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Vishay General Semiconductor - Diodes Division P6KE18CHE3/54
- Part No.:
- P6KE18CHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE18CHE3/54.pdf
- Description:
- TVS DIODE 14.5VWM 26.5VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,339
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Product details
Overview
P6KE18CHE3/54 from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode designed for primary-level overvoltage protection on signal, power, and interface lines. It features a 18 V breakdown voltage (VBR min/max = 17.1–18.9 V), 15.3 V stand-off voltage (VWM), 25.2 V clamping voltage at 23.8 A peak pulse current, 600 W peak pulse power rating (10/1000 µs), and AEC-Q101 qualification for automotive-grade reliability - deployed in ECU power rail protection and sensor line surge suppression.
For engineers reviewing the P6KE18CHE3/54 datasheet, P6KE18CHE3/54 pinout, P6KE18CHE3/54 application, or P6KE18CHE3/54 equivalent, key selection criteria include verified bi-directional clamping performance, DO-204AC (DO-15) package compatibility with high-density PCB layouts, thermal resistance (RθJL = 20 °C/W), and compliance with UL 497B for telecom and industrial surge protection systems.
Technical Context
This device operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 MΩ leakage at VWM), then transitions to low-impedance conduction within <1 ns when transient voltage exceeds VBR. Its bi-directional symmetry ensures identical clamping behavior for positive and negative transients - critical for AC-coupled or floating signal paths.
The P6KE18CHE3/54 uses a glass-passivated silicon junction optimized for repetitive 10/1000 µs surge handling at 0.01% duty cycle. Its thermal design supports junction temperatures up to +175 °C, with derating starting above TA = 25 °C per Fig. 2, and lead temperature limits of 75 °C for continuous 5.0 W dissipation.
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 initiates in both directions |
| VWM | 15.3 V - maximum continuous working voltage before leakage exceeds 1.0 µA; sets safe operating margin below VBR |
| VC @ IPPM | 25.2 V at 23.8 A - maximum clamped voltage during 600 W transient, limiting downstream IC stress |
| PPPM | 600 W (10/1000 µs waveform) - industry-standard surge rating for automotive load-dump and ESD immunity |
| TJ max. | +175 °C - enables operation in under-hood automotive environments and industrial enclosures without derating |
| RθJL | 20 °C/W - low junction-to-lead thermal resistance supports reliable power dissipation into PCB copper |
| AEC-Q101 | Qualified - validated for automotive electronics per stress test requirements including HTOL, TCT, and ESD HBM ≥ 8 kV |
Pinout & Package
Package: DO-204AC (DO-15), molded epoxy case meeting UL 94 V-0 flammability rating; matte tin-plated leads solderable per J-STD-002; no polarity marking (bi-directional).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional surge conduction path | No functional distinction between terminals; either lead connects to protected line, other to ground or reference plane |
| Case | Non-conductive epoxy body | Provides mechanical robustness and electrical isolation; no thermal or electrical connection to die |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enables stable VBR tolerance (±5%) and long-term reliability under thermal cycling and humidity exposure |
| 600 W peak pulse power (10/1000 µs) | Withstands ISO 7637-2 Pulse 1/2a/5a surges and IEC 61000-4-5 Level 3 (1 kV/2 Ω) without degradation |
| AEC-Q101 qualification | Validated for automotive powertrain and body control modules requiring zero-failure field performance |
| Low clamping ratio (VC/VBR ≈ 1.33) | Minimizes overvoltage overshoot during fast transients, protecting 16 V-rated CAN transceivers and microcontrollers |
| RoHS-compliant HE3 suffix | Meets JESD 201 Class 2 whisker resistance and automotive material compliance (Vishay Doc. 99912) |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Suppresses load-dump transients (up to 60 V, 100 ms) on 12 V battery-fed ECUs and infotainment power inputs. IC Role / Device Role / Timing Role: Shunt-clamping TVS placed between VBAT and GND, responding within <1 ns to limit voltage to ≤25.2 V. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V LDOs and MCU power domains during alternator regulation failure. |
Use Scenario: Guards analog outputs and digital I/O lines of pressure/temperature sensors exposed to ESD and inductive switching noise. IC Role / Device Role / Timing Role: Bi-directional clamp across differential pairs (e.g., RS-485) or single-ended sensor supply lines. Use Value: Maintains signal integrity by clamping ±15 kV contact ESD (IEC 61000-4-2) without affecting 0–5 V measurement range. |
| Telecom Line Surge Suppression | Consumer Device USB/Power Port Protection |
Use Scenario: Installed on telephone line interface cards to absorb lightning-induced surges per UL 497B Category A/B requirements. IC Role / Device Role / Timing Role: Primary protection stage ahead of GDT or secondary TVS, handling >500 A short-duration spikes. Use Value: Achieves UL recognition QVGQ2 with 600 W rating and 175 °C junction capability for outdoor cabinet deployment. |
Use Scenario: Protects USB VBUS and DC input ports of smart speakers and set-top boxes against user-handling ESD and adapter surges. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF) shunt device placed directly at connector, grounded to chassis. Use Value: Enables Class 4 IEC 61000-4-2 (±15 kV air/±8 kV contact) compliance without signal distortion on 480 Mbps USB 2.0 lines. |
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 | Same VBR (18 V), but SMB package (DO-214AA); 600 W rating; higher IPPM (32.4 A); RθJA = 40 °C/W vs. 75 °C/W for P6KE18CHE3/54 | Better suited for surface-mount boards with limited through-hole real estate; lower thermal resistance to ambient | Select SMBJ18CA when board space is constrained and reflow assembly is used; verify PCB pad thermal relief for 5.0 W dissipation |
| 1.5KE18CA | Same DO-204AC package and VBR, but 1500 W rating (10/1000 µs); larger die; higher VC (29.2 V); not AEC-Q101 qualified | Used in non-automotive industrial mains-input protection where higher surge margin is required | Choose 1.5KE18CA only if 1500 W surge headroom is mandatory and AEC-Q101 compliance is unnecessary |
Compared with SMBJ18CA and 1.5KE18CA, the P6KE18CHE3/54 uniquely balances AEC-Q101 qualification, DO-204AC through-hole manufacturability, and precise 25.2 V clamping - making it optimal for cost-sensitive automotive and industrial control modules requiring proven field reliability.
