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Taiwan Semiconductor Corporation P4KE250CA
- Part No.:
- P4KE250CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE250CA.pdf
- Description:
- TVS DIODE 214VWM 344VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:8,854
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Product details
Overview
P4KE250CA from Taiwan Semiconductor is a bidirectional transient voltage suppressor (TVS) diode designed for high-energy surge protection in DC power rails and signal lines. It features a 250V nominal standoff voltage, 225–275V breakdown range at 1mA test current, 202V working peak reverse voltage, and clamps transients to ≤360V at 1.1A peak pulse current under 10/1000μs waveform - suitable for industrial power supply input stage protection.
For engineers reviewing the P4KE250CA datasheet, P4KE250CA pinout, P4KE250CA application, or P4KE250CA equivalent, key selection criteria include bidirectional clamping capability, DO-41 package compatibility, AEC-Q101 qualification option (H-suffix), low leakage (<1μA @ 202V), and thermal stability up to +175°C junction temperature.
Technical Context
The P4KE250CA operates as a silicon avalanche diode with symmetrical bidirectional clamping behavior - identical electrical characteristics in both polarities due to its center-tapped construction. Its 400W peak pulse power rating at 10/1000μs waveform enables robust immunity against IEC 61000-4-5 Level 4 surges.
With a typical response time of <5ns and junction capacitance <100pF at 0V (per family data), it provides fast transient suppression without distorting high-speed signals. The device maintains stable VBR over temperature with a +0.110%/°C coefficient and supports continuous operation from –55°C to +175°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Voltage | 250V - defines rated system voltage level where clamping begins |
| Breakdown Voltage VBR | 225–275V @ 1mA - ensures reliable avalanche conduction onset within specified tolerance |
| Working Peak Reverse Voltage VWM | 202V - maximum continuous DC or RMS voltage the device blocks without leakage exceeding 1μA |
| Peak Pulse Power PPK | 400W @ 10/1000μs - sustains single high-energy surges common in industrial AC/DC inputs |
| Clamping Voltage VC | ≤360V @ 1.1A - limits downstream voltage stress during surge events to protect downstream ICs |
| Junction Temperature Range | –55°C to +175°C - supports operation in harsh environments including automotive under-hood and industrial motor drives |
| Package | DO-204AL (DO-41) - industry-standard axial leaded package compatible with through-hole assembly and manual repair |
Pinout & Package
DO-204AL (DO-41) package: axial-leaded, glass-passivated silicon junction, cathode band not marked on bidirectional variants (P4KExxxCA). Leads are pure tin-plated, solderable per J-STD-002, with 0.300g mass and UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction | No polarity marking required; terminals interchangeable for AC or bipolar DC protection |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM in both directions - eliminates need for orientation-aware layout in AC-coupled or floating systems |
| AEC-Q101 qualified option | H-suffix variant available - validated for automotive powertrain and body electronics requiring reliability certification |
| Low leakage current | <1μA @ 202V - minimizes standby power loss in battery-backed or energy-sensitive applications |
| Fast transient response | <5ns response time - captures sub-microsecond EFT bursts before sensitive circuitry is exposed |
| High surge robustness | 400W peak pulse power - withstands repeated 1kV/500A IEC 61000-4-5 Combination Wave surges |
Applications
| Industrial Power Supply Input Protection | Automotive Body Control Module (BCM) Power Rail |
|---|---|
Use Scenario: 24V/48V DC input stage of programmable logic controllers exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Primary surge shunt element placed upstream of DC-DC converters and microcontrollers. Use Value: Clamps 100V transients to ≤360V within 5ns, preventing latch-up or gate oxide damage in downstream PMICs and MCUs. |
Use Scenario: 12V battery rail in BCM modules subject to jump-start surges and alternator load dump per ISO 16750-2. IC Role / Device Role / Timing Role: Bidirectional overvoltage clamp across main power input before LDO regulators and CAN transceivers. Use Value: Maintains <1μA leakage at 13.5V nominal, avoiding battery drain while surviving 35V/100ms load dump events. |
| AC-DC Adapter Secondary-Side Surge Suppression | Smart Lighting Driver ESD Protection |
Use Scenario: Output rectifier stage of offline flyback adapters powering IoT gateways, subjected to conducted surges via mains coupling. IC Role / Device Role / Timing Role: Parallel-connected TVS across output capacitor to limit transient overshoot into USB-PD or PoE interface ICs. Use Value: 202V VWM allows safe operation at 24VDC output while clamping 1kV ring waves to <360V. |
