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Vishay General Semiconductor - Diodes Division P4KE400C-E3/73
- Part No.:
- P4KE400C-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE400C-E3/73.pdf
- Description:
- TVS DIODE 324VWM 574VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:6,242
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Product details
Overview
P4KE400C-E3/73 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for clamping voltage transients on signal or power lines. It features 400 W peak pulse power (10/1000 μs), 342 V standoff voltage (VWM), 380–420 V breakdown voltage (VBR), and clamps to ≤548 V at 0.73 A peak pulse current - deployed in automotive sensor line protection and industrial I/O interface surge suppression.
For engineers reviewing the P4KE400C-E3/73 datasheet, P4KE400C-E3/73 pinout, P4KE400C-E3/73 application, or P4KE400C-E3/73 equivalent, key selection criteria include bidirectional clamping capability, DO-41 mechanical compatibility, AEC-Q101 qualification status, thermal resistance (RθJL = 66 °C/W), and compliance with 10/1000 μs surge waveform standards for IEC 61000-4-5 level 4 immunity.
Technical Context
This device operates as a voltage-clamping protector with symmetrical avalanche behavior in both polarities, enabling use on AC-coupled or floating signal paths without polarity concerns. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at VWM) across -55 °C to +175 °C operating range.
The P4KE400C-E3/73 delivers 400 W transient power handling per 10/1000 μs waveform at 25 °C, derating linearly above TA = 25 °C per Figure 2, and supports repetitive surge events at ≤0.01 % duty cycle. Its 66 °C/W junction-to-lead thermal resistance enables effective heat dissipation into PCB copper or lead frame under pulsed conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 342 V - maximum continuous reverse working voltage before clamping initiates; defines safe operating margin below breakdown |
| VBR min/max | 380 V / 420 V at 1.0 mA - guaranteed avalanche onset range; ensures predictable clamping threshold across production lot |
| VC @ IPPM | ≤548 V at 0.73 A - clamped voltage during full-rated 10/1000 μs surge; determines protected circuit's maximum overvoltage exposure |
| PPPM | 400 W - peak transient power absorption capacity; validates compliance with IEC 61000-4-5 Level 4 surge testing |
| TJ max | +175 °C - maximum junction temperature; supports operation in under-hood automotive environments and high-ambient industrial enclosures |
| RθJL | 66 °C/W - junction-to-lead thermal resistance; enables thermal design using lead-frame conduction rather than PCB copper area alone |
Pinout & Package
Package: DO-41 (DO-204AL), molded epoxy body with matte tin-plated leads; RoHS-compliant, AEC-Q101 qualified (E3 suffix denotes commercial grade; HE3 required for automotive qualification).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; cathode in reverse bias | Bidirectional symmetry means either terminal serves as cathode depending on transient polarity - no marking on device body |
| Cathode | Current exit terminal in forward bias; anode in reverse bias | Identical physical terminal as Anode; functional role reverses with applied voltage polarity - enables true bidirectional clamping |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and low leakage drift over temperature and lifetime - critical for long-term reliability in unattended systems |
| 400 W peak pulse power (10/1000 μs) | Validates robustness against lightning-induced surges and inductive switching transients per IEC 61000-4-5 Ed. 3 |
| AEC-Q101 qualified variant available (HE3 suffix) | Confirms stress-test validation for automotive electronics including temperature cycling, HTRB, and ESD - required for engine control and ADAS modules |
| UL 94 V-0 compliant molding compound | Prevents flame propagation in enclosed industrial or transportation equipment - satisfies safety certification requirements for Class I/II installations |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between signal line and ground, absorbing transients before they reach sensitive IC inputs. Use Value: Maintains signal integrity during 100 V/50 ms load dump events while limiting clamped voltage to ≤548 V - preserving downstream ADC and microcontroller input stages. |
Use Scenario: Shielding 4–20 mA current loop inputs and ±10 V analog inputs in programmable logic controllers from field-wiring induced surges. IC Role / Device Role / Timing Role: Standoff-mode protector on differential input pairs, activated only during >342 V transients to avoid signal distortion during normal operation. Use Value: Enables reliable operation in factory-floor environments with frequent motor contactor switching - verified for 400 W surge handling at 0.01 % duty cycle. |
| Telecom Line Interface Surge Suppression | Consumer Appliance Motor Drive Protection |
Use Scenario: Safeguarding Ethernet PHY interfaces, DSL line drivers, and PoE injectors against lightning-induced common-mode surges on twisted-pair cabling. IC Role / Device Role / Timing Role: Paired bidirectional TVS devices across line-to-line and line-to-ground paths to suppress differential and common-mode transients simultaneously. Use Value: Achieves <1 ns response time and clamps 10/1000 μs surges to ≤548 V - meeting GR-1089-CORE Level 3 telecom immunity requirements. |
Use Scenario: Suppressing commutation spikes from universal motors and brushless DC fans in washing machines, HVAC blowers, and power tools. IC Role / Device Role / Timing Role: Low-capacitance (≈100 pF typical) shunt protector across motor terminals or driver outputs to limit voltage overshoot during MOSFET turn-off. Use Value: Prevents gate oxide damage in half-bridge drivers by clamping inductive kickback to ≤548 V - validated for 40 A IFSM surge current capability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ400CA | DO-214AA package; 600 W PPPM rating; lower RθJA (50 °C/W); higher VC (574 V @ 0.65 A) | Better suited for space-constrained PCBs requiring higher power density; less optimal for lead-frame thermal coupling | Select SMBJ400CA when board layout allows SMC footprint and higher surge margin is needed beyond 400 W |
| 1.5KE400CA | DO-201AD package; 1500 W PPPM; larger body; higher VF (5.0 V); same VWM/VBR range | Used where legacy through-hole designs require higher energy absorption without changing clamping voltage | Choose 1.5KE400CA for retrofitting existing 1.5 kW surge protection circuits while retaining identical voltage thresholds |
Compared with SMBJ400CA and 1.5KE400CA, the P4KE400C-E3/73 offers optimized thermal path via DO-41 leads (RθJL = 66 °C/W), lower profile for vertical mounting, and direct compatibility with legacy P4KE-series layouts - making it ideal for cost-sensitive, thermally managed, and AEC-Q101-optional applications.
