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Taiwan Semiconductor Corporation P4KE250
- Part No.:
- P4KE250
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE250.pdf
- Description:
- 400W, 250V, UNIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:5,899
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Product details
Overview
P4KE250 from Taiwan Semiconductor is a unidirectional transient voltage suppressor (TVS) diode designed for high-energy surge protection in DC power rails and signal lines. It features a 250V nominal breakdown voltage (VBR min/max = 225–275V at 1mA), 202V working stand-off voltage (VWM), clamps to ≤360V at 1.1A peak pulse current, and delivers 400W peak pulse power per 10/1000μs waveform - deployed in industrial power supplies and automotive ECU input protection.
For engineers reviewing the P4KE250 datasheet, P4KE250 pinout, P4KE250 application, or P4KE250 equivalent, key selection criteria include its DO-41 package compatibility, low leakage (<1μA at VWM), fast clamping response (<1.0ps rise time), and AEC-Q101 qualification option (P4KE250H), making it suitable for automotive-grade transient immunity design.
Technical Context
The P4KE250 operates as a silicon avalanche diode with precise Zener-like breakdown behavior under reverse-biased overvoltage conditions. Its unidirectional polarity enables asymmetric clamping - blocking forward conduction until VF ≈ 3.5V (per spec note for VBR ≤ 200V; P4KE250 uses VF = 6.5V max per note 4), while maintaining <1μA reverse leakage at 202V VWM.
It adheres to ANSI/IEEE C62.35 standards for transient suppression, with thermal derating defined up to TJ = 175°C and mechanical compliance to DO-204AL (DO-41) outline including UL 94V-0 molding and JESD201 Class 2 whisker resistance - enabling reliable mounting on FR-4 PCBs with standard reflow or hand-soldering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 202 V - Maximum continuous DC or RMS voltage the device blocks without significant leakage; defines safe operating margin below breakdown. |
| VBR @ IT=1mA | 225–275 V - Measured breakdown voltage range at 1mA test current; ensures predictable clamping onset across production lot. |
| VC @ IPPM=1.1A | ≤360 V - Clamped voltage during 10/1000μs surge; determines maximum stress imposed on protected downstream circuitry. |
| PPK | 400 W - Peak pulse power handling capability per standardized 10/1000μs waveform; validates robustness against IEC 61000-4-5 surges. |
| IR @ VWM | <1 μA - Reverse leakage current at rated stand-off voltage; minimizes standby power loss and avoids false triggering. |
| TJ max | +175 °C - Maximum junction temperature; supports operation in under-hood automotive or high-ambient industrial environments. |
| Package | DO-204AL (DO-41) - Industry-standard axial-leaded package with tin-plated leads; compatible with automated insertion and wave soldering. |
Pinout & Package
DO-204AL (DO-41) package: axial-leaded, glass-passivated silicon junction, cathode indicated by band marking. Leads are pure tin-plated and solderable per J-STD-002. Weight ≈ 0.300g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to system ground or return path; establishes reference for clamping action when cathode is at higher potential. |
| Cathode | Protected line input | Connected to line under protection (e.g., 24V rail input); conducts avalanche current to anode during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| 400W surge rating (10/1000μs) | Validates compliance with IEC 61000-4-5 Level 4 surge immunity requirements for industrial and automotive electronics. |
| Clamping voltage ≤360V at 1.1A | Ensures downstream ICs rated for ≤36 V absolute maximum survive transients up to 250V nominal system voltage. |
| Reverse leakage <1μA at 202V | Prevents excessive quiescent current in battery-backed or low-power systems where leakage could drain energy over time. |
| AEC-Q101 qualified variant available | P4KE250H meets stress-test requirements for automotive under-hood applications, including temperature cycling and HTRB. |
| UL Recognized (E326243) | Confirms flammability and safety compliance for end-equipment certification in North America and globally harmonized markets. |
Applications
| Industrial Power Input Protection | Automotive Body Control Module (BCM) Inputs |
|---|---|
Use Scenario: 24V/48V DC power entry point in programmable logic controllers exposed to load dump and inductive switching noise. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between input rail and chassis ground to clamp positive-going transients. Use Value: Limits voltage excursion to ≤360V during 400W surges, protecting upstream DC-DC controller ICs and MOSFET gate drivers. |
Use Scenario: LIN bus or sensor supply line in BCM subject to ISO 7637-2 Pulse 1, 2a, and 5a transients. IC Role / Device Role / Timing Role: Standoff protector on 12V sensor feed line; activated only during >202V excursions. Use Value: Maintains <1μA leakage at 12V nominal, avoiding interference with low-current sensor biasing while surviving 100V/50ms pulses. |
| LED Driver Output Stage Protection | Telecom DC Feeder Line Surge Suppression |
Use Scenario: Constant-current LED driver output feeding long cable runs susceptible to induced lightning surges. IC Role / Device Role / Timing Role: Unidirectional clamping device connected anode-to-ground, cathode-to-output, absorbing reverse-polarity transients. Use Value: Clamps 10/1000μs surges to ≤360V before they reach LED string or current-sense amplifier, preventing catastrophic failure. |
Use Scenario: -48V DC telecom feeder line entering remote radio head enclosures exposed to outdoor surge coupling. IC Role / Device Role / Timing Role: Primary overvoltage clamp on negative rail relative to ground, rated for continuous -48V operation. Use Value: Withstands 202V standoff and clamps 400W surges without degradation, meeting GR-1089-CORE Level 3 requirements. |
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 SMAJ250A | Same DO-214AC (SMA) package; 250V VBR, 360V VC, but lower 400W rating applies at 1.0A (vs. P4KE250's 1.1A); VF = 3.5V. | Surface-mount alternative requiring PCB redesign; better thermal performance in high-density layouts but no axial lead option. | Select SMAJ250A for SMT-based designs prioritizing board space; choose P4KE250 for through-hole reliability and legacy compatibility. |
| Vishay 1.5KE250A | Higher 1.5kW peak power rating, same 250V VBR and DO-201AD (DO-27) package; VC = 360V at 4.2A; larger footprint and higher cost. | Used where multi-kilowatt surge immunity is required (e.g., AC mains front-end), not optimized for compact DC rail protection. | Choose 1.5KE250A only if system-level testing requires >400W margin; P4KE250 provides optimal cost/performance balance for 400W-class DC protection. |
Compared with SMAJ250A and 1.5KE250A, the P4KE250 delivers identical clamping voltage and breakdown precision in a cost-effective DO-41 axial package - ideal for through-hole power input stages where layout flexibility and mechanical robustness outweigh SMT density or extreme power headroom.
