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Taiwan Semiconductor Corporation 1V5KE400A
- Part No.:
- 1V5KE400A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1V5KE400A.pdf
- Description:
- TVS DIODE 342VWM 548VC DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:6,960
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Product details
Overview
1V5KE400A from Taiwan Semiconductor is a unidirectional transient voltage suppressor (TVS) diode designed for high-energy surge protection in DC power lines and signal interfaces. It features a 342 V reverse stand-off voltage (VRWM), 380–420 V breakdown voltage (VBR) at 1 mA, 1500 W peak pulse power (1 ms), 548 V clamping voltage (VC) at 2.8 A IPPM, and DO-201 axial package - used in industrial power supply input stages to absorb lightning-induced surges.
For engineers reviewing the 1V5KE400A datasheet, 1V5KE400A pinout, 1V5KE400A application, or 1V5KE400A equivalent, key selection criteria include clamping voltage margin relative to protected IC's absolute maximum rating, VRWM compatibility with operating bus voltage, thermal derating above 75°C, and lead-free solderability per J-STD-002.
Technical Context
The 1V5KE400A operates as a silicon avalanche diode with glass-passivated junction, enabling fast response (<1 ns) to ESD and electrical fast transients (EFT). Its unidirectional polarity provides asymmetric clamping - conducting only during positive overvoltage events while blocking reverse leakage (<5 µA at VRWM).
Designed for 1 ms 10/1000 µs waveform compliance, it delivers 1500 W peak pulse power with low incremental surge resistance, ensuring predictable voltage clamping under repetitive surge stress. Junction temperature range spans −55°C to +175°C, supporting operation in harsh industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 342 V - Maximum continuous reverse operating voltage before significant leakage; must exceed system nominal DC bus by ≥20%. |
| VBR (min/max) | 380 V / 420 V at 1 mA - Confirmed avalanche onset range; defines minimum overvoltage threshold for clamping activation. |
| VC @ IPPM | 548 V at 2.8 A - Clamped voltage during 1500 W surge; determines maximum stress on downstream components. |
| PPPM | 1500 W - Peak pulse power handling for 1 ms duration; validates robustness against IEC 61000-4-5 Level 4 surges. |
| TJ max | +175°C - Maximum junction temperature; enables use in high-ambient industrial enclosures without forced cooling. |
| Package | DO-201 - Axial-leaded, UL 94V-0 molded case; compatible with through-hole wave soldering and manual rework. |
Pinout & Package
DO-201 package: axial-leaded, cylindrical epoxy body with cathode band marking. Cathode terminal is marked with a colored band; anode is unmarked lead. Leads are pure tin-plated, solderable per J-STD-002, and meet JEDEC JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current sink during forward conduction | Connected to ground or low-impedance return path; carries full surge current during clamping. |
| Cathode | Protected line connection point | Connected to line being protected (e.g., +400 V DC rail); voltage referenced to anode during clamping. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable avalanche characteristics and long-term reliability under repeated surge stress without parameter drift. |
| 1500 W peak pulse power (1 ms) | Meets IEC 61000-4-5 surge immunity requirements for industrial equipment up to Level 4 (4 kV line-to-ground). |
| Clamping voltage ≤548 V at 2.8 A | Provides ≥15% margin below typical 600 V MOSFET drain-source breakdown, protecting switching devices in HV DC systems. |
| RoHS & halogen-free (IEC 61249-2-21) | Complies with EU environmental directives and supports lead-free manufacturing without compromising thermal performance. |
Applications
| Industrial Power Supply Input Protection | Telecom DC Feeder Line Protection |
|---|---|
Use Scenario: 400 V DC input stage of programmable logic controller (PLC) power module exposed to induced lightning surges on factory wiring. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between DC+ and chassis ground to clamp transient overvoltages before they reach upstream rectifier and bulk capacitor. Use Value: Limits voltage excursion to ≤548 V during 1500 W surge, preventing catastrophic failure of 600 V-rated primary-side MOSFETs and electrolytic capacitors. | Use Scenario: -48 V DC telecom power feed line entering remote radio unit (RRU), subject to EFT bursts and accidental AC cross-connect. IC Role / Device Role / Timing Role: Standoff-rated TVS mounted at entry connector to shunt surge energy away from DC-DC converters and baseband processors. Use Value: With 342 V VRWM, it remains fully blocking during normal −48 V operation while responding within nanoseconds to >1 kV transients. |
| Motor Drive DC Bus Snubbing | Renewable Energy Inverter DC Link Protection |
Use Scenario: DC link between rectifier and IGBT inverter driving HVAC compressors, where inductive switching generates repetitive voltage spikes. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing commutation spikes across the DC bus, reducing stress on IGBT gate drivers and bus capacitors. Use Value: 175°C max junction temperature allows mounting near heatsinks; low IR (<5 µA) avoids measurable leakage loss at 342 V standoff. | Use Scenario: 400 V DC output of solar string combiner box feeding central inverter, requiring protection against grid-switching transients and nearby lightning. IC Role / Device Role / Timing Role: Primary overvoltage clamp on PV+ line, coordinated with MOVs to handle both fast ESD and high-energy surges. Use Value: 1500 W rating enables coordination with upstream 40 mm MOVs without thermal runaway; DO-201 package allows direct PCB mounting with minimal trace inductance. |
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 P6SMB400A | Same DO-201 package, identical VRWM (342 V), VBR (380–420 V), and VC (548 V); ±5% VBR tolerance vs. ±10% for 1V5KE400A. | Identical placement and function; tighter VBR tolerance improves consistency in high-volume production. | Select when tighter parametric control is required for safety-critical surge thresholds. |
| ON Semiconductor 1N5627 | DO-201 package, VRWM = 342 V, but lower PPPM = 600 W and higher VC = 575 V at rated IPPM. | Suitable only for lower-energy transients; not compliant with IEC 61000-4-5 Level 4. | Choose only for cost-sensitive, non-safety-critical applications with verified lower surge exposure. |
Compared with P6SMB400A and 1N5627, the 1V5KE400A offers balanced performance: full 1500 W surge capability matching industry-standard test levels, DO-201 compatibility for drop-in replacement in legacy designs, and RoHS/halogen-free compliance aligned with modern manufacturing requirements.
