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Taiwan Semiconductor Corporation P4KE300CA
- Part No.:
- P4KE300CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE300CA.pdf
- Description:
- TVS DIODE 256VWM 414VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:6,131
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Product details
Overview
P4KE300CA from Taiwan Semiconductor is a bidirectional transient voltage suppressor (TVS) diode designed for high-energy surge protection in DC power rails and signal lines. It features a 300V nominal standoff voltage, 400W peak pulse power rating at 10/1000μs waveform, clamping voltage of 414V at 1.0A peak pulse current, and operates across –55°C to +175°C junction temperature range - deployed in automotive lighting control modules and industrial PLC I/O protection circuits.
For engineers reviewing the P4KE300CA datasheet, P4KE300CA pinout, P4KE300CA application, or P4KE300CA equivalent, key selection criteria include bidirectional clamping capability, DO-41 package compatibility, low leakage (<1μA at 256V), fast response time (≤5ns), and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
The P4KE300CA is a silicon avalanche diode operating in reverse breakdown to clamp transient overvoltages. Its bidirectional symmetry enables protection against both positive and negative polarity surges without polarity-sensitive placement. The device exhibits a typical temperature coefficient of 0.110%/°C for VBR, ensuring predictable voltage drift across temperature.
It complies with ANSI/IEEE C62.35 for transient suppression testing and delivers 400W non-repetitive peak pulse power under standardized 10/1000μs waveform conditions. Steady-state power dissipation is rated at 1W at 75°C lead temperature with specified PCB copper pad mounting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 256 V - Maximum continuous working voltage before clamping begins; defines safe operating DC or RMS AC rail voltage. |
| VBR (min/max) | 285 V / 315 V @ 1 mA - Breakdown voltage range where avalanche conduction initiates reliably; ensures consistent turn-on behavior. |
| VC @ IPPM | 414 V @ 1.00 A - Clamping voltage during full-rated surge; determines maximum voltage seen by protected downstream circuitry. |
| PPK | 400 W - Peak pulse power handling at 10/1000μs waveform; quantifies single-event surge energy absorption capacity. |
| IR @ VWM | <1 μA - Reverse leakage current at working voltage; critical for low-power standby systems and battery-backed circuits. |
| TJ Range | –55°C to +175°C - Extended junction temperature range supports under-hood automotive and industrial environments. |
| AEC-Q101 | Qualified - Validated for automotive electronic systems per stress test requirements including temperature cycling, HTRB, and ESD. |
Pinout & Package
Package: DO-204AL (DO-41) - Axial-leaded, molded plastic case with tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance. Polarity marked by cathode band only for unidirectional variants; P4KE300CA is bidirectional and has no polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Functions as cathode during positive transients and anode during negative transients; symmetric conduction enables polarity-agnostic placement. |
| Cathode | Transient return path (bidirectional) | Functions as anode during positive transients and cathode during negative transients; identical electrical role to Anode terminal in CA-suffix devices. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without external polarity management. |
| 400W 10/1000μs surge rating | Meets IEC 61000-4-5 Level 4 (4kV) surge immunity requirements when properly mounted on PCB with adequate trace width. |
| ≤5 ns response time | Clamps transients before sensitive ICs experience damaging overvoltage - critical for protecting CAN, LIN, and sensor interfaces. |
| AEC-Q101 qualification | Validated for automotive applications including engine control units, body electronics, and ADAS sensor front-ends. |
| UL 94V-0 flammability rating | Molding compound resists ignition and flame propagation during fault conditions, supporting safety-compliant system design. |
Applications
| Automotive Lighting Control | Industrial PLC Digital I/O |
|---|---|
Use Scenario: Protecting LED driver ICs and microcontrollers from load-dump and inductive kickback in headlamp and tail lamp modules. IC Role / Device Role / Timing Role: Bidirectional TVS placed across power input pins to clamp ±12V/24V rail transients up to 400W. Use Value: Prevents latch-up or permanent damage to MCU GPIOs and gate drivers during alternator load dump events. | Use Scenario: Safeguarding digital input/output terminals of programmable logic controllers exposed to field wiring surges. IC Role / Device Role / Timing Role: Mounted directly at connector entry point to shunt fast-rising EFT bursts (IEC 61000-4-4) and lightning-induced surges. Use Value: Maintains functional integrity of optocoupler inputs and relay drivers during factory floor electromagnetic disturbances. |
| DC Power Rail Protection | RS-485 Communication Lines |
Use Scenario: Securing 24V/48V DC distribution networks in telecom power supplies and PoE injectors against switching transients. IC Role / Device Role / Timing Role: Placed across VIN–GND to limit voltage excursions during hot-swap or capacitor charging events. Use Value: Limits peak rail voltage to ≤414V, preventing overstress of downstream DC-DC converters and PMICs. | Use Scenario: Shielding RS-485 transceivers in building automation systems from induced surges on long cable runs. IC Role / Device Role / Timing Role: Connected between differential pair (A/B) and ground to clamp common-mode transients while preserving signal integrity. Use Value: Enables reliable operation under IEC 61000-4-5 surge tests up to 2kV without data corruption or transceiver failure. |
