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Vishay General Semiconductor - Diodes Division P4KE20AHE3/54
- Part No.:
- P4KE20AHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE20AHE3/54.pdf
- Description:
- TVS DIODE 17.1VWM 27.7VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:7,875
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Product details
Overview
P4KE20AHE3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for circuit-level ESD and surge protection. It features 20 V breakdown voltage (VBR min/max = 19.0–21.0 V at 1.0 mA), 17.1 V stand-off voltage (VWM), clamps transients to ≤27.7 V at 14.4 A peak pulse current (10/1000 μs), and delivers 400 W peak pulse power. Used to protect MOSFET gates, sensor signal lines, and microcontroller I/O in automotive and industrial power supplies.
For engineers reviewing the P4KE20AHE3/54 datasheet, P4KE20AHE3/54 pinout, P4KE20AHE3/54 application, or P4KE20AHE3/54 equivalent, key selection criteria include its AEC-Q101 qualification, 175 °C max junction temperature, DO-41 mechanical compatibility, and verified clamping performance under 10/1000 μs surge conditions - critical for robust front-end protection in automotive ECUs and industrial PLCs.
Technical Context
This device operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its 19.0–21.0 V breakdown range. Its glass-passivated junction ensures stable VBR tolerance (±5 %) and low incremental surge resistance, enabling consistent clamping at 27.7 V under 14.4 A transient current. The 1.0 mA test current and 1.0 μA max reverse leakage at 17.1 V support low-power standby integrity.
Thermal design relies on RθJL = 66 °C/W (junction-to-lead) and RθJA = 100 °C/W (junction-to-ambient, LLead = 10 mm), with derating starting above 25 °C ambient. It sustains 40 A non-repetitive forward surge (8.3 ms half-sine) and handles 1.5 W steady-state power dissipation at TL = 75 °C - confirming suitability for intermittent surge events in DC power rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 19.0 V / 21.0 V at 1.0 mA - defines precise avalanche initiation threshold for reliable overvoltage triggering |
| VWM | 17.1 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | ≤27.7 V at 14.4 A (10/1000 μs) - clamping voltage limiting downstream component stress during surge |
| PPPM | 400 W - peak transient energy absorption capacity without failure under standardized waveform |
| TJ max | +175 °C - enables operation in under-hood automotive environments and high-temperature industrial enclosures |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Package | DO-41 (DO-204AL) - industry-standard axial leaded package with UL 94 V-0 molded epoxy body |
Pinout & Package
DO-41 (DO-204AL) package: axial-leaded, cylindrical epoxy body with matte tin-plated leads; cathode indicated by color band; meets J-STD-002 solderability and JESD 201 Class 2 whisker resistance (HE3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path / surge return path | Connected to system ground or low-impedance return node during transient clamp event |
| Cathode | Avalanche breakdown terminal / protected line connection | Connected to the line being protected (e.g., 24 V rail, sensor output); color-banded end |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR tolerance (±5 %) and long-term parameter drift <0.1 %/1000 h under bias |
| 400 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity without external series impedance |
| AEC-Q101 qualification | Validates reliability for automotive applications including engine control, body electronics, and ADAS sensors |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes voltage overshoot during fast transients, protecting 3.3 V/5 V logic interfaces downstream |
| UL 94 V-0 molding compound | Meets flame-retardancy requirements for enclosed industrial and transportation equipment |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: 12 V/24 V battery-supplied ECUs exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp surges before they reach PMIC or MCU input. Use Value: Clamps 14.4 A transients to ≤27.7 V, preventing latch-up or gate oxide damage in downstream 30 V-rated regulators. |
Use Scenario: Analog output lines of pressure/temperature sensors in factory automation systems. IC Role / Device Role / Timing Role: TVS mounted at connector entry point to suppress ESD (IEC 61000-4-2 ±8 kV contact) and inductive kickback. Use Value: Sub-30 ns response time limits voltage excursion to safe levels for 5 V ADC inputs and op-amp buffers. |
| Consumer Power Adapter Input Stage | Telecom Line Card Surge Protection |
|
Use Scenario: Secondary-side DC output of AC/DC adapters powering USB-C PD devices. IC Role / Device Role / Timing Role: Standoff-rated TVS across +VOUT/GND to absorb coupling transients from primary-side switching noise. Use Value: 17.1 V VWM allows uninterrupted operation during normal 19–20 V output, while clamping faults to 27.7 V. |
Use Scenario: Low-voltage signaling lines (e.g., RS-485, CAN) in telecom base station backplanes. IC Role / Device Role / Timing Role: Bidirectional protection not applicable; P4KE20AHE3/54 used on DC bias rails feeding transceivers. Use Value: AEC-Q101 qualification supports extended field life in telecom infrastructure with thermal cycling up to 175 °C junction. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ20A | DO-214AA package; 200 W PPPM; lower IPPM (12.3 A); surface-mount only | Requires PCB rework for SMT layout; unsuitable for through-hole legacy designs | Select SMBJ20A only when board space is constrained and assembly is fully SMT-capable. |
| P4KE20CA | Bidirectional variant; same VBR range but symmetric clamping in both polarities; no cathode marking | Required for AC-coupled or floating signal lines where polarity reversal occurs (e.g., audio, RS-232) | Choose P4KE20CA instead of P4KE20AHE3/54 only when bidirectional protection is explicitly needed. |
Compared with SMBJ20A and P4KE20CA, the P4KE20AHE3/54 offers higher surge rating (400 W vs. 200 W), through-hole DO-41 compatibility for manual repair and high-reliability power stages, and AEC-Q101 validation - making it optimal for automotive and industrial through-hole surge protection where peak energy handling and qualification are prioritized.
