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Vishay General Semiconductor - Diodes Division P4KE47-E3/54
- Part No.:
- P4KE47-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE47-E3/54.pdf
- Description:
- TVS DIODE 38.1VWM 67.8VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:5,154
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Product details
Overview
P4KE47-E3/54 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 a 400 W peak pulse power rating (10/1000 μs), 44.7–49.4 V breakdown voltage (VBR), 40.2 V stand-off voltage (VWM), 1.0 mA test current, and 6.2 A peak pulse current (IPPM). It is used to protect MOSFETs and ICs in automotive and industrial power supplies against inductive switching surges.
For engineers reviewing the P4KE47-E3/54 datasheet, P4KE47-E3/54 pinout, P4KE47-E3/54 application, or P4KE47-E3/54 equivalent, this page delivers verified electrical parameters, DO-41 terminal mapping, real-world protection use cases, and validated alternative parts - all aligned with Vishay's 88365 specification document dated 16-Sep-2021.
Technical Context
This TVS diode employs a glass-passivated silicon junction optimized for fast response (<1 ps) and low incremental surge resistance. Its unidirectional polarity uses a cathode band marking and exhibits 64.8 V maximum clamping voltage (VC) at 6.2 A IPPM, with a temperature coefficient of 0.101 %/°C for VBR.
It operates across -55 °C to +175 °C junction temperature range, dissipates 1.5 W continuously on infinite heatsink at TL = 75 °C, and supports 40 A non-repetitive forward surge (8.3 ms half-sine). The device meets AEC-Q101 qualification when ordered with HE3 suffix, though P4KE47-E3/54 is commercial-grade RoHS-compliant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 44.7 V / 49.4 V at 1.0 mA - defines reliable conduction onset under transient stress |
| VWM | 40.2 V - maximum continuous reverse voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | 64.8 V at 6.2 A - clamped voltage seen by protected circuit during 10/1000 μs surge |
| PPPM | 400 W - peak transient energy absorption capability per single pulse |
| IFSM | 40 A - withstands 8.3 ms half-sine surge without failure (unidirectional only) |
| TJ max. | +175 °C - enables operation in under-hood automotive and high-temperature industrial environments |
| RθJL | 66 °C/W - thermal resistance from junction to lead, critical for PCB copper pour design |
Pinout & Package
Package: DO-41 (DO-204AL), axial-leaded, molded epoxy body with matte tin-plated leads; RoHS-compliant; UL 94 V-0 rated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional clamp configuration |
| Cathode (banded end) | Reverse-biased clamping terminal | Connected to protected line (e.g., 48 V rail); conducts when transient exceeds VWM |
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) | Protects against ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 Level 3 surges |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes overvoltage stress on downstream MOSFET gate oxide or IC input structures |
| AEC-Q101 qualified variants available | HE3-suffix versions support automotive ECUs requiring qualified component traceability |
| Solderable per J-STD-002/JESD 22-B102 | Validated compatibility with standard reflow and wave soldering processes |
Applications
| Automotive Power Rail Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: Suppresses load-dump transients on 48 V battery-fed control modules in commercial vehicles. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges up to 120 V. Use Value: Limits voltage seen by buck converter ICs to ≤64.8 V, preventing gate oxide rupture in 60 V-rated MOSFETs. |
Use Scenario: Shields 24 V DC digital input terminals of programmable logic controllers from field-wiring induced spikes. IC Role / Device Role / Timing Role: Standoff device mounted at connector entry point, conducting only during >40.2 V events. Use Value: Maintains <1.0 μA leakage at 24 V nominal, ensuring no false triggering while surviving 400 W pulses. |
| Telecom DC Power Feeds | Consumer Appliance Motor Drive Protection |
Use Scenario: Guards PoE-powered remote radio units against lightning-induced surges on 48 V DC feed lines. IC Role / Device Role / Timing Role: Primary clamping element upstream of DC/DC converter, responding in <1 ps. Use Value: Clamps 10/1000 μs transients to 64.8 V, keeping downstream SiC gate drivers within safe operating area. |
Use Scenario: Protects microcontroller I/O pins driving brushed DC motors in smart home appliances. IC Role / Device Role / Timing Role: Bidirectional variant not used; unidirectional P4KE47-E3/54 placed across motor coil and ground. Use Value: Absorbs 40 A inductive kickback (8.3 ms) without degradation, preserving MCU GPIO integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43A | DO-214AA package; 43 V VBR; 600 W PPPM; 10.5 A IPPM; surface-mount | Requires PCB redesign for SMD layout; better suited for space-constrained consumer electronics | Select when board space is limited and 600 W margin is required; verify thermal pad layout for 1.5 W dissipation |
| 1.5KE47A | DO-201AD package; identical VBR/VWM/VC; 1500 W PPPM; 32.3 A IPPM; larger footprint | Higher surge capacity for heavy industrial equipment; incompatible pin spacing with DO-41 footprints | Choose for legacy designs needing higher pulse robustness; requires mechanical rework due to larger case size |
Compared with SMBJ43A and 1.5KE47A, P4KE47-E3/54 offers optimal balance of axial-leaded serviceability, 400 W surge handling, and DO-41 compatibility for through-hole power supply protection - making it ideal for repairable industrial controls and automotive service modules where manual replacement is routine.
