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Taiwan Semiconductor Corporation P4KE250A
- Part No.:
- P4KE250A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE250A.pdf
- Description:
- TVS DIODE 214VWM 344VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:9,249
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Product details
Overview
P4KE250A from Taiwan Semiconductor is a unidirectional 400W transient voltage suppressor (TVS) diode with a nominal breakdown voltage of 250 V, working stand-off voltage of 214 V, and maximum clamping voltage of 344 V at 1.2 A peak pulse current. It features low leakage (<1 µA), fast response (<1.0 ps), and DO-204AL (DO-41) axial package for overvoltage protection in power supply inputs and industrial control interfaces.
For engineers reviewing the P4KE250A datasheet, P4KE250A pinout, P4KE250A application, or P4KE250A equivalent, key selection criteria include clamping voltage margin versus system rail, standoff voltage derating for temperature, unidirectional polarity marking, and 10/1000 µs surge compliance in high-energy transients.
Technical Context
The P4KE250A operates as a silicon avalanche diode optimized for unidirectional transient suppression. Its breakdown voltage range is 237–263 V at 1 mA test current, with a temperature coefficient of 0.110 %/°C - critical for thermal stability in automotive and industrial ambient ranges.
It delivers 400 W peak pulse power per 10/1000 µs waveform, clamps to ≤344 V under 1.2 A transient current, and maintains <1 µA reverse leakage above 214 V - enabling reliable protection without loading sensitive downstream circuitry during normal operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR Min/Max | 237 V / 263 V at 1 mA - defines minimum and maximum voltage at which avalanche conduction begins, setting clamping onset threshold |
| VWM | 214 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA; must exceed system DC rail by ≥10% |
| VC@IPPM | 344 V at 1.2 A - clamped voltage during 10/1000 µs surge; determines worst-case stress on protected IC or regulator |
| PPK | 400 W - peak pulse power handling capability per standard 10/1000 µs waveform; defines single-event energy absorption limit |
| IR @ VWM | <1 µA - ensures negligible standby current draw and no measurable loading on high-impedance signal or bias rails |
| TJ Range | −55 °C to +175 °C - enables deployment in under-hood automotive, industrial motor drives, and outdoor power electronics |
Pinout & Package
Package: DO-204AL (DO-41), axial-leaded, epoxy-molded case with cathode band marking for unidirectional polarity. Leads are pure tin-plated, solderable per J-STD-002, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground reference terminal | Connected to system ground or low-side return path; carries full surge current during clamping |
| Cathode | Protected line input terminal | Connected to line being protected (e.g., 24 V rail); marked with band; reverse-biased during normal operation |
Key Features
| Feature | Design Value |
|---|---|
| 400 W surge rating (10/1000 µs) | Supports IEC 61000-4-5 Level 3 (1 kV/2 Ω) and ISO 7637-2 Pulse 1/2a in 24 V systems |
| Clamping ratio VC/VBR ≈ 1.37 | Ensures tight voltage limiting with minimal overvoltage margin - critical for protecting 300 V-rated MOSFETs or bridge rectifiers |
| Response time <1.0 ps | Activates faster than most ESD events and switching transients, preventing latch-up or gate oxide damage in downstream ICs |
| AEC-Q101 qualified option available | Validated for automotive under-hood applications including engine control modules and body electronics |
| UL Recognized (E326243) | Meets safety requirements for end-equipment certification in industrial and consumer power supplies |
Applications
| Industrial Power Supply Input Protection | Automotive Body Control Module (BCM) Inputs |
|---|---|
Use Scenario: 24 V DC input stage of programmable logic controller (PLC) exposed to load dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS placed between input rail and chassis ground to clamp transients before they reach upstream DC/DC converter. Use Value: Limits voltage to ≤344 V during 1.2 A surge, protecting 40 V-rated input MOSFETs and ensuring system reset-free operation. | Use Scenario: LIN bus or sensor supply line in BCM subjected to battery disconnect transients and alternator load dump. IC Role / Device Role / Timing Role: Standoff protection device on 12 V sensor rail, absorbing energy from ISO 7637-2 Pulse 5a (load dump). Use Value: Withstands 400 W surges while maintaining <1 µA leakage - avoids false wake-ups or sensor bias drift during quiescent mode. |
| AC-DC Adapter Surge Suppression | Motor Drive Gate Driver Protection |
Use Scenario: Secondary-side output of universal-input AC-DC adapter powering IoT gateway, exposed to EFT and lightning-induced surges. IC Role / Device Role / Timing Role: Final-stage TVS on regulated 5 V/12 V output rail, guarding against cross-coupled transients from primary-side switching noise. Use Value: Clamps to 344 V without degradation, preserving output regulation integrity and preventing brownout resets in connected microcontrollers. | Use Scenario: Isolated gate drive supply rail (e.g., 15 V) feeding IGBT drivers in variable-frequency drives. IC Role / Device Role / Timing Role: Transient limiter on auxiliary supply, placed between isolated DC/DC output and driver IC VDD pin. Use Value: Fast <1.0 ps response prevents gate oxide overstress during shoot-through or Miller-induced spikes, extending driver lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ250A | Same 250 V nominal, DO-214AC (SMA) surface-mount package; 400 W rating; VC = 354 V @ 1.13 A | Requires PCB rework for SMT vs. through-hole; better thermal dissipation in high-density layouts | Select when automated assembly and board space constraints favor SMT over axial leads |
| ON Semiconductor 1.5KE250A | Same 250 V nominal, DO-201AD (axial) package; 1500 W rating; VC = 360 V @ 4.2 A | Higher energy handling but larger footprint and higher clamping voltage; suited for primary-side or high-energy zones | Select when system-level surge testing requires >400 W margin or legacy 1.5KE footprint compatibility is mandatory |
Compared with SMAJ250A and 1.5KE250A, the P4KE250A offers optimal balance of axial through-hole reliability, precise 344 V clamping, and compact DO-41 form factor - making it ideal for secondary-side, space-constrained, and serviceable industrial power designs.
