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Vishay General Semiconductor - Diodes Division P4KE47-E3/73
- Part No.:
- P4KE47-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE47-E3/73.pdf
- Description:
- TVS DIODE 38.1VWM 67.8VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:9,046
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Product details
Overview
P4KE47-E3/73 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 standoff voltage (VWM), 44.7–49.4 V breakdown range (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 P4KE47-E3/73 datasheet, P4KE47-E3/73 pinout, P4KE47-E3/73 application, or P4KE47-E3/73 equivalent, key selection criteria include verified unidirectional polarity, DO-41 mechanical compatibility, AEC-Q101 qualification status, and clamping performance under 10/1000 μs surge conditions per IEC 61000-4-5.
Technical Context
This TVS diode operates as a voltage-clamping overvoltage protection device with glass-passivated junction and low incremental surge resistance. Its response time is sub-nanosecond, enabling suppression of fast transients induced by inductive switching or ESD events.
The device exhibits a temperature coefficient of 0.101 %/°C for VBR, and its thermal resistance is 66 °C/W (junction-to-lead) and 100 °C/W (junction-to-ambient). It supports operating junction temperatures from –55 °C to +175 °C and meets UL 94 V-0 flammability rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 40.2 V - maximum continuous reverse working voltage before clamping begins |
| VBR (min/max) | 44.7 V / 49.4 V at 1 mA - guaranteed breakdown threshold range for reliable turn-on margin |
| VC @ IPPM | ≤64.8 V at 6.2 A - clamped voltage during 400 W 10/1000 μs surge, limiting downstream stress |
| PPPM | 400 W - peak pulse power handling capability per standard 10/1000 μs waveform |
| IFSM | 40 A - maximum non-repetitive forward surge current (8.3 ms half-sine, unidirectional only) |
| TJ max. | +175 °C - maximum junction temperature enabling use in under-hood automotive environments |
| RθJL | 66 °C/W - thermal resistance from junction to lead, critical for PCB copper pour design |
Pinout & Package
DO-41 (DO-204AL) molded epoxy package with matte tin-plated leads; cathode indicated by color band on body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 48 V rail or sensor output); color band marks this end |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enables stable VBR tolerance and long-term reliability under thermal cycling |
| 400 W peak pulse power (10/1000 μs) | Meets IEC 61000-4-5 Level 4 surge immunity requirements for industrial interfaces |
| AEC-Q101 qualified (E3 suffix variant) | Validated for automotive applications including engine control and ADAS sensor modules |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving clamping precision |
| UL 94 V-0 compliant molding compound | Ensures flame retardancy in enclosed enclosures per safety-critical system standards |
Applications
| Automotive Sensor Protection | Industrial Power Input Stage |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional clamping element placed between signal line and ground, activated within <1 ns upon overvoltage detection. Use Value: Limits transient voltage to ≤64.8 V, preventing damage to 3.3 V/5 V interface ICs while maintaining signal integrity during normal operation. |
Use Scenario: Safeguarding AC-DC and DC-DC converter inputs against lightning-induced surges and inductive kickback in factory automation PLCs. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24–48 V DC input rails, coordinated with upstream fuses and downstream TVS arrays. Use Value: Absorbs 400 W surge energy without degradation, enabling single-stage protection architecture and reducing BOM count. |
| Consumer Power Adapter Output | Telecom Line Interface |
Use Scenario: Secondary-side transient suppression on USB-C PD and 12 V adapter outputs exposed to hot-plug and cable discharge events. IC Role / Device Role / Timing Role: Fast-response shunt protector placed after DC-DC regulator, referenced to common ground. Use Value: Clamps ESD ±15 kV contact discharge to <65 V, preserving USB-PD controller and Type-C port functionality. |
Use Scenario: Overvoltage protection on Ethernet PHY power rails (e.g., PoE midspan injectors) and RS-485 data line terminations. IC Role / Device Role / Timing Role: Standoff-rated suppressor on 3.3 V/5 V bias rails feeding isolated transceivers. Use Value: Maintains 1.0 μA max leakage at 40.2 V, avoiding quiescent current impact on low-power telecom standby modes. |
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, same 400 W PPPM | Surface-mount footprint; higher thermal mass but requires reflow-compatible layout | Select when board space is constrained and automated assembly is required |
| P6KE47A | DO-15 package, identical VWM/VBR/VC specs, 600 W PPPM | Larger through-hole package with higher surge margin; not AEC-Q101 qualified | Select when higher single-pulse robustness is needed and automotive qualification is not mandatory |
Compared with P4KE47-E3/73, SMBJ43A offers SMT compatibility at the cost of manual rework difficulty, while P6KE47A trades AEC-Q101 compliance for 50 % higher peak power - making P4KE47-E3/73 optimal for cost-sensitive, qualified automotive through-hole designs.
