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Vishay General Semiconductor - Diodes Division P4KE18AHE3/54
- Part No.:
- P4KE18AHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE18AHE3/54.pdf
- Description:
- TVS DIODE 15.3VWM 25.2VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:2,663
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Product details
Overview
P4KE18AHE3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for clamping voltage transients on power and signal lines. It features 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 reverse leakage at VWM, and 25.2 V maximum clamping voltage at 15.9 A peak pulse current - used to protect MOSFETs and ICs in automotive and industrial power supplies.
For engineers reviewing the P4KE18AHE3/54 datasheet, P4KE18AHE3/54 pinout, P4KE18AHE3/54 application, or P4KE18AHE3/54 equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, DO-41 mechanical data, clamping performance under 10/1000 μs surge, and direct alternatives with documented parameter divergence.
Technical Context
This device operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its breakdown threshold (17.1–18.9 V). Its glass-passivated junction enables fast response (<1 ns), low incremental surge resistance, and stable clamping at 25.2 V under 15.9 A 10/1000 μs pulses - critical for protecting downstream components from inductive switching spikes.
Rated for 400 W peak pulse power and 1.5 W steady-state dissipation, it supports operation from –55 °C to +175 °C junction temperature. The HE3 suffix confirms AEC-Q101 qualification, matte tin-plated leads compliant with J-STD-002, and JESD 201 Class 2 whisker resistance - making it suitable for automotive ECU and body control module designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 17.1 V / 18.9 V at 1.0 mA - defines precise avalanche initiation window for reliable overvoltage triggering |
| VWM | 15.3 V - maximum continuous reverse operating voltage before leakage rises above 1.0 μA |
| VC @ IPPM | 25.2 V at 15.9 A - clamping voltage during 10/1000 μs surge; ensures protected IC stays below absolute max rating |
| PPPM | 400 W - peak transient energy absorption capability per single pulse, derated above 25 °C |
| IFSM | 40 A - non-repetitive forward surge current rating (8.3 ms half-sine), relevant for fault-current limiting |
| TJ max | +175 °C - enables use in under-hood automotive environments without thermal derating penalties |
| Package | DO-41 (DO-204AL) - axial-leaded through-hole package with UL 94 V-0 epoxy molding and 0.350 g unit weight |
Pinout & Package
DO-41 (DO-204AL) package: axial-leaded, glass-passivated silicon junction in molded epoxy body. Cathode indicated by color band on one end; anode is unmarked lead. Leads are matte tin-plated, solderable per J-STD-002, rated for 275 °C dip soldering (10 s max).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked lead) | Forward conduction terminal | Connects to lower-potential side of protected line; conducts during forward faults or bias conditions |
| Cathode (banded lead) | Avalanche clamping terminal | Connected to higher-potential side; initiates reverse conduction when VRM > VBR, shunting surge to ground |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enables <1 ns response time and stable VBR tolerance across temperature and life cycle |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive applications including engine control, lighting, and ADAS sensor interfaces |
| 400 W peak pulse power (10/1000 μs) | Handles typical load-dump and ISO 7637-2 Pulse 1/2a/5a transients without degradation |
| UL 94 V-0 epoxy molding | Meets flammability requirements for enclosed automotive and industrial enclosures |
| JESD 201 Class 2 whisker resistance | Prevents tin whisker growth under thermal cycling, ensuring long-term reliability in harsh environments |
Applications
| Automotive Power Supply Protection | Industrial PLC Input Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and ground to clamp transients above 15.3 V. Use Value: Clamps to 25.2 V at 15.9 A, keeping downstream LDOs and microcontrollers within safe operating area during ISO 16750-2 tests. |
Use Scenario: Shielding 24 V digital input channels in programmable logic controllers from field-wiring surges. IC Role / Device Role / Timing Role: Standoff protection on optocoupler input side, absorbing inductive kickback from solenoid drivers. Use Value: 1.0 μA leakage at 15.3 V prevents false triggering; 400 W pulse rating handles repetitive 10/1000 μs events per IEC 61000-4-5. |
| Consumer Appliance Motor Control | Telecom Power Interface |
|
Use Scenario: Safeguarding H-bridge gate drivers in washing machine motor inverters against back-EMF spikes. IC Role / Device Role / Timing Role: Parallel clamping device across DC bus rails, triggered only during overvoltage events. Use Value: 175 °C max junction temperature allows placement near heat-generating IGBTs without thermal shutdown. |
Use Scenario: Front-end surge suppression on -48 V telecom power feeds entering base station equipment. IC Role / Device Role / Timing Role: Primary protection stage before DC/DC converters, absorbing lightning-induced common-mode transients. Use Value: 25.2 V clamping voltage ensures secondary protection devices (e.g., polymer PTCs) activate only after primary energy is absorbed. |
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; 18 V VBR; 600 W PPPM; 30 A IPPM; 28.0 V VC | Surface-mount alternative with higher surge rating but larger footprint and no AEC-Q101 certification | Select SMBJ18A for space-constrained PCBs where SMT assembly is preferred and automotive qualification is not required. |
| P4KE18A-E3/54 | Same DO-41 package and electrical specs, but commercial-grade (non-AEC-Q101); identical VBR, VWM, VC, and PPPM | Lacks AEC-Q101 qualification and JESD 201 Class 2 whisker resistance; intended for industrial/commercial use only | Choose P4KE18A-E3/54 for cost-sensitive non-automotive applications where full automotive reliability is unnecessary. |
Compared with P4KE18AHE3/54, SMBJ18A offers higher surge capacity in SMT form but lacks automotive qualification, while P4KE18A-E3/54 matches all electrical parameters but omits AEC-Q101 and enhanced whisker resistance - making P4KE18AHE3/54 the sole choice for production automotive systems requiring both performance and compliance.
