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Taiwan Semiconductor Corporation 1.5KE350C
- Part No.:
- 1.5KE350C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE350C.pdf
- Description:
- 1500W, 350V, 10%, BIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:6,986
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Product details
Overview
1.5KE350C from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with nominal breakdown voltage 350V, clamping voltage 504V at 3.1A peak pulse current, and working stand-off voltage 284V. It protects automotive and industrial power rails against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the 1.5KE350C datasheet, 1.5KE350C pinout, 1.5KE350C application, or 1.5KE350C equivalent, this page delivers verified electrical specs, DO-201 terminal configuration, AEC-Q101 qualification status, clamping performance under 10/1000μs surge, and real-world ESD/inductive switching protection use cases.
Technical Context
The 1.5KE350C operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its 315–385V breakdown range (tested at 1mA). Its low dynamic impedance ensures rapid clamping response (<1.0ps from 0V to VBR) and limits transient energy dissipation across sensitive downstream circuitry.
Rated for 1500W non-repetitive peak pulse power (10/1000μs waveform), it sustains 5W steady-state power at 75°C lead temperature and withstands 200A forward surge current (8.3ms half-sine). Junction temperature range is –55°C to +175°C, supporting under-hood automotive deployment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT = 1mA | 315–385V - Confirmed breakdown voltage range defining turn-on threshold for overvoltage events |
| VWM | 284V - Maximum continuous reverse operating voltage before leakage exceeds 1µA |
| VC @ IPP = 3.1A | 504V - Clamped voltage during 10/1000μs surge, limiting stress on protected ICs or MOSFETs |
| PPK | 1500W - Peak pulse power handling capability per single transient event (non-repetitive) |
| IPP | 3.1A - Maximum peak impulse current supported at rated clamping voltage |
| Junction Temp Range | –55°C to +175°C - Enables operation in engine control units, power converters, and industrial motor drives |
| Leakage @ VWM | <1µA - Minimal standby power loss and signal integrity impact in high-impedance circuits |
Pinout & Package
Package: DO-201 axial-leaded plastic case with cathode band marking; RoHS-compliant, halogen-free molding compound (UL 94V-0); pure tin-plated leads solderable per J-STD-002; weight ≈0.090g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path / low-side reference | Connected to ground or low-voltage rail in unidirectional clamp configuration |
| Cathode | Transient voltage sensing node | Connected to protected line (e.g., 24V supply rail); conducts avalanche current during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Clamping ratio (VC/VBR) | ~1.35 - Low ratio ensures tight voltage margin between breakdown and clamping, reducing component stress |
| Response time | <1.0ps - Near-instantaneous turn-on enables protection of fast-edge digital interfaces and microcontrollers |
| ISO 7637-2 compliance | Meets Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (ESD-like noise) |
| Low dynamic impedance | Enables stable clamping under varying surge amplitudes without voltage runaway |
Applications
| Automotive Power Rail Protection | Industrial DC Power Input Stage |
|---|---|
Use Scenario: Protecting 24V CAN bus power lines in vehicle ECUs against load dump and alternator transients. IC Role / Device Role: Unidirectional TVS placed between VBAT and chassis ground to shunt surge energy away from CAN transceivers and MCU power supplies. Use Value: Limits clamped voltage to 504V during 10/1000μs 1500W surges, preventing latch-up or gate oxide damage in 3.3V/5V logic devices. |
Use Scenario: Safeguarding 48V input stage of programmable logic controllers (PLCs) exposed to relay coil flyback and lightning-induced surges. IC Role / Device Role: Primary overvoltage clamp on main DC input, upstream of DC-DC converters and isolation barriers. Use Value: Withstands 200A forward surge (8.3ms) and maintains <1µA leakage at 284V, ensuring long-term reliability without standby current penalty. |
| LED Driver Output Protection | Motor Drive Gate Driver Supply |
Use Scenario: Shielding constant-current LED driver outputs from inductive kickback when driving high-power arrays. IC Role / Device Role: Parallel-connected TVS across output terminals to absorb reverse EMF from disconnected loads or wiring faults. Use Value: Fast <1.0ps response prevents voltage overshoot beyond 504V, avoiding catastrophic failure of output MOSFETs or current-sense amplifiers. |
Use Scenario: Protecting isolated gate driver bias supplies (e.g., 15V) in three-phase inverter modules from cross-conduction transients. IC Role / Device Role: Clamp placed across gate driver VDD–GND to suppress coupling from high-dV/dt switching nodes. Use Value: Operates reliably from –55°C to +175°C ambient, matching junction temperature requirements of IGBT/SiC gate drivers in traction inverters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ350A | DO-214AC (SMA) package; 350V VWM; 504V VC @ 3.1A; 400W PPK | Lower surge rating (400W vs. 1500W); suited for lower-energy transients or space-constrained PCBs | Select when board layout favors surface-mount and system-level surge energy is ≤400W |
| ON Semiconductor 1N6298 | DO-201 package; identical 130V nominal rating but 130V VBR (117–143V); 187V VC @ 8.4A | Designed for 130V systems (e.g., legacy telecom); not voltage-compatible with 350V rail protection | Not interchangeable - choose only for 130V applications requiring same form factor and AEC-Q101 grade |
Compared with 1.5KE350C, SMAJ350A offers SMT compatibility but sacrifices 73% peak power handling; 1N6298 shares packaging and qualification but targets a different voltage class entirely - neither serves as a drop-in replacement, and voltage-specific selection remains critical for safe clamping margin.
