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Taiwan Semiconductor Corporation 1V5KE250A
- Part No.:
- 1V5KE250A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1V5KE250A.pdf
- Description:
- TVS DIODE 214VWM 344VC DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:4,718
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Product details
Overview
1V5KE250A from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with a breakdown voltage of 237–263 V at 1 mA test current, reverse stand-off voltage of 214 V, and clamping voltage of 344 V at 4.5 A peak pulse current. It protects power rails and I/O lines against ESD, lightning-induced surges, and inductive switching transients in industrial power supplies and motor drives.
For engineers reviewing the 1V5KE250A datasheet, 1V5KE250A pinout, 1V5KE250A application, or 1V5KE250A equivalent, key selection criteria include its 214 V VRWM rating, 344 V VC clamping performance under 4.5 A IPPM, DO-201 mechanical compatibility, RoHS/halogen-free compliance, and unidirectional polarity marking for correct PCB orientation.
Technical Context
The 1V5KE250A operates as a silicon avalanche diode with glass-passivated junction, delivering fast response time (<1 ns) and low incremental surge resistance to limit transient overvoltage before downstream components are stressed. Its 1500 W peak pulse power rating (10/1000 µs waveform) and 175 °C maximum junction temperature support robust protection in high-energy surge environments.
Designed for unidirectional DC line protection, it exhibits <1 µA reverse leakage above 10 V and maintains stable clamping across ambient temperatures from –55 °C to +175 °C. The device is not rated for bidirectional use unless specified with "C" suffix (e.g., 1V5KE250CA), and polarity is marked by cathode band on DO-201 body.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 214 V - Maximum continuous reverse operating voltage before significant leakage begins; sets safe DC bias margin. |
| VBR (min/max) | 237 / 263 V @ 1 mA - Avalanche breakdown range defining turn-on threshold tolerance for surge initiation. |
| VC @ IPPM | 344 V @ 4.5 A - Clamped voltage during 10/1000 µs surge; determines worst-case overvoltage seen by protected IC. |
| PPPM | 1500 W - Peak pulse power handling per JEDEC standard; defines single-event surge energy capacity. |
| TJ max | +175 °C - Maximum junction temperature; enables operation in high-ambient industrial enclosures. |
| IR @ VRWM | <1 µA - Reverse leakage at rated stand-off voltage; ensures minimal standby power loss and signal integrity. |
| Package | DO-201 - Axial-leaded, through-hole package with UL 94V-0 molding compound and tin-plated leads. |
Pinout & Package
DO-201 package: axial-leaded, cylindrical epoxy body with cathode band marking polarity. Leads are pure tin-plated, solderable per J-STD-002, and meet JESD 201 Class 2 whisker resistance. Weight ≈ 0.090 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to circuit ground or lower-potential rail; forms forward-biased path during surge conduction. |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., 24 V DC bus); avalanche conduction occurs when voltage exceeds VBR relative to anode. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable avalanche characteristics and long-term reliability under repeated surge stress without degradation. |
| 1500 W peak pulse power (1 ms) | Handles high-energy transients such as IEC 61000-4-5 Level 4 (4 kV, 2 Ω source) without failure. |
| Clamping ratio VC/VBR ≈ 1.34 | Indicates tight voltage control-lower ratio means less overvoltage stress on downstream MOSFETs or controllers. |
| RoHS & halogen-free compliant | Meets IEC 61249-2-21 and environmental regulations for industrial and automotive supply chains. |
| Fast response time (<1 ns) | Activates before most semiconductor damage thresholds are exceeded, enabling effective pre-failure protection. |
Applications
| Industrial Power Supply Protection | Motor Drive DC Bus Clamping |
|---|---|
Use Scenario: Protecting 24 V or 48 V DC input rails in programmable logic controllers (PLCs) against load dump and relay coil flyback. IC Role / Device Role / Timing Role: Unidirectional TVS placed between input rail and chassis ground to clamp positive-going transients. Use Value: Limits voltage excursion to ≤344 V during 4.5 A surge, preventing gate oxide rupture in upstream DC/DC controllers. | Use Scenario: Safeguarding H-bridge driver ICs and freewheeling diodes from inductive kickback during PWM switching in servo amplifiers. IC Role / Device Role / Timing Role: Mounted across DC bus terminals to absorb stored energy from motor windings during rapid current interruption. Use Value: Absorbs up to 1500 W peak power without thermal runaway, maintaining bus voltage within 344 V for 10/1000 µs. |
| Lighting System Surge Suppression | Telecom Power Interface Protection |
Use Scenario: Shielding LED driver inputs in outdoor street lighting from lightning-induced surges coupled via AC mains or metal poles. IC Role / Device Role / Timing Role: First-stage protection device on rectified DC output, ahead of bulk capacitor and controller IC. Use Value: Withstands repetitive 10/1000 µs surges up to 1500 W while exhibiting <1 µA leakage at 214 V, preserving efficiency. | Use Scenario: Protecting -48 V telecom power distribution boards from accidental battery reversal and hot-swap transients. IC Role / Device Role / Timing Role: Unidirectional TVS connected cathode-to-rail to clamp negative excursions during fault conditions. Use Value: Maintains 214 V reverse stand-off with negligible leakage, ensuring no false triggering during normal -48 V operation. |
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 P6SMB250A | Same DO-201 package, identical 214 V VRWM and 344 V VC, but rated for 600 W (not 1500 W) peak pulse power. | Not suitable for IEC 61000-4-5 Level 4; limited to lower-energy transients like ESD or EFT. | Select only where surge energy is confirmed ≤600 W; verify waveform compliance before substitution. |
| ON Semiconductor 1N6285A | Same family, same 1500 W rating and DO-201 package, but 39 V VBR (37.1–41 V), making it incompatible for 250 V systems. | Designed for 36 V DC systems-not electrically interchangeable with 1V5KE250A due to 6× lower breakdown voltage. | Use only in 36 V applications; not a functional alternative for 214 V stand-off requirements. |
Compared with P6SMB250A and 1N6285A, the 1V5KE250A uniquely delivers 1500 W surge capability at 214 V VRWM in DO-201, enabling single-device protection for high-energy industrial transients where lower-power or lower-voltage alternatives fail.
