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Vishay General Semiconductor - Diodes Division P4KE18A-E3/54
- Part No.:
- P4KE18A-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE18A-E3/54.pdf
- Description:
- TVS DIODE 15.3VWM 25.2VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:7,707
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Product details
Overview
P4KE18A-E3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed to protect sensitive electronics against voltage transients induced by inductive load switching and lightning surges. It features a 17.1 V minimum breakdown voltage (VBR), 15.3 V standoff voltage (VWM), 1.0 mA test current, 1.0 μA max reverse leakage at VWM, and clamps to 25.2 V at 15.9 A peak pulse current - used in automotive sensor signal lines and industrial I/O protection.
For engineers reviewing the P4KE18A-E3/54 datasheet, P4KE18A-E3/54 pinout, P4KE18A-E3/54 application, or P4KE18A-E3/54 equivalent, this page delivers verified electrical parameters, DO-41 terminal mapping, real-world clamping behavior, thermal derating curves, and AEC-Q101-qualified alternatives for automotive-grade transient suppression design.
Technical Context
The P4KE18A-E3/54 operates as a silicon avalanche diode with glass-passivated junction, delivering bidirectional-capable surge protection in unidirectional configuration. Its 400 W peak pulse power rating (10/1000 μs waveform) and 66 °C/W junction-to-lead thermal resistance enable robust transient energy absorption without thermal runaway under repetitive surge conditions.
It exhibits 0.088 %/°C temperature coefficient of breakdown voltage and 3.5 V max forward voltage at 25 A, confirming stable clamping across operating temperature range (–55 °C to +175 °C). The device meets JESD 22-B106 solderability (275 °C, 10 s) and JESD 201 Class 1A whisker resistance per E3 suffix.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 17.1 V / 18.9 V at 1.0 mA - defines reliable avalanche initiation threshold for overvoltage detection |
| VWM | 15.3 V - maximum continuous reverse working voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | 25.2 V at 15.9 A - clamping voltage during 400 W transient, limiting downstream IC stress |
| PPPM | 400 W - peak pulse power handling with 10/1000 μs waveform, 0.01 % duty cycle |
| TJ max | +175 °C - enables operation in under-hood automotive environments and high-ambient industrial settings |
| RθJL | 66 °C/W - low thermal resistance supports sustained surge dissipation into PCB copper or lead frame |
| AEC-Q101 | Qualified - validated for automotive electronic modules requiring reliability under temperature cycling, humidity, and mechanical shock |
Pinout & Package
DO-41 (DO-204AL) molded epoxy package with matte tin-plated leads; cathode indicated by color band on body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path during surge | Connected to protected line (e.g., sensor output); conducts when transient exceeds VBR in reverse bias |
| Cathode | Avalanche breakdown node | Marked end; reverse-biased to ground or rail; initiates clamping at specified VBR threshold |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under humidity and thermal cycling |
| 400 W peak pulse power (10/1000 μs) | Handles automotive load-dump and ISO 7637-2 Pulse 1/2a/5a transients without degradation |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns response time) |
| AEC-Q101 qualification | Validated for automotive control units, ADAS sensors, and infotainment interfaces |
| RoHS-compliant E3 suffix | Meets JESD 201 Class 1A whisker resistance and J-STD-002 solderability standards |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine control modules exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor output and ground to clamp transients above 15.3 V. Use Value: Limits voltage seen by downstream op-amp input to ≤25.2 V during 15.9 A surge, preventing latch-up or damage. |
Use Scenario: Shielding 24 V digital input channels in programmable logic controllers from inductive kickback of solenoid valves. IC Role / Device Role / Timing Role: Standoff-rated TVS connected across input terminals to absorb 400 W spikes without affecting steady-state logic levels. Use Value: Maintains functional integrity during repeated 10/1000 μs surges up to 15.9 A while meeting IEC 61000-4-5 Level 3 immunity. |
| Consumer Power Adapter Input | Telecom Line Interface Protection |
Use Scenario: Safeguarding primary-side controller ICs in AC-DC adapters against lightning-induced surges on mains input. IC Role / Device Role / Timing Role: Primary-side TVS across bridge rectifier output to suppress differential-mode transients before bulk capacitor. Use Value: Clamps 10/1000 μs surges to 25.2 V, enabling use of lower-voltage-rated MOSFETs and reducing BOM cost. |
Use Scenario: Protecting RS-485 transceivers on telecom base station backhaul links from ESD and induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS on each data line (A/B) referenced to ground, leveraging 15.3 V VWM to avoid false triggering. Use Value: Enables compliance with ITU-T K.21 Basic Protection Level while preserving signal integrity up to 10 Mbps. |
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, 600 W PPPM, 28.7 V VC @ 21.2 A, same VWM/VBR range | Higher surge rating but larger footprint; better suited for board space-constrained designs needing >400 W margin | Select SMBJ18A when higher peak power headroom or surface-mount assembly is required. |
| P4KE18CA | Bidirectional variant, identical VBR/VWM/PPPM, no polarity marking, symmetric clamping in both directions | Required for AC-coupled or floating signal lines where polarity reversal may occur (e.g., audio inputs, transformer-isolated interfaces) | Choose P4KE18CA only when bidirectional protection is mandated by circuit topology. |
Compared with SMBJ18A and P4KE18CA, the P4KE18A-E3/54 offers optimal cost-performance balance for through-hole automotive and industrial DC signal protection, with proven AEC-Q101 qualification and DO-41 compatibility with legacy designs.
