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Taiwan Semiconductor Corporation P4KE300A
- Part No.:
- P4KE300A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE300A.pdf
- Description:
- TVS DIODE 256VWM 414VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:2,829
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Product details
Overview
P4KE300A from Taiwan Semiconductor is a unidirectional 400W transient voltage suppressor (TVS) diode designed for overvoltage protection in DC power lines and signal paths. It features a nominal breakdown voltage of 300 V, a working stand-off voltage of 256 V, clamps transients to ≤414 V at 1.0 A peak pulse current, and delivers fast response (<1.0 ps from 0 V to VBR). It is widely used in industrial power supplies and automotive ECU input protection.
For engineers reviewing the P4KE300A datasheet, P4KE300A pinout, P4KE300A application, or P4KE300A equivalent, key selection criteria include its 300 V standoff rating, 414 V clamping voltage at 1.0 A, DO-204AL (DO-41) axial package, AEC-Q101 qualification option (P4KE300AH), and compliance with ANSI/IEEE C62.35 surge waveforms.
Technical Context
The P4KE300A operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its 285–315 V breakdown range (tested at 1 mA). Its low dynamic impedance ensures effective clamping during 10/1000 µs surges up to 400 W, while its <1.0 ps response time enables protection of sensitive downstream ICs against ESD and lightning-induced transients.
It is rated for continuous operation from –55 °C to +175 °C junction temperature, with thermal derating above 25 °C ambient. The device exhibits <1 µA reverse leakage at 256 V and a temperature coefficient of 0.110 %/°C for VBR, supporting stable performance across wide temperature ranges in harsh environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 256 V - Maximum continuous reverse operating voltage before significant leakage begins; defines safe DC line margin. |
| VBR @ IT=1 mA | 285–315 V - Breakdown voltage range at test current; determines precise turn-on threshold for transient suppression. |
| VC @ IPPM=1.0 A | ≤414 V - Clamping voltage under 10/1000 µs surge; limits maximum stress on protected circuitry. |
| PPK | 400 W - Peak pulse power handling per ANSI/IEEE C62.35; supports robust immunity to IEC 61000-4-5 Level 4 surges. |
| IR @ VWM | <1 µA - Reverse leakage at stand-off voltage; ensures minimal power loss and signal integrity in standby. |
| Junction Temp Range | –55 °C to +175 °C - Enables deployment in under-hood automotive, industrial motor drives, and outdoor power systems. |
| Package | DO-204AL (DO-41) - Axial-leaded, UL 94V-0 molded package with tin-plated leads; compatible with through-hole assembly and manual rework. |
Pinout & Package
DO-204AL (DO-41) axial package with cathode band marking. 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 events (IFSM = 40 A). |
| Cathode | Avalanche clamping terminal | Connected to protected line (e.g., 24 V rail); initiates breakdown when reverse voltage exceeds VBR; marked by band. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power | Enables single-device protection against IEC 61000-4-5 4 kV surge (10/1000 µs) on 24–48 V DC rails without parallel staging. |
| <1.0 ps response time | Ensures clamping activation before transient energy couples into downstream logic or analog circuitry. |
| Low dynamic impedance | Minimizes voltage overshoot during high di/dt events, preserving timing margins in microcontroller reset and communication lines. |
| AEC-Q101 qualified variant available | Supports automotive-grade reliability requirements for engine control units, body electronics, and ADAS sensor interfaces. |
| RoHS & halogen-free | Meets IEC 61249-2-21 and environmental compliance mandates for global industrial and consumer product certifications. |
Applications
| Industrial Power Supply Input Protection | Automotive ECU Power Rail Protection |
|---|---|
Use Scenario: 24 V DC input stage of programmable logic controller (PLC) power module exposed to load dump and inductive switching. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed upstream of DC-DC converter input capacitor. Use Value: Limits transient voltage to ≤414 V, preventing damage to 40 V-rated input MOSFETs and enabling compliance with IEC 61000-4-5 Level 4. | Use Scenario: Battery-supplied 12 V rail in engine control unit subjected to ISO 7637-2 Pulse 5a (load dump). IC Role / Device Role / Timing Role: Primary overvoltage clamp on main power input, coordinated with upstream fuse and downstream L-C filter. Use Value: Withstands 400 W surge for 1 ms, clamping peak to 414 V while maintaining <1 µA leakage at nominal 13.5 V system voltage. |
| LED Driver Surge Suppression | Telecom Line Interface Protection |
Use Scenario: Constant-current LED driver board powered from 300 V DC bus in streetlight application, subject to lightning-induced surges. IC Role / Device Role / Timing Role: Standoff-rated TVS on high-side DC link, absorbing energy before it reaches switching FETs and current-sense amplifier. Use Value: 256 V VWM provides 15% margin above 300 V nominal, while 414 V VC protects 600 V-rated MOSFETs without derating. | Use Scenario: Low-voltage auxiliary power feed (e.g., -48 V telecom battery backup) entering remote radio head enclosure. IC Role / Device Role / Timing Role: First-line transient suppressor on DC input, preceding DC-DC isolation stage and monitoring ICs. Use Value: Fast <1.0 ps response prevents latch-up in PMICs; DO-41 package allows easy field replacement during maintenance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ300A | Surface-mount SMB package (vs. axial DO-41); same 300 V nominal, 400 W rating, but lower VC (400 V @ 1.0 A). | Requires PCB redesign for SMT placement; better suited for space-constrained, high-volume automated assembly. | Select SMBJ300A when board real estate is limited and reflow compatibility is required; retain P4KE300A for through-hole prototyping, serviceability, or legacy designs. |
| 1.5KE300A | Same DO-204AL package and 300 V rating, but higher 1500 W peak power (1.5 kW) and larger physical size (DO-201AD). | Overqualified for 400 W surge needs; introduces unnecessary cost and footprint unless >1 kW surge immunity is mandated. | Choose 1.5KE300A only if system-level testing reveals insufficient margin with 400 W rating; otherwise, P4KE300A offers optimal cost-performance balance. |
Compared with SMBJ300A and 1.5KE300A, the P4KE300A delivers identical voltage ratings and proven 400 W surge capability in a service-friendly axial package-making it ideal for industrial power modules, field-replaceable units, and designs requiring manual assembly or repair.
