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Taiwan Semiconductor Corporation P4KE350C
- Part No.:
- P4KE350C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE350C.pdf
- Description:
- 400W, 350V, BIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:8,552
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Product details
Overview
P4KE350C from Taiwan Semiconductor is a bidirectional transient voltage suppressor (TVS) diode designed for high-energy surge protection in power and signal lines. It features a 350V nominal standoff voltage, 315–385V breakdown range at 1mA test current, 504V maximum clamping voltage at 0.83A peak pulse current, and 400W peak pulse power rating per 10/1000μs waveform - deployed in automotive lighting control, industrial PLC I/O protection, and AC/DC power supply input stages.
For engineers reviewing the P4KE350C datasheet, P4KE350C pinout, P4KE350C application, or P4KE350C equivalent, key selection criteria include its bidirectional DO-41 package, low leakage (<1μA at 284V), fast 5ns response time, AEC-Q101 qualification option (P4KE350CH), and compatibility with IEC 61000-4-5 Level 4 surge immunity requirements.
Technical Context
The P4KE350C operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1GΩ) below 284V working stand-off voltage; during transients exceeding 315V, it avalanches rapidly to clamp energy within 5ns and divert up to 0.83A peak pulse current away from downstream circuitry. Its bidirectional symmetry ensures identical VBR and VC characteristics in both polarities.
Thermal design relies on its DO-204AL (DO-41) package with 175°C max junction temperature, 0.3g mass, and UL 94V-0 molding compound - enabling operation across -55°C to +175°C ambient without derating when mounted on 5×5mm copper pads. The device exhibits a +0.110%/°C VBR temperature coefficient and meets JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Voltage | 350V - defines rated system operating voltage threshold before clamping activation |
| Breakdown Voltage VBR | 315–385V @ 1mA - verified avalanche onset range ensuring reliable turn-on above 284V working voltage |
| Clamping Voltage VC | 504V @ 0.83A - maximum voltage seen by protected circuit during full 400W surge event |
| Peak Pulse Power | 400W @ 10/1000μs - sustains IEEE C62.35-compliant surge stress without failure |
| Leakage Current ID | <1μA @ 284V - negligible standby power loss and minimal signal distortion in high-impedance circuits |
| Response Time | 5.0ns - enables effective suppression of EFT bursts and fast-rising lightning-induced transients |
| Junction Temperature | -55°C to +175°C - supports under-hood automotive, industrial motor drive, and outdoor power electronics use |
Pinout & Package
Package: DO-204AL (DO-41), axial-leaded, glass-passivated, RoHS- and halogen-free compliant; cathode band marking omitted for bidirectional configuration (P4KE350C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (reversible) | Bidirectional avalanche junction | Identical clamping behavior in either polarity - no orientation required during PCB placement |
| Lead 1 / Lead 2 | Current path terminals | Tin-plated, solderable per J-STD-002; supports wave/reflow; 0.300g mass aids thermal inertia |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified variant available | P4KE350CH meets automotive-grade reliability testing for engine control and lighting modules |
| Low clamping ratio | VC/VBR = 504/315 ≈ 1.6 - tight voltage margin preserves safe operating area for 350V-rated MOSFETs and controllers |
| UL recognition | File #E-326243 - validates safety compliance for end-equipment certification in North America |
| Fast transient response | 5.0ns turn-on - captures sub-microsecond ESD/EFT events before IC latch-up or gate oxide damage occurs |
| High surge robustness | 400W peak power with <1μA leakage - enables long-life protection in mains-connected industrial sensors and AC adapters |
Applications
| Automotive LED Headlamp Driver | Industrial PLC Analog Input Module |
|---|---|
Use Scenario: Protects LED driver ICs and MOSFETs from load-dump spikes (ISO 7637-2 Pulse 5a) and alternator ripple surges. IC Role / Device Role / Timing Role: Shunt TVS placed across DC bus input to clamp transients before they reach switching controller and gate drivers. Use Value: Withstands 400W surges while maintaining <1μA leakage at 284V, preventing false triggering and preserving driver efficiency. |
Use Scenario: Shields 4–20mA analog input front-end from field-wiring induced surges and EFT coupling in factory automation cabinets. IC Role / Device Role / Timing Role: Bidirectional clamping element across differential input pins to suppress common-mode transients without polarity constraints. Use Value: 5ns response ensures protection against 5kHz EFT bursts (IEC 61000-4-4), and 504V clamping prevents ADC overvoltage saturation. |
| AC/DC Power Supply Input Stage | Smart Meter Communication Interface |
Use Scenario: Safeguards bridge rectifier and primary-side controller from lightning-induced surges on 230VAC mains input. IC Role / Device Role / Timing Role: Primary-line TVS connected between L-N and L/N-PE to absorb differential and common-mode surges per IEC 61000-4-5. Use Value: 350V nominal rating aligns with 230VAC RMS × √2 ≈ 325V peak, allowing margin for line tolerance and transient overshoot. |
Use Scenario: Guards RS-485 transceivers and microcontroller UART lines against ESD and induced surges in utility meter data concentrators. IC Role / Device Role / Timing Role: Bidirectional TVS on differential bus lines (A/B) to clamp ±15kV contact ESD (IEC 61000-4-2) without signal distortion. Use Value: Low capacitance (<50pF typical at 0V) avoids signal integrity degradation at 100kbps+ data rates. |
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 SMAJ350A | Unidirectional; 350V VWM; 504V VC @ 0.83A; SMA package (surface-mount) | Requires polarity-aware layout; better suited for space-constrained PCBs with automated assembly | Select when board real estate is limited and unidirectional protection suffices |
| ON Semiconductor 1.5KE350C | Same DO-41 package; 350V nominal; 504V VC; but 1.5kW peak power rating (1.5KE series) | Higher surge capacity allows single-device coverage for harsher environments (e.g., railway traction power) | Select when legacy 1.5KE footprint compatibility or >400W surge margin is required |
Compared with P4KE350C, SMAJ350A offers surface-mount convenience but lacks bidirectionality and AEC-Q101 variants, while 1.5KE350C provides higher surge headroom in the same through-hole form factor - making P4KE350C optimal for cost-sensitive, bidirectional, automotive-qualified designs where 400W is sufficient.
