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Vishay General Semiconductor - Diodes Division 1.5KE400A-E3/54
- Part No.:
- 1.5KE400A-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE400A-E3/54.pdf
- Description:
- TVS DIODE 342VWM 548VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:1,290
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Product details
Overview
1.5KE400A-E3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for high-energy surge protection in DC power lines and signal paths. 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 rating (10/1000 µs), and operates across –55 °C to +175 °C junction temperature range - deployed in industrial motor drives and telecom power supplies.
For engineers reviewing the 1.5KE400A-E3/54 datasheet, 1.5KE400A-E3/54 pinout, 1.5KE400A-E3/54 application, or 1.5KE400A-E3/54 equivalent, this page delivers verified electrical parameters, thermal derating behavior, clamping performance under standardized transients, RoHS-compliant packaging details, and direct alternative part comparisons for ESD/lightning surge protection design-in.
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction optimized for fast response (<1 ns) and low incremental surge resistance. Its clamping action limits transient voltages before sensitive downstream components - such as MOSFET gate drivers or microcontroller I/O - experience overstress, with guaranteed performance under 10/1000 µs waveform per REA standards.
The device is rated for 200 A non-repetitive forward surge current (8.3 ms half-sine), exhibits 3.5 V forward voltage at 100 A (per spec note for VBR ≥ 250 V), and maintains stable operation up to 175 °C junction temperature - enabling use in high-ambient environments like automotive engine control modules and industrial PLC power inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 380 V / 420 V - ensures reliable conduction onset above normal operating voltage while avoiding false triggering during line tolerance excursions |
| VWM | 342 V - maximum continuous reverse working voltage compatible with 300–350 V DC bus systems |
| VC @ IPPM | 548 V - clamped voltage seen by protected circuit during 2.7 A 10/1000 µs surge, defining worst-case stress level |
| PPPM | 1500 W - peak transient energy absorption capacity, sufficient for Level 4 IEC 61000-4-5 surge testing |
| IPPM | 2.7 A - peak pulse current capability under standard 10/1000 µs waveform, directly linked to clamping voltage |
| TJ max. | +175 °C - enables placement near heat-generating power stages without thermal shutdown risk |
| RθJA | 75 °C/W - thermal resistance indicating need for adequate PCB copper pour or heatsinking in sustained surge scenarios |
Pinout & Package
Package: DO-201AD (Case Style 1.5KE), axial-leaded, molded epoxy body meeting UL 94 V-0; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point during surge conduction | Connected to lower-potential side of protected line (e.g., ground or return path) |
| Cathode | Reverse-biased terminal during normal operation; avalanche conduction node during overvoltage | Marked with color band; tied to higher-potential line (e.g., DC input or signal rail) to clamp positive transients |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under repeated surge stress without parameter drift |
| 1500 W peak pulse power (10/1000 µs) | Supports robust protection against lightning-induced surges per IEC 61000-4-5 Ed. 3, Level 4 (4 kV/2 Ω) |
| Clamping time < 1 ns | Responds faster than MOVs or GDTs, preventing voltage overshoot before protection activates |
| AEC-Q101 qualification available (HE3 variant) | Validated for automotive under-hood applications requiring extended temperature cycling and humidity resistance |
| RoHS-compliant E3 suffix | Meets JESD 201 Class 1A whisker resistance, suitable for lead-free reflow and high-reliability assembly |
Applications
| Industrial Motor Drives | Telecom Power Supplies |
|---|---|
Use Scenario: Protection of DC link capacitors and IGBT gate drivers against switching-induced voltage spikes and lightning-coupled surges on AC input rectifiers. IC Role / Device Role: Unidirectional TVS placed across bulk capacitor terminals to clamp positive transients exceeding 342 V. Use Value: Limits transient voltage to ≤548 V, preventing dielectric breakdown in 450 V-rated electrolytics and avoiding gate oxide rupture in 600 V IGBTs. | Use Scenario: Surge suppression on -48 V DC distribution rails feeding remote radio units and base station controllers. IC Role / Device Role: Standoff-rated TVS connected between -48 V rail and chassis ground to absorb common-mode lightning surges. Use Value: Maintains system uptime by surviving repeated 1500 W transients without degradation, unlike polymer-based alternatives that fatigue after few events. |
| Automotive Body Control Modules | Industrial PLC Analog Input Protection |
Use Scenario: Guarding LIN bus transceivers and microcontroller GPIOs against load dump and ISO 7637-2 Pulse 5a transients. IC Role / Device Role: Unidirectional TVS on 12 V supply rail upstream of LDO regulators powering MCU peripherals. Use Value: Clamps 120 V/200 ms load dump pulses to safe levels (<548 V), preserving regulator input rating and preventing brownout resets. | Use Scenario: Shielding 4–20 mA current loop receivers from field-wiring induced surges in factory automation cabinets. IC Role / Device Role: TVS installed across input terminals of precision op-amp front-end circuits to limit fault voltage. Use Value: Prevents op-amp saturation and latch-up during 1 kV EFT bursts, maintaining measurement integrity without recalibration. |
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 package; 380–420 V VBR, 548 V VC, but 400 W PPPM (vs. 1500 W) | Lower energy handling limits use to sub-IEC Level 2 surge environments; unsuitable for AC mains-connected equipment | Select only when board space constraints require SMD mounting and surge threat level is limited to ESD or low-energy EFT |
| ON Semiconductor 1N6299A | Identical 1.5KE package and 1500 W rating; VBR 143–158 V (not 380–420 V); different voltage grade | Designed for 12–24 V systems (e.g., automotive infotainment), not high-voltage DC bus protection | Not interchangeable - use only if redesigning for lower-voltage rail; requires full schematic and layout review |
Compared with 1.5KE400A-E3/54, SMAJ400A offers surface-mount convenience but sacrifices >60 % peak power handling, while 1N6299A shares mechanical form but targets entirely different voltage domains - making neither a drop-in replacement without system-level validation.
