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Vishay General Semiconductor - Diodes Division P4KE18-E3/54
- Part No.:
- P4KE18-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE18-E3/54.pdf
- Description:
- TVS DIODE 14.5VWM 26.5VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:9,905
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Product details
Overview
P4KE18-E3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for clamping voltage transients on power and signal lines. It features 17.1 V to 18.9 V breakdown voltage (VBR), 15.3 V stand-off voltage (VWM), 1.0 mA test current, 1.0 μA max reverse leakage at VWM, and 400 W peak pulse power rating with 10/1000 μs waveform - used in automotive sensor protection and industrial power supply input stages.
For engineers reviewing the P4KE18-E3/54 datasheet, P4KE18-E3/54 pinout, P4KE18-E3/54 application, or P4KE18-E3/54 equivalent, this page delivers verified electrical parameters, DO-41 terminal mapping, AEC-Q101 qualification status, clamping voltage (25.2 V at 15.9 A), and direct alternatives for overvoltage protection design validation.
Technical Context
This TVS diode operates as a unidirectional clamping device with glass-passivated junction and matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. Its 10/1000 μs surge response delivers 15.9 A peak pulse current (IPPM) while maintaining 25.2 V clamping voltage (VC), enabling robust protection against inductive switching transients and ESD events.
The device supports operation from −55 °C to +175 °C junction temperature, exhibits 0.088 %/°C temperature coefficient of VBR, and is rated for 40 A non-repetitive forward surge (8.3 ms half-sine) - confirming suitability for high-reliability automotive and industrial environments where thermal stability and surge margin are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 17.1 V / 18.9 V - ensures reliable conduction onset above normal operating voltage without false triggering |
| VWM | 15.3 V - maximum continuous reverse working voltage before leakage exceeds 1.0 μA |
| IPPM @ 10/1000 μs | 15.9 A - peak transient current it can safely shunt without degradation |
| VC @ IPPM | 25.2 V - clamped voltage seen by protected circuit during full-rated surge |
| PPPM | 400 W - peak pulse power dissipation capability under standardized 10/1000 μs waveform |
| TJ max. | +175 °C - enables use in under-hood automotive and high-ambient industrial applications |
| AEC-Q101 | Qualified - validated for automotive-grade reliability per stress test requirements |
Pinout & Package
Package: DO-41 (DO-204AL), axial-leaded molded epoxy case with glass-passivated chip junction. Matte tin-plated leads; polarity marked by cathode band at one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line; conducts during forward surge (e.g., reverse-biased supply rail fault) |
| Cathode | Clamping terminal | Connected to higher-potential side; initiates avalanche breakdown when reverse voltage exceeds VBR, diverting surge current to ground |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable VBR tolerance (±5 %) and long-term reliability under thermal cycling |
| 400 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-to-ground) in compact DO-41 form factor |
| AEC-Q101 qualification | Validated for automotive applications including engine control units and body electronics |
| Low clamping ratio (VC/VBR ≈ 1.42) | Minimizes voltage overshoot during transient events, protecting downstream MOSFETs and ICs |
| RoHS-compliant E3 suffix | Meets JESD 201 Class 1A whisker resistance and UL 94 V-0 flammability for safety-critical designs |
Applications
| Automotive Sensor Protection | Industrial Power Input Stage |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional clamping element placed between signal line and chassis ground. Use Value: Limits transient voltage to ≤25.2 V during 15.9 A surges, preventing damage to 5 V or 12 V interface ICs. |
Use Scenario: Safeguarding AC-DC converter inputs against lightning-induced surges and inductive kickback. IC Role / Device Role / Timing Role: Primary overvoltage clamp on DC bus or rectified output rail. Use Value: Absorbs 400 W transient energy without failure, maintaining system uptime in factory automation equipment. |
| Consumer Power Adapter Output | Telecom Line Interface |
Use Scenario: Secondary-side surge suppression in USB-C PD adapters and wall chargers. IC Role / Device Role / Timing Role: Standoff-clamp TVS on regulated 5–20 V output rails. Use Value: Maintains 15.3 V working voltage margin while clamping to 25.2 V, compatible with USB PD voltage negotiation. |
Use Scenario: Protecting Ethernet PHY interfaces and DSL line drivers from induced surges on twisted-pair lines. IC Role / Device Role / Timing Role: Point-of-entry transient suppressor on differential pair inputs. Use Value: Fast 10/1000 μs response limits voltage excursion within Ethernet PHY absolute maximum ratings (e.g., ±30 V). |
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 | DO-214AA package; 18 V VBR; 600 W PPPM; 32.4 V VC at 18.5 A | Higher power rating but larger footprint; requires PCB rework for DO-41 replacement | Select when higher surge margin is required and board space allows SMB package |
| 1.5KE18A | DO-201AD package; same VBR range; 1500 W PPPM; 28.7 V VC at 52.3 A | Higher power handling and clamping voltage; not AEC-Q101 qualified | Prefer for non-automotive industrial systems needing greater single-pulse energy absorption |
Compared with SMBJ18A and 1.5KE18A, the P4KE18-E3/54 offers AEC-Q101 qualification and DO-41 compatibility in cost-sensitive automotive and consumer designs where 400 W surge capacity suffices - balancing reliability, size, and qualification requirements without over-specifying.