Availability
P4KE18A-E3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, consumer power adapter inputs, and telecom line interface protection requiring stable component supply and full traceability.
Supply support for P4KE18A-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade qualification.
The P4KE18A-E3/54 belongs to Vishay's TRANSZORB® TVS family, engineered specifically for robust transient suppression in harsh environments including automotive, industrial, and telecom infrastructure applications.
FAQ
What is the breakdown voltage tolerance of the P4KE18A-E3/54?
The P4KE18A-E3/54 has a guaranteed breakdown voltage range of 17.1 V to 18.9 V at 1.0 mA test current, corresponding to ±5.6 % tolerance around the nominal 18 V rating. This tight VBR window ensures consistent clamping behavior across production lots and temperature extremes, critical for protecting precision analog circuits downstream of the P4KE18A-E3/54.
Is the P4KE18A-E3/54 suitable for automotive applications?
Yes, the P4KE18A-E3/54 is AEC-Q101 qualified and rated for operation from –55 °C to +175 °C, making it suitable for under-hood and cabin-mounted automotive electronics. Its glass-passivated junction, 400 W surge capability, and JESD 201 Class 1A whisker resistance meet stringent automotive reliability requirements - confirmed in the official Vishay document 88365 for the P4KE18A-E3/54.
What does the "E3/54" suffix mean in P4KE18A-E3/54?
The "E3" suffix indicates RoHS-compliant construction with matte tin-plated leads meeting JESD 201 Class 1A whisker resistance and J-STD-002 solderability. The "/54" denotes packaging in 13-inch paper tape and reel with 5500 units per reel - standard for automated through-hole insertion. This exact configuration is documented in Vishay's ordering information table for the P4KE18A-E3/54.
How does the P4KE18A-E3/54 compare to the P4KE18CA variant?
The P4KE18A-E3/54 is unidirectional with cathode marking, while P4KE18CA is bidirectional with no polarity marking and symmetric clamping in both directions. Both share identical VBR, VWM, and PPPM, but the P4KE18A-E3/54 must be oriented correctly in-circuit, whereas P4KE18CA simplifies layout for AC or floating nodes - a key distinction when selecting between these two variants of the P4KE18A-E3/54 family.
What is the maximum clamping voltage of the P4KE18A-E3/54 during a surge event?
The P4KE18A-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 measured under standardized test conditions and represents the upper limit of voltage imposed on protected circuitry during worst-case transient events - a critical parameter for ensuring downstream ICs like microcontrollers or transceivers remain within absolute maximum ratings when using the P4KE18A-E3/54.
P4KE18A-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:
- 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):
- 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)
P4KE18A-E3/54 FAQ
1.How can I place an order for P4KE18A-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE18A-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 P4KE18A-E3/54 reliable?
The price and inventory of P4KE18A-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 P4KE18A-E3/54 is usually 5 days.
3.What payment methods are accepted for P4KE18A-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE18A-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE18A-E3/54?
P4KE18A-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE18A-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 P4KE18A-E3/54?
For technical support, including P4KE18A-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE18A-E3/54 requirements.
6.How does Aetrix verify that P4KE18A-E3/54 is sourced from the original manufacturer or authorized distributors?
All P4KE18A-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 P4KE18A-E3/54 meets industry standards.
7.What is the process for return or replacement of P4KE18A-E3/54?
All P4KE18A-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE18A-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 P4KE18A-E3/54 part is unused and in its original packaging.
Return procedure for P4KE18A-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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