Availability
P4KE300A is available at Aetrix Electronics and suitable for industrial power supply input protection, automotive ECU power rail protection, and LED driver surge suppression requiring stable component supply and long-term lifecycle support.
Supply support for P4KE300A 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 is part of TSC's high-reliability transient suppression portfolio, engineered specifically for ruggedized DC line protection in automotive, industrial automation, and outdoor lighting applications where surge immunity and thermal stability are critical.
FAQ
What is the breakdown voltage range of the P4KE300A?
The P4KE300A has a specified breakdown voltage (VBR) range of 285 V to 315 V at a test current of 1 mA, per the manufacturer's datasheet. This range ensures consistent avalanche initiation across production lots and temperature extremes. The P4KE300A maintains this specification under standard test conditions (TA = 25 °C), and its temperature coefficient of 0.110 %/°C allows predictable VBR drift in elevated ambient environments.
Is the P4KE300A unidirectional or bidirectional?
The P4KE300A is a unidirectional transient voltage suppressor diode, indicated by the absence of "C" or "CA" suffix and confirmed by its cathode-band marking and forward voltage specification (VF = 3.5 V at 25 A). It is intended for DC line protection where polarity is fixed. The P4KE300CA variant would be required for AC or bipolar applications, as stated in the series documentation.
What is the maximum clamping voltage of the P4KE300A under surge conditions?
The P4KE300A clamps to a maximum of 414 V when subjected to a 10/1000 µs surge waveform with a peak pulse current of 1.0 A, as defined in ANSI/IEEE C62.35. This value is measured at the device terminals and represents the upper limit of voltage seen by downstream components during standardized surge events. The P4KE300A achieves this clamping performance while dissipating 400 W peak power.
Does the P4KE300A meet automotive qualification standards?
The base P4KE300A is not AEC-Q101 qualified; however, the P4KE300AH variant-identical in electrical specs but with added qualification-is available per ordering code. The "H" suffix denotes AEC-Q101 compliance, including stress testing for temperature cycling, humidity bias, and mechanical shock. For automotive ECU designs, specify P4KE300AH to ensure full qualification; the P4KE300A remains suitable for industrial applications where AEC-Q101 is not mandated.
What package type does the P4KE300A use, and what are its key mechanical attributes?
The P4KE300A uses the DO-204AL (DO-41) axial package: a molded epoxy case with tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance. It weighs approximately 0.300 g and meets UL 94V-0 flammability rating. The cathode is marked by a visible band, and the device is supplied in tape-and-reel (5,000 pcs) or ammo box (3,000 pcs) packaging options.
P4KE300A 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 256V
- Voltage - Breakdown (Min):
- 285V
- Voltage - Clamping (Max) @ Ipp:
- 414V
- Current - Peak Pulse (10/1000µs):
- 1A
- 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)
P4KE300A FAQ
1.How can I place an order for P4KE300A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE300A 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 P4KE300A reliable?
The price and inventory of P4KE300A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE300A is usually 5 days.
3.What payment methods are accepted for P4KE300A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE300A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE300A?
P4KE300A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE300A 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 P4KE300A?
For technical support, including P4KE300A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE300A requirements.
6.How does Aetrix verify that P4KE300A is sourced from the original manufacturer or authorized distributors?
All P4KE300A 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 P4KE300A meets industry standards.
7.What is the process for return or replacement of P4KE300A?
All P4KE300A units undergo pre-shipment inspection (PSI). If there is an issue with P4KE300A, 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 P4KE300A part is unused and in its original packaging.
Return procedure for P4KE300A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE300A Tags
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