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Diodes Incorporated P6KE350CA-T
- Part No.:
- P6KE350CA-T
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE350CA-T.pdf
- Description:
- TVS DIODE 300VWM 482VC DO15
- Quantity:
- Payment:
- Shipping:
Inventory:3,485
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Product details
Overview
P6KE350CA-T from Diodes Incorporated is a bidirectional 600W transient voltage suppressor (TVS) diode designed for overvoltage protection in DC power lines and signal interfaces. It features a reverse standoff voltage of 300 V, breakdown voltage range of 332–368 V at 1 mA test current, clamping voltage of 482 V at 1.25 A peak pulse current, and DO-15 package with glass passivated junction - used in industrial power supply input stages to absorb lightning-induced surges.
For engineers reviewing the P6KE350CA-T datasheet, P6KE350CA-T pinout, P6KE350CA-T application, or P6KE350CA-T equivalent, key selection criteria include clamping voltage margin relative to system rail, unidirectional vs. bidirectional polarity requirements, 1.0 ms pulse waveform compliance, and DO-15 thermal derating above +25°C ambient.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, enabling protection of AC-coupled or floating signal paths without polarity biasing. Its glass-passivated die ensures stable breakdown characteristics and low leakage (<5 µA at VRWM) under long-term DC stress.
The device responds within <1.0 ns to transients, clamping 1.25 A (8/20 µs waveform) to ≤482 V while dissipating up to 600 W peak pulse power. Steady-state power dissipation is rated at 5.0 W at TL = +75°C with 9.5 mm lead length on 40 mm² copper land.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600 W - sustains single 1.0 ms non-repetitive surge without failure |
| Reverse Standoff Voltage (VRWM) | 300 V - maximum continuous DC or RMS voltage before significant leakage |
| Breakdown Voltage (VBR) | 332–368 V @ 1 mA - guaranteed conduction onset window for reliable clamping threshold |
| Clamping Voltage (VC) | 482 V @ IPP = 1.25 A - maximum voltage seen by protected circuit during specified surge |
| Peak Pulse Current (IPP) | 1.25 A (8/20 µs) - surge current level at which VC is measured and validated |
| Junction-to-Ambient RθJA | 75 °C/W - defines thermal rise per watt in standard PCB mounting; critical for sustained surge duty |
| Package | DO-15 - axial-leaded, UL 94V-0 molded plastic housing with 0.4 g mass and 25.4 mm body length |
Pinout & Package
DO-15 package: axial-leaded, glass-passivated silicon junction, cathode band not marked on bidirectional variant (P6KE350CA-T). Leads are tin-plated, solderable per MIL-STD-202 Method 208, with 9.5 mm lead length for thermal testing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional terminal pair | No polarity marking; either end serves as anode or cathode depending on transient polarity |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse rating | Enables robust protection against IEC 61000-4-5 Level 4 (4 kV/2 Ω) surges in industrial power inputs |
| Glass-passivated junction | Ensures stable VBR over temperature and lifetime, with <5 µA IR at VRWM up to +125°C |
| Bidirectional configuration | Protects AC lines, RS-485 buses, and transformer-coupled interfaces without external polarity management |
| DO-15 mechanical robustness | Withstands 100 A IFSM (8.3 ms half-sine), supporting high-energy fault clearing in mains-connected equipment |
Applications
| Industrial Power Input Protection | AC Line Surge Suppression |
|---|---|
Use Scenario: 24–48 V DC industrial PLC power entry subjected to indirect lightning surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Primary shunt TVS clamp limiting transient voltage to <482 V during 1.25 A surge events. Use Value: Prevents damage to downstream DC/DC converters and microcontroller power rails by clamping within safe operating margin of 300 V nominal input. |
Use Scenario: Secondary-side AC signal path in isolation transformers feeding analog sensor inputs. IC Role / Device Role / Timing Role: Bidirectional overvoltage limiter on floating, center-tapped AC lines. Use Value: Symmetric clamping avoids rectification artifacts and preserves signal integrity during ±482 V transients. |
| RS-485 Transceiver Protection | Metering Equipment Transient Guard |
Use Scenario: Data line protection for isolated RS-485 nodes in factory automation networks. IC Role / Device Role / Timing Role: Low-capacitance (≈50 pF) bidirectional TVS placed differential across A/B lines. Use Value: Clamps ESD and fast transients without distorting 10 Mbps data signals due to sub-nanosecond response and minimal parasitic loading. |
