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Vishay General Semiconductor - Diodes Division P4KE400A-E3/54
- Part No.:
- P4KE400A-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE400A-E3/54.pdf
- Description:
- TVS DIODE 342VWM 548VC DO204AL
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P4KE400A-E3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for robust overvoltage protection of sensitive electronics. It features 400 W peak pulse power (10/1000 μs), 342 V stand-off voltage (VWM), 380–420 V breakdown voltage (VBR), and clamps transients to ≤548 V at 0.73 A peak pulse current - deployed on power rails and signal lines in industrial motor drives and automotive ECUs.
For engineers reviewing the P4KE400A-E3/54 datasheet, P4KE400A-E3/54 pinout, P4KE400A-E3/54 application, or P4KE400A-E3/54 equivalent, this page delivers verified electrical parameters, thermal derating behavior, AEC-Q101 qualification status, DO-41 mechanical dimensions, and direct alternative part comparisons - all aligned with Vishay Document #88365 (Rev. 16-Sep-2021).
Technical Context
This TVS diode operates as a unidirectional clamping device with glass-passivated junction and matte tin-plated leads compliant with J-STD-002. Its 66 °C/W junction-to-lead thermal resistance enables effective transient energy dissipation under short-duration surges, while its 175 °C maximum junction temperature supports operation in under-hood automotive environments.
The device meets AEC-Q101 stress test requirements and is rated for 40 A non-repetitive forward surge current (8.3 ms half-sine). Its 0.110 %/°C temperature coefficient of VBR ensures stable clamping across wide ambient ranges, and its 1.5 W steady-state power dissipation allows continuous biasing in low-leakage standby circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 342 V - Maximum continuous reverse operating voltage before leakage exceeds 1.0 μA; sets upper limit for system rail voltage tolerance. |
| VBR min/max | 380 V / 420 V at 1.0 mA - Confirmed breakdown range ensures reliable turn-on during fast transients without premature conduction. |
| VC @ IPPM | ≤548 V at 0.73 A - Clamping voltage defines worst-case overvoltage seen by protected ICs during 10/1000 μs surge events. |
| PPPM | 400 W - Peak pulse power rating determines survivability against lightning-induced or inductive-switching surges per IEC 61000-4-5. |
| TJ max | +175 °C - Enables use in high-temperature locations such as engine control modules and industrial power converters. |
| RθJL | 66 °C/W - Low thermal resistance from junction to lead supports rapid heat transfer into PCB copper or heatsinked traces. |
Pinout & Package
Package: DO-41 (DO-204AL), molded epoxy body with glass-passivated chip junction; 0.205" (5.2 mm) body diameter, 0.107" (2.7 mm) lead diameter; RoHS-compliant matte tin plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path); conducts during positive surges when cathode is biased higher. |
| Cathode | Clamping terminal | Marked with color band; connected to protected line (e.g., 24 V rail); initiates avalanche breakdown when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable, low-leakage performance over lifetime and temperature; eliminates need for hermetic sealing in DO-41 package. |
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces per stress test requirements. |
| 400 W peak pulse power (10/1000 μs) | Withstands repetitive ESD and surge events up to 0.01% duty cycle without degradation - suitable for industrial fieldbus nodes. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns rise time), improving protection margin for downstream MOSFETs and microcontrollers. |
| UL 94 V-0 molding compound | Ensures flame-retardant housing integrity during fault conditions, meeting safety standards for enclosed power supplies and EV charging systems. |
Applications
| Industrial Motor Drives | Automotive Engine Control Units |
|---|---|
Use Scenario: Protection of gate drivers and current-sense amplifiers from inductive kickback during IGBT switching in 400 V DC bus inverters. IC Role / Device Role: Unidirectional TVS placed between high-side driver output and ground to clamp negative transients below -548 V. Use Value: Prevents latch-up or permanent damage to isolated gate drivers (e.g., Si823x) by limiting voltage excursion to ≤548 V at 0.73 A. |
Use Scenario: Safeguarding LIN bus transceivers and crankshaft position sensors from load dump and jump-start surges in 12 V vehicle networks. IC Role / Device Role: Standoff-connected TVS on battery-supplied VCC rail to absorb 120 V/0.5 s load dump pulses per ISO 7637-2. Use Value: Maintains <342 V operating window while clamping to ≤548 V, ensuring uninterrupted operation of 5 V LDOs and MCU I/O pins. |
| Telecom Power Supplies | Consumer Appliance Control Boards |
Use Scenario: Input-stage surge suppression on AC/DC front-end rectifiers exposed to lightning-induced surges on PoE-powered base stations. IC Role / Device Role: Primary clamping device across bulk capacitor terminals to divert 400 W transient energy away from PWM controllers. Use Value: Withstands ≥1000 surges at rated PPPM without parameter shift, supporting 10-year field reliability in outdoor telecom cabinets. |
Use Scenario: Overvoltage protection for microcontroller reset lines and relay coil flyback paths in smart washing machine mainboards. IC Role / Device Role: Cathode tied to +3.3 V reset rail; anode grounded to suppress ESD and relay-induced spikes up to ±15 kV contact discharge. Use Value: Limits reset line excursion to <548 V, preventing false resets and flash corruption during factory ESD testing per IEC 61000-4-2. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ400A | Same DO-214AC (SMA) package; 400 W rating; VWM = 342 V; VC = 548 V at 0.73 A - identical clamping but surface-mount form factor. | Requires PCB re-layout for SMD placement; lacks axial-lead mechanical robustness for high-vibration environments. | Select when board space is constrained and automated assembly is prioritized over manual serviceability. |
| Vishay P4KE400AHE3/54 | Identical electrical specs and DO-41 package; differs only in AEC-Q101 qualification (HE3 suffix) and JESD 201 Class 2 whisker resistance. | Required for automotive production programs where component-level qualification evidence is mandated by OEMs. | Choose P4KE400AHE3/54 if AEC-Q101 documentation and extended whisker testing are contractually required. |
Compared with SMAJ400A, P4KE400A-E3/54 offers through-hole mechanical stability and legacy compatibility; versus P4KE400AHE3/54, it provides commercial-grade cost optimization without sacrificing clamping performance or thermal capability.
