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Vishay General Semiconductor - Diodes Division P4KE540-E3/54
- Part No.:
- P4KE540-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE540-E3/54.pdf
- Description:
- TVS DIODE 437VWM 772VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:9,826
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Product details
Overview
P4KE540-E3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for high-energy surge protection with 400 W peak pulse power (10/1000 μs), 459 V stand-off voltage (VWM), and 740 V maximum clamping voltage (VC) at 0.54 A peak pulse current. It protects power rails and input stages of industrial power supplies and telecom interfaces against lightning-induced transients.
For engineers reviewing the P4KE540-E3/54 datasheet, P4KE540-E3/54 pinout, P4KE540-E3/54 application, or P4KE540-E3/54 equivalent, key selection criteria include verified clamping performance at rated IPPM, thermal resistance (RθJL = 66 °C/W), AEC-Q101 qualification status, and DO-41 mechanical compatibility with legacy through-hole layouts.
Technical Context
This TVS diode uses a glass-passivated silicon junction to achieve fast response (<1 ns) and low incremental surge resistance, enabling effective suppression of ESD and inductive switching spikes. Its unidirectional polarity-marked by a cathode band-ensures defined forward conduction path during overvoltage events while maintaining high reverse isolation up to 459 V.
The device operates across -55 °C to +175 °C junction temperature range and delivers stable clamping under repetitive 0.01% duty cycle pulses. Its 1.5 W steady-state power dissipation and 66 °C/W junction-to-lead thermal resistance support reliable operation without active cooling in board-level surge protection circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 459 V - Maximum continuous reverse operating voltage before clamping begins; sets upper limit for protected circuit's normal operating rail. |
| VBR min/max | 513 V / 567 V at 1 mA - Verified breakdown threshold ensures predictable turn-on margin above VWM with tight 10.5% tolerance. |
| VC @ IPPM | 740 V at 0.54 A - Measured clamping voltage defines worst-case overvoltage seen by downstream components during full-rated transient. |
| PPPM | 400 W - Peak pulse power handling per 10/1000 μs waveform; determines survivability against IEC 61000-4-5 Level 4 surges. |
| RθJL | 66 °C/W - Junction-to-lead thermal resistance enables direct PCB copper pour heatsinking without external thermal vias. |
| TJ max | +175 °C - Maximum junction temperature rating supports use in high-ambient environments like automotive engine bays or industrial enclosures. |
Pinout & Package
Package: DO-41 (DO-204AL), axial-leaded, molded epoxy body with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards. Cathode indicated by color band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or lower-potential node; conducts during positive transients when cathode is at higher potential. |
| Cathode | Clamping reference terminal | Marked end; connected to protected line (e.g., 48 V DC input); initiates avalanche breakdown when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable, repeatable avalanche characteristics over 1000+ surge events without parameter drift. |
| 400 W peak pulse power (10/1000 μs) | Meets IEC 61000-4-5 surge immunity requirements for industrial and telecom equipment up to Level 4 (4 kV line-earth). |
| AEC-Q101 qualified (E3 suffix variant) | Validated for automotive power electronics applications including body control modules and infotainment power inputs. |
| UL 94 V-0 molding compound | Ensures flame-retardant enclosure integrity during fault conditions, supporting safety compliance in Class I/II systems. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., EFT bursts), reducing stress on downstream MOSFETs or controllers. |
Applications
| Industrial Power Input Protection | Telecom DC Feeder Line Protection |
|---|---|
|
Use Scenario: 48 V DC power feeders in remote radio units exposed to lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between DC input and ground to shunt surge energy before it reaches DC/DC converter ICs. Use Value: Clamps transients to ≤740 V within nanoseconds, preventing damage to isolated gate drivers and PWM controllers rated for 600 V max. |
Use Scenario: Central office line cards receiving -48 V DC power over long-distance twisted pair. IC Role / Device Role / Timing Role: Primary overvoltage protector on input rail, coordinated with upstream fuses and secondary MOVs. Use Value: Withstands repeated 400 W surges without degradation, ensuring multi-year field reliability in telco infrastructure. |
| Automotive Body Control Module | Consumer Appliance Motor Drive Inputs |
|
Use Scenario: 12 V battery-connected microcontroller power supply in door module subjected to load dump pulses. IC Role / Device Role / Timing Role: First-line transient suppressor on main VBAT input, preceding LDO regulators and CAN transceivers. Use Value: AEC-Q101 qualification confirms robustness against ISO 7637-2 Pulse 5a (load dump), limiting clamped voltage to safe levels for 16 V-rated ICs. |
Use Scenario: AC-DC power supply input stage in washing machine motor control board exposed to inductive kickback from relay switching. IC Role / Device Role / Timing Role: Standoff-rated TVS across bulk capacitor terminals to absorb stored energy from relay coil de-energization. Use Value: 459 V VWM allows operation with 400 VDC bus while clamping 600 V spikes to 740 V, protecting bridge rectifier and controller ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ440A | Surface-mount SMB package; 440 V VWM; 400 W PPPM; RθJA = 40 °C/W (vs. 100 °C/W for DO-41) | Requires PCB redesign for SMD layout; better thermal performance on dense boards but lower surge margin than P4KE540-E3/54's 459 V VWM | Select when space-constrained designs demand SMD footprint and thermal management via copper area is feasible. |
| 1.5KE540A | Same DO-41 package; identical VWM/VBR/VC; 1500 W PPPM (vs. 400 W); higher IPPM (1.5 A) | Higher energy handling suits primary-side AC surge protection; larger junction capacitance may affect high-speed signal lines | Choose for higher-energy threat environments (e.g., AC mains entry) where 1500 W rating is required and size permits. |
Compared with SMBJ440A and 1.5KE540A, the P4KE540-E3/54 offers optimal balance of high-voltage standoff (459 V), proven through-hole mechanical robustness, and AEC-Q101 qualification-making it preferred for cost-sensitive, high-reliability DC power protection where 400 W surge capacity suffices.
