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Taiwan Semiconductor Corporation P4KE350CA
- Part No.:
- P4KE350CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE350CA.pdf
- Description:
- TVS DIODE 300VWM 482VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:2,808
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Product details
Overview
P4KE350CA from Taiwan Semiconductor is a bidirectional transient voltage suppressor (TVS) diode designed for high-energy surge protection in DC power lines and signal interfaces. It features a 350V nominal standoff voltage, 504V maximum clamping voltage at 0.83A peak pulse current, 400W peak pulse power rating at 10/1000μs waveform, and DO-204AL (DO-41) axial package - deployed in automotive power supply rail protection and industrial I/O port ESD hardening.
For engineers reviewing the P4KE350CA datasheet, P4KE350CA pinout, P4KE350CA application, or P4KE350CA equivalent, key selection criteria include bidirectional clamping symmetry, low leakage (<1μA at 284V), AEC-Q101 qualification (H-suffix variant), and compatibility with 10/1000μs surge immunity standards per IEC 61000-4-5.
Technical Context
The P4KE350CA operates as a voltage-clamped avalanche diode with symmetrical breakdown in both polarities (VBR min/max = 315V/385V at 1mA), enabling robust protection against reverse- and forward-polarity transients without polarity-sensitive placement. Its 0.11%/°C VBR temperature coefficient ensures stable clamping across -55°C to +175°C junction range.
It delivers 400W non-repetitive surge capability per ANSI/IEEE C62.35-defined 10/1000μs waveform, with fast response time (<5ns from 0V to VBR) and low dynamic impedance - critical for limiting induced overvoltage on sensitive downstream circuitry during lightning-induced or inductive-switching events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Voltage | 350V - defines rated working stand-off level before avalanche conduction begins |
| Breakdown Voltage (VBR) | 315–385V @ 1mA - ensures reliable turn-on within ±10% tolerance under standardized test conditions |
| Working Stand-off Voltage (VWM) | 284V - maximum continuous reverse voltage the device blocks without significant leakage |
| Maximum Clamping Voltage (VC) | 504V @ 0.83A - peak voltage seen by protected circuit during full-rated 400W surge event |
| Peak Pulse Power (PPK) | 400W - energy-handling capacity at 10/1000μs waveform, derated above 25°C ambient |
| Junction Temperature Range | -55°C to +175°C - supports operation in under-hood automotive and industrial environments |
| Package | DO-204AL (DO-41) - axial-leaded, UL 94V-0 molded case with tin-plated leads per J-STD-002 |
Pinout & Package
DO-204AL (DO-41) axial package with unmarked cathode band - bidirectional construction means both terminals are electrically symmetric; no polarity marking required. Leads are pure tin-plated, solderable, and compliant with JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional avalanche junction | Either terminal serves as anode or cathode depending on transient polarity - enables single-device protection of AC or floating DC lines |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified (H-suffix) | Validated for automotive powertrain and body electronics per stress test requirements including HTOL, TCT, and ESD HBM/MM |
| 400W surge rating at 10/1000μs | Meets IEC 61000-4-5 Level 4 (4kV) surge immunity when properly mounted with low-inductance layout |
| Clamping voltage ≤504V @ 0.83A | Limits voltage overshoot to safe levels for 300–350V-rated MOSFETs, gate drivers, and isolated DC/DC controllers |
| Reverse leakage <1μA @ 284V | Minimizes standby power loss and avoids false triggering in high-impedance sensing circuits |
| Fast response time <5ns | Engages before transient energy couples into IC input structures - critical for protecting CAN, LIN, and RS-485 transceivers |
Applications
| Automotive Power Rail Protection | Industrial I/O Port ESD Hardening |
|---|---|
Use Scenario: 12V/24V battery line in engine control units exposed to load dump and jump-start surges. IC Role / Device Role / Timing Role: Bidirectional TVS clamping device placed upstream of DC/DC converter input. Use Value: Limits transient voltage to ≤504V, preventing damage to 60V-rated buck controller ICs and maintaining system uptime during ISO 16750-2 tests. |
Use Scenario: RS-485 communication port on PLC module subjected to contact ESD per IEC 61000-4-2 ±8kV. IC Role / Device Role / Timing Role: Primary-level surge absorber on differential bus lines (A/B) and common-mode ground path. Use Value: Clamps ESD-induced common-mode spikes within 5ns, preserving signal integrity and avoiding latch-up in isolated transceivers. |
| Lighting System Surge Suppression | Renewable Energy DC Link Protection |
Use Scenario: LED driver input in streetlight fixture encountering lightning-induced surges on long outdoor wiring. IC Role / Device Role / Timing Role: First-stage protector on AC-DC rectified output before bulk capacitor and PWM controller. Use Value: Absorbs 400W 10/1000μs surges without degradation, extending capacitor life and eliminating field failures from grid transients. |
Use Scenario: DC link between solar inverter MPPT stage and H-bridge, subject to switching transients and grid fault coupling. IC Role / Device Role / Timing Role: Overvoltage clamp across DC+ and DC− rails to protect IGBT gate drivers and current sensors. Use Value: Maintains clamping voltage below 550V threshold of 650V IGBT modules, preventing destructive overvoltage during rapid dV/dt events. |
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 SMAJ350CA | Same DO-214AC (SMA) package; 504V VC @ 0.83A; 400W rating; RoHS/halogen-free; no AEC-Q101 option | Surface-mount only - requires PCB redesign vs. through-hole P4KE350CA; better thermal dissipation in compact layouts | Select SMAJ350CA for space-constrained SMT designs where reflow compatibility and lower profile are prioritized over through-hole serviceability. |
| Vishay 1.5KE350CA | Same DO-201AE (DO-15) package; identical 350V/504V/400W specs; AEC-Q101 qualified (1.5KE350CAH); higher IPPM (0.87A) | Larger DO-15 body (5.6mm Ø vs. DO-41's 2.7mm Ø); higher thermal mass but less board density; same axial mounting | Choose 1.5KE350CA for higher surge margin in high-reliability industrial systems where mechanical robustness and legacy DO-15 footprint compatibility matter. |
Compared with SMAJ350CA and 1.5KE350CA, P4KE350CA offers the smallest axial package (DO-41), lowest weight (0.3g), and direct AEC-Q101 availability in its form factor - making it optimal for cost-sensitive, weight-critical automotive modules where through-hole assembly remains standard.
