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Diodes Incorporated P6KE300A-T
- Part No.:
- P6KE300A-T
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE300A-T.pdf
- Description:
- TVS DIODE 256VWM 414VC DO15
- Quantity:
- Payment:
- Shipping:
Inventory:8,876
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Product details
Overview
P6KE300A-T from Diodes Incorporated is a unidirectional 600W transient voltage suppressor (TVS) diode designed for overvoltage protection in DC power lines and signal interfaces. It features a 256V reverse standoff voltage (VRWM), 285V minimum breakdown voltage (VBR), 414V maximum clamping voltage (VC) at 1.45A peak pulse current, and DO-15 package with glass-passivated junction - deployed in industrial power supplies and telecom line cards.
For engineers reviewing the P6KE300A-T datasheet, P6KE300A-T pinout, P6KE300A-T application, or P6KE300A-T equivalent, key selection criteria include clamping voltage margin relative to protected IC VDD rails, 1.0ms 600W pulse handling capability, unidirectional polarity for DC-biased circuits, and RoHS-compliant lead-free plating for automated assembly.
Technical Context
This TVS operates as a voltage-clamped shunt protector: under normal conditions it presents <5.0µA leakage at 256V; during transients exceeding 285V, it avalanches rapidly (<1ns response) to clamp voltage at ≤414V. Its glass-passivated die ensures stable VBR tolerance (±5%) and long-term reliability under repetitive surge stress.
The device is rated for 100A non-repetitive forward surge (8.3ms half-sine) and derates linearly above +25°C ambient, maintaining 5.0W steady-state dissipation at TL=+75°C on 40mm² copper land. Thermal resistance from junction to ambient is 75°C/W, confirming suitability for through-hole mounted board-level protection without forced airflow.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600W (1.0ms 10/1000µs waveform; defines maximum single-event surge energy absorption) |
| Reverse Standoff Voltage | 256V (maximum continuous DC or RMS voltage before significant leakage; sets operating rail ceiling) |
| Breakdown Voltage | 285V min / 315V max @ 1.0mA (avalanche initiation threshold; determines clamping onset precision) |
| Clamping Voltage | 414V max @ 1.45A IPP (voltage seen by protected circuit during worst-case surge; critical for IC survival) |
| Package | DO-15 (axial-leaded, 0.4g weight, UL 94V-0 molded plastic; compatible with wave soldering and manual repair) |
| Leakage Current | ≤5.0µA @ 256V (ensures negligible standby power loss and no false triggering in high-impedance nodes) |
| Surge Rating | 100A @ 8.3ms half-sine (validates robustness against lightning-induced AC line surges per IEC 61000-4-5) |
Pinout & Package
DO-15 axial package: cathode indicated by band; anode and cathode terminals are axially oriented with 9.5mm lead length standard. Leads are tin-plated, solderable per MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during reverse-biased clamping | Connected to protected line; conducts surge current to ground when VRWM exceeded |
| Cathode | Current exit point during clamping; marked with band | Connected to system ground or low-impedance return path; defines unidirectional polarity |
Key Features
| Feature | Design Value |
|---|---|
| 600W peak pulse rating | Enables protection against high-energy transients (e.g., IEC 61000-4-5 Level 4) without thermal runaway |
| Glass-passivated junction | Ensures ±5% VBR tolerance and stable leakage performance across -55°C to +175°C operating range |
| RoHS-compliant lead finish | Supports lead-free reflow and wave soldering processes without wetting or dewetting defects |
| Fast response time | <1ns avalanche turn-on guarantees clamping before sensitive downstream ICs experience overvoltage stress |
| UL 94V-0 flammability rating | Molded plastic housing prevents flame propagation during catastrophic failure events |
Applications
| Industrial Power Supply Protection | Telecom Line Card Surge Suppression |
|---|---|
|
Use Scenario: 24–48V DC input stage of programmable logic controller (PLC) power module exposed to load dump and inductive switching noise. IC Role / Device Role / Timing Role: Shunt TVS diode placed between input rail and chassis ground to clamp fast-rising transients before they reach DC-DC converter ICs. Use Value: 414V clamping voltage provides >20% margin above 330V max input rating of typical isolated flyback controllers, preventing latch-up or gate oxide damage. |
Use Scenario: Primary-side protection on -48V telecom distribution board handling ESD and lightning-induced surges on central office feeder lines. IC Role / Device Role / Timing Role: Unidirectional TVS connected anode-to-line, cathode-to-ground to absorb negative-going transients while blocking normal -48V bias. Use Value: 256V VRWM allows safe operation with -48V nominal plus 20% tolerance and ripple, while 600W rating handles multi-kV induced surges per GR-1089-CORE. |
| Automotive Body Control Module Input | Medical Equipment AC/DC Adapter Interface |
|
Use Scenario: 12V battery-fed input of BCM microcontroller subsystem subject to ISO 7637-2 Pulse 1 (inductive load dump) and Pulse 2a (alternator load dump). IC Role / Device Role / Timing Role: Front-end TVS on main power rail to limit transient voltage seen by LDO regulators and CAN transceivers. Use Value: 100A 8.3ms surge rating meets ISO 7637-2 Pulse 5a requirements; DO-15 mechanical robustness supports vibration-prone under-hood mounting. |