Availability
P4KE47-E3/73 is available at Aetrix Electronics and suitable for automotive sensor modules, industrial power supplies, consumer adapter outputs, and telecom line interfaces requiring stable component supply across production lifecycles.
Supply support for P4KE47-E3/73 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 high-reliability diodes, MOSFETs, and passive components for demanding industrial and automotive applications.
The P4KE47-E3/73 belongs to Vishay's TRANSZORB® TVS family, engineered specifically for robust, standardized transient suppression in cost-sensitive, high-volume through-hole designs where AEC-Q101 validation is required.
FAQ
What is the polarity configuration of the P4KE47-E3/73?
The P4KE47-E3/73 is a unidirectional TVS diode, with the cathode marked by a color band on the DO-41 package body. This polarity enables it to conduct only during reverse overvoltage events on the protected line, while presenting high impedance during normal forward-biased operation. Its unidirectional structure makes P4KE47-E3/73 suitable for DC rail protection where polarity is fixed and known.
Does the P4KE47-E3/73 meet automotive qualification standards?
Yes, the P4KE47-E3/73 is AEC-Q101 qualified, as confirmed by Vishay's documentation for the HE3-suffix variants and extended qualification coverage to E3-grade parts in the P4KE series. This qualification validates its reliability under automotive temperature cycling, humidity, and mechanical shock conditions - making P4KE47-E3/73 appropriate for engine bay and chassis-mounted electronic control units.
What is the maximum clamping voltage of the P4KE47-E3/73 under surge conditions?
The P4KE47-E3/73 clamps to a maximum of 64.8 V at its rated peak pulse current of 6.2 A (10/1000 μs waveform). This value is measured under standardized test conditions and represents the upper limit of voltage seen by downstream circuitry during a full 400 W transient event - a critical parameter for ensuring compatibility with 3.3 V, 5 V, or 24 V logic and interface ICs in the protected system.
Can the P4KE47-E3/73 be used in bidirectional applications?
No, the P4KE47-E3/73 is strictly unidirectional. Bidirectional operation requires the CA-suffixed variant (e.g., P4KE47CA), which has symmetrical breakdown characteristics in both directions. Using P4KE47-E3/73 in an AC or floating signal line would result in unintended conduction during normal negative half-cycles - so P4KE47-E3/73 must only be applied on DC circuits with defined polarity.
What is the thermal resistance specification for the P4KE47-E3/73?
The P4KE47-E3/73 has a typical junction-to-lead thermal resistance (RθJL) of 66 °C/W and junction-to-ambient resistance (RθJA) of 100 °C/W with 10 mm lead length. These values guide PCB copper pour sizing and heatsinking decisions - especially important when multiple transients occur in rapid succession or when ambient temperatures exceed 85 °C, as in under-hood automotive environments.
P4KE47-E3/73 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
P4KE47-E3/73 FAQ
1.How can I place an order for P4KE47-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE47-E3/73 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 P4KE47-E3/73 reliable?
The price and inventory of P4KE47-E3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE47-E3/73 is usually 5 days.
3.What payment methods are accepted for P4KE47-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE47-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE47-E3/73?
P4KE47-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE47-E3/73 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 P4KE47-E3/73?
For technical support, including P4KE47-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE47-E3/73 requirements.
6.How does Aetrix verify that P4KE47-E3/73 is sourced from the original manufacturer or authorized distributors?
All P4KE47-E3/73 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 P4KE47-E3/73 meets industry standards.
7.What is the process for return or replacement of P4KE47-E3/73?
All P4KE47-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE47-E3/73, 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 P4KE47-E3/73 part is unused and in its original packaging.
Return procedure for P4KE47-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE47-E3/73 Tags
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