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Vishay General Semiconductor - Diodes Division P4KE18C-E3/54
- Part No.:
- P4KE18C-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE18C-E3/54.pdf
- Description:
- TVS DIODE 14.5VWM 26.5VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:5,374
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Product details
Overview
P4KE18C-E3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for clamping voltage transients on signal and power lines. It features 17.1 V to 18.9 V breakdown voltage (VBR), 15.3 V standoff voltage (VWM), 400 W peak pulse power (10/1000 μs), and clamps to ≤25.2 V at 15.9 A peak pulse current - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the P4KE18C-E3/54 datasheet, P4KE18C-E3/54 pinout, P4KE18C-E3/54 application, or P4KE18C-E3/54 equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, DO-41 mechanical compatibility, and verified 15.3 V working voltage with <1 μA leakage at rated VWM.
Technical Context
This device operates as a silicon avalanche diode optimized for transient suppression in both polarities, with glass-passivated junction ensuring stable VBR tolerance and low incremental surge resistance. Its bidirectional architecture eliminates polarity dependency, enabling direct placement across AC-coupled or floating signal paths without orientation constraints.
Thermal performance is defined by RθJL = 66 °C/W and maximum junction temperature of 175 °C, supporting reliable operation under repetitive surge conditions when mounted with standard lead lengths. The 10/1000 μs waveform rating reflects industry-standard lightning/surge immunity testing per IEC 61000-4-5.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 17.1 V / 18.9 V at 1.0 mA test current - defines precise clamping onset threshold for overvoltage events |
| VWM | 15.3 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | ≤25.2 V at 15.9 A - clamped voltage during 400 W transient, limiting stress on downstream ICs |
| PPPM | 400 W (10/1000 μs waveform) - standardized surge energy handling capacity for industrial and automotive transients |
| IPPM | 15.9 A - peak surge current supported without degradation, derated above 25 °C ambient |
| TJ max. | +175 °C - enables use in under-hood automotive environments and high-temperature industrial enclosures |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
Pinout & Package
Package: DO-41 (DO-204AL), molded epoxy body with matte tin-plated leads; RoHS-compliant, UL 94 V-0 rated compound; 0.350 g unit weight; 5500 pcs per 13″ tape-and-reel (E3/54).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (unmarked) | Bidirectional terminal pair | No polarity marking required; symmetric conduction in both directions for AC or floating line protection |
| Lead 1 / Lead 2 | Current path terminals | Leads serve as both mechanical mounting points and low-inductance surge current paths to PCB ground or rail |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures tight VBR tolerance (±5 %) and long-term stability under thermal cycling and humidity stress |
| 400 W peak pulse power (10/1000 μs) | Meets IEC 61000-4-5 Level 3/4 surge immunity requirements for industrial control and automotive ECUs |
| AEC-Q101 qualification | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes overvoltage overshoot during fast transients, protecting 3.3 V and 5 V logic-level components |
| 1.0 μA max reverse leakage @ VWM | Prevents signal distortion or power loss in high-impedance analog and communication lines |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and Hall-effect sensor outputs from load dump and inductive switching spikes in vehicle chassis modules. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point to shunt transients before reaching ASIC input pins. Use Value: Maintains signal integrity under ISO 7637-2 Pulse 5a (load dump) with clamping below 25.2 V, preventing latch-up in 5 V tolerant receivers. |
Use Scenario: Safeguarding 4–20 mA current loop inputs in programmable logic controllers against field wiring faults and ESD events. IC Role / Device Role / Timing Role: Primary transient suppressor across input terminals, coordinated with series current-limiting resistor and filtering capacitor. Use Value: Enables compliance with IEC 61000-4-4 (EFT) and IEC 61000-4-5 (surge) without adding active circuitry or increasing board area. |
| Consumer Appliance Motor Control | Telecom Line Card Protection |
Use Scenario: Suppressing back-EMF spikes generated by brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Parallel-connected TVS across motor terminals to absorb inductive energy during MOSFET turn-off. Use Value: Extends MOSFET lifetime by limiting drain-source voltage overshoot to ≤25.2 V, reducing avalanche stress and thermal runaway risk. |
Use Scenario: Protecting Ethernet PHY interface circuits and PoE injectors from lightning-induced surges on twisted-pair cabling. IC Role / Device Role / Timing Role: First-stage protector on differential pairs, preceding gas discharge tube (GDT) and common-mode choke. Use Value: Responds in <1 ps to limit initial voltage spike, enabling coordinated clamping with secondary protectors for full IEC 61000-4-5 Class B compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ18CA | Surface-mount SMB package (vs. through-hole DO-41); same VBR range and 600 W PPPM | Requires PCB redesign for SMT assembly; higher surge rating suits space-constrained telecom designs | Select when automated assembly and higher power margin are prioritized over legacy through-hole compatibility |
| 1.5KE18CA | Higher 1500 W PPPM, same DO-41 package but larger body (DO-201AE); VBR 17.1–18.9 V identical | Used where single-event surge energy exceeds 400 W, e.g., mains-connected industrial equipment | Choose when system-level surge testing requires >400 W headroom and board layout accommodates larger footprint |
Compared with SMBJ18CA and 1.5KE18CA, the P4KE18C-E3/54 offers optimal balance of proven DO-41 reliability, AEC-Q101 qualification, and cost-effective 400 W protection for high-volume automotive and industrial applications where through-hole mounting remains standard.