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 SMAJ300CA | Same DO-214AC (SMA) package; 400W rating; VC = 486V @ 0.82A; higher clamping voltage than P4KE300CA's 414V @ 1.00A. | Requires larger PCB footprint due to SMA package; less suitable for axial-leaded legacy designs. | Select when surface-mount layout is preferred and higher clamping voltage is acceptable. |
| ON Semiconductor 1.5KE300CA | Same DO-204AL (DO-41) package; 1500W rating; VC = 486V @ 3.1A; significantly higher power but looser voltage tolerance. | Overqualified for 400W-level threats; may exhibit slower response due to higher junction capacitance. | Select when legacy DO-41 compatibility is required and system-level surge threat exceeds 400W. |
Compared with SMAJ300CA and 1.5KE300CA, the P4KE300CA offers optimal balance of axial DO-41 fit, precise 414V clamping, and AEC-Q101 qualification - making it preferred for space-constrained automotive and industrial designs requiring deterministic voltage limiting.
Availability
P4KE300CA is available at Aetrix Electronics and suitable for automotive lighting control, industrial PLC I/O protection, DC power rail safeguarding, and RS-485 communication line hardening requiring stable component supply and long-term lifecycle support.
Supply support for P4KE300CA 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 with global distribution and AEC-Q101 validation capabilities.
The P4KE Series is engineered for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where reliability under repetitive surge stress is mandatory.
FAQ
What does the 'CA' suffix indicate in P4KE300CA?
The 'CA' suffix in P4KE300CA denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional 'C' variants that require correct polarity orientation, P4KE300CA can be installed without regard to anode/cathode direction, simplifying board layout and reducing assembly errors in AC or floating systems.
Is P4KE300CA suitable for automotive applications?
Yes, P4KE300CA is AEC-Q101 qualified and specifically validated for automotive use cases including engine control units, lighting modules, and body electronics. Its –55°C to +175°C operating range, DO-41 mechanical robustness, and compliance with ISO 7637-2 load-dump waveforms make P4KE300CA appropriate for under-hood and cabin-mounted systems requiring certified reliability.
How does P4KE300CA compare to P4KE300A?
P4KE300A is unidirectional with a cathode band marking and intended for DC rail protection where polarity is fixed; P4KE300CA is bidirectional with no polarity marking and suited for AC, differential, or floating node protection. Both share identical VWM (256V), VBR (285–315V), and VC (414V) specs, but P4KE300CA's symmetrical IV curve enables broader topology flexibility without redesigning PCB layout.
What is the maximum clamping voltage of P4KE300CA during a surge event?
The maximum clamping voltage of P4KE300CA is 414 V at a peak pulse current of 1.00 A under the standard 10/1000μs waveform. This value represents the highest voltage imposed on protected circuitry during worst-case surge conditions and is critical for ensuring downstream components remain within their absolute maximum ratings - especially for 300V-class power stages and isolation barriers.
Can P4KE300CA replace P4KE300 in an existing design?
No - P4KE300 is unidirectional and requires correct polarity alignment, whereas P4KE300CA is bidirectional and lacks cathode marking. Direct substitution may result in improper clamping if installed in a polarity-sensitive location. If replacing P4KE300 with P4KE300CA, verify that the circuit node is either AC-coupled, floating, or tolerant of bidirectional conduction; otherwise, retain the unidirectional variant or redesign the protection network.
P4KE300CA 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):
- 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)
P4KE300CA FAQ
1.How can I place an order for P4KE300CA through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE300CA 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 P4KE300CA reliable?
The price and inventory of P4KE300CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE300CA is usually 5 days.
3.What payment methods are accepted for P4KE300CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE300CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE300CA?
P4KE300CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE300CA 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 P4KE300CA?
For technical support, including P4KE300CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE300CA requirements.
6.How does Aetrix verify that P4KE300CA is sourced from the original manufacturer or authorized distributors?
All P4KE300CA 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 P4KE300CA meets industry standards.
7.What is the process for return or replacement of P4KE300CA?
All P4KE300CA units undergo pre-shipment inspection (PSI). If there is an issue with P4KE300CA, 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 P4KE300CA part is unused and in its original packaging.
Return procedure for P4KE300CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE300CA Tags
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