Availability
P4KE250A is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, AC-DC adapters, and motor drive gate driver protection requiring stable component supply and long-term obsolescence management.
Supply support for P4KE250A 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 TVS diodes, rectifiers, and power devices since 1979.
The P4KE series is part of TSC's high-reliability transient suppression portfolio, engineered for robustness in harsh environments - particularly targeting industrial automation, automotive subsystems, and power conversion where consistent clamping performance and AEC-Q101 qualification matter.
FAQ
What is the maximum clamping voltage of the P4KE250A under standard surge conditions?
The P4KE250A has a maximum clamping voltage (VC) of 344 V when subjected to its rated peak pulse current of 1.2 A under the 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during transient events - critical for ensuring downstream components like MOSFETs or regulators remain within safe operating limits. The P4KE250A consistently achieves this clamping performance across its specified junction temperature range.
Is the P4KE250A suitable for automotive applications?
Yes - the P4KE250A is available in an AEC-Q101 qualified variant (P4KE250AH), validated for automotive use in under-hood and body electronics. While the base P4KE250A meets all electrical and thermal specifications required for automotive environments - including −55 °C to +175 °C operation and robust surge immunity - the "H" suffix version provides certified test documentation for qualification-critical programs. Both versions share identical P4KE250A electrical parameters and DO-41 packaging.
How does the P4KE250A differ from the P4KE250 (non-A) version?
The P4KE250A features tighter breakdown voltage tolerance (237–263 V) compared to the broader P4KE250 range (225–275 V), resulting in more predictable clamping behavior and reduced design margin uncertainty. It also exhibits lower maximum clamping voltage (344 V vs. 360 V) and slightly higher peak pulse current rating (1.20 A vs. 1.10 A). These enhancements make the P4KE250A preferable for precision protection schemes where voltage overshoot must be minimized - such as near sensitive analog front-ends or low-voltage logic rails.
What is the reverse leakage current specification for the P4KE250A at its working voltage?
The P4KE250A specifies a maximum reverse leakage current (IR) of less than 1 µA when biased at its working stand-off voltage (VWM) of 214 V. This ultra-low leakage ensures minimal power loss and zero functional impact on high-impedance circuits - for example, it introduces negligible error in precision voltage monitoring or sensor bias networks. The specification holds across the full operating temperature range (−55 °C to +175 °C), supporting stable performance in thermally demanding deployments.
Can the P4KE250A be used in bidirectional configurations?
No - the P4KE250A is a unidirectional TVS diode, designed for DC line-to-ground protection with explicit cathode marking. Bidirectional operation requires symmetrical breakdown in both polarities, which is only supported by CA-suffixed variants (e.g., P4KE250CA). Using the P4KE250A in reverse-biased AC applications risks permanent failure due to forward conduction and thermal runaway. For bidirectional surge protection, select the P4KE250CA or equivalent bipolar TVS with matched VBR in both directions.
P4KE250A 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):
- 214V
- Voltage - Breakdown (Min):
- 237V
- Voltage - Clamping (Max) @ Ipp:
- 344V
- Current - Peak Pulse (10/1000µs):
- 1.2A
- 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)
P4KE250A FAQ
1.How can I place an order for P4KE250A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE250A 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 P4KE250A reliable?
The price and inventory of P4KE250A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE250A is usually 5 days.
3.What payment methods are accepted for P4KE250A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE250A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE250A?
P4KE250A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE250A 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 P4KE250A?
For technical support, including P4KE250A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE250A requirements.
6.How does Aetrix verify that P4KE250A is sourced from the original manufacturer or authorized distributors?
All P4KE250A 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 P4KE250A meets industry standards.
7.What is the process for return or replacement of P4KE250A?
All P4KE250A units undergo pre-shipment inspection (PSI). If there is an issue with P4KE250A, 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 P4KE250A part is unused and in its original packaging.
Return procedure for P4KE250A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE250A Tags
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