Availability
1V5KE250A is available at Aetrix Electronics and suitable for industrial power supplies, motor drive DC bus clamping, outdoor LED lighting surge protection, and telecom -48 V interface protection requiring stable component supply and long-lifecycle availability.
Supply support for 1V5KE250A 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 Taiwanese manufacturer specializing in discrete semiconductors, including TVS diodes, rectifiers, and transistors, with ISO 9001 and IATF 16949 certification.
The 1V5KE series is part of TSC's high-power TVS portfolio designed specifically for industrial-grade surge immunity in harsh environments-emphasizing reliability, repeatable clamping, and extended temperature operation.
FAQ
What is the maximum clamping voltage of the 1V5KE250A under surge conditions?
The 1V5KE250A has a maximum clamping voltage (VC) of 344 V at 4.5 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per JEDEC test conditions and represents the highest voltage the device allows across its terminals during a defined surge event, directly limiting overvoltage stress on protected circuitry.
Is the 1V5KE250A suitable for bidirectional transient protection?
No, the 1V5KE250A is unidirectional only. Bidirectional operation requires the "C" suffix variant (1V5KE250CA). The 1V5KE250A features a cathode band marking and conducts only when the cathode is more positive than the anode-making it inappropriate for AC or dual-polarity rail protection without external circuitry.
What is the reverse leakage current specification for the 1V5KE250A at its rated VRWM?
At its reverse stand-off voltage (VRWM) of 214 V, the 1V5KE250A exhibits less than 1 µA reverse leakage current when tested at 25 °C. This low leakage ensures minimal power loss and avoids false triggering in high-impedance sensing or precision bias networks downstream of the device.
Can the 1V5KE250A be used in surface-mount designs?
No-the 1V5KE250A is packaged exclusively in the axial-leaded DO-201 through-hole format. It is not available in SMD variants such as SMA or SMC. For surface-mount equivalents with similar ratings, consider TSC's SMAJ250A or consult alternate families; the 1V5KE250A requires through-hole PCB layout and wave/soldering processes.
What is the junction temperature limit and derating behavior of the 1V5KE250A?
The 1V5KE250A has a maximum junction temperature (TJ) of +175 °C and derates linearly from full 1500 W pulse power at 25 °C ambient to zero at approximately 175 °C case temperature. Steady-state power dissipation is limited to 5 W at 75 °C lead temperature, per the 0.375 inch lead length condition specified in the absolute maximum ratings table.
1V5KE250A 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):
- 214V
- Voltage - Breakdown (Min):
- 237V
- Voltage - Clamping (Max) @ Ipp:
- 344V
- Current - Peak Pulse (10/1000µs):
- 4.5A
- 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
1V5KE250A FAQ
1.How can I place an order for 1V5KE250A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1V5KE250A 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 1V5KE250A reliable?
The price and inventory of 1V5KE250A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1V5KE250A is usually 5 days.
3.What payment methods are accepted for 1V5KE250A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1V5KE250A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1V5KE250A?
1V5KE250A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1V5KE250A 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 1V5KE250A?
For technical support, including 1V5KE250A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1V5KE250A requirements.
6.How does Aetrix verify that 1V5KE250A is sourced from the original manufacturer or authorized distributors?
All 1V5KE250A 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 1V5KE250A meets industry standards.
7.What is the process for return or replacement of 1V5KE250A?
All 1V5KE250A units undergo pre-shipment inspection (PSI). If there is an issue with 1V5KE250A, 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 1V5KE250A part is unused and in its original packaging.
Return procedure for 1V5KE250A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1V5KE250A Tags
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