Use Scenario: Overvoltage guard on utility meter voltage sensing inputs exposed to grid switching transients. IC Role / Device Role / Timing Role: First-stage protector upstream of precision voltage dividers and ADC front-ends. Use Value: Limits transient energy to <600 W peak, preventing latch-up or burnout in high-impedance measurement circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ350CA-T3G | DO-214AA (SMB) package; lower RθJA (50 °C/W); same VRWM/VBR/VC specs | Better thermal performance in high-density layouts; requires SMT reflow, not through-hole | Select when board space is constrained and automated assembly is used |
| 1.5KE350CA | Higher peak power (1500 W); larger DO-201AD package; identical electrical specs | Supports higher-energy surges (e.g., direct lightning coupling) but occupies 3× PCB area | Select when system-level surge test levels exceed 600 W capability |
Compared with SMBJ350CA-T3G and 1.5KE350CA, P6KE350CA-T offers optimal balance of proven reliability in legacy through-hole designs, cost-effective DO-15 assembly, and sufficient 600 W rating for most industrial secondary-side protection - making it ideal for field-replaceable modules and serviceable equipment.
Availability
P6KE350CA-T is available at Aetrix Electronics and suitable for industrial power input protection, AC line surge suppression, RS-485 transceiver safeguarding, and utility metering equipment requiring stable component supply despite its obsolete status per Diodes' notice.
Supply support for P6KE350CA-T 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and the Americas.
P6KE350CA-T belongs to the P6KE series of 600 W axial-leaded TVS diodes, engineered specifically for cost-sensitive, high-volume industrial and automotive auxiliary systems requiring standardized through-hole overvoltage protection.
FAQ
Is P6KE350CA-T still in active production?
No - Diodes Incorporated has officially discontinued the P6KE350CA-T and entire P6KE series as of August 2024 (DS21502 Rev. 20-4). Aetrix Electronics maintains limited legacy stock with full traceability and provides last-time-buy support, including batch documentation and RoHS compliance verification per original spec.
What is the meaning of the "C" suffix in P6KE350CA-T?
The "C" suffix denotes bidirectional construction: P6KE350CA-T clamps symmetrically for both positive and negative transients, unlike unidirectional P6KE350A-T which only conducts in one polarity. No cathode band is marked on CA variants, confirming its bidirectional nature per Diodes' datasheet Note 4.
Can P6KE350CA-T be used in place of P6KE350A-T?
No - they are not interchangeable. P6KE350A-T is unidirectional and requires correct cathode orientation; P6KE350CA-T is bidirectional with no polarity marking. Substituting one for the other risks failed clamping on reverse-polarity surges or unintended conduction in DC-biased circuits.
What is the maximum allowable ambient temperature for continuous operation?
The device supports operation from –55°C to +175°C junction temperature. At TA = +25°C, steady-state power dissipation is 5.0 W with 9.5 mm leads on 40 mm² copper. Derating follows Fig. 5: power drops linearly to zero at TL = +200°C, and Fig. 4 shows 50% peak power allowed at TA = +125°C.
P6KE350CA-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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):
- 1.25A
- Power - Peak Pulse:
- 600W
- 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-15
P6KE350CA-T FAQ
1.How can I place an order for P6KE350CA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE350CA-T 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 P6KE350CA-T reliable?
The price and inventory of P6KE350CA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE350CA-T is usually 5 days.
3.What payment methods are accepted for P6KE350CA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE350CA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE350CA-T?
P6KE350CA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE350CA-T 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 P6KE350CA-T?
For technical support, including P6KE350CA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE350CA-T requirements.
6.How does Aetrix verify that P6KE350CA-T is sourced from the original manufacturer or authorized distributors?
All P6KE350CA-T 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 P6KE350CA-T meets industry standards.
7.What is the process for return or replacement of P6KE350CA-T?
All P6KE350CA-T units undergo pre-shipment inspection (PSI). If there is an issue with P6KE350CA-T, 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 P6KE350CA-T part is unused and in its original packaging.
Return procedure for P6KE350CA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE350CA-T Tags
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ESD9B5.0ST5G
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Diodes Incorporated
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