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Taiwan Semiconductor Corporation P4KE300C
- Part No.:
- P4KE300C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE300C.pdf
- Description:
- 400W, 300V, BIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:7,553
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Product details
Overview
P4KE300C from Taiwan Semiconductor is a unidirectional transient voltage suppressor (TVS) diode designed for high-energy surge protection in DC power lines and signal paths. It features a 300V nominal standoff voltage, 400W peak pulse power rating at 10/1000μs, clamping voltage of 430V at 0.97A peak pulse current, and operates across –55°C to +175°C junction temperature. It is commonly used in industrial power supply input stages to protect downstream regulators and controllers from lightning-induced surges.
For engineers reviewing the P4KE300C datasheet, P4KE300C pinout, P4KE300C application, or P4KE300C equivalent, key selection criteria include its unidirectional polarity, DO-204AL (DO-41) axial package, low leakage (<1μA at 243V), fast response (<1.0ps), and AEC-Q101 qualification option - all critical for robust overvoltage immunity in automotive and industrial electronics.
Technical Context
The P4KE300C employs a silicon avalanche diode structure optimized for controlled breakdown under transient overvoltage events. Its 300V nominal standoff voltage corresponds to a minimum breakdown voltage of 270V and maximum of 330V at 1mA test current, with a temperature coefficient of 0.110%/°C for VBR stability across operating range.
It delivers 400W peak pulse power per ANSI/IEEE C62.35 standard using the 10/1000μs waveform, clamping to ≤430V at 0.97A IPPM. The device exhibits <1μA reverse leakage at its 243V working stand-off voltage and maintains low dynamic impedance during clamping to limit energy dissipation in protected circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 243 V - Maximum continuous reverse voltage before significant leakage; defines safe operating DC bias level |
| VBR (min/max) | 270 / 330 V @ 1 mA - Ensures reliable, repeatable avalanche initiation within specified tolerance band |
| VC @ IPPM | 430 V @ 0.97 A - Clamped voltage during 10/1000μs surge; determines maximum stress on protected ICs |
| PPK | 400 W - Peak surge energy handling capacity; validates compliance with IEC 61000-4-5 Level 4 |
| TJ max | +175 °C - Enables use in high-temperature environments such as engine compartments or enclosed power modules |
| IR @ VWM | <1 μA - Negligible standby power loss and minimal loading on high-impedance sensing or reference circuits |
| Response time | <1.0 ps - Near-instantaneous turn-on ensures protection before transient energy couples into sensitive nodes |
Pinout & Package
Package: DO-204AL (DO-41), axial leaded, epoxy-molded case with cathode band marking for unidirectional polarity. Leads are pure tin-plated and solderable per J-STD-002; meets UL 94V-0 flammability and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to circuit ground or return path; completes conduction path during reverse-biased surge |
| Cathode | High-side connection point | Connected to protected line (e.g., +12V rail); avalanche breakdown occurs when voltage exceeds VBR relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified variant available | Enables direct use in automotive power distribution modules without additional qualification effort |
| 400W surge capability (10/1000μs) | Meets IEC 61000-4-5 surge immunity requirements for industrial and transportation equipment |
| Clamping ratio VC/VBR ≈ 1.59 | Indicates efficient voltage limiting with moderate overvoltage margin for downstream component safety margins |
| UL Recognized (E326243) | Validates safety compliance for end-equipment certification in North American markets |
| Halogen-free & RoHS compliant | Supports environmental compliance for global OEMs and avoids restrictions in EU, China, and Japan markets |
Applications
| Industrial Power Input Protection | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: 24V DC input stage of programmable logic controller (PLC) exposed to load dump and inductive switching transients. IC Role / Device Role: Primary overvoltage clamp placed between input terminal and bulk capacitor. Use Value: Limits transient voltage to ≤430V, preventing damage to upstream fuse holders and downstream DC-DC converters rated for 450V max input. | Use Scenario: 12V battery feed to BCM microcontroller and CAN transceiver in passenger vehicle door module. IC Role / Device Role: Unidirectional TVS on VBAT rail to absorb ISO 7637-2 Pulse 5a (load dump) surges up to 60V/100ms. Use Value: Maintains <1μA leakage at 243V stand-off, avoiding battery drain while clamping peak to 430V - well below 500V isolation barrier of MCU power domain. |
| LED Driver Surge Suppression | Telecom DC Feeder Protection |
Use Scenario: Constant-current LED driver board powered from 300VDC telecom rectifier output subjected to lightning-induced surges. IC Role / Device Role: Standoff-rated TVS across input terminals to shunt surge energy before it reaches primary-side MOSFET and controller. Use Value: 300V nominal rating matches system DC bus; 430V clamping prevents gate oxide failure in 500V-rated Si MOSFETs used in active PFC stage. | Use Scenario: -48V DC feeder line in central office equipment exposed to induced surges from nearby AC mains or lightning. IC Role / Device Role: Unidirectional TVS on negative rail to clamp positive-going transients while blocking normal negative bias. Use Value: Cathode-to-rail configuration enables clean suppression of positive spikes without affecting steady-state -48V operation or introducing forward conduction loss. |
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 SMAJ300A | Same DO-214AC (SMA) package; 300V VWM, 400W PPK, but bidirectional; clamping voltage 430V @ 0.97A | Requires polarity-aware PCB layout; not drop-in due to different footprint and bidirectional behavior | Select when space-constrained SMT layout is required and bidirectional protection is acceptable |
| ON Semiconductor 1.5KE300A | Higher PPK (1500W), same DO-204AL package, 300V VWM, clamping 430V @ 3.5A; larger thermal mass | Over-spec'd for 400W use cases; higher cost and board area; may require derating in confined enclosures | Select only when legacy 1.5KE footprint compatibility is mandatory and higher surge margin is needed |
Compared with SMAJ300A and 1.5KE300A, the P4KE300C offers optimal balance of axial DO-41 compatibility, unidirectional precision, and 400W surge rating - making it ideal for cost-sensitive, through-hole industrial power inputs where polarity control and thermal management are prioritized.
