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Taiwan Semiconductor Corporation P4KE30A
- Part No.:
- P4KE30A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE30A.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:6,815
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Product details
Overview
P4KE30A from Taiwan Semiconductor is a unidirectional 400W transient voltage suppressor (TVS) diode designed for primary-level overvoltage protection in DC power rails and signal lines. It features a nominal breakdown voltage of 30 V, clamps transients to ≤41.4 V at 10.0 A peak pulse current, and maintains low leakage (<1 μA at 25.6 V working stand-off voltage), making it suitable for automotive body electronics and industrial I/O interface protection.
For engineers reviewing the P4KE30A datasheet, P4KE30A pinout, P4KE30A application, or P4KE30A equivalent, key selection criteria include its DO-41 package compatibility, 10/1000 μs surge rating, unidirectional polarity marking, and AEC-Q101 qualification option - all critical for ESD and lightning-induced transient suppression in harsh-environment designs.
Technical Context
The P4KE30A operates as a silicon avalanche diode with fast response time (<1.0 ps from 0 V to VBR) and low dynamic impedance, enabling effective clamping of fast-rising transients such as EFT and ISO 7637-2 pulses. Its 400 W peak pulse power rating is specified at the standard 10/1000 μs waveform per ANSI/IEEE C62.35.
Thermal performance is defined by a maximum junction temperature of +175 °C and derated steady-state power dissipation (1 W at TL = 75 °C on 5 × 5 mm copper pads). The device exhibits a positive temperature coefficient of VBR (+0.097 %/°C), ensuring stable breakdown behavior across operating temperature ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 μs) | 400 W - sustains high-energy surges without failure in automotive load-dump or inductive switching events |
| Working Stand-off Voltage (VWM) | 25.6 V - maximum continuous DC or RMS voltage the device blocks without conduction |
| Breakdown Voltage (VBR @ 1 mA) | 28.5–31.5 V - guaranteed avalanche onset range, ensuring reliable triggering before system damage |
| Clamping Voltage (VC @ 10.0 A) | 41.4 V - maximum voltage seen by protected circuit during full-rated surge, defining safe margin for downstream ICs |
| Reverse Leakage Current (ID) | <1 μA at 25.6 V - negligible standby power loss and minimal impact on high-impedance sensing nodes |
| Junction Temperature Range | −55 °C to +175 °C - supports operation in under-hood automotive and industrial environments |
| Package | DO-204AL (DO-41) - industry-standard axial leaded package with tin-plated leads, UL 94V-0 molding compound |
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; weight ≈ 0.300 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Current entry terminal during forward conduction | Connected to ground or lower-potential rail in unidirectional TVS configuration |
| Cathode (banded end) | Avalanche clamping terminal | Connected to protected line; conducts surge current to ground when VLINE exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| 400 W surge capability (10/1000 μs) | Enables robust protection against ISO 7637-2 Pulse 5a (load dump) in 12 V automotive systems |
| Clamping ratio (VC/VBR) ≈ 1.36 | Indicates low dynamic impedance and efficient energy diversion without excessive voltage overshoot |
| AEC-Q101 qualified version available (P4KE30AH) | Validated for automotive-grade reliability including temperature cycling, HAST, and mechanical shock |
| UL Recognized (E326243) & RoHS/halogen-free | Meets safety and environmental compliance requirements for global industrial and automotive production |
| Fast response time <1.0 ps | Responds before most microsecond-scale transients fully develop, minimizing stress on downstream ICs |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting 12 V supply inputs of BCM microcontrollers from load-dump transients up to 35 V. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed between fuse and LDO input, triggered within picoseconds of surge onset. Use Value: Limits voltage to ≤41.4 V during 400 W surges, preventing latch-up or gate oxide damage in 3.3 V/5 V logic ICs downstream. |
Use Scenario: Safeguarding 24 V digital input channels of programmable logic controllers against field-wiring ESD and inductive kickback. IC Role / Device Role / Timing Role: Front-end TVS on optocoupler input side, absorbing >8 kV contact ESD per IEC 61000-4-2. Use Value: Maintains <1 μA leakage at 25.6 V, preserving input threshold accuracy while clamping 10/1000 μs surges to safe levels. |
| LED Driver Power Supply Input | RS-485 Transceiver Bus Line Protection |
Use Scenario: Suppressing voltage spikes induced by relay switching or hot-plug events in constant-current LED driver inputs. IC Role / Device Role / Timing Role: Unidirectional TVS placed across bulk capacitor input, shunting surge energy to ground before reaching controller IC. Use Value: Withstands repeated 400 W surges without degradation, extending system lifetime in outdoor lighting applications. |
Use Scenario: Protecting RS-485 transceiver bus pins (A/B) from cable-induced surges in factory automation networks. IC Role / Device Role / Timing Role: Bidirectional variant (e.g., P4KE30CA) used on differential pair; P4KE30A applied on single-ended reference or shield lines. Use Value: Clamps common-mode transients to ≤41.4 V while adding <1 pF junction capacitance - no data rate degradation at ≤10 Mbps. |
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 P4KE30A | Identical electrical specs (VBR, VC, PPK); same DO-41 package; RoHS-compliant but not AEC-Q101 qualified by default | No AEC-Q101 option; suited for industrial/commercial use where automotive qualification is not required | Select when cost sensitivity outweighs automotive qualification needs and supply chain diversification is desired |
| ON Semiconductor 1.5KE30A | Same 30 V nominal rating and DO-41 package, but rated for 1500 W (10/1000 μs); higher clamping voltage (46.7 V @ 32.4 A) | Better for high-energy surges (e.g., 24 V load dump), but less precise clamping margin for 3.3 V/5 V ICs | Choose when surge energy exceeds 400 W and system voltage tolerance allows ≥46.7 V clamping |
Compared with Littelfuse P4KE30A, the Taiwan Semiconductor P4KE30A offers identical baseline protection with optional AEC-Q101 qualification; versus ON Semi 1.5KE30A, it provides tighter clamping and lower surge energy handling - ideal for space-constrained 12 V systems prioritizing voltage margin over extreme energy absorption.
