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Vishay General Semiconductor - Diodes Division 1.5KE400A-804E3/54
- Part No.:
- 1.5KE400A-804E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE400A-804E3/54.pdf
- Description:
- TVS DIODE 342VWM 548VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:7,041
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Product details
Overview
1.5KE400A-804E3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection in DC power rails and signal lines. It features a 380 V to 420 V breakdown voltage (VBR), 342 V maximum standoff voltage (VWM), 548 V clamping voltage at 2.7 A peak pulse current, 1500 W peak pulse power (10/1000 µs), and operates across -55 °C to +175 °C junction temperature range - deployed in automotive power supply inputs and industrial motor drive control circuits.
For engineers reviewing the 1.5KE400A-804E3/54 datasheet, 1.5KE400A-804E3/54 pinout, 1.5KE400A-804E3/54 application, or 1.5KE400A-804E3/54 equivalent, key selection criteria include verified unidirectional clamping performance at 400 V nominal, AEC-Q101 qualification status (via HE3 suffix variants), RoHS-compliant matte tin plating, and compatibility with J-STD-002 solderability standards.
Technical Context
This TVS diode employs a glass passivated silicon junction optimized for fast transient response (<1 ns) and low incremental surge resistance. Its unidirectional polarity uses a cathode band marking and delivers stable clamping under repetitive 10/1000 µs surges at 0.01% duty cycle, with thermal resistance of 15.4 °C/W (junction-to-lead) enabling reliable operation without heatsinking in moderate-power applications.
The device adheres to JEDEC-standardized test conditions: breakdown voltage measured at 1 mA, clamping voltage specified at 2.7 A IPPM, and reverse leakage limited to 1.0 µA at 342 V VWM. It meets UL 94 V-0 flammability rating and supports solder dip up to 275 °C for 10 s per JESD 22-B106.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 380 V / 420 V - Ensures reliable triggering above system operating voltage while avoiding false trips during transients. |
| VWM | 342 V - Maximum continuous reverse working voltage before leakage exceeds 1.0 µA; defines safe DC rail margin. |
| VC @ IPPM | 548 V - Clamped voltage at 2.7 A peak pulse current; determines protected circuit's maximum stress level. |
| PPPM | 1500 W - Peak pulse power handling capability with 10/1000 µs waveform; supports lightning surge immunity per IEC 61000-4-5. |
| IFSM | 200 A - Non-repetitive forward surge current rating (8.3 ms half-sine); validates robustness against inductive switch-off events. |
| TJ max. | +175 °C - Enables use in under-hood automotive environments and high-temperature industrial enclosures. |
| RθJL | 15.4 °C/W - Low junction-to-lead thermal resistance allows direct PCB trace conduction cooling without added heatsinks. |
Pinout & Package
Package: Case Style 1.5KE - molded epoxy body with matte tin-plated leads; RoHS-compliant, commercial-grade E3 suffix; 0.375" (9.5 mm) lead length; UL 94 V-0 rated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point during surge conduction | Connected to protected line side; must be routed with low-inductance traces to minimize clamping overshoot. |
| Cathode | Reverse-biased terminal; marked with color band | Connected to ground or lower-potential reference; polarity critical for unidirectional operation. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure. |
| 1500 W peak pulse power (10/1000 µs) | Validated for IEC 61000-4-5 Level 4 surge immunity (4 kV line-earth) in properly filtered systems. |
| AEC-Q101 qualified variant available | HE3 suffix versions (e.g., 1.5KE400AHE3_A) support automotive powertrain and body electronics deployment. |
| Low incremental surge resistance | Minimizes clamping voltage rise under high di/dt transients, improving protection margin for downstream MOSFETs and ICs. |
| Solderable per J-STD-002/JESD 22-B102 | Enables compatibility with standard reflow and wave solder processes without lead finish degradation. |
Applications
| Automotive Power Input Protection | Industrial Motor Drive Control |
|---|---|
Use Scenario: Protecting 24 V DC input stage of engine control units (ECUs) against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Primary clamping element placed between battery rail and upstream fuse, conducting surge energy to chassis ground. Use Value: Limits transient voltage to ≤548 V, preventing damage to 40 V-rated DC-DC converters and microcontrollers. |
Use Scenario: Safeguarding gate driver ICs and isolated feedback optocouplers in variable-frequency drives (VFDs). IC Role / Device Role / Timing Role: Unidirectional TVS on auxiliary 15 V bias supply, triggered by inductive kickback from relay coils and contactor switching. Use Value: Responds in <1 ns to clamp spikes before they propagate into logic-level interfaces, preserving timing integrity. |
| Telecom Line Interface Protection | Renewable Energy Inverter DC Link |
Use Scenario: Shielding Ethernet PHY power pins and RS-485 transceiver VCC rails from induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Secondary protection stage after gas discharge tube (GDT), absorbing residual energy post-GDT arc extinction. Use Value: Maintains 342 V standoff while clamping to 548 V, ensuring compatibility with 3.3 V/5 V logic supply tolerances. |
