KE400H under standard surge conditions?
The P6KE400H has a maximum clamping voltage (VC) of 574 V when subjected to a 10/1000 µs surge waveform at its rated peak pulse current of 1.0 A. This value is measured per ANSI/IEEE C62.35 and ensures predictable overvoltage limiting for downstream components in systems operating near 400 V DC. The P6KE400H maintains this clamping performance across its full operating temperature range.
Is the P6KE400H suitable for automotive applications?
Yes, the P6KE400H is AEC-Q101 qualified, making it suitable for automotive applications including engine control units, battery management systems, and onboard chargers. Its DO-204AC package, +175°C junction rating, and robust surge immunity meet stringent automotive environmental requirements. The "H" suffix explicitly denotes AEC-Q101 compliance per TSC's ordering nomenclature.
How does the P6KE400H differ from the P6KE400A variant?
The P6KE400H is AEC-Q101 qualified and optimized for automotive use, whereas the P6KE400A is a commercial-grade version with tighter VBR tolerance (380–420 V vs. 360–440 V) but no automotive qualification. Both share identical electrical parameters including VWM = 342 V, VC = 548 V, and PPK = 600 W. The P6KE400H replaces P6KE400A in designs requiring automotive reliability validation.
What is the reverse leakage current specification for the P6KE400H at its standoff voltage?
The P6KE400H exhibits a maximum reverse leakage current (IR) of 1 µA when biased at its rated standoff voltage of 324 V (VWM), measured at 25°C ambient. This ultra-low leakage preserves system efficiency and prevents false triggering in high-impedance monitoring circuits. Leakage remains well below 10 µA even at elevated temperatures up to 125°C.
Can the P6KE400H be used in bidirectional configurations?
No, the P6KE400H is a unidirectional TVS diode and must not be used in bidirectional applications. Its cathode band marking indicates polarity-sensitive operation: it clamps only when the cathode is more positive than the anode. For bidirectional protection at 400 V, TSC offers the P6KE400CA variant (with "CA" suffix), which provides symmetrical clamping in both directions.
P6KE400H 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):
- 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:
- -
- 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)
P6KE400H FAQ
1.How can I place an order for P6KE400H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE400H 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 P6KE400H reliable?
The price and inventory of P6KE400H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE400H is usually 5 days.
3.What payment methods are accepted for P6KE400H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE400H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE400H?
P6KE400H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE400H 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 P6KE400H?
For technical support, including P6KE400H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE400H requirements.
6.How does Aetrix verify that P6KE400H is sourced from the original manufacturer or authorized distributors?
All P6KE400H 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 P6KE400H meets industry standards.
7.What is the process for return or replacement of P6KE400H?
All P6KE400H units undergo pre-shipment inspection (PSI). If there is an issue with P6KE400H, 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 P6KE400H part is unused and in its original packaging.
Return procedure for P6KE400H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE400H Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
