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Vishay General Semiconductor - Diodes Division P6KE18AHE3/54
- Part No.:
- P6KE18AHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE18AHE3/54.pdf
- Description:
- TVS DIODE 15.3VWM 25.2VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,833
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Product details
Overview
P6KE18AHE3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode in DO-15 package, designed for primary-level overvoltage protection of DC power rails and signal lines. It features 600 W peak pulse power (10/1000 μs), 17.1–18.9 V breakdown voltage at 1 mA, 15.3 V stand-off voltage, 25.2 V maximum clamping voltage at 23.8 A, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the P6KE18AHE3/54 datasheet, P6KE18AHE3/54 pinout, P6KE18AHE3/54 application, or P6KE18AHE3/54 equivalent, key selection criteria include clamping voltage margin vs. protected IC's absolute maximum rating, thermal resistance (RθJL = 20 °C/W), unidirectional polarity marking, and compliance with UL 497B for telecom surge protection.
Technical Context
This TVS operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (<1 μA leakage at 15.3 V), but triggers into low-impedance conduction when transient voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable VBR and fast response (<1 ns), while the DO-15 package supports manual or automated through-hole assembly with 275 °C solder dip tolerance.
The device is rated for -55 °C to +175 °C junction temperature, derates linearly above 25 °C ambient, and fails short-circuit under catastrophic overload-enabling coordination with upstream fuses or circuit breakers. Its 0.088 %/°C VBR temperature coefficient ensures predictable clamping behavior across automotive thermal profiles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 17.1–18.9 V at 1 mA test current - defines precise turn-on threshold for transient suppression |
| Stand-off Voltage VWM | 15.3 V - maximum continuous working voltage without leakage exceeding 1 μA |
| Clamping Voltage VC | 25.2 V at 23.8 A peak pulse - limits voltage seen by downstream ICs during 10/1000 μs surge |
| Peak Pulse Power | 600 W (10/1000 μs waveform) - sustains single high-energy transients common in automotive load dump |
| Thermal Resistance RθJL | 20 °C/W - enables effective heat transfer from junction to PCB lead, critical for repetitive surge handling |
| Operating Temperature | -55 °C to +175 °C - supports under-hood automotive and industrial environments without derating loss |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress test requirements including HTRB, HTGB, and TCT |
Pinout & Package
Package: DO-15 (DO-204AC), axial-leaded, epoxy-molded case meeting UL 94 V-0 flammability rating. Matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards. Color band denotes cathode end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Current entry point during forward conduction | Connected to lower-potential side (e.g., GND) in unidirectional configuration |
| Cathode (banded end) | Current exit point during reverse-biased clamping | Connected to protected line (e.g., 12 V rail); clamps to anode when Vin > VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity |
| 600 W peak pulse power (10/1000 μs) | Withstands ISO 7637-2 Pulse 5a (load dump) surges up to 120 V/300 ms in automotive 12 V systems |
| AEC-Q101 qualification | Validated for automotive use including high-temp storage, bias-HTRB, and mechanical shock testing |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes overvoltage stress on protected MOSFET gates or MCU I/O pins during ESD or inductive switching |
| Matte tin plating & JESD 201 Class 2 whisker resistance | Enables robust solder joint integrity in high-reliability industrial and automotive PCB assemblies |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V supply inputs of body control modules against load dump transients up to 120 V. IC Role / Device Role / Timing Role: Unidirectional shunt clamp placed between battery rail and local regulator input. Use Value: Limits voltage to ≤25.2 V during 600 W surge, preventing damage to downstream LDOs and microcontrollers. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loop) from field wiring induced surges. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional TVS mounted at connector entry point. Use Value: Clamps ±25.2 V transients within nanoseconds, preserving sensor accuracy and avoiding ADC saturation. |
| Telecom Line Interface Protection | Consumer Power Adapter Input Protection |
|
Use Scenario: UL 497B-compliant protection of Ethernet PHY power pins against lightning-induced surges. IC Role / Device Role / Timing Role: Primary-stage TVS on 3.3 V/5 V bias rails feeding isolated magnetics. Use Value: Meets UL 497B surge withstand requirements with verified clamping performance at 23.8 A. |
Use Scenario: Cost-sensitive overvoltage guard on AC-DC adapter DC output before USB-PD controller. IC Role / Device Role / Timing Role: Stand-off-rated clamp absorbing capacitor discharge spikes during hot-plug events. Use Value: Prevents latch-up in USB-C port controllers by limiting voltage overshoot to 25.2 V at 23.8 A. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ18A | Surface-mount SMA package (vs. through-hole DO-15); same 18 V VBR, 25.2 V VC, but lower 400 W PPPM rating | Requires PCB re-layout; better suited for space-constrained consumer designs than automotive chassis mounting | Select SMAJ18A only if board real estate is constrained and 400 W surge margin suffices. |
| P6KE18CA | Bidirectional variant with identical VBR (17.1–18.9 V) and VC (25.2 V), but no polarity marking and symmetric clamping in both directions | Required for AC-coupled or differential signal lines (e.g., RS-485) where polarity reversal occurs | Choose P6KE18CA only when protecting bidirectional signals; P6KE18AHE3/54 is optimal for DC rails with defined ground reference. |
Compared with SMAJ18A and P6KE18CA, P6KE18AHE3/54 delivers higher surge robustness (600 W vs. 400 W) and AEC-Q101 qualification in a mechanically stable through-hole package-making it preferred for automotive and industrial power rail protection where reliability trumps miniaturization.
