My Inquiry
My Account
Taiwan Semiconductor Corporation P6KE400
- Part No.:
- P6KE400
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE400.pdf
- Description:
- 600W, 400V, UNIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:7,250
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6KE400 from Taiwan Semiconductor is a unidirectional 600W transient voltage suppressor (TVS) diode designed for primary-side overvoltage protection in DC power rails and interface lines. It features a 400V nominal standoff voltage (VWM = 324V), 360–440V breakdown range (VBR), 574V maximum clamping voltage at 1A peak surge current, and DO-204AC (DO-15) axial package - deployed in industrial power supplies and automotive ECU input protection.
For engineers reviewing the P6KE400 datasheet, P6KE400 pinout, P6KE400 application, or P6KE400 equivalent, key selection criteria include clamping performance under 10/1000μs surge, junction temperature derating above 25°C, unidirectional polarity marking, and AEC-Q101 qualification status for automotive-grade reliability validation.
Technical Context
The P6KE400 operates as a silicon avalanche diode with fast response (<1.0 ps from 0 V to VBR), low dynamic impedance, and thermal stability up to TJ = +175°C. Its unidirectional configuration enables asymmetric clamping - conducting only during reverse overvoltage events while blocking forward conduction beyond rated IFSM = 100A (8.3 ms half-sine).
It complies with ANSI/IEEE C62.35 surge standards and delivers 600W non-repetitive peak pulse power at TA = 25°C, derated linearly above that ambient per Fig.2. The device exhibits <1 μA reverse leakage at 324V and a VBR temperature coefficient of 0.110 %/°C - critical for high-temperature system margining.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 324 V - Maximum continuous reverse voltage before significant leakage; defines safe operating DC rail margin |
| VBR (Breakdown Voltage) | 360–440 V at IT = 1 mA - Avalanche onset range; ensures predictable turn-on during transients |
| VC @ IPPM (Clamping Voltage) | 574 V at IPP = 1.0 A (10/1000μs) - Peak voltage seen by protected circuit; determines downstream component stress |
| PPK (Peak Pulse Power) | 600 W - Surge energy handling capacity; validates robustness against IEC 61000-4-5 Level 4 surges |
| TJ max | +175 °C - Maximum junction temperature; supports operation in engine bay or enclosed power enclosures |
| Package | DO-204AC (DO-15) - Axial-leaded through-hole package; compatible with legacy PCB assembly and manual rework |
| Polarity Marking | Cathode band - Identifies cathode end; essential for correct orientation in unidirectional protection circuits |
Pinout & Package
DO-204AC (DO-15) axial package with two leads: anode and cathode. Cathode identified by a painted band. Leads are pure tin-plated, solderable per J-STD-002, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path); conducts during forward surge only in uni-directional mode |
| Cathode | Reverse clamping terminal | Connected to protected line (e.g., 380V DC bus); avalanches into conduction when reverse voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Avalanche response time | <1.0 ps - Enables clamping before sensitive ICs experience overvoltage damage during ESD or lightning-induced transients |
| Low dynamic impedance | Ensures minimal voltage overshoot during high-di/dt surges; maintains VC tightly around 574 V even at full IPP |
| UL 94V-0 molding compound | Flame-retardant encapsulation - meets safety requirements for industrial and transportation equipment enclosures |
| AEC-Q101 qualified option (P6KE400H) | Validated for automotive underhood applications including engine control modules and battery management inputs |
| RoHS & halogen-free | Complies with IEC 61249-2-21 - supports green manufacturing and end-of-life recycling mandates |
Applications
| Industrial Power Supply Input Protection | Automotive Body Control Module (BCM) CAN Bus Protection |
|---|---|
Use Scenario: 400V DC input stage of DIN-rail mounted AC/DC converter exposed to load dump and inductive switching noise. IC Role / Device Role / Timing Role: Primary overvoltage clamp on bulk capacitor input; absorbs 600W surges without failure. Use Value: Limits voltage excursion to ≤574V, preventing MOSFET gate oxide rupture and electrolytic capacitor overvoltage degradation. |
Use Scenario: 12V supply rail feeding BCM microcontroller and CAN transceiver in passenger vehicle door module. IC Role / Device Role / Timing Role: Unidirectional TVS on VCC line upstream of LDO regulator; activated during ISO 7637-2 pulse 5a load dump events. Use Value: Clamps 120V/100ms load dump to <574V within <1ps, preserving regulator input rating and avoiding brownout resets. |
| Solar Inverter DC Link Surge Suppression | Telecom Remote Radio Unit (RRU) Power Interface |
Use Scenario: 600–800V DC link between PV array and inverter H-bridge, subject to lightning-induced common-mode surges. IC Role / Device Role / Timing Role: String-level clamping device placed across DC+ and DC− terminals; coordinated with MOV stack for staged protection. Use Value: Provides precise 574V clamping threshold with low leakage (<1 μA), minimizing standby power loss versus Zener-based alternatives. |
