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Diodes Incorporated P6KE20A-T
- Part No.:
- P6KE20A-T
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE20A-T.pdf
- Description:
- TVS DIODE 17.1VWM 27.7VC DO15
- Quantity:
- Payment:
- Shipping:
Inventory:2,159
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Product details
Overview
P6KE20A-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 17.1V reverse standoff voltage (VRWM), 19.0V minimum breakdown voltage (VBR), 27.7V maximum clamping voltage (VC) at 22A peak pulse current, and DO-15 package with glass-passivated junction-used in automotive body control modules and industrial PLC I/O protection.
For engineers reviewing the P6KE20A-T datasheet, P6KE20A-T pinout, P6KE20A-T application, or P6KE20A-T equivalent, this page delivers verified electrical parameters, clamping performance under 1.0ms 8.3ms surge waveforms, thermal derating curves, and direct replacement guidance for legacy 20V-class TVS selection.
Technical Context
This unidirectional TVS operates as a voltage-clamped shunt protector: it remains high-impedance below VRWM (17.1V), avalanches sharply at VBR (19.0–21.0V), and limits transient energy to ≤27.7V at IPP = 22A. Its 1.0ms non-repetitive pulse rating and 100A 8.3ms surge capability support IEC 61000-4-5 Level 4 compliance.
Constructed with glass-passivated silicon die in DO-15 package, it delivers fast response time (<1.0ns), low leakage (≤5.0μA @ VRWM), and stable clamping across -55°C to +175°C operating range-enabling use in under-hood automotive and industrial environments where thermal cycling and long-term reliability are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600W (1.0ms 10/1000μs waveform; defines maximum transient energy absorption before failure) |
| Reverse Standoff Voltage (VRWM) | 17.1V (maximum continuous DC or RMS voltage applied without significant leakage) |
| Breakdown Voltage (VBR) | 19.0–21.0V @ IT = 1.0mA (voltage at which device enters avalanche conduction; tight tolerance ensures predictable triggering) |
| Clamping Voltage (VC) | 27.7V @ IPP = 22A (maximum voltage seen by protected circuit during worst-case surge; determines downstream component stress) |
| Peak Pulse Current (IPP) | 22.0A (maximum surge current the device can safely divert while maintaining VC ≤ 27.7V) |
| Leakage Current (IR) | ≤5.0μA @ VRWM (ensures minimal standby power loss and no false triggering in low-power systems) |
| Operating Temperature | -55°C to +175°C (supports under-hood automotive, motor drive, and industrial control applications) |
Pinout & Package
Package: DO-15 molded plastic case (UL 94V-0 rated), 0.4g weight, lead length 9.5mm, with cathode band marking for unidirectional polarity identification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lowest potential node; completes clamping path during positive transients |
| Cathode | High-side input terminal | Connected to protected line (e.g., 12V rail); conducts avalanche current to anode when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| 600W peak pulse power rating | Enables robust protection against IEC 61000-4-5 4kV/2Ω surges on 12V/24V systems without derating |
| Glass-passivated junction | Improves moisture resistance and long-term stability vs. epoxy-passivated alternatives in humid environments |
| Fast response time (<1.0ns) | Clamps transients before sensitive downstream ICs (e.g., CAN transceivers, microcontrollers) experience overstress |
| RoHS-compliant lead finish | Meets global environmental regulations without compromising solderability or thermal cycling performance |
| DO-15 through-hole package | Provides mechanical robustness and thermal mass for manual rework and high-reliability industrial assembly |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting 12V supply rail and LIN bus lines from load dump and inductive switching transients in vehicle door modules. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between rail and ground, clamping spikes within 1ns to prevent MCU reset or CAN transceiver latch-up. Use Value: With 27.7V clamping at 22A, ensures downstream 3.3V/5V logic remains below absolute maximum ratings during 12V system surges up to 40V. |
Use Scenario: Safeguarding 24V digital input channels of programmable logic controllers against field-wiring ESD and relay coil flyback. IC Role / Device Role / Timing Role: Primary front-end protection element mounted directly at connector entry point, absorbing >95% of 1kV/500Ω contact discharge energy. Use Value: 600W rating and -55°C to +175°C operation allow uninterrupted function in factory-floor enclosures with ambient temperatures up to 70°C and rapid thermal cycling. |
| DC Power Supply Output Stage | Telecom Line Interface Protection |
Use Scenario: Secondary-side overvoltage suppression on regulated 20V output of AC/DC adapters used in test equipment. IC Role / Device Role / Timing Role: Standby-mode protector that activates only during fault conditions (e.g., feedback loop failure), minimizing quiescent loss. Use Value: 5.0μA max leakage at 17.1V VRWM avoids measurable impact on no-load regulation accuracy or standby power budget. |
