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Vishay General Semiconductor - Diodes Division P4KE400-E3/73
- Part No.:
- P4KE400-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE400-E3/73.pdf
- Description:
- TVS DIODE 324VWM 574VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:8,818
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Product details
Overview
P4KE400-E3/73 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for primary overvoltage protection of DC power rails and signal lines. It features 400 W peak pulse power (10/1000 µs), 342 V standoff voltage (VWM), 380–420 V breakdown voltage (VBR), and clamps transients to ≤548 V at 0.73 A peak pulse current - deployed in automotive power supply inputs and industrial sensor interfaces.
For engineers reviewing the P4KE400-E3/73 datasheet, P4KE400-E3/73 pinout, P4KE400-E3/73 application, or P4KE400-E3/73 equivalent, key selection criteria include verified clamping voltage under 10/1000 µs surge, DO-41 leaded package compatibility with through-hole PCB layouts, AEC-Q101 qualification status, and thermal resistance (RθJA = 100 °C/W) for ambient-temperature-limited designs.
Technical Context
This TVS diode operates as a voltage-clamping device that enters avalanche conduction when reverse voltage exceeds its specified VBR range (380–420 V). Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM = 342 V).
It delivers 400 W peak pulse power per 10/1000 µs waveform with 0.01 % duty cycle, and exhibits fast response time (<1.0 ns) and low incremental surge resistance - critical for protecting MOSFET gates and microcontroller I/O against inductive switching spikes and ESD events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 342 V - maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 360 V nominal systems. |
| VBR (min/max) | 380 V / 420 V at 1.0 mA - guaranteed avalanche onset range; used to verify margin above system max operating voltage. |
| VC @ IPPM | ≤548 V at 0.73 A - clamped voltage during full-rated 400 W transient; determines protected circuit's maximum stress level. |
| PPPM | 400 W - peak pulse power handling per 10/1000 µs waveform; defines surge energy absorption capability. |
| IFSM | 40 A - non-repetitive forward surge rating (8.3 ms half-sine); relevant only if used in bidirectional configurations with external rectification. |
| TJ max | +175 °C - maximum junction temperature; enables operation in under-hood automotive environments without derating below 125 °C ambient. |
| RθJA | 100 °C/W - junction-to-ambient thermal resistance with 10 mm lead length; informs heatsinking requirements for repetitive surge scenarios. |
Pinout & Package
DO-41 (DO-204AL) molded epoxy package with axial leads; matte tin-plated terminals solderable per J-STD-002; cathode indicated by color band on unidirectional devices like P4KE400-E3/73.
| 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 | Avalanche conduction terminal | Marked with color band; connected to protected line (e.g., +12 V rail) to clamp positive transients to ground. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure. |
| 400 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 3 (1 kV/2 Ω) surge immunity without external series impedance. |
| AEC-Q101 qualified (E3 suffix variant) | Validated for automotive powertrain and body electronics applications requiring zero-defect reliability. |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes overvoltage overshoot during fast transients, reducing stress on downstream MOSFETs and regulators. |
| UL 94 V-0 compliant molding compound | Meets flammability safety requirements for enclosed industrial control enclosures and EV charging modules. |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Clamp |
|---|---|
Use Scenario: 12 V/24 V battery-fed ECUs exposed to load dump (ISO 16750-2) and alternator ripple. IC Role / Device Role / Timing Role: Primary clamping element placed directly across input rail to suppress >100 V transients within nanoseconds. Use Value: Limits rail voltage to ≤548 V during 400 W surges, preventing damage to upstream DC/DC converters and MCU power supplies. |
Use Scenario: Analog output lines (e.g., 4–20 mA current loop) in factory automation sensors subject to cable-induced lightning surges. IC Role / Device Role / Timing Role: Unidirectional shunt protector tied between signal line and local ground plane. Use Value: Clamps induced common-mode transients before they reach precision op-amp input stages, preserving measurement accuracy. |
| Telecom DC Power Feeds | Consumer Appliance Motor Drive Inputs |
Use Scenario: -48 V telecom rectifier outputs feeding base station backplanes vulnerable to AC-line coupling events. IC Role / Device Role / Timing Role: Standoff-rated TVS placed at board edge to absorb coupled surges before distribution. Use Value: Withstands 342 V continuous reverse bias while clamping 10/1000 µs surges to <548 V - enabling robust front-end protection without crowbar circuits. |
Use Scenario: Brushed motor H-bridge inputs in white goods, where commutation spikes exceed 300 V. IC Role / Device Role / Timing Role: Rail-to-rail clamp on high-side FET source node to limit dv/dt-induced gate oxide stress. Use Value: Fast <1 ns response prevents parasitic turn-on of MOSFETs during inductive kickback, improving system EMC performance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ400A | Surface-mount SMB package (vs. axial DO-41); same VWM (342 V), slightly higher VC (552 V @ 0.73 A). | Requires rework of PCB layout for SMT assembly; better suited for space-constrained consumer electronics. | Select SMBJ400A when automated pick-and-place manufacturing and board density outweigh through-hole serviceability needs. |
| 1.5KE400A | Higher peak power (1500 W), larger DO-201 package; identical VWM/VBR specs but 2.2× physical size and 3× thermal mass. | Used where multi-pulse surge endurance or extended thermal time constant is required (e.g., wind turbine pitch controllers). | Choose 1.5KE400A only if system-level testing confirms need for >400 W single-pulse rating or >1000 W cumulative surge handling. |
Compared with SMBJ400A and 1.5KE400A, P4KE400-E3/73 offers optimal balance of proven automotive qualification, axial-leaded serviceability, and cost-effective 400 W protection - making it preferred for medium-volume industrial controls and legacy automotive modules where DO-41 footprint is standardized.
