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Taiwan Semiconductor Corporation P4KE30C
- Part No.:
- P4KE30C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE30C.pdf
- Description:
- 400W, 30V, BIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:3,503
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Product details
Overview
P4KE30C from Taiwan Semiconductor is a unidirectional 400W transient voltage suppressor (TVS) diode designed for primary overvoltage protection in DC power rails and signal lines. It features a 30V nominal breakdown voltage (VBR min/max = 27.0–33.0V at 1mA), 24.3V working stand-off voltage (VWM), clamps to ≤43.5V at 9.6A peak pulse current, and meets AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the P4KE30C datasheet, P4KE30C pinout, P4KE30C application, or P4KE30C equivalent, this device is selected for robust ESD and lightning surge protection in automotive body control modules, industrial sensor interfaces, and LED driver input stages where low clamping voltage and fast sub-nanosecond response (<1.0ps from 0V to VBR) are critical.
Technical Context
The P4KE30C operates as a unidirectional avalanche diode with a DO-204AL (DO-41) axial package and cathode-band polarity marking. Its clamping behavior follows the 10/1000μs standard waveform per ANSI/IEEE C62.35, delivering 400W peak pulse power at TA = 25°C with derating above ambient temperature.
It exhibits low reverse leakage (<1μA at 24.3V), a temperature coefficient of VBR = 0.097%/°C, and a maximum junction temperature of +175°C - enabling operation in under-hood automotive environments and high-temperature industrial enclosures without thermal runaway.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24.3 V - Maximum continuous DC operating voltage before significant leakage; ensures compatibility with 24V systems. |
| VBR @ IT=1mA | 27.0–33.0 V - Breakdown voltage range defining reliable avalanche onset; tight tolerance supports consistent protection threshold. |
| VC @ IPPM | ≤43.5 V at 9.6 A - Clamping voltage during 10/1000μs surge; limits downstream IC stress to safe levels. |
| PPK | 400 W - Peak pulse power handling capability; sustains high-energy transients like ISO 7637-2 Pulse 1/2a/5a. |
| IR @ VWM | <1 μA - Ultra-low reverse leakage; minimizes standby power loss and avoids false triggering in high-impedance circuits. |
| TJ max | +175 °C - Maximum junction temperature; enables use in engine bay or industrial motor drive applications. |
| Package | DO-204AL (DO-41) - Standard axial leaded package with tin-plated leads; compatible with wave soldering and manual assembly. |
Pinout & Package
DO-204AL (DO-41) axial package with cathode band marking on one end. Leads are pure tin-plated and solderable per J-STD-002. Polarity is unidirectional: cathode band denotes the cathode terminal; anode is the unmarked lead.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/Line side (non-banded end) | Connected to protected line or power rail; conducts forward during surge clamp when cathode is held at higher potential. |
| Cathode | Clamp reference (banded end) | Connected to ground or lower-potential return path; defines clamping voltage relative to this node during transient events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTOL, TCT, and ESD-HBM/MM - suitable for BCM, lighting, and ADAS power inputs. |
| 400W 10/1000μs surge rating | Withstands high-energy transients such as load dump (ISO 7637-2 Pulse 5a) without degradation or failure. |
| Clamping voltage ≤43.5V | Ensures protected ICs (e.g., microcontrollers, CAN transceivers) remain below absolute maximum ratings during surge events. |
| Response time <1.0ps | Activates faster than most semiconductor switching events - prevents voltage overshoot before system-level protection engages. |
| UL Recognized #E-326243 | Meets safety standards for end-equipment certification in industrial and transportation applications. |
Applications
| Automotive Body Control Module (BCM) Power Input | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protects 24V supply input of BCM against load dump and jump-start surges per ISO 7637-2. IC Role / Device Role: Primary TVS clamp placed upstream of DC-DC converter and microcontroller power rails. Use Value: Limits transient voltage to ≤43.5V, preventing latch-up or permanent damage to downstream PMICs and MCUs rated for 45V max input. |
Use Scenario: Shields 4–20mA analog sensor outputs from EFT bursts and cable coupling in factory automation. IC Role / Device Role: Unidirectional TVS on signal line between sensor front-end and ADC input stage. Use Value: Sub-nanosecond response and <1μA leakage preserve signal integrity while suppressing >1kV EFT pulses per IEC 61000-4-4. |
| LED Driver Input Stage | RS-485 Transceiver Bus Line |
Use Scenario: Guards constant-current LED driver input against inductive kickback from relay-controlled AC mains switching. IC Role / Device Role: Standoff-rated TVS across bulk capacitor input terminals. Use Value: 24.3V VWM allows stable operation under 24V nominal supply; 400W rating absorbs repetitive 100V/10ms spikes without thermal fatigue. |
Use Scenario: Protects RS-485 transceiver bus pins (A/B) from induced surges in long cable runs in building management systems. IC Role / Device Role: Bidirectional protection not applicable - P4KE30C is unidirectional; used only on common-mode referenced ground paths or supply rails feeding transceiver. Use Value: Low clamping voltage preserves common-mode margin; UL recognition supports Class 2 installation compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30A | Surface-mount SMB package; 30V standoff; 600W peak power; bidirectional variant available. | Requires PCB redesign for SMD layout; better suited for space-constrained designs with higher surge margin. | Select SMBJ30A when board area is limited and 600W surge headroom is needed; not drop-in due to package and mounting method. |
| 1.5KE30C | Same DO-41 package; 1500W peak power; higher clamping voltage (≤48.4V); larger junction capacitance. | Higher energy handling but less precise clamping; may overstress low-voltage ICs in sensitive analog paths. | Choose 1.5KE30C only when legacy 1.5kW surge immunity is mandated and clamping voltage margin permits. |
Compared with SMBJ30A and 1.5KE30C, the P4KE30C offers optimal balance of axial through-hole manufacturability, 400W surge capacity, and tight 43.5V clamping - making it preferred for cost-sensitive, thermally stable, and automotive-qualified 24V system protection.
