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Taiwan Semiconductor Corporation 1.5KE350CA R0G
- Part No.:
- 1.5KE350CA R0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE350CA R0G.pdf
- Description:
- TVS DIODE 300VWM 482VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:2,662
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Product details
Overview
1.5KE350CA R0G from Taiwan Semiconductor is a bidirectional 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 1.5KE350CA R0G datasheet, 1.5KE350CA R0G pinout, 1.5KE350CA R0G application, or 1.5KE350CA R0G equivalent, key selection criteria include bidirectional clamping capability, 10/1000μs surge rating, AEC-Q101 qualification status, junction temperature range (–55°C to +175°C), and DO-201 mechanical compatibility.
Technical Context
This bidirectional TVS diode operates symmetrically in both polarities, delivering consistent clamping performance across positive and negative transients. Its low dynamic impedance and sub-5ns response time ensure rapid suppression of fast electrical fast transients (EFT) and load-dump spikes.
The device meets ISO 7637-2 immunity requirements for automotive electronics and supports unidirectional forward surge current up to 200A (8.3ms half-sine). Thermal derating follows JEDEC standards, with 1500W peak power limited to TA = 25°C and reduced linearly above that ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500W at 10/1000μs waveform - sustains single high-energy surges without failure |
| Breakdown Voltage VBR | 315–385V @ IT = 1mA - defines reliable conduction onset under transient stress |
| Clamping Voltage VC | 504V @ IPP = 3.1A - maximum voltage seen by protected circuit during rated surge |
| Working Stand-off Voltage VWM | 284V - maximum continuous DC or RMS voltage before leakage exceeds 1μA |
| Junction Temperature Range | –55°C to +175°C - enables operation in under-hood automotive and industrial environments |
| Response Time | <5.0ns - ensures suppression of nanosecond-scale EFT and coupling-induced spikes |
| Leakage Current ID | <1μA @ VWM - minimizes standby power loss and avoids false triggering |
Pinout & Package
DO-201 axial-leaded package with cathode band marking for polarity identification; leads are pure tin-plated and solderable per J-STD-002; weight ≈ 0.090g; UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Current entry point in reverse bias | Connected to line or signal being protected; forms symmetrical clamp path with cathode |
| Cathode (banded end) | Current exit point in reverse bias | Marked terminal; establishes reference for bidirectional clamping behavior |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HAST, and mechanical shock |
| ISO 7637-2 compliance | Withstands Pulse 1 (inductive load dump), Pulse 2a/2b (battery disconnect), and Pulse 3a/3b (EFT) |
| Low clamping ratio (VC/VBR) | ~1.43 - tight voltage margin between breakdown and clamping improves system-level protection margin |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU Directive 2011/65/EU for environmentally constrained applications |
| JEDEC DO-201 footprint | Standardized mechanical interface compatible with legacy PCB layouts and automated assembly |
Applications
| Automotive Power Rail Protection | Industrial Motor Drive Input Stage |
|---|---|
Use Scenario: 12V/24V battery-fed ECUs exposed to load dump and jump-start transients. IC Role / Device Role / Timing Role: Bidirectional TVS placed across input terminals to clamp ±200V+ spikes within microseconds. Use Value: Prevents damage to upstream DC-DC controllers and downstream microcontrollers during ISO 7637-2 Pulse 5a events. |
Use Scenario: AC/DC front-end of variable-frequency drives subjected to inductive switching noise. IC Role / Device Role / Timing Role: Transient suppressor on rectified bus to absorb commutation energy from IGBT gate drivers. Use Value: Limits voltage overshoot to ≤504V during 3.1A surge, preserving electrolytic capacitor lifetime and MOSFET SOA. |
| LED Streetlight Surge Protection | Telecom Power Interface |
Use Scenario: Outdoor LED luminaires connected to unshielded overhead lines vulnerable to lightning-induced surges. IC Role / Device Role / Timing Role: Primary-level TVS on AC input stage before bridge rectifier to shunt common-mode transients. Use Value: Absorbs 1500W 10/1000μs surges without degradation, meeting IEC 61000-4-5 Level 4 immunity requirements. |
Use Scenario: DC power feed to remote radio units in cellular base stations experiencing induced surges from nearby lightning strikes. IC Role / Device Role / Timing Role: Bidirectional clamp on –48V telecom supply rail to protect PMICs and monitoring ICs. Use Value: Maintains <1μA leakage at 284V stand-off while clamping to 504V, ensuring uninterrupted operation during transient events. |
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 (SMA) package; 350V VBR min/max tighter (332–368V); lower PPK = 400W | Lower surge rating limits use to sub-400W systems; not AEC-Q101 qualified | Select when space-constrained layout requires surface-mount and full 1500W rating is unnecessary |
| Vishay 1.5SMC350CA | DO-214AB (SMC) package; identical 350V VBR range and 1500W rating; AEC-Q101 option available (1.5SMC350CAH) | 10.3×7.1mm SMC footprint differs from DO-201's 5.3×2.7mm axial form factor; requires PCB redesign | Choose when higher thermal mass and board-level robustness outweigh axial lead compatibility needs |
Compared with 1.5KE350CA R0G, SMAJ350CA offers smaller size but sacrifices 73% surge capacity and automotive qualification, while 1.5SMC350CA matches power and qualification but demands mechanical rework due to larger SMC footprint and different lead geometry.