Use Scenario: -48V DC power feed to outdoor RRU unit mounted on cell tower, exposed to induced surges from nearby lightning strikes. IC Role / Device Role / Timing Role: Secondary protection after gas discharge tube (GDT); handles residual fast-rising transients missed by GDT's slower response. Use Value: Sub-nanosecond response ensures clamping before GDT arc-over completes, reducing let-through energy to <10 mJ. |
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 (SMA) package; 400V VWM, 574V VC @ 1A; 400W PPK (lower than P6KE400's 600W) | Surface-mount only; requires PCB redesign; better for high-density layouts but lacks through-hole mechanical robustness | Select when board space is constrained and automated SMT assembly is available |
| ON Semiconductor 1.5KE400A | DO-201AD package; identical 400V VWM, 574V VC @ 1A; 1500W PPK (higher surge rating); larger footprint and higher IFSM (200A) | Higher surge capability suits heavy industrial motor drives; not AEC-Q101 qualified in standard grade | Select for non-automotive 1500W surge environments where thermal mass and ruggedness outweigh size constraints |
Compared with SMAJ400A and 1.5KE400A, the P6KE400 offers optimal balance of 600W surge rating, DO-15 through-hole compatibility, and AEC-Q101 availability in H-grade - making it preferred for automotive and field-serviceable industrial systems requiring mechanical reliability and qualification traceability.
Availability
P6KE400 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, solar inverter DC links, and telecom remote radio units requiring stable component supply with long-term lifecycle support.
Supply support for P6KE400 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in power management, protection, and signal conditioning devices since 1979.
The P6KE series belongs to TSC's high-reliability TVS portfolio engineered for industrial-grade surge immunity and automotive AEC-Q101 compliance - targeting applications where clamping precision, thermal stability, and long-term parametric consistency are mission-critical.
FAQ
What is the maximum clamping voltage of the P6KE400 under standard test conditions?
The P6KE400 has a maximum clamping voltage (VC) of 574 V when subjected to a 10/1000 μs surge waveform at a peak current (IPPM) of 1.0 A. This value is measured per ANSI/IEEE C62.35 and represents the highest voltage the protected circuit will experience during a defined transient event. The P6KE400 maintains this clamping performance across its specified junction temperature range.
Is the P6KE400 unidirectional or bidirectional, and how is polarity indicated?
The P6KE400 is a unidirectional TVS diode, meaning it clamps only during reverse-biased overvoltage events and blocks forward current up to its rated IFSM. Polarity is indicated by a cathode band marked on the DO-204AC (DO-15) package body - the banded end connects to the protected line (e.g., DC+), while the unbanded lead connects to ground or return.
Does the P6KE400 meet automotive qualification standards?
The base P6KE400 is not AEC-Q101 qualified; however, the variant P6KE400H - explicitly designated in TSC's ordering code - is AEC-Q101 qualified for automotive underhood applications. This qualification includes stress testing for temperature cycling, humidity bias, and mechanical shock, ensuring reliability in engine control units and battery management systems.
What is the junction temperature limit and thermal derating behavior of the P6KE400?
The P6KE400 has a maximum junction temperature (TJ) of +175°C and must be derated above TA = 25°C per the pulse derating curve in Fig.2 of the datasheet. At 75°C ambient, its peak pulse power drops to ~400W; at 125°C, it falls to ~200W. Proper PCB copper pad area (5 × 5 mm per lead) is required to achieve rated thermal performance.
How does the P6KE400 compare to the P6KE400A variant?
The P6KE400A has a tighter breakdown voltage range (380–420 V vs. 360–440 V for P6KE400), lower leakage (<1 μA at 342 V vs. 324 V), and identical clamping voltage (548 V vs. 574 V). The P6KE400A is preferred where tighter VBR tolerance and lower leakage are critical - such as in high-impedance sensing circuits - while the P6KE400 offers broader tolerance for general-purpose surge suppression.
P6KE400 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:
- 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 FAQ
1.How can I place an order for P6KE400 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE400 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 reliable?
The price and inventory of P6KE400 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE400 is usually 5 days.
3.What payment methods are accepted for P6KE400?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE400 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE400?
P6KE400 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE400 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?
For technical support, including P6KE400 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE400 requirements.
6.How does Aetrix verify that P6KE400 is sourced from the original manufacturer or authorized distributors?
All P6KE400 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 meets industry standards.
7.What is the process for return or replacement of P6KE400?
All P6KE400 units undergo pre-shipment inspection (PSI). If there is an issue with P6KE400, 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 part is unused and in its original packaging.
Return procedure for P6KE400:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE400 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…