Availability
P6KE18CHE3/54 is available at Aetrix Electronics and suitable for automotive ECU designs, industrial sensor nodes, telecom line cards, and consumer power port protection requiring stable component supply and long-term lifecycle support.
Supply support for P6KE18CHE3/54 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 P6KE series targets cost-effective, high-surge-capability transient protection for automotive, industrial, and telecom infrastructure - delivering AEC-Q101-qualified robustness in legacy through-hole packaging.
FAQ
What does the "HE3" suffix indicate in P6KE18CHE3/54?
The HE3 suffix in P6KE18CHE3/54 denotes RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance. It confirms the device meets automotive reliability standards and environmental compliance for lead-free soldering processes - distinct from the commercial-grade E3 variant. This makes P6KE18CHE3/54 suitable for under-hood and safety-critical applications where long-term stability is mandatory.
Is P6KE18CHE3/54 unidirectional or bidirectional, and how is polarity identified?
P6KE18CHE3/54 is a bi-directional TVS diode, meaning it provides symmetrical clamping for both positive and negative transients. Unlike unidirectional variants (e.g., P6KE18A), it has no cathode band or polarity marking - both leads are functionally identical. This eliminates orientation errors during manual or automated assembly and simplifies layout for AC-coupled or floating signal lines.
What is the maximum clamping voltage of P6KE18CHE3/54, and at what current is it specified?
The maximum clamping voltage (VC) of P6KE18CHE3/54 is 25.2 V, measured at its rated peak pulse current (IPPM) of 23.8 A using the standard 10/1000 µs waveform. This value is guaranteed per the Vishay datasheet (Doc. 88369, page 2) and defines the upper voltage limit imposed on protected circuitry during worst-case surge events - critical for ensuring downstream 3.3 V or 5 V ICs remain within absolute maximum ratings.
Can P6KE18CHE3/54 be used in place of P6KE18A in an existing design?
No - P6KE18CHE3/54 and P6KE18A are not interchangeable without validation. While both share the same VBR and package, P6KE18A is unidirectional with a cathode band and 3.5 V forward voltage, whereas P6KE18CHE3/54 is bi-directional with no polarity marking and symmetric conduction. Substituting one for the other may cause incorrect clamping behavior or open-circuit failure in DC-biased applications.
What is the thermal resistance and power derating behavior of P6KE18CHE3/54?
P6KE18CHE3/54 has a typical junction-to-lead thermal resistance (RθJL) of 20 °C/W and junction-to-ambient (RθJA) of 75 °C/W. Its 5.0 W steady-state power dissipation is rated at TL = 75 °C (lead temperature); derating begins linearly above 25 °C ambient per Figure 5 in the datasheet. For continuous operation, PCB copper area and lead length must be designed to maintain TJ ≤ 175 °C under worst-case ambient and power conditions.
P6KE18CHE3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AC, DO-15, 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):
- 22.6A
- Power - Peak Pulse:
- 600W
- 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-204AC (DO-15)
P6KE18CHE3/54 FAQ
1.How can I place an order for P6KE18CHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE18CHE3/54 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 P6KE18CHE3/54 reliable?
The price and inventory of P6KE18CHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE18CHE3/54 is usually 5 days.
3.What payment methods are accepted for P6KE18CHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE18CHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE18CHE3/54?
P6KE18CHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE18CHE3/54 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 P6KE18CHE3/54?
For technical support, including P6KE18CHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE18CHE3/54 requirements.
6.How does Aetrix verify that P6KE18CHE3/54 is sourced from the original manufacturer or authorized distributors?
All P6KE18CHE3/54 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 P6KE18CHE3/54 meets industry standards.
7.What is the process for return or replacement of P6KE18CHE3/54?
All P6KE18CHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P6KE18CHE3/54, 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 P6KE18CHE3/54 part is unused and in its original packaging.
Return procedure for P6KE18CHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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