Availability
1.5KE350C is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC power inputs, LED driver output stages, and motor drive gate supply protection requiring stable component supply across extended temperature ranges and high-reliability environments.
Supply support for 1.5KE350C 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 for automotive and industrial markets.
The 1.5KE series was designed specifically for high-energy transient suppression in harsh environments - emphasizing AEC-Q101 qualification, ISO 7637-2 compliance, and robust DO-201 packaging for under-hood and factory-floor deployment.
FAQ
What is the breakdown voltage tolerance of the 1.5KE350C?
The 1.5KE350C has a guaranteed breakdown voltage range of 315V to 385V when tested at 1mA (VBR @ IT = 1mA), per Taiwan Semiconductor's O2104 datasheet revision. This ±10% tolerance ensures consistent clamping behavior across production lots while accommodating thermal drift and manufacturing variance.
Is the 1.5KE350C bidirectional or unidirectional?
The 1.5KE350C is a unidirectional TVS diode, indicated by the "C" suffix and confirmed by its cathode band marking and specification of forward voltage (VF = 3.5V @ 50A). Bidirectional variants in the same family carry "CA" suffixes (e.g., 1.5KE350CA) and lack forward voltage ratings.
Does the 1.5KE350C meet AEC-Q101 requirements?
Yes - the 1.5KE350C is explicitly listed as AEC-Q101 qualified in the "FEATURES" section of the official datasheet. This qualification covers stress tests including high-temperature reverse bias (HTRB), temperature cycling, and electrostatic discharge (ESD), validating suitability for automotive power electronics.
What is the maximum clamping voltage of the 1.5KE350C under surge conditions?
The 1.5KE350C clamps to a maximum of 504V when subjected to its rated peak pulse current of 3.1A (10/1000μs waveform), as specified in the Electrical Specifications table. This value defines the upper voltage limit imposed on protected circuitry during worst-case transients.
Can the 1.5KE350C be used in place of the 1.5KE350A?
No - the 1.5KE350C and 1.5KE350A differ in breakdown voltage tightness: 1.5KE350C has VBR = 315–385V, while 1.5KE350A is tighter at 333–368V. Substituting them requires revalidation of clamping margin and system-level surge immunity, as the wider tolerance may affect protection window in precision designs.
1.5KE350C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- 1.5KE
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 284V
- Voltage - Breakdown (Min):
- 315V
- Voltage - Clamping (Max) @ Ipp:
- 504V
- Current - Peak Pulse (10/1000µs):
- 3.1A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201
1.5KE350C FAQ
1.How can I place an order for 1.5KE350C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE350C 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 1.5KE350C reliable?
The price and inventory of 1.5KE350C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE350C is usually 5 days.
3.What payment methods are accepted for 1.5KE350C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE350C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE350C?
1.5KE350C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE350C 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 1.5KE350C?
For technical support, including 1.5KE350C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE350C requirements.
6.How does Aetrix verify that 1.5KE350C is sourced from the original manufacturer or authorized distributors?
All 1.5KE350C 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 1.5KE350C meets industry standards.
7.What is the process for return or replacement of 1.5KE350C?
All 1.5KE350C units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE350C, 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 1.5KE350C part is unused and in its original packaging.
Return procedure for 1.5KE350C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE350C Tags
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