Availability
P4KE18AHE3/54 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controllers, and consumer appliance motor drives requiring stable component supply with AEC-Q101 traceability and long-lifecycle support.
Supply support for P4KE18AHE3/54 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 passive components with emphasis on reliability and automotive-grade validation.
The P4KE series belongs to Vishay's TRANSZORB® TVS family, engineered specifically for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where failure modes must be mitigated without compromising signal integrity.
FAQ
What is the breakdown voltage range for P4KE18AHE3/54?
The P4KE18AHE3/54 has a guaranteed breakdown voltage range of 17.1 V to 18.9 V at 1.0 mA test current, measured per ANSI/IEEE C62.35 standards. This tight VBR window ensures consistent clamping behavior across production lots and temperature extremes, directly supporting design margin calculations for protected circuits.
Is P4KE18AHE3/54 suitable for automotive applications?
Yes, P4KE18AHE3/54 is AEC-Q101 qualified (confirmed by HE3 suffix), features JESD 201 Class 2 whisker resistance, and operates from –55 °C to +175 °C - meeting critical requirements for engine control modules, body electronics, and ADAS sensor interfaces. Its DO-41 package supports manual and wave-solder reflow profiles used in automotive manufacturing.
What is the maximum clamping voltage of P4KE18AHE3/54 under surge conditions?
The P4KE18AHE3/54 clamps to a maximum of 25.2 V at 15.9 A peak pulse current using the standardized 10/1000 μs waveform. This value is measured per Figure 1 and Table 1 in Vishay Document 88365 and defines the upper voltage limit imposed on protected circuitry during transient events.
How does the HE3 suffix differ from E3 in P4KE18AHE3/54?
The HE3 suffix in P4KE18AHE3/54 denotes AEC-Q101 qualification and JESD 201 Class 2 whisker resistance, whereas E3 indicates RoHS-compliant commercial grade only. Both share identical electrical specs and DO-41 packaging, but HE3 adds automotive reliability validation - including temperature cycling, humidity testing, and mechanical shock compliance.
Can P4KE18AHE3/54 be used in bidirectional configurations?
No, P4KE18AHE3/54 is unidirectional only, as indicated by the "A" suffix (not "CA"). Bidirectional variants like P4KE18CA exist but have different VBR symmetry, leakage behavior, and no cathode marking. Using P4KE18AHE3/54 in reverse-biased AC paths would result in unintended forward conduction and failure.
P4KE18AHE3/54 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:
- -
- 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)
P4KE18AHE3/54 FAQ
1.How can I place an order for P4KE18AHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE18AHE3/54 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 P4KE18AHE3/54 reliable?
The price and inventory of P4KE18AHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE18AHE3/54 is usually 5 days.
3.What payment methods are accepted for P4KE18AHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE18AHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE18AHE3/54?
P4KE18AHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE18AHE3/54 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 P4KE18AHE3/54?
For technical support, including P4KE18AHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE18AHE3/54 requirements.
6.How does Aetrix verify that P4KE18AHE3/54 is sourced from the original manufacturer or authorized distributors?
All P4KE18AHE3/54 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 P4KE18AHE3/54 meets industry standards.
7.What is the process for return or replacement of P4KE18AHE3/54?
All P4KE18AHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE18AHE3/54, 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 P4KE18AHE3/54 part is unused and in its original packaging.
Return procedure for P4KE18AHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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