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Taiwan Semiconductor Corporation P6KE18H
- Part No.:
- P6KE18H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE18H.pdf
- Description:
- 600W, 18V, UNIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:7,030
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Product details
Overview
P6KE18H from Taiwan Semiconductor is a unidirectional 600W transient voltage suppressor (TVS) diode designed for primary-level overvoltage protection in automotive and industrial power rails. It features a 18V nominal breakdown voltage (VBR min/max: 16.2V–19.8V), 14.5V stand-off voltage (VWM), clamps to ≤26.5V at 23A peak surge current, and operates within -55°C to +175°C junction temperature range. It is AEC-Q101 qualified and housed in DO-204AC (DO-15) package.
For engineers reviewing the P6KE18H datasheet, P6KE18H pinout, P6KE18H application, or P6KE18H equivalent, key selection criteria include its 600W 10/1000μs surge rating, low dynamic impedance, sub-1ps response time from 0V to VBR, <1μA reverse leakage above 10V, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
The P6KE18H employs a silicon avalanche diode structure optimized for fast clamping of high-energy transients. Its unidirectional configuration provides forward conduction capability while suppressing reverse polarity surges up to 600W with a 10/1000μs waveform. The device exhibits low dynamic impedance to minimize voltage overshoot during surge events.
Designed for placement across DC power inputs or signal lines subject to ESD, EFT, and inductive switching spikes, it operates with a 1mA test current (IT) and maintains stable VBR with a temperature coefficient of 0.088%/°C. Its DO-204AC package supports lead-free soldering per J-STD-002 and meets UL 94V-0 flammability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Voltage | 18V - defines rated clamping threshold under standard test conditions |
| Breakdown Voltage (VBR) | 16.2V–19.8V at 1mA - ensures reliable avalanche initiation within specified tolerance band |
| Stand-Off Voltage (VWM) | 14.5V - maximum continuous reverse voltage before significant leakage begins |
| Peak Pulse Power (PPK) | 600W at 10/1000μs - sustains high-energy transients without failure |
| Clamping Voltage (VC) | ≤26.5V at 23A IPP - limits protected circuit voltage during worst-case surge |
| Junction Temperature Range | -55°C to +175°C - enables operation in under-hood automotive and industrial environments |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress test requirements |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, epoxy-molded case with cathode band marking. Meets UL 94V-0 flammability; pure tin-plated leads compliant with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path / low-impedance return during surge | Connected to system ground or lower-potential rail in unidirectional configuration |
| Cathode | Avalanche clamping node / high-side transient sink | Connected to protected line (e.g., 12V rail); cathode band identifies polarity |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control, body electronics, and ADAS power domains |
| 600W peak pulse power | Withstands ISO 7637-2 Pulse 1, 2a, 3a/b, and IEC 61000-4-5 surge waveforms without degradation |
| Fast response time | Typically <1.0ps from 0V to VBR - prevents voltage overshoot before clamping engages |
| Low dynamic impedance | Enables tight clamping window (VC – VBR ≈ 8.3V) to protect downstream ICs with low absolute maximum ratings |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green manufacturing |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12V battery-supplied ECUs exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed between battery input and LDO/regulator input. Use Value: Limits transient voltage to ≤26.5V, preventing damage to 30V-rated input stages of PMICs and microcontrollers. |
Use Scenario: 24V analog sensor outputs routed through long cables in factory automation. IC Role / Device Role / Timing Role: Bidirectional protection (via P6KE18CA variant) or unidirectional clamp on signal return path. Use Value: Suppresses EFT bursts (IEC 61000-4-4) and inductive kickback from solenoid drivers without signal distortion. |
| LED Driver Input Protection | Power Supply Input Stage Clamp |
Use Scenario: Constant-current LED drivers powered from 12V/24V supplies in outdoor lighting. IC Role / Device Role / Timing Role: Front-end TVS on DC input before buck controller and gate driver. Use Value: Absorbs 600W surges from lightning-induced coupling or nearby relay switching, preserving MOSFET gate oxide integrity. |
Use Scenario: AC/DC adapter secondary-side output feeding isolated DC-DC converters. IC Role / Device Role / Timing Role: Secondary-side clamping element across regulated 12V or 24V output bus. Use Value: Prevents overvoltage propagation to downstream logic during output short-circuit recovery or transformer saturation events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ18A | 600W rating, DO-214AA package, 18V nominal, bidirectional variant available | Surface-mount footprint; higher thermal resistance than axial DO-15 in free-air | Select when PCB space constraints require SMD layout or automated assembly compatibility |
| 1.5KE18A | Same DO-204AC package, 1500W rating, higher clamping voltage (27.7V @ 54.3A) | Higher surge capacity but larger voltage overshoot during clamping | Select when legacy 1.5kW surge immunity (e.g., MIL-STD-1275) is required and board layout allows same axial footprint |
Compared with P6KE18H, SMBJ18A offers SMT compatibility at the cost of reduced thermal performance in non-heatsinked environments, while 1.5KE18A delivers higher surge margin but sacrifices clamping tightness-making P6KE18H optimal for AEC-Q101-compliant 12V systems where voltage headroom is constrained.