Use Scenario: LED driver PCBs in outdoor streetlights exposed to lightning-induced surges on 230VAC input and DALI control lines. IC Role / Device Role / Timing Role: Bidirectional protection on DALI bus lines and AC input bridge outputs. Use Value: Symmetrical clamping prevents polarity-dependent failure; DO-41 package enables manual rework during field repair. |
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 SMAJ250CA | Same 250V nominal, DO-214AC (SMA) surface-mount package; 400W rating; slightly higher VC (371V @ 1.1A) | Requires SMT reflow process; unsuitable for through-hole legacy designs or manual repair | Select when board space is constrained and automated assembly is used. |
| ON Semiconductor 1.5KE250CA | Same DO-204AL (DO-41) package and 250V rating; 1500W peak power; higher VC (413V @ 3.6A); larger physical size | Higher surge capacity but greater clamping voltage - may exceed downstream IC absolute max ratings | Select only when legacy 1.5KE footprint compatibility is required and clamping margin permits. |
Compared with SMAJ250CA and 1.5KE250CA, the P4KE250CA offers optimal balance of through-hole manufacturability, precise 360V clamping ceiling, and thermal robustness in compact DO-41 form - making it preferred for cost-sensitive industrial controls and retrofit designs.
Availability
P4KE250CA is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, AC-DC adapters, and smart lighting systems requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P4KE250CA 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, MOSFETs, and power management devices.
The P4KE series belongs to TSC's high-reliability transient suppression portfolio, engineered specifically for industrial-grade surge immunity in harsh environments - emphasizing thermal stability, low leakage, and AEC-Q101 qualification readiness.
FAQ
What is the clamping voltage of P4KE250CA at its rated peak pulse current?
The P4KE250CA clamps to a maximum of 360V at 1.1A peak pulse current under the standard 10/1000μs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees predictable voltage limiting during surge events, protecting downstream components such as DC-DC controllers and microcontrollers from overvoltage stress.
Is P4KE250CA unidirectional or bidirectional, and how is polarity indicated?
P4KE250CA is a bidirectional TVS diode - its electrical characteristics are identical in both directions, and no cathode band or polarity marking is present on the DO-41 package. This symmetry enables use in AC circuits, floating grounds, or any application where voltage transients may occur with either polarity, eliminating orientation concerns during placement.
Does P4KE250CA meet automotive qualification standards?
The base P4KE250CA is not AEC-Q101 qualified; however, the P4KE250CAH variant (with 'H' suffix) is fully AEC-Q101 certified for automotive applications. Engineers specifying P4KE250CA for automotive use must select the H-suffix version and verify compliance documentation from Taiwan Semiconductor's official product change notices.
What is the maximum operating temperature for P4KE250CA?
P4KE250CA has a maximum junction temperature (TJ) of +175°C and a storage temperature range of –55°C to +175°C. This wide thermal envelope supports deployment in high-ambient environments such as motor drive enclosures, industrial inverters, and under-hood automotive modules without derating in most configurations.
How does P4KE250CA compare to P4KE250A in terms of voltage tolerance?
P4KE250CA has a breakdown voltage range of 225–275V at 1mA, while P4KE250A (unidirectional) shares the same VBR range but adds a cathode band marking and forward voltage specification (VF = 6.5V max). The 'CA' suffix confirms bidirectional symmetry; 'A' denotes ±5% tolerance grade - both share identical VWM (202V) and VC (360V) values.
P4KE250CA 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):
- 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)
P4KE250CA FAQ
1.How can I place an order for P4KE250CA through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE250CA 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 P4KE250CA reliable?
The price and inventory of P4KE250CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE250CA is usually 5 days.
3.What payment methods are accepted for P4KE250CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE250CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE250CA?
P4KE250CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE250CA 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 P4KE250CA?
For technical support, including P4KE250CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE250CA requirements.
6.How does Aetrix verify that P4KE250CA is sourced from the original manufacturer or authorized distributors?
All P4KE250CA 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 P4KE250CA meets industry standards.
7.What is the process for return or replacement of P4KE250CA?
All P4KE250CA units undergo pre-shipment inspection (PSI). If there is an issue with P4KE250CA, 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 P4KE250CA part is unused and in its original packaging.
Return procedure for P4KE250CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE250CA Tags
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