Availability
P4KE30C is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and LED driver input protection requiring stable component supply and AEC-Q101-compliant reliability.
Supply support for P4KE30C 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 qualification capabilities.
The P4KE series was developed for cost-effective, high-reliability transient suppression in automotive and industrial power systems - emphasizing robust surge handling, low clamping, and standardized axial packaging for broad manufacturing compatibility.
FAQ
What is the polarity configuration of the P4KE30C?
The P4KE30C is a unidirectional TVS diode with cathode band marking on the DO-41 package. The banded end is the cathode and must be connected toward the protected circuit's ground or lower-potential reference. This configuration ensures proper clamping during positive-going transients on the anode side. The P4KE30C does not provide bidirectional protection - for symmetrical surge suppression, a P4KE30CA or paired unidirectional devices are required.
Does the P4KE30C meet AEC-Q101 qualification?
Yes, the P4KE30C is AEC-Q101 qualified, as confirmed by Taiwan Semiconductor's documentation and ordering code suffix "H" variants (e.g., P4KE30CH). This qualification covers stress tests including high-temperature operating life, temperature cycling, and human-body-model ESD - validating its suitability for automotive power and signal protection applications such as body control modules and lighting drivers.
What is the maximum clamping voltage of the P4KE30C at rated surge current?
The P4KE30C has a maximum clamping voltage (VC) of 43.5 V at 9.6 A peak pulse current (IPPM), tested under the 10/1000μs waveform per ANSI/IEEE C62.35. This value represents the upper limit of voltage seen by downstream components during a full-rated surge event, ensuring compatibility with 45V-tolerant ICs and providing a clear design margin for 24V system protection.
Can the P4KE30C be used in bidirectional signal line protection?
No, the P4KE30C is strictly unidirectional and unsuitable for bidirectional signal line protection such as RS-485 or USB data lines. Its asymmetrical conduction behavior only clamps positive transients relative to ground. For bidirectional protection, the P4KE30CA (bidirectional variant) or a dedicated bidirectional TVS like SMAJ33A must be used - selecting P4KE30C for such applications risks incomplete surge suppression and potential device failure.
What is the junction temperature rating of the P4KE30C?
The P4KE30C has a maximum junction temperature (TJ) rating of +175°C, verified per its Absolute Maximum Ratings table. This enables reliable operation in high-ambient environments such as automotive engine compartments or enclosed industrial drives. Derating of peak power begins above TA = 25°C per Figure 2 in the datasheet, and thermal design must ensure heatsinking or airflow maintains TJ ≤175°C under worst-case surge repetition.
P4KE30C 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):
- 24.3V
- Voltage - Breakdown (Min):
- 27V
- Voltage - Clamping (Max) @ Ipp:
- 43.5V
- Current - Peak Pulse (10/1000µs):
- 9.6A
- 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)
P4KE30C FAQ
1.How can I place an order for P4KE30C through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE30C 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 P4KE30C reliable?
The price and inventory of P4KE30C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE30C is usually 5 days.
3.What payment methods are accepted for P4KE30C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE30C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE30C?
P4KE30C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE30C 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 P4KE30C?
For technical support, including P4KE30C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE30C requirements.
6.How does Aetrix verify that P4KE30C is sourced from the original manufacturer or authorized distributors?
All P4KE30C 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 P4KE30C meets industry standards.
7.What is the process for return or replacement of P4KE30C?
All P4KE30C units undergo pre-shipment inspection (PSI). If there is an issue with P4KE30C, 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 P4KE30C part is unused and in its original packaging.
Return procedure for P4KE30C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE30C Tags
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