Availability
P4KE400C-E3/73 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC analog inputs, and telecom line protection requiring stable component supply, long-lifecycle support, and RoHS-compliant sourcing.
Supply support for P4KE400C-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 diodes, rectifiers, and protection devices with emphasis on reliability, thermal performance, and automotive-grade qualification.
The P4KE series belongs to Vishay's TRANSZORB® TVS family, engineered specifically for robust, standardized transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure applications demanding AEC-Q101 or UL 94 V-0 compliance.
FAQ
What is the polarity configuration of the P4KE400C-E3/73?
The P4KE400C-E3/73 is a bidirectional TVS diode, meaning it provides symmetrical clamping in both forward and reverse directions. Unlike unidirectional variants (e.g., P4KE400A), it has no cathode band marking and functions identically regardless of voltage polarity - essential for protecting AC-coupled or floating signal lines where transient direction is unpredictable.
Does the P4KE400C-E3/73 meet AEC-Q101 qualification?
The P4KE400C-E3/73 carries the E3 suffix, indicating RoHS-compliant commercial grade construction. For AEC-Q101 qualification, the HE3 suffix variant (e.g., P4KE400CHE3/73) must be selected - confirmed in Vishay Document 88365 Note (1) and Ordering Information table. The P4KE400C-E3/73 itself is not AEC-Q101 qualified.
What is the maximum clamping voltage of the P4KE400C-E3/73 under rated surge conditions?
The P4KE400C-E3/73 clamps to a maximum of 548 V when subjected to its rated 10/1000 μs surge waveform at 0.73 A peak pulse current (IPPM), as specified in the Electrical Characteristics table on page 2 of Vishay Document 88365. This value defines the upper voltage limit imposed on protected circuitry during worst-case transient events.
How does the DO-41 package of the P4KE400C-E3/73 affect thermal performance?
The DO-41 (DO-204AL) package of the P4KE400C-E3/73 provides a defined thermal path with RθJL = 66 °C/W (junction-to-lead), enabling efficient heat transfer into PCB copper pours or metal chassis via its axial leads. This contrasts with surface-mount packages that rely more heavily on pad copper area - making the P4KE400C-E3/73 especially effective in lead-frame–cooled industrial and automotive modules.
Can the P4KE400C-E3/73 replace unidirectional P4KE400A in existing designs?
No - the P4KE400C-E3/73 is bidirectional and lacks polarity marking, whereas P4KE400A is unidirectional with a cathode band. Substituting them requires verifying circuit topology: P4KE400C-E3/73 is appropriate only where symmetrical clamping is needed (e.g., AC lines, differential pairs), while P4KE400A suits DC-biased rails where forward conduction must be blocked. Direct replacement may cause unintended conduction paths.
P4KE400C-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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 324V
- Voltage - Breakdown (Min):
- 360V
- Voltage - Clamping (Max) @ Ipp:
- 574V
- Current - Peak Pulse (10/1000µs):
- 700mA
- 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)
P4KE400C-E3/73 FAQ
1.How can I place an order for P4KE400C-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE400C-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 P4KE400C-E3/73 reliable?
The price and inventory of P4KE400C-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 P4KE400C-E3/73 is usually 5 days.
3.What payment methods are accepted for P4KE400C-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE400C-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE400C-E3/73?
P4KE400C-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE400C-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 P4KE400C-E3/73?
For technical support, including P4KE400C-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE400C-E3/73 requirements.
6.How does Aetrix verify that P4KE400C-E3/73 is sourced from the original manufacturer or authorized distributors?
All P4KE400C-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 P4KE400C-E3/73 meets industry standards.
7.What is the process for return or replacement of P4KE400C-E3/73?
All P4KE400C-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE400C-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 P4KE400C-E3/73 part is unused and in its original packaging.
Return procedure for P4KE400C-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE400C-E3/73 Tags
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