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Vishay General Semiconductor - Diodes Division P4KE18CHE3/54
- Part No.:
- P4KE18CHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE18CHE3/54.pdf
- Description:
- TVS DIODE 14.5VWM 26.5VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:5,937
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Product details
Overview
P4KE18CHE3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 18 V breakdown voltage (VBR min/max = 17.1–18.9 V), 15.3 V stand-off voltage (VWM), 1.0 mA test current, 1.0 μA max reverse leakage at VWM, and clamps transients to ≤25.2 V at 15.9 A peak pulse current (10/1000 μs).
For engineers reviewing the P4KE18CHE3/54 datasheet, P4KE18CHE3/54 pinout, P4KE18CHE3/54 application, or P4KE18CHE3/54 equivalent, this AEC-Q101 qualified device supports automotive-grade surge immunity in power supply inputs, sensor interfaces, and industrial control I/O where reliable 400 W transient suppression and −55 °C to +175 °C operation are required.
Technical Context
This unidirectional TVS diode uses a glass passivated silicon junction to deliver fast response (<1 ns) and low incremental surge resistance, enabling precise clamping during ESD, lightning-induced surges, and inductive switching transients. Its DO-41 package provides mechanical robustness and solderability per J-STD-002 with matte tin-plated leads.
The device operates across −55 °C to +175 °C junction temperature range, with thermal resistance RθJL = 66 °C/W and RθJA = 100 °C/W (LLead = 10 mm). It sustains 40 A non-repetitive forward surge (8.3 ms half-sine) and dissipates 1.5 W continuously on infinite heatsink at TL = 75 °C.
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 while avoiding false triggering. |
| VWM | 15.3 V - Maximum continuous DC or RMS voltage the device blocks without significant leakage. |
| IPPM | 15.9 A (10/1000 μs) - Peak surge current it safely shunts before clamping voltage exceeds 25.2 V. |
| VC @ IPPM | 25.2 V - Clamped voltage seen by protected circuit under full-rated transient stress. |
| PPPM | 400 W - Peak pulse power handling capability for standardized 10/1000 μs waveform. |
| TJ max | +175 °C - Enables deployment in under-hood automotive and high-temperature industrial environments. |
| AEC-Q101 | Qualified - Validated for automotive electronic systems per stress test requirements including HTOL, TCT, and ESD. |
Pinout & Package
DO-41 (DO-204AL) molded epoxy package with axial leads; cathode indicated by color band on body. Matte tin-plated leads meet J-STD-002 solderability and JESD 201 Class 2 whisker resistance (HE3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to lower-potential side of protected line | Provides low VF (~3.5 V at 25 A) path during surge conduction; must be routed to ground or return rail. |
| Cathode | Current exit point in forward bias; marked with color band | Connected to protected line (e.g., 12 V rail); defines polarity-sensitive clamping direction for unidirectional operation. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure. |
| 400 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity without derating in typical PCB layouts. |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body electronics, and ADAS modules requiring zero-failure field performance. |
| Low clamping ratio (VC/VBR ≈ 1.33) | Minimizes overvoltage stress on downstream ICs such as microcontrollers and CAN transceivers during transients. |
| RoHS-compliant HE3 suffix | Meets automotive material compliance standards (JESD 201 Class 2) and UL 94 V-0 flammability rating. |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: 12 V battery-fed ECUs exposed to load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges >30 V. Use Value: Limits voltage to ≤25.2 V during 15.9 A transients, protecting 3.3 V/5 V regulators and MCU I/O from damage. |
Use Scenario: Analog output lines (e.g., 4–20 mA current loop) in factory automation sensors subject to cable ESD and motor noise. IC Role / Device Role / Timing Role: Series-connected TVS on signal line to ground, suppressing ±8 kV contact ESD (IEC 61000-4-2) and fast transients. Use Value: Sub-1 ns response ensures clamping occurs before sensitive op-amps or ADC inputs saturate or latch up. |
| Consumer Power Adapter Output Protection | Telecom DC Feeder Line Protection |
Use Scenario: Secondary-side 5 V/9 V outputs of wall adapters driving USB peripherals or IoT hubs. IC Role / Device Role / Timing Role: Final-stage TVS after DC-DC converter, guarding against plug-in surges and cross-talk from shared AC mains. Use Value: Withstands 400 W pulses without degradation, maintaining VWM = 15.3 V margin over nominal 12 V output. |
Use Scenario: -48 V DC feeder lines powering remote radio units (RRUs) in 4G/5G base stations. IC Role / Device Role / Timing Role: Bidirectional-capable variant not applicable; this unidirectional part used on positive rail with reverse-polarity protection diode. Use Value: 175 °C max junction temperature enables operation near power amplifiers without thermal shutdown. |
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; VC = 29.2 V @ 20.9 A; higher surge rating but larger footprint. | Better suited for higher-energy transients; requires PCB layout change due to SMC/SMB pad pattern. | Select SMBJ18A when system-level surge testing exceeds IEC 61000-4-5 Level 4 or when board space allows surface-mount upgrade. |
| 1.5KE18A | Same DO-41 package; 1500 W PPPM; VC = 27.7 V @ 54.3 A; higher clamping voltage and larger junction capacitance. | Designed for legacy high-energy telecom protection; less optimal for low-voltage logic interfaces. | Choose 1.5KE18A only if existing designs require backward compatibility with older 1.5 kW surge standards and can tolerate higher VC. |
Compared with SMBJ18A and 1.5KE18A, P4KE18CHE3/54 offers the optimal balance of AEC-Q101 qualification, compact DO-41 through-hole fit, and tight 25.2 V clamping-making it preferred for new automotive and industrial designs where reliability, size, and precise voltage limiting are jointly critical.
