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Taiwan Semiconductor Corporation P4KE400CA
- Part No.:
- P4KE400CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE400CA.pdf
- Description:
- TVS DIODE 342VWM 548VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:4,183
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Product details
Overview
P4KE400CA from Taiwan Semiconductor is a bidirectional transient voltage suppressor diode designed for high-energy surge protection in DC power rails and signal lines. It features a 400W peak pulse power rating at 10/1000μs, 324V working stand-off voltage (VWM), 360–440V breakdown voltage (VBR), and clamps to ≤574V at 0.73A peak pulse current - deployed in automotive lighting control modules, industrial PLC I/O protection, and telecom line interface circuits.
For engineers reviewing the P4KE400CA datasheet, P4KE400CA pinout, P4KE400CA application, or P4KE400CA equivalent, key selection criteria include bidirectional clamping capability, DO-41 package compatibility, AEC-Q101 qualification status, low leakage (<1μA @ 324V), and thermal stability up to +175°C junction temperature.
Technical Context
The P4KE400CA operates as a silicon avalanche diode with symmetrical bidirectional breakdown behavior, enabling protection against both positive and negative transients without polarity sensitivity. Its clamping response time is typically 5.0ns, and it maintains stable VBR across temperature with a coefficient of 0.110%/°C.
This device complies with ANSI/IEEE C62.35 for transient suppression and meets UL 94V-0 flammability requirements in its DO-204AL molded package. It is rated for non-repetitive 8.3ms half-sine surge currents up to 40A and supports steady-state power dissipation of 1W at 75°C lead temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 324 V - Maximum continuous reverse operating voltage before significant leakage; defines safe DC rail margin for 380–400V systems. |
| VBR (min/max) | 360 / 440 V - Breakdown occurs within this range at 1mA test current; ensures predictable clamping onset across production lot. |
| VC @ IPPM | 574 V - Clamped voltage at 0.73A peak pulse current (10/1000μs); determines maximum stress on downstream circuitry during surge. |
| PPK | 400 W - Peak pulse power handling per single transient event; validates suitability for IEC 61000-4-5 Level 4 surges. |
| ID @ VWM | <1 μA - Reverse leakage at rated stand-off voltage; minimizes standby power loss and avoids false triggering in high-impedance nodes. |
| TJ max | +175 °C - Maximum junction temperature; enables operation in under-hood automotive or enclosed industrial environments. |
| Package | DO-204AL (DO-41) - Standard axial-leaded through-hole package with tin-plated leads; compatible with legacy wave-solder and hand-solder processes. |
Pinout & Package
DO-204AL (DO-41) package: axial-leaded, molded epoxy case with cathode band marking omitted for bidirectional types; terminals are non-polarized and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional avalanche junction | No polarity designation; either terminal serves as anode or cathode depending on transient polarity - eliminates orientation errors during assembly. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without external polarity management. |
| AEC-Q101 qualified (H-grade option) | Validated for automotive under-hood applications including engine control units and lighting drivers requiring reliability certification. |
| 400W surge rating (10/1000μs) | Meets IEC 61000-4-5 surge immunity requirements for industrial and telecom infrastructure equipment. |
| Low clamping ratio (VC/VBR ≈ 1.59) | Minimizes overvoltage overshoot during fast transients, reducing stress on protected ICs such as microcontrollers and CAN transceivers. |
| UL Recognized (E326243) | Confirms compliance with safety standards for end-product certifications including UL 60950 and UL 62368. |
Applications
| Automotive LED Headlamp Driver Protection | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Protects LED driver ICs and MOSFETs from load-dump and jump-start transients in 24V/42V vehicle electrical systems. IC Role / Device Role / Timing Role: Bidirectional TVS placed across input rails to clamp ±100V–200V spikes within nanoseconds. Use Value: Prevents latch-up or gate oxide damage in high-side switches by limiting voltage to ≤574V during 400W surges. |
Use Scenario: Shields 4–20mA analog input front-ends from EFT bursts and field-wiring induced surges in factory automation cabinets. IC Role / Device Role / Timing Role: Standoff protection element between terminal block and precision op-amp input stage. Use Value: Maintains signal integrity with <1μA leakage at 324V, avoiding offset drift in 24-bit ADC reference paths. |
| Telecom DSL Line Interface Protection | Renewable Energy Inverter DC Link Snubbing |
Use Scenario: Safeguards ADSL/VDSL line drivers and transformers from lightning-induced longitudinal surges on twisted-pair copper lines. IC Role / Device Role / Timing Role: Primary surge arrestor in hybrid coupler interface, coordinated with secondary GDT or MOV stages. Use Value: Fast 5.0ns response ensures clamping before transformer saturation, preserving common-mode rejection. |
Use Scenario: Suppresses switching spikes across DC-link capacitors in solar string inverters operating at 600–1000V bus voltages. IC Role / Device Role / Timing Role: Secondary-level transient limiter parallel to main snubber network on high-voltage DC bus. Use Value: Withstands repeated 324V DC bias while clamping 1kV+ transients to <574V, extending electrolytic capacitor life. |
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; lower PPK (400W same), but VWM = 324V and VC = 574V identical; slightly higher IR (≤5μA). | Surface-mount only; requires PCB rework for through-hole designs using P4KE400CA. | Select when board space is constrained and SMT assembly is available. |
| ON Semiconductor 1.5KE400CA | Same DO-201AE (DO-27) package; identical VWM (324V), VBR (360–440V), VC (574V); rated for 1.5kW peak power but derated to 400W at 10/1000μs per standard test. | Higher surge margin allows extended lifetime under repetitive surge stress; larger package footprint than DO-41. | Select when long-term reliability under frequent transients is prioritized over board area. |
Compared with SMAJ400A and 1.5KE400CA, the P4KE400CA offers optimal balance of axial-leaded manufacturability, AEC-Q101 availability, and precise 400W/10/1000μs compliance - making it preferred for cost-sensitive, high-volume automotive and industrial through-hole assemblies.