Use Scenario: Guarding DC link capacitors and IGBT gate drivers in solar string inverters exposed to lightning-induced grid transients. IC Role / Device Role / Timing Role: Mounted directly across 400 V DC bus terminals to suppress voltage doubling events during rapid AC grid fault clearing. Use Value: Handles 2.7 A peak pulse current without degradation, sustaining 1500 W surge dissipation without thermal runaway. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ400A | Same 400 V VWM, but 552 V VC @ 2.7 A; SMA package (smaller footprint, higher RθJA = 110 °C/W). | Preferred for space-constrained PCBs where thermal management is handled externally; not AEC-Q101 qualified. | Select when board area is critical and ambient temperature remains below 75 °C; verify layout thermal relief. |
| ON Semiconductor 1.5SMC400A | Identical VBR/VWM/VC specs; same 1.5KE package; RoHS-compliant E3 suffix; no AEC-Q101 variant offered. | Drop-in replacement for cost-sensitive industrial designs requiring identical mechanical fit and electrical behavior. | Choose for second-source assurance in non-automotive programs; confirm packaging code (e.g., /54 tape-and-reel) matches. |
Compared with 1.5KE400A-804E3/54, SMAJ400A trades thermal robustness for compactness, while 1.5SMC400A offers identical performance in a functionally interchangeable package - making the latter ideal for BOM flexibility and the former suitable for thermally managed, space-limited layouts.
Availability
1.5KE400A-804E3/54 is available at Aetrix Electronics and suitable for automotive power input protection, industrial motor drive control, telecom line interface protection, and renewable energy inverter DC link applications requiring stable component supply, consistent RoHS compliance, and traceable sourcing.
Supply support for 1.5KE400A-804E3/54 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, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive-grade qualification.
The 1.5KE series was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where failure modes demand proven surge resilience and long-term parametric stability.
FAQ
What is the breakdown voltage range for the 1.5KE400A-804E3/54?
The 1.5KE400A-804E3/54 has a guaranteed breakdown voltage (VBR) range of 380 V to 420 V, measured at 1 mA test current per JEDEC standard. This tolerance ensures predictable turn-on behavior across manufacturing lots and temperature extremes, critical for protecting 400 V-class systems without premature conduction during normal operation.
Is the 1.5KE400A-804E3/54 AEC-Q101 qualified?
The 1.5KE400A-804E3/54 itself carries the E3 suffix indicating RoHS compliance and commercial-grade qualification. AEC-Q101 qualification applies to HE3-suffix variants (e.g., 1.5KE400AHE3_A), which undergo additional stress testing per automotive requirements. For automotive use, specify the HE3 version - the 1.5KE400A-804E3/54 is intended for industrial and telecom applications.
What is the clamping voltage of the 1.5KE400A-804E3/54 at its rated peak pulse current?
The 1.5KE400A-804E3/54 clamps to a maximum of 548 V at its rated peak pulse current (IPPM) of 2.7 A, tested with a 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during surge events and must be compared against the absolute maximum ratings of downstream components like DC-DC controllers or gate drivers.
Can the 1.5KE400A-804E3/54 be used in bidirectional configurations?
No - the 1.5KE400A-804E3/54 is a unidirectional TVS diode, identified by the "A" suffix and cathode band marking. Bidirectional operation requires the "CA" suffix (e.g., 1.5KE400CA). Using this part in reverse-biased AC applications would result in forward conduction and potential failure; always match polarity to circuit topology.
What is the thermal resistance specification for the 1.5KE400A-804E3/54?
The 1.5KE400A-804E3/54 has a typical junction-to-lead thermal resistance (RθJL) of 15.4 °C/W, measured with 0.375" (9.5 mm) lead length. This low value enables effective heat transfer through PCB copper pours or chassis connections, supporting continuous operation at full power without external heatsinking in most industrial designs.
1.5KE400A-804E3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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):
- 2.7A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE400A-804E3/54 FAQ
1.How can I place an order for 1.5KE400A-804E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE400A-804E3/54 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 1.5KE400A-804E3/54 reliable?
The price and inventory of 1.5KE400A-804E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE400A-804E3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE400A-804E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE400A-804E3/54 transactions.
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1.5KE400A-804E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE400A-804E3/54 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 1.5KE400A-804E3/54?
For technical support, including 1.5KE400A-804E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE400A-804E3/54 requirements.
6.How does Aetrix verify that 1.5KE400A-804E3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE400A-804E3/54 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 1.5KE400A-804E3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE400A-804E3/54?
All 1.5KE400A-804E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE400A-804E3/54, 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 1.5KE400A-804E3/54 part is unused and in its original packaging.
Return procedure for 1.5KE400A-804E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE400A-804E3/54 Tags
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