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Taiwan Semiconductor Corporation P6KE18AH
- Part No.:
- P6KE18AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE18AH.pdf
- Description:
- TVS DIODE 15.3VWM 25.5VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,778
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Product details
Overview
P6KE18AH from Taiwan Semiconductor is a unidirectional 600W transient voltage suppressor (TVS) diode designed for primary-level overvoltage protection in DC power rails and signal lines. It features a 18V nominal breakdown voltage (VBR min/max = 17.1V/18.9V), 15.3V stand-off voltage (VWM), clamps to ≤25.2V at 25A peak surge current, and uses DO-204AC (DO-15) package for board-level ESD and lightning surge immunity in automotive power modules.
For engineers reviewing the P6KE18AH datasheet, P6KE18AH pinout, P6KE18AH application, or P6KE18AH equivalent, key selection criteria include its AEC-Q101 qualification, 1.0ps response time from 0V to VBR, <1μA reverse leakage above 10V, and compatibility with 10/1000μs surge waveforms per IEC 61000-4-5.
Technical Context
This unidirectional TVS diode operates as a voltage-clamping device that remains high-impedance below VWM (15.3V) and transitions rapidly to low-impedance conduction above VBR (17.1–18.9V) to shunt transients. Its junction capacitance is not specified in the provided documentation, and it lacks integrated bidirectional symmetry - polarity is marked via cathode band.
The device sustains 600W non-repetitive peak pulse power under 10/1000μs waveform, derates linearly above 25°C ambient, and supports steady-state dissipation of 5W at 75°C with 9.5mm lead length. It is rated for junction temperatures from –55°C to +175°C and meets UL 94V-0 flammability and JESD201 Class 2 whisker resistance standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 15.3 V - Maximum continuous reverse voltage before significant leakage; defines safe operating DC rail margin. |
| VBR (Breakdown Voltage) | 17.1–18.9 V at 1 mA - Confirmed voltage range where device enters avalanche conduction; ensures predictable clamping onset. |
| VC @ IPP (Clamping Voltage) | 25.2 V at 25 A - Maximum voltage seen by protected circuit during 10/1000μs surge; critical for downstream IC survival. |
| PPK (Peak Pulse Power) | 600 W - Surge energy handling capability per single 10/1000μs event; validates compliance with IEC 61000-4-5 Level 4. |
| IR @ VWM (Reverse Leakage) | <1 μA - Negligible standby current draw at rated stand-off; avoids battery drain or signal distortion in low-power systems. |
| Response Time | <1.0 ps - Time from 0 V to VBR under fast-rising transients; enables protection against ESD events per IEC 61000-4-2. |
| Package | DO-204AC (DO-15) - Industry-standard axial-leaded package with tin-plated leads; compatible with wave and reflow soldering per J-STD-002. |
Pinout & Package
DO-204AC (DO-15) package: axial-leaded, molded epoxy case with cathode band marking for unidirectional polarity. Leads are pure tin-plated, compliant with J-STD-002 solderability, and meet JESD201 Class 2 whisker resistance. Weight ≈ 0.400 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to system ground or lowest potential node; completes clamping path during positive transients on cathode side. |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., 12V rail); conducts avalanche current to anode when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive underhood applications including engine control units and body electronics. |
| 600W 10/1000μs surge rating | Meets IEC 61000-4-5 surge immunity requirements for industrial and automotive power inputs. |
| Clamping voltage ≤25.2V at 25A | Ensures protected 15V-rated components (e.g., MCU IO, CAN transceivers) remain within absolute maximum ratings during surge. |
| Ultra-fast response <1.0ps | Provides effective ESD protection per IEC 61000-4-2 Level 4 (±15 kV contact) without signal degradation. |
| UL Recognized (E326243) | Confirms safety compliance for end-equipment certification in North America and globally harmonized markets. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: 12V battery-fed ECUs exposed to load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Primary clamping element placed upstream of LDOs and microcontrollers to limit transient overvoltage. Use Value: Clamps to 25.2V during 600W surges, preventing latch-up or gate oxide damage in downstream 3.3V/5V logic. |
Use Scenario: 4–20mA current loop transmitters interfacing with PLC analog inputs in factory automation. IC Role / Device Role / Timing Role: Bidirectional protection is not required; unidirectional P6KE18AH guards against accidental reverse polarity and inductive kickback. Use Value: Withstands 100A IFSM surge (8.3ms half-sine), enabling robust protection without fuse coordination issues. |
| LED Driver Input Stage | USB-C Power Delivery Line |
|
Use Scenario: Constant-current LED drivers powered from 24V DC supply subject to switching noise and cable discharge events. IC Role / Device Role / Timing Role: Standoff voltage (15.3V) provides margin above nominal 24V rail while allowing headroom for ripple. Use Value: Low dynamic impedance ensures stable clamping across temperature (–55°C to +175°C), maintaining reliability in outdoor lighting enclosures. |
Use Scenario: USB-C PD source port protecting buck-boost controller and communication PHY from hot-plug transients. IC Role / Device Role / Timing Role: Positioned between connector and PD controller IC to clamp VBUS overshoot during plug insertion. Use Value: Sub-1ps response captures nanosecond-scale ESD events before they propagate into silicon, reducing need for secondary filtering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ18A | Same 18V nominal, but SMB package (surface-mount); 600W rating, slightly higher VC (29.2V @ 21.2A). | Requires PCB redesign for SMD layout; better suited for space-constrained consumer electronics vs. through-hole automotive harnesses. | Select SMBJ18A only if board real estate is constrained and reflow assembly is available. |
| 1.5KE18A | Same DO-15 package and 18V rating, but 1500W rating (1.5kW); higher IPP (83.3A), larger thermal mass. | Over-spec'd for most 600W use cases; may cause unnecessary cost and board area penalty unless legacy 1.5kW design reuse is required. | Choose 1.5KE18A only when legacy 1.5kW surge test compliance (e.g., MIL-STD-1275) is mandated. |
Compared with SMBJ18A and 1.5KE18A, P6KE18AH offers optimal balance of AEC-Q101 qualification, DO-15 through-hole reliability, and precise 600W surge matching - making it ideal for new automotive and industrial designs where qualification, serviceability, and cost alignment matter.