Availability
P4KE18CHE3/54 is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, consumer power adapters, and telecom DC feeders requiring stable component supply with AEC-Q101 assurance and RoHS compliance.
Supply support for P4KE18CHE3/54 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 validation.
The P4KE series targets cost-effective, high-volume transient protection for automotive, industrial, and consumer power systems-designed to replace older 1N6xxx families with improved consistency, tighter tolerances, and extended temperature capability.
FAQ
What is the breakdown voltage tolerance for P4KE18CHE3/54?
The P4KE18CHE3/54 has a specified breakdown voltage range of 17.1 V to 18.9 V at 1.0 mA test current, representing a ±5.6% tolerance about the nominal 18 V rating. This tight VBR window ensures predictable turn-on behavior across manufacturing lots and temperature extremes, critical for protecting 15 V-rated circuits without premature conduction.
Is P4KE18CHE3/54 suitable for bidirectional transient suppression?
No, P4KE18CHE3/54 is a unidirectional TVS diode, identifiable by its cathode band marking and specified VBR/VWM parameters for single-polarity operation. For bidirectional protection, Vishay offers the P4KE18CA variant; using P4KE18CHE3/54 in AC or floating applications would require external circuitry to manage reverse conduction.
What does the "HE3/54" suffix mean in P4KE18CHE3/54?
The "HE3" suffix denotes AEC-Q101 qualification and RoHS compliance with JESD 201 Class 2 whisker resistance; "54" specifies the preferred package code for 13-inch paper tape and reel packaging with 5500 units per reel. This distinguishes it from commercial-grade "E3/54" variants lacking automotive qualification.
How does P4KE18CHE3/54 perform under high-temperature operating conditions?
P4KE18CHE3/54 maintains full specification compliance from −55 °C to +175 °C junction temperature. Its power derating curve shows linear reduction from 100% at 25 °C to ~50% at 125 °C, and thermal resistance values (RθJL = 66 °C/W) confirm effective heat transfer to PCB traces or heatsinks-enabling use in engine bay or industrial drive enclosures.
Can P4KE18CHE3/54 replace older 1N6267A devices in existing designs?
Yes, P4KE18CHE3/54 is a direct functional and mechanical replacement for 1N6267A: both are DO-41 unidirectional TVS diodes rated for 18 V VBR, 400 W PPPM, and share identical pinout and mounting. P4KE18CHE3/54 adds AEC-Q101 qualification, tighter VBR tolerance, and improved surge life-requiring no PCB changes.
P4KE18CHE3/54 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
P4KE18CHE3/54 FAQ
1.How can I place an order for P4KE18CHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE18CHE3/54 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 P4KE18CHE3/54 reliable?
The price and inventory of P4KE18CHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE18CHE3/54 is usually 5 days.
3.What payment methods are accepted for P4KE18CHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE18CHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE18CHE3/54?
P4KE18CHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE18CHE3/54 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 P4KE18CHE3/54?
For technical support, including P4KE18CHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE18CHE3/54 requirements.
6.How does Aetrix verify that P4KE18CHE3/54 is sourced from the original manufacturer or authorized distributors?
All P4KE18CHE3/54 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 P4KE18CHE3/54 meets industry standards.
7.What is the process for return or replacement of P4KE18CHE3/54?
All P4KE18CHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE18CHE3/54, 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 P4KE18CHE3/54 part is unused and in its original packaging.
Return procedure for P4KE18CHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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