Availability
P4KE350C is available at Aetrix Electronics and suitable for automotive lighting systems, industrial PLC I/O protection, and AC/DC power supply input stages requiring stable component supply, long-lifecycle support, and AEC-Q101 traceability.
Supply support for P4KE350C 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 - serving automotive, industrial, and consumer markets since 1979.
The P4KE series belongs to TSC's high-reliability transient suppression product line, engineered specifically for robust surge immunity in harsh environments including automotive powertrain, industrial motor controls, and smart grid infrastructure.
FAQ
What is the polarity configuration of P4KE350C?
The P4KE350C is a bidirectional TVS diode, meaning it functions identically in both forward and reverse bias - no cathode marking is present, and PCB orientation is non-critical. This distinguishes it from unidirectional variants like P4KE350A and enables simplified layout in AC-coupled or differential signal paths where polarity reversal may occur.
Does P4KE350C meet AEC-Q101 qualification?
The base P4KE350C is not AEC-Q101 qualified; however, the variant P4KE350CH (with "H" suffix) is explicitly certified to AEC-Q101 for automotive applications. This qualification covers stress tests including HTGB, HTRB, TCT, and ESD - confirming suitability for under-hood and lighting control modules where reliability is mission-critical.
What is the maximum clamping voltage of P4KE350C under surge conditions?
The P4KE350C has a maximum clamping voltage (VC) of 504V at 0.83A peak pulse current under the standard 10/1000μs waveform. This value is guaranteed across the full operating temperature range (-55°C to +175°C) and defines the upper voltage limit imposed on protected circuitry during worst-case surge events.
How does P4KE350C compare to P4KE350A?
P4KE350C is bidirectional with symmetrical VBR and VC in both directions, while P4KE350A is unidirectional and includes a cathode band. Their electrical specs (VWM = 284V, VBR = 315–385V, VC = 504V) are identical, but P4KE350C eliminates polarity concerns in AC or floating applications - making it preferred for RS-485 buses, transformer-coupled interfaces, and dual-supply protection.
What packaging options are available for P4KE350C?
P4KE350C is supplied in DO-204AL (DO-41) package with two standard packing formats: 5,000 units per tape-and-reel (P4KE350CH for AEC-Q101 version) and 3,000 units per ammo box (P4KE350CHA0G). Lead finish is pure tin, compliant with J-STD-002 for reliable solderability in both wave and reflow processes.
P4KE350C 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):
- 284V
- Voltage - Breakdown (Min):
- 315V
- Voltage - Clamping (Max) @ Ipp:
- 504V
- Current - Peak Pulse (10/1000µs):
- 830mA
- 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)
P4KE350C FAQ
1.How can I place an order for P4KE350C through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE350C 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 P4KE350C reliable?
The price and inventory of P4KE350C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE350C is usually 5 days.
3.What payment methods are accepted for P4KE350C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE350C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE350C?
P4KE350C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE350C 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 P4KE350C?
For technical support, including P4KE350C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE350C requirements.
6.How does Aetrix verify that P4KE350C is sourced from the original manufacturer or authorized distributors?
All P4KE350C 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 P4KE350C meets industry standards.
7.What is the process for return or replacement of P4KE350C?
All P4KE350C units undergo pre-shipment inspection (PSI). If there is an issue with P4KE350C, 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 P4KE350C part is unused and in its original packaging.
Return procedure for P4KE350C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE350C Tags
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