Availability
P4KE250 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, LED driver outputs, and telecom DC feeder lines requiring stable component supply and long-term obsolescence management.
Supply support for P4KE250 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, serving global industrial, automotive, and consumer markets since 1979.
The P4KE series belongs to TSC's transient voltage suppressor product line, engineered specifically for cost-sensitive, high-reliability DC surge protection in harsh environments - emphasizing AEC-Q101 readiness, UL recognition, and tight parametric consistency.
FAQ
What is the maximum clamping voltage of the P4KE250 under standard surge conditions?
The P4KE250 clamps to a maximum of 360 V when subjected to a 10/1000 μs waveform with a peak pulse current of 1.1 A, as specified in the manufacturer's electrical characteristics table. This value is measured at TA = 25°C and defines the upper voltage limit imposed on protected circuitry during transient events. The P4KE250 maintains this clamping performance across its full operating temperature range, supporting robust design in demanding applications.
Is the P4KE250 suitable for automotive applications?
Yes - the P4KE250H variant is AEC-Q101 qualified and tested for automotive under-hood use, including temperature cycling, high-temperature reverse bias, and humidity testing. While the base P4KE250 is not automatically qualified, its construction, materials (UL 94V-0 molding, JESD201 Class 2 whisker resistance), and thermal rating (TJ max = +175°C) align with automotive environmental requirements. Always specify P4KE250H for certified automotive deployments.
What is the difference between P4KE250 and P4KE250A?
The P4KE250A offers tighter breakdown voltage tolerance: 237–263 V versus 225–275 V for the P4KE250, both tested at 1 mA. The P4KE250A also has a slightly higher working stand-off voltage (214 V vs. 202 V) and lower clamping voltage (344 V vs. 360 V at rated IPPM). These differences make the P4KE250A preferable in precision-critical circuits where tighter VBR distribution and lower VC improve system margin.
Can the P4KE250 be used in bidirectional configurations?
No - the P4KE250 is a unidirectional TVS diode intended for DC line protection with defined anode/cathode polarity. For bidirectional protection, select the P4KE250CA variant (if offered) or use back-to-back P4KE250 devices. The datasheet explicitly states that bipolar operation requires "C" or "CA" suffix parts; using a single P4KE250 in AC or symmetrical transient scenarios risks forward conduction damage during negative half-cycles.
What packaging options are available for the P4KE250?
The P4KE250 is supplied in DO-204AL (DO-41) package with two standard packing formats: 5,000 units per tape-and-reel (ordering code P4KE250) and 3,000 units per ammo box (ordering code P4KE250A0G). Lead finish is pure tin, compliant with RoHS and halogen-free standards per IEC 61249-2-21. No SMD variants exist for this specific part number.
P4KE250 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):
- 202V
- Voltage - Breakdown (Min):
- 225V
- Voltage - Clamping (Max) @ Ipp:
- 360V
- Current - Peak Pulse (10/1000µs):
- 1.1A
- 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)
P4KE250 FAQ
1.How can I place an order for P4KE250 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE250 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 P4KE250 reliable?
The price and inventory of P4KE250 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE250 is usually 5 days.
3.What payment methods are accepted for P4KE250?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE250 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE250?
P4KE250 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE250 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 P4KE250?
For technical support, including P4KE250 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE250 requirements.
6.How does Aetrix verify that P4KE250 is sourced from the original manufacturer or authorized distributors?
All P4KE250 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 P4KE250 meets industry standards.
7.What is the process for return or replacement of P4KE250?
All P4KE250 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE250, 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 P4KE250 part is unused and in its original packaging.
Return procedure for P4KE250:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE250 Tags
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