Use Scenario: Secondary-side output of medical-grade AC/DC adapter supplying isolated 5V/12V rails to patient-monitoring sensors and analog front-ends. IC Role / Device Role / Timing Role: Final-stage TVS on low-voltage DC output to prevent ESD coupling into sensitive analog signal chains during connector mating. Use Value: ≤5.0µA leakage avoids loading precision voltage references; 1.45A IPP rating covers human-body-model (HBM) and IEC 61000-4-2 contact discharge 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 |
|---|---|---|---|
| SMBJ300A-T | Same VRWM (256V) and VC (414V), but SMB package (surface-mount); 600W rating; lower thermal resistance (RθJA = 40°C/W) | Requires PCB redesign for SMT placement; better suited for space-constrained, high-density boards with automated assembly | Select when footprint miniaturization and thermal performance outweigh through-hole serviceability needs |
| P6KE300CA-T | Bidirectional variant: identical VRWM (256V), VBR, VC, and power rating; symmetrical clamping for AC-coupled or floating lines | Used where line polarity is undefined or bidirectional signals (e.g., RS-485, CAN bus) require symmetric surge protection | Select only if protecting AC or differential signaling paths; unidirectional P6KE300A-T is optimal for fixed-polarity DC rails |
Compared with SMBJ300A-T, P6KE300A-T offers easier manual rework and higher mechanical retention in high-vibration environments; compared with P6KE300CA-T, it delivers tighter leakage control and lower capacitance for DC-biased applications where reverse conduction must be blocked.
Availability
P6KE300A-T is available at Aetrix Electronics and suitable for industrial power supply protection, telecom line card surge suppression, and automotive body control module input requiring stable component supply despite its obsolete status per Diodes' notice.
Supply support for P6KE300A-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 North America.
The P6KE series belongs to Diodes' transient voltage suppressor portfolio, engineered specifically for high-energy, low-leakage overvoltage protection in industrial, telecom, and automotive power systems where reliability under surge stress is critical.
FAQ
Is P6KE300A-T still in active production?
No - Diodes Incorporated has officially discontinued the P6KE300A-T, marking it as obsolete in DS21502 Rev. 20-4 (August 2024). However, Aetrix Electronics maintains legacy inventory with full traceability and supports last-time buys for ongoing production programs requiring exact form-fit-function replacement.
What is the difference between P6KE300A-T and P6KE300CA-T?
P6KE300A-T is unidirectional (cathode-banded), conducting only during reverse overvoltage events; P6KE300CA-T is bidirectional, clamping both polarities equally. Their electrical specs (VRWM, VBR, VC, IPP) are identical, but the bidirectional version lacks polarity marking and exhibits symmetrical leakage behavior.
Can P6KE300A-T be used in place of P6KE270A-T?
No - P6KE300A-T has 256V VRWM and 414V clamping, whereas P6KE270A-T has 231V VRWM and 375V clamping. Substituting requires verifying that the protected circuit's maximum operating voltage and IC absolute maximum ratings accommodate the 25V higher standoff and 39V higher clamping of the P6KE300A-T.
What is the maximum allowable ambient temperature for continuous operation?
The P6KE300A-T operates from -55°C to +175°C junction temperature. At +25°C ambient, its steady-state power dissipation is 5.0W when mounted on 40mm² copper; derating follows Fig. 5 - at +75°C ambient, maximum PD drops to ~2.5W due to RθJA = 75°C/W and thermal saturation limits.
P6KE300A-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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 256V
- Voltage - Breakdown (Min):
- 285V
- Voltage - Clamping (Max) @ Ipp:
- 414V
- Current - Peak Pulse (10/1000µs):
- 1.45A
- 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
P6KE300A-T FAQ
1.How can I place an order for P6KE300A-T through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE300A-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 P6KE300A-T reliable?
The price and inventory of P6KE300A-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE300A-T is usually 5 days.
3.What payment methods are accepted for P6KE300A-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE300A-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE300A-T?
P6KE300A-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE300A-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 P6KE300A-T?
For technical support, including P6KE300A-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE300A-T requirements.
6.How does Aetrix verify that P6KE300A-T is sourced from the original manufacturer or authorized distributors?
All P6KE300A-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 P6KE300A-T meets industry standards.
7.What is the process for return or replacement of P6KE300A-T?
All P6KE300A-T units undergo pre-shipment inspection (PSI). If there is an issue with P6KE300A-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 P6KE300A-T part is unused and in its original packaging.
Return procedure for P6KE300A-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE300A-T Tags
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