Availability
P6KE18AH is available at Aetrix Electronics and suitable for automotive power modules, industrial sensor interfaces, LED driver inputs, and USB-C PD protection requiring stable component supply and long-term lifecycle support.
Supply support for P6KE18AH 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 for automotive, industrial, and consumer markets.
The P6KE series was developed specifically for AEC-Q101-compliant transient protection in harsh-environment DC power systems - emphasizing robustness, repeatable clamping, and high-temperature operation up to 175°C junction.
FAQ
What is the AEC-Q101 status of P6KE18AH?
P6KE18AH is explicitly AEC-Q101 qualified per the ordering code suffix "H", as confirmed in the manufacturer's ordering information table. This qualification covers stress testing for temperature cycling, humidity bias, mechanical shock, and high-temperature operating life - validating its suitability for automotive underhood applications. The P6KE18AH datasheet revision P2203 documents full AEC-Q101 compliance, excluding earlier variants like P6KE6V8A through P6KE9V1A.
Does P6KE18AH support bidirectional transient suppression?
No, P6KE18AH is a unidirectional TVS diode, indicated by its "H" suffix and absence of "CA" or "C" designation. It protects against positive transients on the cathode side relative to anode ground. For bidirectional protection, engineers must select a P6KE18AH-equivalent part with "CA" suffix (e.g., P6KE18AHA), which is not the same device and has different VBR symmetry and clamping behavior.
What is the maximum clamping voltage of P6KE18AH at rated surge current?
The maximum clamping voltage (VC) of P6KE18AH is 25.2 V at 25 A peak pulse current (IPP), measured under the standard 10/1000μs double-exponential waveform. This value is guaranteed across the full operating temperature range and is critical for ensuring protected circuits - such as 3.3V or 5V logic supplies - remain within their absolute maximum voltage ratings during surge events.
How does P6KE18AH compare to P6KE18A in terms of electrical performance?
P6KE18AH and P6KE18A share identical electrical specifications - including VBR (17.1–18.9 V), VWM (15.3 V), VC (25.2 V), and PPK (600 W) - but differ in qualification: only P6KE18AH carries AEC-Q101 certification. The "H" suffix denotes automotive-grade screening and traceability, while P6KE18A is intended for commercial/industrial use. Both use DO-204AC packaging and have identical pinout and thermal characteristics.
Is P6KE18AH compatible with lead-free reflow soldering processes?
Yes, P6KE18AH features pure tin-plated leads compliant with J-STD-002 for solderability, and its DO-204AC (DO-15) package is rated for standard lead-free reflow profiles (peak temperature ≤260°C). The epoxy molding compound meets UL 94V-0 flammability and is halogen-free per IEC 61249-2-21, supporting RoHS-compliant manufacturing without requiring special thermal profiling beyond IPC/JEDEC J-STD-020 guidelines.
P6KE18AH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- P6KE
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 15.3V
- Voltage - Breakdown (Min):
- 17.1V
- Voltage - Clamping (Max) @ Ipp:
- 25.5V
- Current - Peak Pulse (10/1000µs):
- 25A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
P6KE18AH FAQ
1.How can I place an order for P6KE18AH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE18AH 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 P6KE18AH reliable?
The price and inventory of P6KE18AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE18AH is usually 5 days.
3.What payment methods are accepted for P6KE18AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE18AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE18AH?
P6KE18AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE18AH 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 P6KE18AH?
For technical support, including P6KE18AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE18AH requirements.
6.How does Aetrix verify that P6KE18AH is sourced from the original manufacturer or authorized distributors?
All P6KE18AH 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 P6KE18AH meets industry standards.
7.What is the process for return or replacement of P6KE18AH?
All P6KE18AH units undergo pre-shipment inspection (PSI). If there is an issue with P6KE18AH, 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 P6KE18AH part is unused and in its original packaging.
Return procedure for P6KE18AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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