Availability
P4KE30A is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, LED driver power supplies, and RS-485 communication interfaces requiring stable component supply and long-term manufacturability.
Supply support for P4KE30A 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-qualified product lines.
The P4KE series was developed for cost-effective, high-reliability transient suppression in automotive and industrial applications - emphasizing robust surge handling, tight parameter tolerances, and standardized DO-41 packaging for easy integration.
FAQ
What is the maximum clamping voltage of the P4KE30A at its rated peak pulse current?
The P4KE30A has a maximum clamping voltage (VC) of 41.4 V at 10.0 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value defines the highest voltage the protected circuit will experience during a full-rated surge event, and is measured with the device mounted per JEDEC standards. The P4KE30A maintains this clamping performance across its full operating temperature range (−55 °C to +175 °C).
Is the P4KE30A unidirectional or bidirectional, and how is polarity identified?
The P4KE30A is a unidirectional TVS diode, intended for DC line protection where reverse voltage is not expected. Polarity is marked by a cathode band on the DO-41 package - the banded end connects to the protected line, and the unmarked end connects to ground. Bidirectional variants (e.g., P4KE30CA) exist in the same series but are distinctly marked and specified.
Does the P4KE30A meet automotive reliability standards?
The base P4KE30A is not automatically AEC-Q101 qualified; however, the variant P4KE30AH (with "H" suffix) is explicitly qualified to AEC-Q101 for automotive applications. This includes stress testing for temperature cycling, humidity, mechanical shock, and high-temperature operating life. Always verify the part number suffix and associated qualification documentation when selecting for automotive use.
What is the working stand-off voltage (VWM) of the P4KE30A, and why does it matter?
The P4KE30A has a working stand-off voltage (VWM) of 25.6 V - the maximum continuous DC or RMS voltage it can block without significant leakage. This value ensures the device remains non-conductive during normal operation while allowing sufficient margin below the 30 V nominal breakdown voltage. Selecting VWM ≥110% of system operating voltage prevents false triggering and minimizes power loss.
Can the P4KE30A be used in place of the P4KE30 (non-A) version?
Yes - the P4KE30A replaces the P4KE30 with tighter breakdown voltage tolerance (28.5–31.5 V vs. 27.0–33.0 V) and lower clamping voltage (41.4 V vs. 43.5 V), offering improved precision and protection margin. Both share identical DO-41 packaging, thermal ratings, and surge capability. The "A" suffix indicates enhanced parameter consistency, making P4KE30A the preferred choice for new designs requiring tighter specifications.
P4KE30A 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):
- 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)
P4KE30A FAQ
1.How can I place an order for P4KE30A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE30A 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 P4KE30A reliable?
The price and inventory of P4KE30A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE30A is usually 5 days.
3.What payment methods are accepted for P4KE30A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE30A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE30A?
P4KE30A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE30A 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 P4KE30A?
For technical support, including P4KE30A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE30A requirements.
6.How does Aetrix verify that P4KE30A is sourced from the original manufacturer or authorized distributors?
All P4KE30A 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 P4KE30A meets industry standards.
7.What is the process for return or replacement of P4KE30A?
All P4KE30A units undergo pre-shipment inspection (PSI). If there is an issue with P4KE30A, 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 P4KE30A part is unused and in its original packaging.
Return procedure for P4KE30A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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