Availability
P4KE350CA is available at Aetrix Electronics and suitable for automotive power rail protection, industrial I/O port hardening, lighting system surge suppression, and renewable energy DC link protection requiring stable component supply across multi-year production cycles.
Supply support for P4KE350CA 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 power management, protection, and interface devices since 1979.
The P4KE series belongs to TSC's high-reliability TVS portfolio engineered specifically for automotive-grade transient immunity and industrial surge resilience - emphasizing AEC-Q101 compliance, wide temperature operation, and repeatable clamping performance.
FAQ
What is the maximum clamping voltage of the P4KE350CA under full-rated surge conditions?
The P4KE350CA has a maximum clamping voltage (VC) of 504V at 0.83A peak pulse current, measured under the standardized 10/1000μs waveform. This value is guaranteed per the datasheet's electrical characteristics table and defines the upper voltage limit imposed on protected circuitry during a 400W transient event. The P4KE350CA maintains this clamping performance across its full operating temperature range.
Is the P4KE350CA suitable for automotive applications requiring AEC-Q101 qualification?
Yes - the P4KE350CA is available in an AEC-Q101-qualified version denoted by the "H" suffix (e.g., P4KE350CAH). This variant undergoes rigorous stress testing including high-temperature operating life, temperature cycling, and ESD qualification per AEC-Q101 Rev D. The base P4KE350CA part itself is not automatically qualified; only the H-suffix variant meets automotive reliability requirements. Always verify ordering code suffix when selecting for automotive use.
How does the bidirectional configuration of the P4KE350CA affect its placement in circuit design?
The P4KE350CA's bidirectional structure eliminates polarity sensitivity - either lead can connect to either side of a differential line or floating node. This simplifies layout for AC-coupled signals, transformer-isolated interfaces, or dual-rail DC buses where transient polarity is unpredictable. Unlike unidirectional TVS diodes, the P4KE350CA requires no cathode band orientation check during assembly, reducing manufacturing error risk and supporting automated placement without orientation sensors.
What is the reverse leakage current specification for the P4KE350CA at its working stand-off voltage?
The P4KE350CA exhibits a maximum reverse leakage current (ID) of 1μA at its working stand-off voltage (VWM) of 284V, measured at 25°C. This ultra-low leakage minimizes power loss in high-impedance bias networks and prevents false triggering in precision analog front-ends. Leakage remains below 5μA up to 125°C junction temperature, ensuring stable performance in thermally demanding environments.
Can the P4KE350CA be used in parallel to increase surge current handling?
No - the P4KE350CA is not recommended for parallel connection due to inherent VBR mismatch between units, which causes uneven current sharing and potential thermal runaway. Even matched lots exhibit ±5% VBR variation, leading to one device absorbing >80% of the surge. For higher current handling, select a single higher-rated device (e.g., 1.5KE350CA) or implement external current-sharing resistors - though the latter degrades clamping performance and is not advised for critical protection paths.
P4KE350CA 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):
- 300V
- Voltage - Breakdown (Min):
- 332V
- Voltage - Clamping (Max) @ Ipp:
- 482V
- Current - Peak Pulse (10/1000µs):
- 870mA
- 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)
P4KE350CA FAQ
1.How can I place an order for P4KE350CA through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE350CA 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 P4KE350CA reliable?
The price and inventory of P4KE350CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE350CA is usually 5 days.
3.What payment methods are accepted for P4KE350CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE350CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE350CA?
P4KE350CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE350CA 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 P4KE350CA?
For technical support, including P4KE350CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE350CA requirements.
6.How does Aetrix verify that P4KE350CA is sourced from the original manufacturer or authorized distributors?
All P4KE350CA 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 P4KE350CA meets industry standards.
7.What is the process for return or replacement of P4KE350CA?
All P4KE350CA units undergo pre-shipment inspection (PSI). If there is an issue with P4KE350CA, 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 P4KE350CA part is unused and in its original packaging.
Return procedure for P4KE350CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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