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Vishay General Semiconductor - Diodes Division P4KE47HE3/73
- Part No.:
- P4KE47HE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE47HE3/73.pdf
- Description:
- TVS DIODE 38.1VWM 67.8VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:2,970
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Product details
Overview
P4KE47HE3/73 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 400 W peak pulse power (10/1000 μs), 40.2 V stand-off voltage (VWM), 44.7–49.4 V breakdown voltage (VBR at 1 mA), and clamps to ≤64.8 V at 6.2 A peak pulse current - deployed in automotive sensor protection and industrial power supply input stages.
For engineers reviewing the P4KE47HE3/73 datasheet, P4KE47HE3/73 pinout, P4KE47HE3/73 application, or P4KE47HE3/73 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 per IEC 61000-4-5.
Technical Context
This device operates as a unidirectional avalanche diode with glass-passivated junction, optimized for fast response (<1 ns) to ESD and lightning-induced surges. Its 66 °C/W junction-to-lead thermal resistance enables reliable operation up to 175 °C junction temperature, and it meets JESD 22-B106 solderability (275 °C, 10 s).
The P4KE47HE3/73 is rated for 40 A non-repetitive forward surge current (8.3 ms half-sine), exhibits 1.0 μA max reverse leakage at 40.2 V, and maintains stable breakdown voltage with +0.101 %/°C temperature coefficient - confirming suitability for high-reliability automotive and industrial environments where thermal stability and surge margin are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 40.2 V - maximum continuous reverse operating voltage before conduction begins |
| VBR min/max | 44.7 V / 49.4 V at 1 mA - guaranteed avalanche onset range for design margining |
| VC @ IPPM | ≤64.8 V at 6.2 A - clamped voltage during 10/1000 μs surge, defining protected circuit stress |
| PPPM | 400 W - peak transient power handling capability per standard waveform |
| TJ max | +175 °C - enables use in under-hood automotive and high-ambient industrial locations |
| RθJL | 66 °C/W - low thermal resistance supports sustained surge duty in compact layouts |
| AEC-Q101 | Qualified - validated for automotive electronics per stress test requirements |
Pinout & Package
Package: DO-41 (DO-204AL), axial-leaded, molded epoxy body with matte tin-plated leads; RoHS-compliant and qualified to AEC-Q101. Cathode indicated by color band on body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line; conducts during forward surge events |
| Cathode | Reverse-biased clamping terminal | Connected to higher-potential side; avalanches into conduction when VWM exceeded |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable, repeatable avalanche characteristics and long-term reliability under repeated surge stress |
| 400 W peak pulse power (10/1000 μs) | Provides robust protection against IEC 61000-4-5 Level 3/4 surges without degradation |
| AEC-Q101 qualification | Validates suitability for automotive applications including engine control, ADAS sensors, and body electronics |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., inductive switch-off) |
| 175 °C max junction temperature | Supports operation in high-ambient environments such as power converters and motor drives |
Applications
| Automotive Sensor Protection | Industrial Power Supply Input |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and temperature/pressure sensors from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS placed across sensor supply rail to clamp transients before they reach sensitive analog front-ends. Use Value: Limits voltage to ≤64.8 V during 6.2 A surges, preventing latch-up or damage to 5 V/3.3 V sensor ICs while maintaining AEC-Q101 compliance. | Use Scenario: Safeguarding AC-DC and DC-DC converter inputs against lightning-induced surges and switching transients in factory automation systems. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 48 V or 24 V input rails upstream of rectifier and filter stage. Use Value: Absorbs 400 W transient energy without failure, preserving downstream MOSFETs and controllers during 10/1000 μs line surges per IEC 61000-4-5. |
| Telecom Line Interface | Consumer Device USB/Power Port |
Use Scenario: Shielding Ethernet PHY interfaces and PoE injectors from induced surges on outdoor cabling in telecom base stations. IC Role / Device Role / Timing Role: Secondary-level TVS on data pair and power pair, coordinated with primary GDT or MOV protection. Use Value: Fast <1 ns response ensures clamping before transient propagates into PHY IC, with 40.2 V VWM compatible with 44 V PoE+ operating range. | Use Scenario: Surge suppression on USB-C power delivery inputs and auxiliary charging ports in smart home hubs and portable medical devices. IC Role / Device Role / Timing Role: Standoff-rated TVS on VBUS line to prevent overvoltage damage during hot-plug or adapter fault events. Use Value: Clamps to 64.8 V at 6.2 A while maintaining <1 μA leakage at 40.2 V, ensuring no impact on standby power budget or port detection logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43A | DO-214AA package; 43 V VWM, 47.8–52.8 V VBR, 69.4 V VC @ 5.8 A; 600 W PPPM | Higher power rating but larger footprint; surface-mount only | Select SMBJ43A when board space allows SMT placement and higher surge margin is required. |
| 1.5KE47A | DO-201AD package; identical VWM/VBR/VC specs; 1500 W PPPM; 100 A IFSM | Higher surge capacity and ruggedness; through-hole but larger body than DO-41 | Choose 1.5KE47A for legacy designs requiring >400 W surge headroom or higher IFSM tolerance. |
Compared with SMBJ43A and 1.5KE47A, the P4KE47HE3/73 offers optimal balance of AEC-Q101 qualification, DO-41 axial form factor, and 400 W surge capability - making it preferred for cost-sensitive, high-volume automotive and industrial through-hole assemblies where thermal derating and lead-forming flexibility matter.