Availability
1.5KE400A-E3/54 is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, automotive body control modules, and PLC analog input protection requiring stable component supply and long-lifecycle support.
Supply support for 1.5KE400A-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, power handling, and AEC-Q101 qualification.
The 1.5KE series was engineered specifically for high-energy transient suppression in industrial and automotive power systems, balancing clamping precision, thermal robustness, and surge endurance across wide temperature ranges.
FAQ
What is the clamping voltage of the 1.5KE400A-E3/54 under a 10/1000 µs surge?
The 1.5KE400A-E3/54 has a maximum clamping voltage (VC) of 548 V at its rated peak pulse current (IPPM) of 2.7 A under a 10/1000 µs waveform. This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during standardized surge events - critical for ensuring downstream components remain within their absolute maximum ratings.
Is the 1.5KE400A-E3/54 RoHS compliant and lead-free solder compatible?
Yes, the 1.5KE400A-E3/54 carries the E3 suffix, indicating full RoHS compliance and qualification for lead-free soldering processes. Its matte tin-plated leads meet J-STD-002 and JESD 22-B102 solderability requirements, and it passes JESD 201 Class 1A whisker testing - confirming suitability for modern reflow profiles and high-reliability manufacturing environments.
Can the 1.5KE400A-E3/54 be used in bidirectional surge protection circuits?
No, the 1.5KE400A-E3/54 is a unidirectional TVS diode, intended only for clamping positive transients relative to ground. Bidirectional variants (e.g., 1.5KE400CA) exist in the same family but are distinct orderable parts; using the 1.5KE400A-E3/54 in AC or differential-line applications would fail to suppress negative-going surges and may suffer catastrophic failure.
What is the maximum operating temperature for the 1.5KE400A-E3/54?
The 1.5KE400A-E3/54 has a maximum junction temperature (TJ) rating of +175 °C, with storage temperature spanning –55 °C to +175 °C. This high thermal limit allows deployment in demanding environments such as engine compartments, industrial inverters, and enclosed telecom cabinets where ambient temperatures exceed 100 °C - provided PCB thermal design supports adequate heat dissipation.
How does the 1.5KE400A-E3/54 compare to MOV-based surge protection?
The 1.5KE400A-E3/54 offers significantly faster response (<1 ns vs. ~25 ns for MOVs), tighter clamping voltage tolerance (±5 % VBR vs. ±20 % for MOVs), and no wear-out mechanism under repetitive surges - unlike MOVs which degrade with each event. However, it handles lower total energy per surge than high-capacitance MOVs; thus, 1.5KE400A-E3/54 is preferred for precision clamping on sensitive electronics, while MOVs suit primary-stage bulk energy diversion.
1.5KE400A-E3/54 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:
- 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):
- 2.7A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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:
- 1.5KE
1.5KE400A-E3/54 FAQ
1.How can I place an order for 1.5KE400A-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE400A-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 1.5KE400A-E3/54 reliable?
The price and inventory of 1.5KE400A-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 1.5KE400A-E3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE400A-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE400A-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE400A-E3/54?
1.5KE400A-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE400A-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 1.5KE400A-E3/54?
For technical support, including 1.5KE400A-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE400A-E3/54 requirements.
6.How does Aetrix verify that 1.5KE400A-E3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE400A-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 1.5KE400A-E3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE400A-E3/54?
All 1.5KE400A-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE400A-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 1.5KE400A-E3/54 part is unused and in its original packaging.
Return procedure for 1.5KE400A-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE400A-E3/54 Tags
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