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Vishay General Semiconductor - Diodes Division P4KE18CA-E3/54
- Part No.:
- P4KE18CA-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE18CA-E3/54.pdf
- Description:
- TVS DIODE 15.3VWM 25.2VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:301
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Product details
Overview
P4KE18CA-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 or power lines. It features 18 V breakdown voltage (VBR min/max = 17.1–18.9 V), 15.3 V stand-off voltage (VWM), 25.2 V maximum clamping voltage at 15.9 A peak pulse current, and 400 W peak pulse power rating with 10/1000 μs waveform - used in automotive sensor line protection and industrial I/O interface surge suppression.
For engineers reviewing the P4KE18CA-E3/54 datasheet, P4KE18CA-E3/54 pinout, P4KE18CA-E3/54 application, or P4KE18CA-E3/54 equivalent, key selection criteria include bidirectional clamping capability, DO-41 leaded package compatibility with through-hole PCB assembly, AEC-Q101 qualification for automotive use, and verified 175 °C maximum junction temperature handling under transient stress.
Technical Context
This bidirectional TVS diode operates symmetrically in both polarities, with identical electrical characteristics forward and reverse - enabling robust protection of AC-coupled or differential signal paths without polarity dependency. Its glass-passivated junction ensures stable leakage performance and low incremental surge resistance (< 1.6 Ω typical), critical for fast clamping response to ESD and lightning-induced surges.
The device complies with AEC-Q101 for automotive applications and supports 100% JESD 22-B102 solderability with matte tin-plated leads. Thermal resistance is specified as RθJL = 66 °C/W (junction-to-lead), allowing reliable power dissipation up to 1.5 W at TL = 75 °C on an infinite heatsink.
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 voltage threshold where clamping begins under transient stress |
| VWM | 15.3 V - maximum continuous working voltage before leakage exceeds 1.0 μA; sets safe operating margin below breakdown |
| VC @ IPPM | 25.2 V at 15.9 A - clamped voltage during 400 W 10/1000 μs surge; determines protected circuit's worst-case overvoltage exposure |
| PPPM | 400 W - peak pulse power handling per single transient; enables protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) |
| IPPM | 15.9 A - peak pulse current corresponding to 400 W at 25.2 V clamping; defines minimum trace width and fuse coordination |
| TJ max | +175 °C - maximum junction temperature; supports operation in under-hood automotive environments and high-ambient industrial settings |
| RθJL | 66 °C/W - thermal resistance from junction to lead; informs heatsinking requirements when mounted on PCB copper pour |
Pinout & Package
Package: DO-41 (DO-204AL), axial-leaded, molded epoxy body with glass-passivated chip junction. RoHS-compliant, matte tin-plated leads, UL 94 V-0 rated molding compound. No polarity marking - bidirectional symmetry eliminates cathode/anode orientation concerns during placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional transient conduction path | Either lead serves as input/output terminal; no polarity-dependent routing required - simplifies layout for AC or differential lines |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance (±5%) and <1.0 μA leakage at VWM, critical for low-power sensor interfaces |
| 400 W peak pulse power (10/1000 μs) | Validated clamping performance against repetitive surges up to 0.01% duty cycle - suitable for motor drive feedback protection |
| AEC-Q101 qualified | Qualified for automotive-grade reliability including temperature cycling, HTRB, and surge endurance - approved for engine control and ADAS sensor lines |
| Low clamping ratio (VC/VBR ≈ 1.41) | Minimizes overvoltage stress on downstream ICs like CAN transceivers or ADC front-ends during transient events |
| DO-41 mechanical robustness | Withstands 275 °C solder dip for 10 s (JESD 22-B106); compatible with wave and selective soldering processes in high-volume manufacturing |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine bay modules exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between sensor output and microcontroller ADC input, shunting transients before they reach sensitive analog circuitry. Use Value: Maintains signal integrity by limiting overvoltage to ≤25.2 V during 15.9 A surges, preventing ADC saturation or latch-up in AEC-Q100 Grade 2 systems. |
Use Scenario: Safeguarding 24 V digital input channels on programmable logic controller (PLC) backplanes subject to field-wiring induced surges. IC Role / Device Role / Timing Role: Primary surge suppressor across input terminals, operating in parallel with optocoupler input stage to absorb energy before isolation barrier. Use Value: Enables compliance with IEC 61000-4-4 (EFT) and IEC 61000-4-5 (surge) up to 2 kV/42 Ω, reducing false triggering and component failure rates. |
| Consumer Audio Line Protection | Telecom DSL Line Interface |
|
Use Scenario: Shielding unbalanced audio outputs (RCA, 3.5 mm) in home theater receivers from ESD and cable-induced transients during hot plugging. IC Role / Device Role / Timing Role: Low-capacitance TVS placed directly at connector, clamping ±8 kV contact ESD per IEC 61000-4-2 without distorting audio bandwidth. Use Value: Delivers sub-1 ns response time and <1 pF junction capacitance (typical), preserving full 20 Hz–20 kHz frequency response without high-frequency roll-off. |
Use Scenario: Protecting ADSL/VDSL line drivers and receivers connected to external telephone wiring susceptible to lightning-induced surges. IC Role / Device Role / Timing Role: First-stage protector on line-side transformer secondary, absorbing common-mode surges before reaching integrated line interface ICs. Use Value: Handles 400 W peak power with 25.2 V clamping, ensuring line driver ICs (e.g., LME49710) remain within absolute maximum ratings during 10/700 μs telecom surges. |
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 (17.1–18.9 V), identical 400 W rating but lower IPPM (21.6 A) due to different thermal path | Requires rework of PCB layout for SMT assembly; better suited for space-constrained consumer electronics vs. industrial chassis-mount designs | Select SMBJ18CA only when board real estate is limited and automated SMT placement is available; verify thermal relief pad design for 1.5 W dissipation |
| 1.5KE18CA | Higher peak pulse power (1500 W) in DO-201 package; same VBR and VC, but larger footprint and higher cost; not AEC-Q101 qualified | Used where higher surge immunity (e.g., outdoor telecom cabinets) justifies larger size and non-automotive qualification | Choose 1.5KE18CA only if system-level testing requires >400 W surge handling; otherwise P4KE18CA-E3/54 offers optimal cost-performance balance for automotive and industrial use |
Compared with SMBJ18CA and 1.5KE18CA, P4KE18CA-E3/54 delivers AEC-Q101 qualification and DO-41 manufacturability at 400 W rating - making it the preferred choice for cost-sensitive, high-reliability through-hole designs where 15.9 A peak current suffices and automotive compliance is mandatory.
