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Taiwan Semiconductor Corporation 1.5KE350CA
- Part No.:
- 1.5KE350CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE350CA.pdf
- Description:
- TVS 1500W 350.5V 5% BIDIR DO-201
- Quantity:
- Payment:
- Shipping:
Inventory:2,613
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Product details
Overview
1.5KE350CA from Taiwan Semiconductor is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with nominal breakdown voltage 350V, clamping voltage 482V at 3.2A peak pulse current, and working stand-off voltage 300V. It protects automotive and industrial power rails against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the 1.5KE350CA datasheet, 1.5KE350CA pinout, 1.5KE350CA application, or 1.5KE350CA equivalent, this page delivers verified electrical specs, polarity marking, thermal derating behavior, and AEC-Q101-qualified alternatives for high-reliability 300–350V DC bus protection.
Technical Context
The 1.5KE350CA operates as a bidirectional avalanche diode, symmetrically clamping positive and negative transients above ±333V (VBR min) with ≤482V clamping voltage at 3.2A IPP. Its low dynamic impedance and sub-5ns response time enable effective suppression of fast EFT and load-dump events.
Designed for unclamped operation up to 175°C junction temperature, it features pure tin-plated leads compliant with J-STD-002, meets UL 94V-0 flammability, and supports mounting on 16mm × 16mm copper pads for thermal management per JEDEC standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 333 V / 368 V - Ensures reliable conduction onset across production lot and temperature range |
| VWM | 300 V - Maximum continuous DC or RMS operating voltage before leakage exceeds 1 µA |
| VC @ IPP | 482 V at 3.2 A - Peak clamped voltage during 10/1000µs surge; defines protected circuit's maximum overvoltage stress |
| PPK | 1500 W - Non-repetitive peak pulse power handling capability per JEDEC test waveform |
| TJ max | +175 °C - Enables use in under-hood automotive environments without thermal derating below rated power |
| Package | DO-201 - Industry-standard axial leaded package with cathode band marking for bidirectional polarity identification |
Pinout & Package
DO-201 package: axial-leaded, molded epoxy case with cathode band marking; polarity is non-directional for bidirectional operation, but cathode band indicates terminal orientation per standard diode convention.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Transient return path | Connects to ground or low-impedance reference; forms symmetrical clamp with cathode |
| Cathode (banded end) | Transient return path | Marked terminal; identical functional role to anode in bidirectional configuration |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock |
| ISO 7637-2 compliance | Meets Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (EFT) immunity requirements |
| Low dynamic impedance | Enables rapid voltage clamping with minimal overshoot during fast-rising transients (<5 ns response) |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally constrained applications |
Applications
| Automotive Power Rail Protection | Industrial DC Bus Surge Suppression |
|---|---|
Use Scenario: Protecting 24V/48V vehicle subsystems (e.g., body control modules, lighting drivers) from load dump and jump-start transients. IC Role / Device Role / Timing Role: Bidirectional TVS placed across input terminals to clamp both polarities of ISO 7637-2 Pulse 1 (−150V) and Pulse 2b (+100V). Use Value: Limits voltage seen by downstream DC-DC converters and microcontrollers to ≤482V, preventing latch-up or gate oxide damage. | Use Scenario: Safeguarding programmable logic controllers (PLCs) and motor drives against switching surges on 300–400V DC intermediate buses. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing repetitive 10/1000µs transients induced by contactor switching or regenerative braking feedback. Use Value: Maintains system uptime by preventing overvoltage-induced MOSFET failure or ADC reference corruption during field operation. |
| LED Streetlight Driver Input Protection | Telecom Power Supply Transient Immunity |
Use Scenario: Securing constant-current LED drivers connected to outdoor AC/DC supplies exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary-level TVS on rectified DC input rail, coordinated with MOVs to handle multi-kA surge currents. Use Value: Extends driver lifetime by limiting transient energy dissipation in sensitive current-sense amplifiers and PWM controllers. | Use Scenario: Hardening -48V telecom rectifier outputs against coupling from nearby RF transmitters or power line disturbances. IC Role / Device Role / Timing Role: Fast-response bidirectional clamp ensuring EN 61000-4-4 EFT immunity ≥2 kV on power inputs. Use Value: Prevents false resets and memory corruption in baseband processors by holding supply rail within ±5% of nominal during 5 ns rise-time transients. |
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 SMAJ350CA | Same DO-214AC package; 350V VBR, 484V [email protected]; slightly higher clamping voltage (+2V); 600W rating | Lower peak power (600W vs. 1500W) limits use to lower-energy transients; not AEC-Q101 qualified | Select when board space constraints require SMD mounting and surge energy is ≤600W |
| ON Semiconductor 1.5SMC350CA | DO-214AB package; 350V VBR, 482V [email protected]; identical clamping; 1500W rating; AEC-Q101 option available | Surface-mount footprint requires PCB redesign; thermal performance differs due to pad layout and solder joint mass | Select when transitioning to SMT assembly and thermal validation confirms equivalent junction temperature rise |
Compared with 1.5KE350CA, SMAJ350CA offers compact SMD packaging but sacrifices 60% surge energy handling and automotive qualification, while 1.5SMC350CA matches power and clamping performance in SMT form-requiring layout adaptation but enabling automated assembly and improved high-frequency transient response.