Availability
P4KE400A-E3/54 is available at Aetrix Electronics and suitable for industrial motor drives, automotive engine control units, and telecom power supplies requiring stable component supply, long-term lifecycle support, and traceable RoHS-compliant sourcing.
Supply support for P4KE400A-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade validation.
The P4KE400A-E3/54 belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-energy transient suppression in harsh environments - targeting design-in across automotive, industrial, and infrastructure applications.
FAQ
What is the maximum clamping voltage of the P4KE400A-E3/54 under standard surge conditions?
The P4KE400A-E3/54 clamps to a maximum of 548 V when subjected to its rated peak pulse current of 0.73 A using the standardized 10/1000 μs waveform. This value is measured at the device terminals and defines the upper voltage limit imposed on protected circuitry during transient events. The P4KE400A-E3/54 maintains this clamping performance across its full operating temperature range from –55 °C to +175 °C.
Is the P4KE400A-E3/54 suitable for automotive applications?
The P4KE400A-E3/54 is RoHS-compliant and manufactured to commercial-grade specifications; it is not AEC-Q101 qualified. For automotive use, Vishay offers the P4KE400AHE3/54 variant, which carries the HE3 suffix and full AEC-Q101 qualification. The P4KE400A-E3/54 may be used in non-safety-critical aftermarket or diagnostic tools, but the P4KE400A-E3/54 itself does not meet OEM automotive qualification requirements.
What is the standoff voltage (VWM) of the P4KE400A-E3/54, and how does it relate to system design?
The P4KE400A-E3/54 has a standoff voltage (VWM) of 342 V - the maximum DC or continuous peak voltage that can be applied without exceeding 1.0 μA reverse leakage. This value must exceed the normal operating voltage of the protected line by at least 10–15 % to avoid false triggering. For example, the P4KE400A-E3/54 is appropriate for 300 V nominal DC bus applications where transient margins require headroom above steady-state voltage.
Does the P4KE400A-E3/54 have bidirectional capability?
No, the P4KE400A-E3/54 is a unidirectional TVS diode, indicated by the "A" suffix (as opposed to "CA" for bidirectional variants like P4KE400CA). It conducts only in reverse bias above VBR and blocks forward current up to 3.5 V at 25 A. Bidirectional protection requires separate devices or a CA-suffixed part; the P4KE400A-E3/54 must be oriented with cathode toward the protected line and anode to ground.
What is the thermal resistance and power derating behavior of the P4KE400A-E3/54?
The P4KE400A-E3/54 has a typical junction-to-lead thermal resistance (RθJL) of 66 °C/W and a steady-state power dissipation (PD) of 1.5 W at TL = 75 °C. Its power rating derates linearly above 75 °C lead temperature, reaching zero at 175 °C junction temperature. Derating curves in Vishay Document #88365 (Fig. 5) confirm usable power down to ~0.75 W at TL = 125 °C - critical for high-ambient designs using the P4KE400A-E3/54.
P4KE400A-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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 342V
- Voltage - Breakdown (Min):
- 380V
- Voltage - Clamping (Max) @ Ipp:
- 548V
- Current - Peak Pulse (10/1000µs):
- 730mA
- 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)
P4KE400A-E3/54 FAQ
1.How can I place an order for P4KE400A-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE400A-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 P4KE400A-E3/54 reliable?
The price and inventory of P4KE400A-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 P4KE400A-E3/54 is usually 5 days.
3.What payment methods are accepted for P4KE400A-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE400A-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE400A-E3/54?
P4KE400A-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE400A-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 P4KE400A-E3/54?
For technical support, including P4KE400A-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE400A-E3/54 requirements.
6.How does Aetrix verify that P4KE400A-E3/54 is sourced from the original manufacturer or authorized distributors?
All P4KE400A-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 P4KE400A-E3/54 meets industry standards.
7.What is the process for return or replacement of P4KE400A-E3/54?
All P4KE400A-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE400A-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 P4KE400A-E3/54 part is unused and in its original packaging.
Return procedure for P4KE400A-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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