Availability
P4KE47HE3/73 is available at Aetrix Electronics and suitable for automotive sensor modules, industrial power supply inputs, and telecom line interface circuits requiring stable component supply and AEC-Q101 assurance.
Supply support for P4KE47HE3/73 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-grade validation.
The P4KE series is part of Vishay's TRANSZORB® TVS family, engineered specifically for robust, standardized transient suppression in harsh-environment applications including automotive, industrial, and telecom infrastructure.
FAQ
What is the maximum clamping voltage of the P4KE47HE3/73 under surge conditions?
The P4KE47HE3/73 clamps to a maximum of 64.8 V when subjected to its rated 6.2 A peak pulse current (IPPM) using the standard 10/1000 μs waveform. This value is measured per Figure 1 in the Vishay datasheet 88365 and defines the upper voltage limit imposed on protected circuitry during transient events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is the P4KE47HE3/73 suitable for automotive applications?
Yes, the P4KE47HE3/73 is AEC-Q101 qualified, as confirmed in the Vishay datasheet revision 16-Sep-2021. Its construction - including glass-passivated junction, DO-41 molding meeting UL 94 V-0, and HE3 suffix denoting AEC-Q101 compliance - validates its use in automotive subsystems such as body control modules, sensor interfaces, and infotainment power rails where reliability under thermal and surge stress is mandatory.
What does the "HE3" suffix indicate in P4KE47HE3/73?
The "HE3" suffix in P4KE47HE3/73 denotes RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance. Per Vishay's ordering information, HE3 parts undergo enhanced process controls for automotive-grade reliability, distinguishing them from commercial-grade E3 variants - making P4KE47HE3/73 appropriate for mission-critical applications demanding extended lifetime and thermal cycling endurance.
How does the P4KE47HE3/73 compare to bidirectional TVS diodes like P4KE47CA?
The P4KE47HE3/73 is unidirectional, meaning it protects only against reverse-polarity transients and conducts forward current during positive surges - requiring correct anode/cathode orientation. In contrast, P4KE47CA is bidirectional with symmetrical clamping in both directions and no polarity marking. Use P4KE47HE3/73 where DC bias exists (e.g., power rails); choose P4KE47CA for AC-coupled or floating signal lines like RS-485 or antenna feeds.
What is the thermal resistance specification for the P4KE47HE3/73?
The P4KE47HE3/73 has a typical junction-to-lead thermal resistance (RθJL) of 66 °C/W, as specified in the Vishay datasheet section "Thermal Characteristics." This parameter enables accurate thermal modeling when mounted with standard lead lengths (e.g., 10 mm), supporting safe operation up to its 175 °C maximum junction temperature - especially important in high-power-density industrial power supplies where ambient temperatures exceed 85 °C.
P4KE47HE3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AL, DO-41, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 38.1V
- Voltage - Breakdown (Min):
- 42.3V
- Voltage - Clamping (Max) @ Ipp:
- 67.8V
- Current - Peak Pulse (10/1000µs):
- 5.9A
- 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)
P4KE47HE3/73 FAQ
1.How can I place an order for P4KE47HE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE47HE3/73 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 P4KE47HE3/73 reliable?
The price and inventory of P4KE47HE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE47HE3/73 is usually 5 days.
3.What payment methods are accepted for P4KE47HE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE47HE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE47HE3/73?
P4KE47HE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE47HE3/73 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 P4KE47HE3/73?
For technical support, including P4KE47HE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE47HE3/73 requirements.
6.How does Aetrix verify that P4KE47HE3/73 is sourced from the original manufacturer or authorized distributors?
All P4KE47HE3/73 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 P4KE47HE3/73 meets industry standards.
7.What is the process for return or replacement of P4KE47HE3/73?
All P4KE47HE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE47HE3/73, 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 P4KE47HE3/73 part is unused and in its original packaging.
Return procedure for P4KE47HE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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