Availability
P6KE18AHE3/54 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, telecom interface modules, and consumer power adapters requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P6KE18AHE3/54 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific performance.
The P6KE series targets cost-effective, high-surge-capability protection for automotive, industrial, and telecom infrastructure-designed to replace bulkier MOVs while delivering faster response and tighter voltage control.
FAQ
What is the maximum clamping voltage of the P6KE18AHE3/54 under standard test conditions?
The P6KE18AHE3/54 has a maximum clamping voltage (VC) of 25.2 V when subjected to its rated peak pulse current of 23.8 A using a 10/1000 μs waveform. This value is measured at the device terminals and represents the upper voltage limit imposed on protected circuitry during a surge event, ensuring compatibility with 24 V system components' absolute maximum ratings.
Is the P6KE18AHE3/54 suitable for automotive applications?
Yes, the P6KE18AHE3/54 is AEC-Q101 qualified and specifically designed for automotive use. Its -55 °C to +175 °C operating range, 600 W surge capability, and validation across high-temperature reverse bias (HTRB), temperature cycling (TCT), and mechanical shock tests confirm suitability for under-hood and body electronics applications such as ECUs and lighting modules.
How does the HE3 suffix differ from the E3 suffix in P6KE18AHE3/54?
The HE3 suffix in P6KE18AHE3/54 indicates RoHS compliance plus AEC-Q101 qualification and JESD 201 Class 2 whisker resistance, whereas E3 denotes RoHS compliance only (commercial grade). The HE3 version is required for automotive and high-reliability industrial deployments where extended temperature operation and long-term solder joint integrity are mandatory.
What is the stand-off voltage (VWM) of the P6KE18AHE3/54, and why is it important?
The stand-off voltage (VWM) of the P6KE18AHE3/54 is 15.3 V-this is the maximum continuous DC or RMS voltage the device can block without exceeding 1 μA leakage current. It ensures reliable operation on 12 V nominal systems while providing sufficient margin below the 17.1 V minimum breakdown voltage to prevent false triggering during normal operation or ripple.
Can the P6KE18AHE3/54 be used in bidirectional signal protection?
No, the P6KE18AHE3/54 is a unidirectional TVS diode with a cathode band marking; it conducts only when the cathode is more positive than the anode. For bidirectional signal lines (e.g., RS-485, CAN, or AC-coupled audio), the bidirectional variant P6KE18CA must be used instead, as it clamps symmetrically in both polarities without polarity dependence.
P6KE18AHE3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- TransZorb®
- 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:
- 25.2V
- Current - Peak Pulse (10/1000µs):
- 23.8A
- 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)
P6KE18AHE3/54 FAQ
1.How can I place an order for P6KE18AHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE18AHE3/54 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 P6KE18AHE3/54 reliable?
The price and inventory of P6KE18AHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE18AHE3/54 is usually 5 days.
3.What payment methods are accepted for P6KE18AHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE18AHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE18AHE3/54?
P6KE18AHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE18AHE3/54 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 P6KE18AHE3/54?
For technical support, including P6KE18AHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE18AHE3/54 requirements.
6.How does Aetrix verify that P6KE18AHE3/54 is sourced from the original manufacturer or authorized distributors?
All P6KE18AHE3/54 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 P6KE18AHE3/54 meets industry standards.
7.What is the process for return or replacement of P6KE18AHE3/54?
All P6KE18AHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P6KE18AHE3/54, 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 P6KE18AHE3/54 part is unused and in its original packaging.
Return procedure for P6KE18AHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE18AHE3/54 Tags
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