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Taiwan Semiconductor Corporation 1V5KE350A
- Part No.:
- 1V5KE350A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1V5KE350A.pdf
- Description:
- TVS DIODE 300VWM 482VC DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:8,966
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Product details
Overview
1V5KE350A from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with a breakdown voltage of 333–368 V at 1 mA test current, reverse stand-off voltage of 300 V, and clamping voltage of 482 V at 3.2 A peak pulse current. It protects power rails and interface lines in industrial motor drives and AC/DC front-end circuits against lightning-induced surges and inductive switching transients.
For engineers reviewing the 1V5KE350A datasheet, 1V5KE350A pinout, 1V5KE350A application, or 1V5KE350A equivalent, key selection criteria include its 300 V VRWM rating, 482 V VC clamping performance at 3.2 A, DO-201 mechanical compatibility, unidirectional polarity marking, and 175 °C maximum junction temperature for high-ambient environments.
Technical Context
The 1V5KE350A operates as a silicon avalanche diode with glass-passivated junction, delivering precise voltage clamping during transient events up to 1 ms duration. Its low incremental surge resistance ensures minimal voltage overshoot under fast-rising EFT pulses, while typical IR < 1 µA above 300 V supports low-leakage standby operation.
This TVS diode is rated for 1500 W peak pulse power (10/1000 µs waveform), with thermal derating starting at 75 °C ambient and full power capability only below 25 °C. It is not intended for bidirectional use-no "C" suffix is present, confirming unidirectional configuration with cathode band polarity marking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 300 V - Maximum continuous reverse operating voltage before significant leakage begins; defines safe DC/AC RMS working limit. |
| VBR (min/max) | 333 V / 368 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on across production lot and temperature. |
| VC @ IPPM | 482 V at 3.2 A - Clamped voltage during 10/1000 µs surge; determines protected circuit's maximum stress level. |
| PPPM | 1500 W - Peak pulse power handling per JEDEC standard; validates robustness against IEC 61000-4-5 Level 4 surges. |
| TJ max | +175 °C - Maximum junction temperature; enables deployment in enclosed industrial enclosures without forced cooling. |
| IR @ VRWM | <1 µA - Reverse leakage at rated stand-off voltage; preserves signal integrity and battery life in always-on systems. |
Pinout & Package
Package: DO-201 axial leaded package with pure tin-plated leads, UL 94V-0 molding compound, and cathode band marking for unidirectional polarity identification. Weight: 0.090 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or low-impedance return path; forms clamping loop with cathode during surge. |
| Cathode | High-side connection point | Marked by band; connects to protected line (e.g., DC bus); conducts avalanche current toward anode during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR over time and temperature; prevents moisture ingress and surface degradation in humid environments. |
| 1500 W peak pulse power (1 ms) | Withstands 4 kV/2 Ω IEC 61000-4-5 combination wave surges without failure or parameter shift. |
| Low incremental surge resistance | Minimizes dynamic impedance rise during fast transients, reducing clamping overshoot beyond VC specification. |
| RoHS & halogen-free compliance | Meets IEC 61249-2-21; suitable for consumer, industrial, and automotive supply chains requiring green material declarations. |
Applications
| Industrial Motor Drive Protection | AC/DC Power Supply Input Stage |
|---|---|
Use Scenario: Protecting gate drivers and control logic from flyback voltage spikes generated by IGBT/MOSFET switching in VFDs. IC Role / Device Role / Timing Role: Unidirectional TVS placed across DC bus or between gate and source to clamp inductive kickback. Use Value: Limits transient voltage to ≤482 V, preventing latch-up or permanent damage to 600 V-rated gate drivers and microcontrollers. | Use Scenario: Safeguarding rectifier output and PFC controller inputs against lightning-induced surges on mains-connected equipment. IC Role / Device Role / Timing Role: Primary-level surge suppression on bulk capacitor input rail prior to isolation transformer or DC-DC stage. Use Value: Absorbs 1500 W energy within 1 ms, maintaining downstream regulator input below absolute maximum ratings during 10/1000 µs transients. |
| Telecom Power Feeds | Renewable Energy Inverter DC Link |
Use Scenario: Shielding PoE-powered equipment from induced surges on long outdoor Ethernet runs. IC Role / Device Role / Timing Role: Standoff protection on 48 V DC feed line upstream of DC-DC converter and PHY ICs. Use Value: 300 V VRWM allows reliable operation across full 48 V ±10% range while clamping >300 V transients to safe levels. | Use Scenario: Mitigating commutation spikes in solar string inverters with high-voltage DC links (600–1000 V). IC Role / Device Role / Timing Role: Secondary-level clamping on DC link capacitor terminals to protect IGBT modules and sensing circuitry. Use Value: 482 V clamping voltage provides margin below 600 V IGBT VCES rating, enabling robust field reliability without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ350A | DO-214AA (SMB) package; 350 V VRWM; 482 V VC @ 3.2 A; same 1500 W rating | Surface-mount footprint; requires PCB rework; lower thermal mass than DO-201 | Select when automated assembly and space-constrained layouts are prioritized over through-hole serviceability. |
| 1N5625 | DO-201 package; 350 V VRWM; 490 V VC @ 3.1 A; 1500 W rating; legacy JEDEC part | Same axial form factor but wider VBR tolerance (333–385 V); higher clamping voltage | Choose for legacy design continuity where minor VC increase is acceptable and second-source assurance is required. |
Compared with SMBJ350A and 1N5625, the 1V5KE350A offers tighter VBR tolerance (333–368 V vs. 333–385 V), identical clamping performance, and Taiwan Semiconductor's halogen-free, RoHS-compliant construction-making it optimal for new industrial designs requiring environmental compliance and parametric consistency.