Availability
1.5KE350CA is available at Aetrix Electronics and suitable for automotive electronics, industrial motor controls, and outdoor LED lighting systems requiring stable component supply and long-term lifecycle support.
Supply support for 1.5KE350CA 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, TVS diodes, and rectifiers with global distribution and AEC-Q101 certification capability.
The 1.5KE series was developed for high-energy transient suppression in harsh automotive and industrial environments, emphasizing robustness, repeatable clamping, and compliance with ISO 7637-2 and RoHS requirements.
FAQ
What is the maximum clamping voltage of the 1.5KE350CA under standard 10/1000µs surge conditions?
The 1.5KE350CA has a maximum clamping voltage (VC) of 482 V at 3.2 A peak pulse current (IPP), measured per the 10/1000 µs double-exponential waveform defined in JEDEC standards. This value ensures downstream components experience no more than 482 V during worst-case transient events, directly supporting design margin calculations for 300–400 V DC systems. The 1.5KE350CA datasheet specifies this parameter at TA = 25°C with derating applied above ambient.
Is the 1.5KE350CA suitable for automotive applications requiring AEC-Q101 qualification?
Yes, the 1.5KE350CA is explicitly AEC-Q101 qualified per Taiwan Semiconductor documentation, having passed stress tests including temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing. This makes the 1.5KE350CA appropriate for under-hood and chassis-mounted automotive modules where reliability under thermal and mechanical stress is mandatory. The "A" suffix in 1.5KE350CA confirms AEC-Q101 compliance.
How does the bidirectional configuration of the 1.5KE350CA affect its connection in a circuit?
The 1.5KE350CA is a bidirectional TVS diode, meaning it clamps transients of either polarity symmetrically across its terminals. Unlike unidirectional types, it does not require orientation-specific placement-it functions identically regardless of which lead connects to line or ground. However, the cathode band marking remains present per DO-201 convention and must be documented in schematics for traceability. The 1.5KE350CA achieves this via back-to-back Zener junctions in a single die.
What is the working stand-off voltage (VWM) of the 1.5KE350CA, and why is it critical for system design?
The 1.5KE350CA has a working stand-off voltage (VWM) of 300 V, representing the maximum continuous DC or RMS voltage that can be applied without exceeding 1 µA leakage current. This parameter is critical because it defines the upper limit of normal operating voltage-designers must ensure system nominal voltage (e.g., 270–290 V DC bus) stays below 300 V to prevent premature conduction and power loss. Exceeding VWM risks thermal runaway or accelerated aging, especially at elevated temperatures.
Does the 1.5KE350CA meet international ESD and surge immunity standards beyond ISO 7637-2?
The 1.5KE350CA meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b for automotive transient immunity, and its construction complies with RoHS and halogen-free standards (IEC 61249-2-21). While not explicitly rated for IEC 61000-4-2 (ESD) or IEC 61000-4-5 (surge), its 1500W 10/1000µs rating and low clamping voltage make it suitable for system-level implementation targeting those standards-provided board-level layout, grounding, and coordination with other protectors (e.g., GDTs, MOVs) are validated. The 1.5KE350CA itself is not certified to IEC 61000-4-x series.
1.5KE350CA 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):
- 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-201
1.5KE350CA FAQ
1.How can I place an order for 1.5KE350CA through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE350CA 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 1.5KE350CA reliable?
The price and inventory of 1.5KE350CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE350CA is usually 5 days.
3.What payment methods are accepted for 1.5KE350CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE350CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE350CA?
1.5KE350CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE350CA 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 1.5KE350CA?
For technical support, including 1.5KE350CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE350CA requirements.
6.How does Aetrix verify that 1.5KE350CA is sourced from the original manufacturer or authorized distributors?
All 1.5KE350CA 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 1.5KE350CA meets industry standards.
7.What is the process for return or replacement of 1.5KE350CA?
All 1.5KE350CA units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE350CA, 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 1.5KE350CA part is unused and in its original packaging.
Return procedure for 1.5KE350CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE350CA Tags
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