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Diodes Incorporated P6KE47A-T
- Part No.:
- P6KE47A-T
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE47A-T.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC DO15
- Quantity:
- Payment:
- Shipping:
Inventory:2,907
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Product details
Overview
P6KE47A-T from Diodes Incorporated is a unidirectional 600W transient voltage suppressor (TVS) diode designed for primary overvoltage protection in DC power rails and signal lines. It features a 40.2V reverse standoff voltage (VRWM), 44.7V minimum breakdown voltage (VBR), 64.8V maximum clamping voltage (VC) at 9.3A peak pulse current, and DO-15 package construction-used in industrial power supplies, automotive ECUs, and telecom interface protection.
For engineers reviewing the P6KE47A-T datasheet, P6KE47A-T pinout, P6KE47A-T application, or P6KE47A-T equivalent, key selection criteria include clamping performance under 10/1000µs surge, thermal derating above +25°C ambient, unidirectional polarity marking, and compatibility with lead-free reflow profiles per J-STD-020 Level 1.
Technical Context
The P6KE47A-T operates as a silicon avalanche diode that enters controlled breakdown when transient voltage exceeds its VRWM, diverting surge energy to ground while limiting downstream voltage to ≤64.8V. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<5µA @ 40.2V).
It delivers 600W peak pulse power (1.0ms, non-repetitive) with fast response time (<1.0ps), enabling protection against IEC 61000-4-5 Level 4 surges. Thermal resistance is characterized as RθJA = 75°C/W (free-air) and RθJL = 15°C/W (to lead), supporting reliable operation up to TJ = +175°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600W - sustains single 1.0ms 10/1000µs surge without failure |
| Reverse Standoff Voltage (VRWM) | 40.2V - maximum continuous DC operating voltage before clamping initiates |
| Breakdown Voltage (VBR) | 44.7V min @ 1.0mA - precise avalanche onset threshold for predictable clamping |
| Clamping Voltage (VC) | 64.8V max @ 9.3A IPP - limits protected circuit voltage during worst-case surge |
| Leakage Current (IR) | <5µA @ 40.2V - negligible standby power loss and minimal loading on source |
| Package | DO-15 - axial-leaded, UL 94V-0 molded plastic housing for through-hole mounting |
| Operating Temperature | –55°C to +175°C - qualified for under-hood automotive and industrial environments |
Pinout & Package
DO-15 package: axial-leaded, glass-passivated silicon die in molded plastic body (UL 94V-0), 0.4g mass, 9.5mm lead length for thermal derating. Cathode indicated by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Surge return path (ground side) | Connected to system ground or low-impedance return to complete clamping loop |
| Cathode | Protected line input | Marked with band; connects to line being protected (e.g., +12V rail or RS-485 A/B) |
Key Features
| Feature | Design Value |
|---|---|
| 600W Peak Pulse Power | Enables robust protection against IEC 61000-4-5 4kV surge events without degradation |
| Glass Passivated Junction | Ensures long-term VBR stability and reduced parameter drift across temperature and life cycles |
| Unidirectional Polarity | Provides DC rail protection with cathode-to-line configuration, avoiding reverse-bias conduction in normal operation |
| RoHS & Lead-Free Compliant | Meets EU Directive 2011/65/EU; compatible with Pb-free reflow soldering (J-STD-020 Level 1) |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: 24V DC input stage of programmable logic controller (PLC) power supply exposed to load dump and inductive switching transients. IC Role / Device Role / Timing Role: Primary TVS clamp placed upstream of DC-DC converter input to limit voltage excursion to <65V during 10/1000µs surges. Use Value: Prevents MOSFET gate oxide rupture and input capacitor overvoltage failure under ISO 16750-2 Pulse 5a (load dump) conditions. | Use Scenario: LIN bus transceiver power rail in door module subjected to battery connection/disconnection spikes. IC Role / Device Role / Timing Role: Unidirectional TVS on VCC line between fuse and transceiver IC to clamp transients before they reach sensitive analog front-end. Use Value: Maintains LIN communication integrity by holding rail voltage within 64.8V clamping limit during 100V/100ms battery disconnect events. |
| Telecom Interface Surge Protection | Medical Equipment Input Stage |