Availability
P6KE18H is available at Aetrix Electronics and suitable for automotive electronics, industrial power supplies, and LED lighting systems requiring stable component supply with AEC-Q101 validation and long-term lifecycle support.
Supply support for P6KE18H 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 belongs to TSC's AEC-Q101-qualified transient suppression portfolio, engineered specifically for robust front-end protection in harsh-environment 12V/24V systems where reliability and surge immunity are critical.
FAQ
What is the AEC-Q101 qualification status of P6KE18H?
P6KE18H is explicitly AEC-Q101 qualified per the manufacturer's ordering code suffix "H", confirming compliance with stress tests for automotive electronics including temperature cycling, humidity bias, and high-temperature operating life. This qualification applies directly to the P6KE18H part number and is documented in Taiwan Semiconductor's P2203 specification revision.
How does P6KE18H differ from P6KE18A?
P6KE18H is the AEC-Q101 qualified version of the P6KE18A device. Both share identical electrical parameters-including 16.2V–19.8V VBR, 14.5V VWM, and 26.5V VC-but only P6KE18H undergoes full AEC-Q101 stress validation. P6KE18A is intended for commercial/industrial use, while P6KE18H is certified for automotive under-hood and chassis applications.
What is the maximum clamping voltage of P6KE18H at rated surge current?
The maximum clamping voltage (VC) of P6KE18H is 26.5V at 23A peak pulse current (IPP), measured under the standardized 10/1000μs waveform. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuits during transient events.
Can P6KE18H be used in bidirectional configurations?
No-P6KE18H is a unidirectional TVS diode, indicated by absence of "C" or "CA" suffix. For bidirectional protection, engineers must select P6KE18CA (if available) or use back-to-back P6KE18H devices. The datasheet confirms polarity marking (cathode band) and specifies unidirectional test conditions only.
What packaging options are available for P6KE18H?
P6KE18H is supplied in tape-and-reel format: 3,500 units per reel. The DO-204AC (DO-15) package uses axial leads with pure tin plating, compliant with J-STD-002 for solderability. No ammo box or bulk packaging is designated for the "H" variant per Taiwan Semiconductor's ordering information table.
P6KE18H 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):
- 14.5V
- Voltage - Breakdown (Min):
- 16.2V
- Voltage - Clamping (Max) @ Ipp:
- 26.5V
- Current - Peak Pulse (10/1000µs):
- 23A
- 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)
P6KE18H FAQ
1.How can I place an order for P6KE18H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE18H 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 P6KE18H reliable?
The price and inventory of P6KE18H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE18H is usually 5 days.
3.What payment methods are accepted for P6KE18H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE18H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE18H?
P6KE18H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE18H 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 P6KE18H?
For technical support, including P6KE18H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE18H requirements.
6.How does Aetrix verify that P6KE18H is sourced from the original manufacturer or authorized distributors?
All P6KE18H 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 P6KE18H meets industry standards.
7.What is the process for return or replacement of P6KE18H?
All P6KE18H units undergo pre-shipment inspection (PSI). If there is an issue with P6KE18H, 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 P6KE18H part is unused and in its original packaging.
Return procedure for P6KE18H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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