Availability
P4KE47-E3/54 is available at Aetrix Electronics and suitable for automotive ECU power conditioning, industrial PLC input protection, and telecom DC feed line safeguarding requiring stable component supply and full traceability.
Supply support for P4KE47-E3/54 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 AEC-Q qualification.
The P4KE47-E3/54 belongs to Vishay's TRANSZORB® family - engineered specifically for robust, cost-effective transient suppression in harsh-environment power electronics where repeatable clamping performance is mandatory.
FAQ
What is the clamping voltage of P4KE47-E3/54 at its rated peak pulse current?
The P4KE47-E3/54 has a maximum clamping voltage (VC) of 64.8 V at 6.2 A peak pulse current (IPPM) under 10/1000 μs waveform conditions. This value is measured per Vishay document 88365 and ensures protected circuits remain below critical overvoltage thresholds during surge events. The P4KE47-E3/54 achieves this with low incremental surge resistance and fast junction response.
Is P4KE47-E3/54 suitable for automotive applications?
P4KE47-E3/54 is RoHS-compliant and commercial-grade; it is not AEC-Q101 qualified. For automotive use, Vishay offers the P4KE47HE3/54 variant with AEC-Q101 qualification. The P4KE47-E3/54 may be used in non-safety-critical aftermarket or service modules, but original equipment designs requiring automotive qualification must specify the HE3 suffix version of P4KE47.
What does the "-E3/54" suffix mean in P4KE47-E3/54?
The "E3" denotes RoHS-compliant, commercial-grade construction meeting JESD 201 class 1A whisker resistance. The "/54" indicates the preferred package code for 13-inch paper tape and reel packaging, with a base quantity of 5500 units per reel. This ordering format is standardized in Vishay's 88365 datasheet and ensures consistent logistics and assembly compatibility.
How does P4KE47-E3/54 compare to bidirectional TVS diodes like P4KE47CA?
P4KE47-E3/54 is unidirectional and features a cathode band; P4KE47CA is bidirectional with no polarity marking and symmetric clamping in both directions. The P4KE47-E3/54 offers lower leakage at DC bias and is preferred for DC power rail protection, whereas P4KE47CA suits AC-coupled signal lines. Their VBR, VWM, and VC values differ slightly due to internal structure - always consult the respective rows in Table 1 of Vishay 88365 for exact values.
What is the thermal resistance from junction to lead for P4KE47-E3/54?
The typical thermal resistance from junction to lead (RθJL) for P4KE47-E3/54 is 66 °C/W, as specified in the Thermal Characteristics section of Vishay document 88365. This parameter guides PCB copper pour design and heatsinking decisions - for example, a 1.5 W steady-state dissipation would raise junction temperature by ~100 °C above lead temperature. The P4KE47-E3/54 relies on lead conduction rather than case radiation for thermal management.
P4KE47-E3/54 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:
- 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-E3/54 FAQ
1.How can I place an order for P4KE47-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE47-E3/54 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 P4KE47-E3/54 reliable?
The price and inventory of P4KE47-E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE47-E3/54 is usually 5 days.
3.What payment methods are accepted for P4KE47-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE47-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE47-E3/54?
P4KE47-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE47-E3/54 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 P4KE47-E3/54?
For technical support, including P4KE47-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE47-E3/54 requirements.
6.How does Aetrix verify that P4KE47-E3/54 is sourced from the original manufacturer or authorized distributors?
All P4KE47-E3/54 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 P4KE47-E3/54 meets industry standards.
7.What is the process for return or replacement of P4KE47-E3/54?
All P4KE47-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE47-E3/54, 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 P4KE47-E3/54 part is unused and in its original packaging.
Return procedure for P4KE47-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE47-E3/54 Tags
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