Availability
P4KE18CA-E3/54 is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom line interface boards requiring stable component supply with AEC-Q101 assurance and DO-41 through-hole compatibility.
Supply support for P4KE18CA-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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P4KE series targets cost-effective, high-volume transient suppression in automotive, industrial, and consumer systems - engineered for robustness in harsh environments while maintaining tight VBR tolerances and low clamping ratios.
FAQ
What is the breakdown voltage tolerance for P4KE18CA-E3/54?
The P4KE18CA-E3/54 has a guaranteed breakdown voltage range of 17.1 V to 18.9 V at 1.0 mA test current, representing a ±5% tolerance around the nominal 18 V rating. This tight tolerance ensures consistent clamping behavior across production lots and supports precise overvoltage margining in safety-critical circuits such as automotive sensor interfaces where P4KE18CA-E3/54 is commonly deployed.
Is P4KE18CA-E3/54 suitable for automotive applications?
Yes, P4KE18CA-E3/54 is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments with operating junction temperatures up to +175 °C. Its glass-passivated junction, matte tin-plated leads, and 0.01% duty-cycle surge endurance make P4KE18CA-E3/54 appropriate for protecting CAN bus nodes, engine control sensors, and ADAS camera power rails against ISO 7637-2 transients.
What does the "CA" suffix indicate in P4KE18CA-E3/54?
The "CA" suffix in P4KE18CA-E3/54 denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression in both forward and reverse directions, with identical VBR, VC, and leakage characteristics regardless of polarity. This eliminates the need for polarity-aware placement and makes P4KE18CA-E3/54 ideal for AC signal lines, differential buses, and ungrounded power domains.
How does P4KE18CA-E3/54 compare to unidirectional P4KE18A-E3/54?
P4KE18CA-E3/54 differs from P4KE18A-E3/54 solely in polarity: the "CA" version is bidirectional with no cathode marking and equal clamping in both directions, while "A" is unidirectional with a cathode band and forward conduction capability. Both share identical VBR, VC, and 400 W rating, but P4KE18CA-E3/54 is selected when circuit topology lacks defined ground reference or handles AC-coupled signals where polarity reversal may occur.
What is the maximum clamping voltage of P4KE18CA-E3/54 under surge conditions?
The maximum clamping voltage (VC) of P4KE18CA-E3/54 is 25.2 V at its rated peak pulse current of 15.9 A (10/1000 μs waveform). This value represents the worst-case voltage imposed on protected circuitry during a full 400 W transient event and is critical for verifying that downstream components - such as microcontroller I/O pins or op-amp inputs - remain within their absolute maximum voltage ratings when P4KE18CA-E3/54 is deployed.
P4KE18CA-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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 15.3V
- Voltage - Breakdown (Min):
- 17.1V
- Voltage - Clamping (Max) @ Ipp:
- 25.2V
- Current - Peak Pulse (10/1000µs):
- 15.9A
- 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)
P4KE18CA-E3/54 FAQ
1.How can I place an order for P4KE18CA-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE18CA-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 P4KE18CA-E3/54 reliable?
The price and inventory of P4KE18CA-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 P4KE18CA-E3/54 is usually 5 days.
3.What payment methods are accepted for P4KE18CA-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE18CA-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE18CA-E3/54?
P4KE18CA-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE18CA-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 P4KE18CA-E3/54?
For technical support, including P4KE18CA-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE18CA-E3/54 requirements.
6.How does Aetrix verify that P4KE18CA-E3/54 is sourced from the original manufacturer or authorized distributors?
All P4KE18CA-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 P4KE18CA-E3/54 meets industry standards.
7.What is the process for return or replacement of P4KE18CA-E3/54?
All P4KE18CA-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE18CA-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 P4KE18CA-E3/54 part is unused and in its original packaging.
Return procedure for P4KE18CA-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE18CA-E3/54 Tags
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