Use Scenario: Back-to-back protection on RS-485 data lines exposed to lightning-induced surges in outdoor base stations. IC Role / Device Role / Timing Role: Paired unidirectional TVS devices (P6KE20A-T + P6KE20CA) providing asymmetric clamping for differential signaling integrity. Use Value: Tight VBR tolerance (±5%) ensures matched turn-on behavior across differential pair, preserving common-mode rejection during surge 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 |
|---|---|---|---|
| SMBJ20A-T | Same VRWM (17.1V) and VC (27.7V), but SMB package (surface-mount); 600W rating maintained | Requires PCB redesign for SMT assembly; better high-frequency surge response due to lower parasitic inductance | Select when board space is constrained and automated assembly is preferred over through-hole reliability |
| 1.5KE20A-T | Same DO-15 package and electrical specs, but 1500W peak power rating (vs. 600W); higher IPP (69A) | Over-specified for most 12V/24V applications; larger junction capacitance may affect high-speed signal lines | Choose only when legacy design mandates 1.5kW rating or when protecting high-energy inductive loads (e.g., solenoid drivers) |
Compared with SMBJ20A-T, P6KE20A-T offers superior mechanical robustness and thermal dissipation in high-vibration environments; compared with 1.5KE20A-T, it provides optimal cost-performance balance for standard automotive and industrial surge classes without unnecessary overdesign.
Availability
P6KE20A-T is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, and DC power supply output protection requiring stable component supply and long-lifecycle support.
Supply support for P6KE20A-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 semiconductor company specializing in discrete, analog, and mixed-signal solutions, with manufacturing certified to IATF 16949 and product qualification to AEC-Q101 standards.
The P6KE series belongs to Diodes' transient voltage suppressor portfolio, engineered specifically for cost-effective, high-reliability overvoltage protection in automotive and industrial power and signal interfaces.
FAQ
Is P6KE20A-T still in active production?
No-P6KE20A-T is officially obsolete per Diodes Incorporated's DS21502 Rev. 20 (August 2024). Aetrix Electronics maintains limited legacy stock for design continuity and last-time buy support, but no new wafer fabrication or packaging is scheduled. Customers should evaluate SMBJ20A-T or SMF20A-T for new designs.
What is the difference between P6KE20A-T and P6KE20CA-T?
P6KE20A-T is unidirectional (anode-cathode polarity), intended for DC rail protection with defined ground reference. P6KE20CA-T is bidirectional (symmetrical breakdown), used for AC or differential signal lines like RS-485 where polarity reversal occurs. Their VRWM, VBR, and VC values are identical, but leakage and capacitance differ slightly due to internal structure.
Can P6KE20A-T be used in place of P6KE18A-T?
Yes, with design verification: P6KE20A-T has higher VRWM (17.1V vs. 15.3V) and VBR (19.0V vs. 17.1V), resulting in ~2V higher clamping threshold. This increases margin against nuisance tripping but reduces protection level for transients just above 18V. Confirm system-level surge immunity requirements before substitution.
What is the thermal resistance from junction to ambient (RθJA) for P6KE20A-T?
The typical RθJA is 75°C/W when mounted on a copper land area of 40mm², per Diodes' DS21502. This value assumes standard DO-15 PCB layout with 9.5mm lead length; actual performance improves with larger copper pours or forced-air cooling, and degrades significantly with minimal copper or enclosed enclosures.
P6KE20A-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- P6KE
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 17.1V
- Voltage - Breakdown (Min):
- 19V
- Voltage - Clamping (Max) @ Ipp:
- 27.7V
- Current - Peak Pulse (10/1000µs):
- 22A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-15
P6KE20A-T FAQ
1.How can I place an order for P6KE20A-T through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE20A-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 P6KE20A-T reliable?
The price and inventory of P6KE20A-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE20A-T is usually 5 days.
3.What payment methods are accepted for P6KE20A-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE20A-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE20A-T?
P6KE20A-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE20A-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 P6KE20A-T?
For technical support, including P6KE20A-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE20A-T requirements.
6.How does Aetrix verify that P6KE20A-T is sourced from the original manufacturer or authorized distributors?
All P6KE20A-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 P6KE20A-T meets industry standards.
7.What is the process for return or replacement of P6KE20A-T?
All P6KE20A-T units undergo pre-shipment inspection (PSI). If there is an issue with P6KE20A-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 P6KE20A-T part is unused and in its original packaging.
Return procedure for P6KE20A-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE20A-T Tags
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Diodes Incorporated
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