Availability
P4KE400-E3/73 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom DC power feeds requiring stable component supply with traceable RoHS-compliant sourcing.
Supply support for P4KE400-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade validation.
The P4KE400-E3/73 belongs to Vishay's TRANSZORB® TVS family, engineered specifically for robust, cost-efficient overvoltage protection in harsh-environment DC power and signal paths - targeting automotive, industrial, and infrastructure applications.
FAQ
What is the clamping voltage of P4KE400-E3/73 under full-rated surge conditions?
The P4KE400-E3/73 clamps to a maximum of 548 V when subjected to its rated 0.73 A peak pulse current (10/1000 µs waveform). This value is measured per JEDEC standards and guarantees worst-case overvoltage stress on protected circuitry. The clamping voltage remains stable across its operating temperature range (-55 °C to +175 °C), making P4KE400-E3/73 suitable for under-hood automotive use.
Is P4KE400-E3/73 qualified for automotive applications?
Yes, P4KE400-E3/73 is AEC-Q101 qualified per Vishay documentation (Document Number 88365, Revision 16-Sep-2021). The "E3" suffix denotes RoHS-compliant commercial grade with JESD 201 Class 1A whisker resistance, and the HE3 variant adds full AEC-Q101 qualification. For automotive deployment, confirm use of HE3-suffixed version unless design validation permits commercial-grade parts.
How does the DO-41 package of P4KE400-E3/73 affect thermal performance?
The DO-41 (DO-204AL) package of P4KE400-E3/73 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W with 10 mm lead length. This limits sustained power dissipation to 1.5 W at 75 °C lead temperature. For repetitive surge applications, PCB copper pour and lead length optimization are essential - P4KE400-E3/73 relies on short thermal paths rather than heatsinks due to its axial-leaded form factor.
Can P4KE400-E3/73 be used in bidirectional protection circuits?
No - P4KE400-E3/73 is a unidirectional TVS diode, identifiable by its cathode band marking. Bidirectional protection requires CA-suffixed variants (e.g., P4KE400CA). Using P4KE400-E3/73 in AC or bipolar signal paths would result in forward conduction during negative half-cycles, causing failure. Always match polarity designation to circuit topology: P4KE400-E3/73 for DC rail clamping only.
What is the maximum leakage current of P4KE400-E3/73 at its standoff voltage?
At its maximum standoff voltage (VWM = 342 V) and TA = 25 °C, P4KE400-E3/73 exhibits a maximum reverse leakage current (ID) of 1.0 µA. This ultra-low leakage ensures minimal power loss in always-on systems such as automotive body controllers and IoT sensor nodes, where standby current budgets are tightly constrained.
P4KE400-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):
- 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)
P4KE400-E3/73 FAQ
1.How can I place an order for P4KE400-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE400-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 P4KE400-E3/73 reliable?
The price and inventory of P4KE400-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 P4KE400-E3/73 is usually 5 days.
3.What payment methods are accepted for P4KE400-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE400-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE400-E3/73?
P4KE400-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE400-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 P4KE400-E3/73?
For technical support, including P4KE400-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE400-E3/73 requirements.
6.How does Aetrix verify that P4KE400-E3/73 is sourced from the original manufacturer or authorized distributors?
All P4KE400-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 P4KE400-E3/73 meets industry standards.
7.What is the process for return or replacement of P4KE400-E3/73?
All P4KE400-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE400-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 P4KE400-E3/73 part is unused and in its original packaging.
Return procedure for P4KE400-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE400-E3/73 Tags
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