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Taiwan Semiconductor Corporation P4KE30CA
- Part No.:
- P4KE30CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE30CA.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:3,751
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Product details
Overview
P4KE30CA from Taiwan Semiconductor is a bidirectional transient voltage suppressor (TVS) diode designed for high-energy ESD and surge protection in DC power rails and signal lines. It features a 30V nominal standoff voltage, 400W peak pulse power rating at 10/1000μs, clamping voltage of 43.5V at 9.6A peak pulse current, and operates across –55°C to +175°C junction temperature range - deployed in automotive body control modules and industrial sensor interfaces.
For engineers reviewing the P4KE30CA datasheet, P4KE30CA pinout, P4KE30CA application, or P4KE30CA equivalent, key selection criteria include bidirectional clamping capability, DO-41 package compatibility, low leakage (<1μA at 24.3V), fast response time (<5ns), and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
The P4KE30CA implements a silicon avalanche diode structure optimized for bidirectional transient suppression. Its breakdown voltage is specified at 27.0–33.0V (min/max) with 1mA test current, and it maintains stable clamping performance up to 175°C junction temperature.
It delivers 400W non-repetitive surge handling per ANSI/IEEE C62.35 10/1000μs waveform, with maximum clamping voltage of 43.5V at 9.6A IPPM. Reverse leakage remains below 1μA at its 24.3V working stand-off voltage, supporting low-power system integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Voltage | 30V - defines rated standoff level before avalanche conduction begins in either polarity |
| Breakdown Voltage VBR | 27.0–33.0V @ 1mA - ensures reliable turn-on margin above operating rail while avoiding false triggering |
| Working Stand-off Voltage VWM | 24.3V - maximum continuous reverse voltage the device blocks without significant leakage |
| Peak Pulse Power PPK | 400W @ 10/1000μs - sustains high-energy transients such as ISO 7637-2 Load Dump or IEC 61000-4-5 surges |
| Clamping Voltage VC | 43.5V @ 9.6A - limits downstream voltage stress during surge events to protect 3.3V/5V/12V ICs |
| Junction Temperature Range | –55°C to +175°C - enables deployment in under-hood automotive and industrial environments |
| Response Time | <5.0ns - ensures sub-microsecond reaction to fast EFT and ESD pulses per IEC 61000-4-2/4 |
Pinout & Package
Package: DO-204AL (DO-41) - axial-leaded, glass-passivated, RoHS-compliant package with pure tin-plated leads solderable per J-STD-002; meets UL 94V-0 flammability and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Current entry point in forward bias; cathode reference in reverse bias | Bidirectional symmetry means either lead serves as reference - no polarity marking required for CA devices |
| Cathode (banded end) | Current exit point in forward bias; avalanche conduction node in reverse bias | Band denotes conventional cathode; functionally identical to anode in bidirectional operation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and infotainment power supplies |
| 400W surge rating (10/1000μs) | Withstands repetitive load dump and coupled lightning surges without degradation |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage stress on protected ICs compared to higher-ratio TVS devices |
| Reverse leakage <1μA @ 24.3V | Prevents excessive standby current in battery-powered systems and low-power sensors |
| Halogen-free & RoHS compliant | Meets IPC/JEDEC J-STD-709C and IEC 61249-2-21 for green manufacturing compliance |
Applications
| Automotive Body Control Module | Industrial Sensor Interface |
|---|---|
|
Use Scenario: Protecting LIN bus transceivers and microcontroller GPIOs from load dump and jump-start induced transients in vehicle door modules. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between power rail and ground, shunting surge energy away from 5V logic circuitry. Use Value: Maintains system uptime by limiting voltage excursion to 43.5V during 100V/50ms load dump events, preventing latch-up or permanent damage to MCU I/O. |
Use Scenario: Safeguarding 4–20mA current loop receivers and analog front-end amplifiers in factory automation PLC input cards. IC Role / Device Role / Timing Role: Primary surge suppression component across supply and signal lines, activated within 5ns of transient onset. Use Value: Enables compliance with IEC 61000-4-5 Level 3 (2kV line-earth) without derating or additional filtering components. |
| LED Driver Power Input | USB-C Port ESD Protection |
|
Use Scenario: Securing constant-current LED driver ICs against inductive kickback from relay-controlled AC mains switching. IC Role / Device Role / Timing Role: Parallel-connected TVS across DC input terminals, absorbing 400W surge energy from relay coil flyback. Use Value: Eliminates need for snubber RC networks by clamping transients to 43.5V, preserving driver MOSFET gate oxide integrity. |
Use Scenario: Providing secondary-level ESD robustness on VBUS and CC lines of USB-C receptacles in portable medical devices. IC Role / Device Role / Timing Role: Low-capacitance (≈100pF) bidirectional clamp placed after primary ESD array to handle residual high-energy strikes. Use Value: Achieves >15kV contact discharge immunity per IEC 61000-4-2 while maintaining signal integrity due to sub-5ns response. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33CA | DO-214AA package; 33V nominal; 600W peak power; lower clamping voltage (53.3V @ 11.2A) | Higher power handling but larger footprint; better suited for PCB space-constrained designs requiring >400W margin | Select when board layout allows SMC/SMB footprint and higher surge margin is prioritized over axial lead compatibility |
| 1.5KE33CA | DO-201AD package; 33V nominal; 1500W peak power; higher clamping voltage (53.3V @ 28.3A) | Designed for higher-energy transients (e.g., ISO 16750-2); less suitable for compact consumer electronics | Choose for heavy-duty industrial power supplies where 1.5kW surge capacity outweighs size and thermal constraints |
Compared with SMBJ33CA and 1.5KE33CA, the P4KE30CA offers optimal balance of axial DO-41 compatibility, AEC-Q101 qualification, and precise 30V clamping alignment for 24V automotive and industrial systems - making it preferred where legacy through-hole assembly and strict voltage coordination are required.