Availability
P4KE540-E3/54 is available at Aetrix Electronics and suitable for industrial power input protection, telecom DC feeder line protection, automotive body control modules, and consumer appliance motor drive inputs requiring stable component supply and long-term lifecycle continuity.
Supply support for P4KE540-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, automotive qualification, and industrial-grade performance.
The P4KE540-E3/54 belongs to Vishay's TRANSZORB® TVS family, engineered specifically for robust, standardized transient suppression in high-voltage DC systems where precise clamping and long-term parametric stability are critical.
FAQ
What is the maximum clamping voltage of the P4KE540-E3/54 under full-rated surge current?
The P4KE540-E3/54 exhibits a maximum clamping voltage (VC) of 740 V when subjected to its rated peak pulse current of 0.54 A using the standard 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88365 and defines the upper voltage limit imposed on protected circuitry during worst-case transient events. The P4KE540-E3/54 maintains this clamping performance across its specified operating temperature range.
Is the P4KE540-E3/54 suitable for automotive applications?
Yes-the P4KE540-E3/54 is AEC-Q101 qualified, confirming its suitability for automotive power electronics such as body control modules and infotainment system inputs. Its 175 °C maximum junction temperature, glass-passivated junction, and validated surge endurance meet stringent automotive reliability requirements. Note that the "E3" suffix denotes RoHS-compliant commercial grade; for AEC-Q101 compliance, the HE3 variant (e.g., P4KE540AHE3/54) must be selected.
How does the P4KE540-E3/54 differ from the 1.5KE540A in practical design use?
The P4KE540-E3/54 and 1.5KE540A share identical voltage ratings (VWM = 459 V, VBR = 513–567 V) and DO-41 packaging, but differ critically in surge capability: the 1.5KE540A delivers 1500 W peak pulse power versus 400 W for the P4KE540-E3/54. This makes the 1.5KE540A appropriate for higher-energy threats like AC mains surges, while the P4KE540-E3/54 is optimized for cost-effective, space-efficient DC rail protection where 400 W suffices.
What is the thermal resistance specification for the P4KE540-E3/54, and how does it impact PCB layout?
The P4KE540-E3/54 has a typical junction-to-lead thermal resistance (RθJL) of 66 °C/W, enabling efficient heat transfer from the die to the PCB copper through its axial leads. In practice, this allows designers to use generous copper pours connected to both leads-without requiring thermal vias-to sustain 1.5 W steady-state dissipation. Layouts should maintain ≥2 mm clearance from adjacent thermally sensitive components due to localized heating during surge events.
Does the P4KE540-E3/54 have bidirectional capability?
No-the P4KE540-E3/54 is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. It conducts only during reverse-biased overvoltage events (anode grounded, cathode to protected line). For bidirectional protection, Vishay specifies the "CA" suffix (e.g., P4KE440CA); the P4KE540-E3/54 is not rated for symmetrical clamping in both polarities and must be oriented correctly in-circuit to function as intended.
P4KE540-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):
- 437V
- Voltage - Breakdown (Min):
- 486V
- Voltage - Clamping (Max) @ Ipp:
- 772V
- Current - Peak Pulse (10/1000µs):
- 520mA
- 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)
P4KE540-E3/54 FAQ
1.How can I place an order for P4KE540-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE540-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 P4KE540-E3/54 reliable?
The price and inventory of P4KE540-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 P4KE540-E3/54 is usually 5 days.
3.What payment methods are accepted for P4KE540-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE540-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE540-E3/54?
P4KE540-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE540-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 P4KE540-E3/54?
For technical support, including P4KE540-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE540-E3/54 requirements.
6.How does Aetrix verify that P4KE540-E3/54 is sourced from the original manufacturer or authorized distributors?
All P4KE540-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 P4KE540-E3/54 meets industry standards.
7.What is the process for return or replacement of P4KE540-E3/54?
All P4KE540-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE540-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 P4KE540-E3/54 part is unused and in its original packaging.
Return procedure for P4KE540-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE540-E3/54 Tags
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