Availability
1.5KE350CA R0G is available at Aetrix Electronics and suitable for automotive ECUs, industrial motor drives, outdoor LED lighting, and telecom power interfaces requiring stable component supply and long-term lifecycle support.
Supply support for 1.5KE350CA R0G 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 validation capabilities.
The 1.5KE series was designed specifically for high-energy transient suppression in automotive and industrial environments where reliability under ISO 7637-2 and wide temperature operation are mandatory.
FAQ
What does the 'CA' suffix indicate in 1.5KE350CA R0G?
The 'CA' suffix in 1.5KE350CA R0G denotes bidirectional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., 1.5KE350A), 1.5KE350CA R0G has no inherent anode/cathode polarity in normal operation and clamps equally in either direction, making it ideal for AC-coupled or floating-rail protection schemes.
Is 1.5KE350CA R0G AEC-Q101 qualified?
Yes, 1.5KE350CA R0G is AEC-Q101 qualified. The 'R0G' ordering code corresponds to the standard qualified version per TSC documentation, confirming compliance with stress tests including temperature cycling, highly accelerated stress testing (HAST), and mechanical shock - essential for under-hood automotive applications where reliability under thermal and vibration stress is critical.
What is the maximum clamping voltage of 1.5KE350CA R0G at its rated surge current?
The maximum clamping voltage of 1.5KE350CA R0G is 504V at a peak pulse current (IPP) of 3.1A under the standard 10/1000μs waveform. This value is measured per JEDEC test conditions and represents the upper limit voltage imposed on the protected circuit during a full-rated transient event - a key parameter for verifying safe operating area margins of downstream components.
Can 1.5KE350CA R0G be used in place of a unidirectional TVS like 1.5KE350A?
No - 1.5KE350CA R0G cannot directly replace 1.5KE350A in unidirectional applications without circuit review. While both share identical breakdown and clamping specs, 1.5KE350CA R0G lacks defined polarity and conducts in both directions, potentially interfering with DC biasing or causing unintended conduction in single-polarity rails. Use only where bidirectional clamping is explicitly required and verified in system-level testing.
What is the thermal derating behavior of 1.5KE350CA R0G above 25°C ambient?
1.5KE350CA R0G follows JEDEC-standard linear derating: peak pulse power decreases from 1500W at TA = 25°C to zero at TA = 175°C. Derating is approximately 12.5W/°C above 25°C when mounted on a 16mm × 16mm copper pad. This must be accounted for in high-temperature environments such as engine compartments, where sustained ambient >85°C reduces effective surge capability by over 50%.
1.5KE350CA R0G 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:
- Discontinued at Digi-Key
- 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 R0G FAQ
1.How can I place an order for 1.5KE350CA R0G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE350CA R0G 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 R0G reliable?
The price and inventory of 1.5KE350CA R0G 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 R0G is usually 5 days.
3.What payment methods are accepted for 1.5KE350CA R0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE350CA R0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE350CA R0G?
1.5KE350CA R0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE350CA R0G 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 R0G?
For technical support, including 1.5KE350CA R0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE350CA R0G requirements.
6.How does Aetrix verify that 1.5KE350CA R0G is sourced from the original manufacturer or authorized distributors?
All 1.5KE350CA R0G 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 R0G meets industry standards.
7.What is the process for return or replacement of 1.5KE350CA R0G?
All 1.5KE350CA R0G units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE350CA R0G, 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 R0G part is unused and in its original packaging.
Return procedure for 1.5KE350CA R0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE350CA R0G Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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