Availability
P4KE30CA is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and LED driver power inputs requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant surge protection.
Supply support for P4KE30CA 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 - headquartered in Hsinchu, Taiwan, with global distribution and AEC-Q101 validation capabilities.
The P4KE series targets cost-sensitive, high-reliability transient suppression in automotive and industrial applications - engineered for robust surge handling in DO-41 packaging with halogen-free, RoHS-compliant materials and extended temperature operation.
FAQ
What is the key difference between P4KE30CA and P4KE30A?
The P4KE30CA is bidirectional, meaning it provides symmetrical clamping in both polarities - ideal for AC-coupled or floating signal lines. In contrast, P4KE30A is unidirectional and requires correct polarity orientation. The P4KE30CA's bidirectional behavior is confirmed in the datasheet's "Devices for bipolar applications" section and applies to all CA-suffix variants in the P4KE series.
Does P4KE30CA meet AEC-Q101 requirements?
Yes, P4KE30CA is AEC-Q101 qualified as explicitly stated in the "FEATURES" section of the datasheet. This qualification covers stress tests including high-temperature operating life, temperature cycling, and ESD robustness - validating its suitability for automotive under-hood and cabin applications.
What is the maximum clamping voltage of P4KE30CA at its rated peak pulse current?
The maximum clamping voltage of P4KE30CA is 43.5V at 9.6A peak pulse current (IPPM), measured under the standard 10/1000μs waveform. This value is listed in the "MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS" table for Part Number P4KE30CA and defines the upper voltage limit imposed on protected circuits during surge events.
Can P4KE30CA be used in place of a unidirectional TVS like P4KE30C?
No - P4KE30C does not exist in the official P4KE series nomenclature. Only "P4KE30" (unidirectional) and "P4KE30A" (tight-tolerance unidirectional) are defined. The "CA" suffix specifically denotes bidirectional configuration. Substituting P4KE30CA for a unidirectional part may cause unintended conduction in DC-biased circuits unless polarity independence is verified in the target application.
What is the junction capacitance of P4KE30CA at 0V bias?
The datasheet does not specify junction capacitance for P4KE30CA individually, but Figure 5 shows typical CJ ≈ 100pF at VR = 0V for the P4KE series across multiple voltages. Since capacitance scales inversely with breakdown voltage, and P4KE30CA falls near the mid-range of the series, 100pF is the validated typical value at 1MHz and zero bias - relevant for high-speed signal line protection design.
P4KE30CA 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):
- 25.6V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 41.4V
- Current - Peak Pulse (10/1000µs):
- 10A
- 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)
P4KE30CA FAQ
1.How can I place an order for P4KE30CA through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE30CA 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 P4KE30CA reliable?
The price and inventory of P4KE30CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE30CA is usually 5 days.
3.What payment methods are accepted for P4KE30CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE30CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE30CA?
P4KE30CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE30CA 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 P4KE30CA?
For technical support, including P4KE30CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE30CA requirements.
6.How does Aetrix verify that P4KE30CA is sourced from the original manufacturer or authorized distributors?
All P4KE30CA 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 P4KE30CA meets industry standards.
7.What is the process for return or replacement of P4KE30CA?
All P4KE30CA units undergo pre-shipment inspection (PSI). If there is an issue with P4KE30CA, 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 P4KE30CA part is unused and in its original packaging.
Return procedure for P4KE30CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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