Availability
1V5KE400A is available at Aetrix Electronics and suitable for industrial power supplies, telecom DC feeder protection, and renewable energy inverters requiring stable component supply and long-term lifecycle support.
Supply support for 1V5KE400A 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, including TVS diodes, rectifiers, and MOSFETs, with global distribution and AEC-Q200 qualified product lines.
The 1V5KE series is part of TSC's high-power TVS portfolio engineered specifically for industrial-grade surge immunity - emphasizing robustness, tight thermal design margins, and compatibility with automated assembly processes.
FAQ
What is the maximum clamping voltage of the 1V5KE400A under standard test conditions?
The 1V5KE400A has a maximum clamping voltage (VC) of 548 V when subjected to its rated peak pulse current (IPPM) of 2.8 A using the 10/1000 µs waveform. This value is measured at TA = 25°C and represents the upper limit of voltage seen by protected circuitry during a full 1500 W surge event. The 1V5KE400A maintains this clamping performance across its specified junction temperature range.
Is the 1V5KE400A suitable for bidirectional surge protection?
No, the 1V5KE400A is a unidirectional TVS diode and is not rated for bidirectional operation. For bipolar protection, Taiwan Semiconductor offers the 1V5KE400CA variant with "CA" suffix, which provides symmetrical clamping in both polarities. Using the 1V5KE400A in reverse-biased configurations may result in premature failure due to lack of specified reverse breakdown behavior.
What is the reverse leakage current specification for the 1V5KE400A at its VRWM?
At its reverse stand-off voltage (VRWM) of 342 V and TA = 25°C, the 1V5KE400A exhibits a maximum reverse leakage current (IR) of 5 µA. This low leakage ensures minimal power loss in high-voltage standby circuits and avoids unintended loading of sensitive reference or monitoring nodes connected to the protected line.
Can the 1V5KE400A be used in surface-mount designs?
No, the 1V5KE400A is packaged exclusively in the through-hole DO-201 axial configuration and is not available in surface-mount variants such as SMA or SMC. For SMT-compatible alternatives with similar ratings, consider the SMAJ400A or SMCJ400A families - but note these differ in thermal dissipation, mounting method, and mechanical footprint from the 1V5KE400A.
Does the 1V5KE400A comply with RoHS and halogen-free standards?
Yes, the 1V5KE400A is RoHS compliant and halogen-free per IEC 61249-2-21. Its molding compound meets UL 94V-0 flammability rating, and its pure tin-plated leads satisfy J-STD-002 solderability requirements. These certifications are confirmed in Taiwan Semiconductor's official documentation for the 1V5KE6V8(C)A–1V5KE440(C)A family, which includes the 1V5KE400A.
1V5KE400A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-201AD, Axial
- Series:
- -
- 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):
- 2.8A
- 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:
- DO-201AD
1V5KE400A FAQ
1.How can I place an order for 1V5KE400A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1V5KE400A 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 1V5KE400A reliable?
The price and inventory of 1V5KE400A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1V5KE400A is usually 5 days.
3.What payment methods are accepted for 1V5KE400A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1V5KE400A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1V5KE400A?
1V5KE400A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1V5KE400A 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 1V5KE400A?
For technical support, including 1V5KE400A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1V5KE400A requirements.
6.How does Aetrix verify that 1V5KE400A is sourced from the original manufacturer or authorized distributors?
All 1V5KE400A 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 1V5KE400A meets industry standards.
7.What is the process for return or replacement of 1V5KE400A?
All 1V5KE400A units undergo pre-shipment inspection (PSI). If there is an issue with 1V5KE400A, 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 1V5KE400A part is unused and in its original packaging.
Return procedure for 1V5KE400A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1V5KE400A Tags
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