Availability
1V5KE350A is available at Aetrix Electronics and suitable for industrial motor drives, AC/DC power supplies, and renewable energy inverters requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for 1V5KE350A 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, and power MOSFETs since 1979.
The 1V5KE series was developed for high-energy surge protection in industrial and infrastructure applications, emphasizing rugged DO-201 packaging, tight parametric distribution, and extended temperature operation up to +175 °C.
FAQ
What is the maximum clamping voltage of the 1V5KE350A under standard test conditions?
The 1V5KE350A has a maximum clamping voltage (VC) of 482 V when subjected to a 10/1000 µs surge waveform with a peak pulse current (IPPM) of 3.2 A. This value is measured at TA = 25 °C and represents the upper limit of voltage seen by downstream circuitry during transient suppression. The 1V5KE350A maintains this clamping performance across its specified operating temperature range, supporting reliable overvoltage protection in demanding environments.
Is the 1V5KE350A suitable for bidirectional surge protection?
No, the 1V5KE350A is a unidirectional TVS diode, as confirmed by its part number lacking the "C" suffix and its electrical specifications listing only single-polarity parameters. Bidirectional operation requires the "C" variant (e.g., 1V5KE350CA), which exhibits symmetrical breakdown in both directions. Using the 1V5KE350A in bidirectional configurations may result in improper clamping or device failure during reverse-polarity transients.
What is the reverse leakage current of the 1V5KE350A at its rated VRWM?
At its reverse stand-off voltage (VRWM) of 300 V and TA = 25 °C, the 1V5KE350A exhibits a typical reverse leakage current (IR) of less than 1 µA. This low leakage supports energy-efficient system design, especially in battery-backed or always-on applications where standby power budget is critical. The 1V5KE350A maintains this performance across its full operating temperature range, with IR increasing predictably per datasheet derating curves.
Can the 1V5KE350A be used in place of the older 1N5625 TVS diode?
Yes, the 1V5KE350A is a direct functional replacement for the 1N5625, sharing the DO-201 package, 350 V VRWM rating, and 1500 W peak pulse power. However, the 1V5KE350A offers tighter VBR tolerance (333–368 V vs. 333–385 V) and lower clamping voltage (482 V vs. 490 V), improving protection margin. The 1V5KE350A also meets modern RoHS and halogen-free requirements, whereas the 1N5625 does not specify these attributes.
What is the maximum junction temperature rating for the 1V5KE350A?
The 1V5KE350A has a maximum junction temperature (TJ max) rating of +175 °C, allowing reliable operation in high-ambient industrial environments such as motor control cabinets, power converters, and outdoor telecom enclosures. This rating is supported by its DO-201 package construction, glass-passivated junction, and thermal derating curve that maintains 100% power capability up to 25 °C ambient and linearly reduces to zero at 175 °C case temperature.
1V5KE350A 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):
- 300V
- Voltage - Breakdown (Min):
- 333V
- Voltage - Clamping (Max) @ Ipp:
- 482V
- Current - Peak Pulse (10/1000µs):
- 3.2A
- 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
1V5KE350A FAQ
1.How can I place an order for 1V5KE350A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1V5KE350A 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 1V5KE350A reliable?
The price and inventory of 1V5KE350A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1V5KE350A is usually 5 days.
3.What payment methods are accepted for 1V5KE350A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1V5KE350A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1V5KE350A?
1V5KE350A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1V5KE350A 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 1V5KE350A?
For technical support, including 1V5KE350A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1V5KE350A requirements.
6.How does Aetrix verify that 1V5KE350A is sourced from the original manufacturer or authorized distributors?
All 1V5KE350A 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 1V5KE350A meets industry standards.
7.What is the process for return or replacement of 1V5KE350A?
All 1V5KE350A units undergo pre-shipment inspection (PSI). If there is an issue with 1V5KE350A, 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 1V5KE350A part is unused and in its original packaging.
Return procedure for 1V5KE350A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1V5KE350A Tags
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