Availability
P4KE18-E3/54 is available at Aetrix Electronics and suitable for automotive sensor modules, industrial power supplies, consumer adapter outputs, and telecom line interfaces requiring stable component supply across production lifecycles.
Supply support for P4KE18-E3/54 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, and protection devices with emphasis on reliability and automotive qualification.
The P4KE18-E3/54 belongs to the TRANSZORB® family of TVS diodes engineered specifically for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure applications.
FAQ
What is the breakdown voltage tolerance for P4KE18-E3/54?
The P4KE18-E3/54 has a specified breakdown voltage (VBR) range of 17.1 V to 18.9 V at 1.0 mA test current, corresponding to a ±5 % tolerance. This tight tolerance ensures predictable clamping behavior in precision protection circuits and aligns with AEC-Q101 requirements for automotive-grade consistency.
Is P4KE18-E3/54 RoHS-compliant and lead-free?
Yes, the P4KE18-E3/54 carries the E3 suffix, indicating full RoHS compliance per Directive 2011/65/EU and exemption 6a. Its matte tin-plated leads meet J-STD-002 solderability standards and JESD 201 Class 1A whisker resistance, making it suitable for lead-free reflow assembly processes.
What is the maximum clamping voltage of P4KE18-E3/54 under surge conditions?
The P4KE18-E3/54 clamps to a maximum of 25.2 V at its rated peak pulse current of 15.9 A (10/1000 μs waveform). This value is guaranteed per Vishay's datasheet and defines the upper voltage limit imposed on protected circuitry during transient events.
Can P4KE18-E3/54 be used in bidirectional configurations?
No - the P4KE18-E3/54 is a unidirectional TVS diode, identified by the "A" suffix and cathode band marking. For bidirectional operation, Vishay specifies the CA suffix (e.g., P4KE18CA); using P4KE18-E3/54 in reverse-biased AC applications would result in unintended forward conduction.
What is the thermal resistance of P4KE18-E3/54 from junction to ambient?
The P4KE18-E3/54 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W with lead length L = 10 mm. This value assumes standard PCB mounting and informs derating calculations - for example, at 75 °C ambient, maximum continuous power must be reduced to ~0.75 W to maintain TJ ≤ 175 °C.
P4KE18-E3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AL, DO-41, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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):
- 15.1A
- Power - Peak Pulse:
- 400W
- 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-204AL (DO-41)
P4KE18-E3/54 FAQ
1.How can I place an order for P4KE18-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE18-E3/54 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 P4KE18-E3/54 reliable?
The price and inventory of P4KE18-E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE18-E3/54 is usually 5 days.
3.What payment methods are accepted for P4KE18-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE18-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE18-E3/54?
P4KE18-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE18-E3/54 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 P4KE18-E3/54?
For technical support, including P4KE18-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE18-E3/54 requirements.
6.How does Aetrix verify that P4KE18-E3/54 is sourced from the original manufacturer or authorized distributors?
All P4KE18-E3/54 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 P4KE18-E3/54 meets industry standards.
7.What is the process for return or replacement of P4KE18-E3/54?
All P4KE18-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE18-E3/54, 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 P4KE18-E3/54 part is unused and in its original packaging.
Return procedure for P4KE18-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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