Availability
P4KE400CA is available at Aetrix Electronics and suitable for automotive lighting systems, industrial PLC I/O modules, telecom line interfaces, and renewable energy inverter protection requiring stable component supply and long-lifecycle support.
Supply support for P4KE400CA 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 with global distribution and AEC-Q101 qualification capabilities.
The P4KE series targets cost-effective, high-reliability transient protection for automotive, industrial, and telecom applications - emphasizing robust surge handling, tight parameter distribution, and RoHS/halogen-free compliance.
FAQ
What does the 'CA' suffix indicate in P4KE400CA?
The 'CA' suffix in P4KE400CA denotes a bidirectional configuration, meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., P4KE400A), the P4KE400CA has no cathode marking and functions identically regardless of terminal orientation - critical for AC-coupled or floating signal line protection where polarity is undefined.
Is P4KE400CA AEC-Q101 qualified?
The base P4KE400CA is not automatically AEC-Q101 qualified; qualification applies only to variants marked with the 'H' suffix (e.g., P4KE400CAH). Per Taiwan Semiconductor's ordering information, the 'H' denotes AEC-Q101 compliance. Engineers requiring automotive-grade reliability must specify P4KE400CAH - the standard P4KE400CA meets industrial specs but lacks formal automotive qualification documentation.
What is the maximum clamping voltage of P4KE400CA under surge conditions?
The maximum clamping voltage (VC) of P4KE400CA is 574 V at a peak pulse current (IPPM) of 0.73 A with a 10/1000μs waveform. This value is measured per ANSI/IEEE C62.35 and represents the upper limit of voltage imposed on protected circuitry during worst-case transient events - essential for verifying margin against downstream component absolute maximum ratings.
Can P4KE400CA be used in AC line protection applications?
Yes, P4KE400CA is suitable for AC line protection due to its bidirectional structure and 324 V working stand-off voltage, which supports RMS line voltages up to ~230 VAC (324 V > √2 × 230 V ≈ 325 V). However, it must be paired with appropriate upstream current limiting (e.g., fuse or PTC) and coordinated with slower-acting protectors like MOVs for high-energy surges exceeding its 400W rating.
How does P4KE400CA compare to P4KE400A in terms of electrical performance?
P4KE400CA and P4KE400A share identical VWM (324 V), VBR (360–440 V), VC (574 V), and PPK (400 W), but differ fundamentally in polarity: P4KE400A is unidirectional with a cathode band and forward voltage drop (~6.5 V), while P4KE400CA is bidirectional with no polarity marking and symmetrical clamping. Use P4KE400CA for AC or floating nodes; use P4KE400A only where DC polarity is fixed and forward conduction must be blocked.
P4KE400CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-204AL, DO-41, Axial
- Series:
- P4KE
- 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):
- 760mA
- Power - Peak Pulse:
- 400W
- 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-204AL (DO-41)
P4KE400CA FAQ
1.How can I place an order for P4KE400CA through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE400CA 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 P4KE400CA reliable?
The price and inventory of P4KE400CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE400CA is usually 5 days.
3.What payment methods are accepted for P4KE400CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE400CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE400CA?
P4KE400CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE400CA 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 P4KE400CA?
For technical support, including P4KE400CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE400CA requirements.
6.How does Aetrix verify that P4KE400CA is sourced from the original manufacturer or authorized distributors?
All P4KE400CA 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 P4KE400CA meets industry standards.
7.What is the process for return or replacement of P4KE400CA?
All P4KE400CA units undergo pre-shipment inspection (PSI). If there is an issue with P4KE400CA, 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 P4KE400CA part is unused and in its original packaging.
Return procedure for P4KE400CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE400CA Tags
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