Availability
P4KE20AHE3/54 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom power supply designs requiring stable component supply with full traceability and long-lifecycle support.
Supply support for P4KE20AHE3/54 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, and protection devices with emphasis on reliability and automotive qualification.
The P4KE20AHE3/54 belongs to the TRANSZORB® family of TVS diodes, engineered specifically for high-energy transient suppression in harsh environments including automotive, industrial, and telecom infrastructure.
FAQ
What is the breakdown voltage tolerance for P4KE20AHE3/54?
The P4KE20AHE3/54 has a specified breakdown voltage range of 19.0 V to 21.0 V at 1.0 mA test current, corresponding to a ±5 % tolerance. This tight VBR window ensures predictable turn-on behavior across production lots and temperature ranges, critical for maintaining consistent clamping margins in safety-critical automotive circuits where the P4KE20AHE3/54 is deployed.
Is P4KE20AHE3/54 suitable for protecting 24 V automotive systems?
Yes, the P4KE20AHE3/54 is rated for 17.1 V stand-off voltage (VWM) and clamps transients to ≤27.7 V, making it appropriate for 24 V nominal systems subject to ISO 7637-2 pulses and load dump events. Its AEC-Q101 qualification, 175 °C junction rating, and 400 W peak pulse capability confirm suitability for under-hood and chassis-mounted automotive applications using the P4KE20AHE3/54.
How does the HE3 suffix affect P4KE20AHE3/54?
The HE3 suffix on P4KE20AHE3/54 indicates RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance. Unlike the commercial-grade E3 version, the HE3 variant undergoes additional automotive reliability testing including HTOL, temperature cycling, and unbiased HAST - ensuring long-term stability in automotive and industrial deployments where the P4KE20AHE3/54 is used.
What is the maximum clamping voltage of P4KE20AHE3/54 under surge conditions?
The P4KE20AHE3/54 clamps to a maximum of 27.7 V when subjected to its rated 14.4 A peak pulse current (10/1000 μs waveform). This value is measured per JEDEC standards and represents the upper limit of voltage seen by downstream components during worst-case surge events, directly informing safe margin design for ICs protected by the P4KE20AHE3/54.
Can P4KE20AHE3/54 be used in place of P4KE20A-E3/54?
Yes - P4KE20AHE3/54 and P4KE20A-E3/54 share identical electrical specifications and DO-41 packaging, differing only in qualification level: HE3 is AEC-Q101 qualified, while E3 is commercial grade. For automotive or high-reliability industrial use, the P4KE20AHE3/54 is the preferred choice; for cost-sensitive consumer applications, P4KE20A-E3/54 may suffice. Both variants function identically as the P4KE20AHE3/54 in circuit operation.
P4KE20AHE3/54 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):
- 17.1V
- Voltage - Breakdown (Min):
- 19V
- Voltage - Clamping (Max) @ Ipp:
- 27.7V
- Current - Peak Pulse (10/1000µs):
- 14.4A
- 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)
P4KE20AHE3/54 FAQ
1.How can I place an order for P4KE20AHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE20AHE3/54 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 P4KE20AHE3/54 reliable?
The price and inventory of P4KE20AHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE20AHE3/54 is usually 5 days.
3.What payment methods are accepted for P4KE20AHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE20AHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE20AHE3/54?
P4KE20AHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE20AHE3/54 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 P4KE20AHE3/54?
For technical support, including P4KE20AHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE20AHE3/54 requirements.
6.How does Aetrix verify that P4KE20AHE3/54 is sourced from the original manufacturer or authorized distributors?
All P4KE20AHE3/54 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 P4KE20AHE3/54 meets industry standards.
7.What is the process for return or replacement of P4KE20AHE3/54?
All P4KE20AHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE20AHE3/54, 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 P4KE20AHE3/54 part is unused and in its original packaging.
Return procedure for P4KE20AHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE20AHE3/54 Tags
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