Availability
P4KE18C-E3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC analog inputs, and consumer appliance motor control requiring stable component supply across multi-year production cycles.
Supply support for P4KE18C-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 P4KE18C-E3/54 belongs to the TRANSZORB® family of transient voltage suppressors engineered specifically for robust, bidirectional surge protection in harsh environments including automotive, industrial, and telecom infrastructure.
FAQ
What is the polarity configuration of P4KE18C-E3/54?
The P4KE18C-E3/54 is a bidirectional TVS diode with no polarity marking on the DO-41 package. Its symmetrical avalanche structure allows it to clamp voltage transients equally in both directions, making it ideal for AC signal lines, transformer-coupled interfaces, and floating bus systems without orientation concerns during assembly.
Is P4KE18C-E3/54 qualified for automotive applications?
Yes, the P4KE18C-E3/54 carries AEC-Q101 qualification, confirming its suitability for automotive electronics including engine control units, body control modules, and sensor interfaces. This qualification covers stress tests such as high-temperature reverse bias, temperature cycling, and ESD robustness per automotive reliability standards.
What is the maximum clamping voltage of P4KE18C-E3/54 under surge conditions?
The P4KE18C-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 clamping voltage ensures downstream 5 V logic components remain within safe operating limits during transient events, with a clamping ratio of approximately 1.4 relative to its VBR midpoint.
How does P4KE18C-E3/54 differ from unidirectional variants like P4KE18A-E3/54?
The "C" suffix in P4KE18C-E3/54 denotes bidirectional functionality, whereas P4KE18A-E3/54 is unidirectional with a cathode band marking. Electrically, P4KE18C-E3/54 provides identical VBR and VC specs in both directions, while P4KE18A-E3/54 only clamps in reverse bias and conducts forward current like a standard diode - critical for correct placement in DC-biased circuits.
What packaging format is used for P4KE18C-E3/54?
P4KE18C-E3/54 is supplied in 13″ diameter paper tape and reel format with a base quantity of 5500 pieces per reel (package code "54"). The "E3" suffix indicates RoHS-compliant, commercial-grade construction with matte tin-plated leads meeting J-STD-002 solderability and JESD 201 class 1A whisker resistance requirements.
P4KE18C-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:
- -
- Bidirectional Channels:
- 1
- 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)
P4KE18C-E3/54 FAQ
1.How can I place an order for P4KE18C-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE18C-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 P4KE18C-E3/54 reliable?
The price and inventory of P4KE18C-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 P4KE18C-E3/54 is usually 5 days.
3.What payment methods are accepted for P4KE18C-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE18C-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE18C-E3/54?
P4KE18C-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE18C-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 P4KE18C-E3/54?
For technical support, including P4KE18C-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE18C-E3/54 requirements.
6.How does Aetrix verify that P4KE18C-E3/54 is sourced from the original manufacturer or authorized distributors?
All P4KE18C-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 P4KE18C-E3/54 meets industry standards.
7.What is the process for return or replacement of P4KE18C-E3/54?
All P4KE18C-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE18C-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 P4KE18C-E3/54 part is unused and in its original packaging.
Return procedure for P4KE18C-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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