Use Scenario: RS-485 data line termination in outdoor base station equipment facing lightning-induced surges. IC Role / Device Role / Timing Role: Paired unidirectional TVS devices (one per line) referenced to local ground, absorbing common-mode surge energy. Use Value: Limits differential and common-mode voltages to safe levels for ADM3485-level transceivers, preserving ±7V common-mode range. | Use Scenario: AC/DC adapter secondary-side output feeding isolated patient-monitoring sensor board. IC Role / Device Role / Timing Role: Final-stage TVS on regulated 5V output to suppress ESD and fast transients entering via external connectors. Use Value: Guarantees <5µA leakage at 40.2V, preventing false triggering of low-power sleep modes in battery-backed monitoring circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43A-T | Lower peak power (600W same), but SMB package (surface-mount); clamping voltage 69.4V @ 8.7A | Requires PCB redesign for SMT layout; better thermal coupling to copper but no axial lead for manual repair | Select for automated assembly and space-constrained boards where DO-15 footprint is unavailable |
| P6KE47CA-T | Bidirectional version; identical VRWM/VBR/VC specs but symmetric clamping for AC or floating lines | Used where line polarity is undefined (e.g., Ethernet transformer center taps, audio lines) | Choose only if bidirectional clamping is required; not interchangeable in unidirectional DC rail designs |
Compared with SMBJ43A-T and P6KE47CA-T, P6KE47A-T offers proven axial-leaded reliability for high-surge industrial repairs and maintains tighter VBR tolerance (±5% vs ±10% typical for SMBJ series), making it preferred for legacy through-hole systems requiring field serviceability and exact voltage margin control.
Availability
P6KE47A-T is available at Aetrix Electronics and suitable for industrial power supplies, automotive electronic control units, and telecom interface protection requiring stable component supply and long-lifecycle support despite its obsolete status.
Supply support for P6KE47A-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 surge immunity in harsh-environment applications including automotive, industrial automation, and infrastructure equipment.
FAQ
Is P6KE47A-T still in active production?
No-P6KE47A-T is officially marked obsolete per Diodes Incorporated's DS21502 Rev. 20-4 (August 2024). However, Aetrix Electronics maintains legacy inventory and supports last-time buys, cross-reference validation, and extended lifecycle sourcing for customers dependent on this DO-15 TVS device.
What is the maximum clamping voltage at rated peak pulse current?
The maximum clamping voltage (VC) for P6KE47A-T is 64.8V at 9.3A peak pulse current (IPP), measured under standard 10/1000µs waveform conditions per IEC 61000-4-5. This value is guaranteed across the full operating temperature range (–55°C to +175°C) and defines the absolute upper voltage seen by downstream components during surge events.
Can P6KE47A-T be used in bidirectional signal lines?
No-P6KE47A-T is unidirectional and must be connected with cathode toward the protected line and anode to ground. For bidirectional applications such as AC-coupled interfaces or transformer-coupled data lines, use the bidirectional variant P6KE47CA-T, which clamps symmetrically for both polarities.
How does thermal derating affect steady-state power handling?
At TA = +25°C, P6KE47A-T supports 5.0W steady-state dissipation when mounted on 40mm² copper land with 9.5mm leads. Derating follows a linear curve: power drops to zero at +175°C ambient. At +100°C ambient, allowable PD is ~2.5W-critical for enclosed industrial enclosures where airflow is limited and sustained overvoltage conditions may occur.
P6KE47A-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):
- 40.2V
- Voltage - Breakdown (Min):
- 44.7V
- Voltage - Clamping (Max) @ Ipp:
- 64.8V
- Current - Peak Pulse (10/1000µs):
- 9.3A
- 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
P6KE47A-T FAQ
1.How can I place an order for P6KE47A-T through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE47A-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 P6KE47A-T reliable?
The price and inventory of P6KE47A-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE47A-T is usually 5 days.
3.What payment methods are accepted for P6KE47A-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE47A-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE47A-T?
P6KE47A-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE47A-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 P6KE47A-T?
For technical support, including P6KE47A-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE47A-T requirements.
6.How does Aetrix verify that P6KE47A-T is sourced from the original manufacturer or authorized distributors?
All P6KE47A-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 P6KE47A-T meets industry standards.
7.What is the process for return or replacement of P6KE47A-T?
All P6KE47A-T units undergo pre-shipment inspection (PSI). If there is an issue with P6KE47A-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 P6KE47A-T part is unused and in its original packaging.
Return procedure for P6KE47A-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE47A-T Tags
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Diodes Incorporated
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