Availability
P4KE300C is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, LED driver systems, and telecom DC feeder protection requiring stable component supply and long-term obsolescence management.
Supply support for P4KE300C 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 devices, TVS diodes, rectifiers, and MOSFETs for industrial and automotive markets.
The P4KE series is part of TSC's high-reliability transient suppression portfolio, engineered specifically for robust surge immunity in harsh environments - including automotive power distribution, industrial automation, and outdoor lighting systems.
FAQ
What is the polarity configuration of the P4KE300C?
The P4KE300C is a unidirectional TVS diode, with cathode marked by a band on the DO-41 package. It conducts only during reverse-bias overvoltage events - i.e., when the cathode voltage exceeds the anode by more than its breakdown voltage. This configuration prevents forward conduction during normal operation, ensuring zero DC power loss on the protected line. The P4KE300C must be installed with correct orientation relative to system ground and supply rail to function as intended.
Does the P4KE300C meet AEC-Q101 reliability standards?
The base P4KE300C is not AEC-Q101 qualified; however, the P4KE300CH variant (with "H" suffix) is explicitly qualified per AEC-Q101 Rev D for automotive applications. That version undergoes stress testing including HTGB, HTRB, and temperature cycling to validate performance in under-hood environments. For non-automotive industrial use, the standard P4KE300C remains fully suitable and widely deployed in PLCs and power supplies.
What is the maximum clamping voltage of the P4KE300C under surge conditions?
The P4KE300C has a maximum clamping voltage (VC) of 430 V when subjected to its rated peak pulse current of 0.97 A under the standardized 10/1000 μs double-exponential waveform. This value is guaranteed across temperature and lifetime per Taiwan Semiconductor's characterization data. It represents the highest voltage seen at the protected node during worst-case surge events - a critical parameter for ensuring downstream components remain within their absolute maximum ratings.
Can the P4KE300C be used in bidirectional signal line protection?
No - the P4KE300C is strictly unidirectional and unsuitable for bidirectional signal lines such as RS-485 or CAN. Its asymmetrical IV curve allows conduction only in reverse bias; applying positive voltage beyond VBR to the anode would forward-bias the junction and cause uncontrolled current flow. For bidirectional protection, select the P4KE300CA variant (with "CA" suffix), which uses back-to-back diode construction and supports symmetrical clamping in both directions.
How does the P4KE300C compare to the 1.5KE300A in terms of surge handling?
The P4KE300C is rated for 400W peak pulse power, while the 1.5KE300A handles 1500W - reflecting a fundamental difference in thermal mass and surge duty cycle capability. Both share identical VWM (243V), VBR (270–330V), and VC (430V), but the 1.5KE300A sustains higher peak currents (3.5A vs. 0.97A) and is intended for less frequent, higher-energy events. The P4KE300C is optimized for repetitive, lower-energy transients typical in industrial power rails where size and cost are constrained.
P4KE300C 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):
- 243V
- Voltage - Breakdown (Min):
- 270V
- Voltage - Clamping (Max) @ Ipp:
- 430V
- Current - Peak Pulse (10/1000µs):
- 970mA
- 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)
P4KE300C FAQ
1.How can I place an order for P4KE300C through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE300C 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 P4KE300C reliable?
The price and inventory of P4KE300C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE300C is usually 5 days.
3.What payment methods are accepted for P4KE300C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE300C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE300C?
P4KE300C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE300C 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 P4KE300C?
For technical support, including P4KE300C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE300C requirements.
6.How does Aetrix verify that P4KE300C is sourced from the original manufacturer or authorized distributors?
All P4KE300C 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 P4KE300C meets industry standards.
7.What is the process for return or replacement of P4KE300C?
All P4KE300C units undergo pre-shipment inspection (PSI). If there is an issue with P4KE300C, 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 P4KE300C part is unused and in its original packaging.
Return procedure for P4KE300C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE300C Tags
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