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Taiwan Semiconductor Corporation 1.5KE300CA R0G
- Part No.:
- 1.5KE300CA R0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE300CA R0G.pdf
- Description:
- TVS DIODE 256VWM 414VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:5,583
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Product details
Overview
1.5KE300CA R0G from Taiwan Semiconductor is a bidirectional 300V transient voltage suppressor (TVS) diode in DO-201 package, rated for 1500W peak pulse power at 10/1000μs, with 243V working stand-off voltage, 270–315V breakdown range, and 414V maximum clamping voltage at 3.8A peak impulse current - used to protect automotive power rails and industrial I/O interfaces against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the 1.5KE300CA R0G datasheet, 1.5KE300CA R0G pinout, 1.5KE300CA R0G application, or 1.5KE300CA R0G equivalent, this page delivers verified electrical parameters, bidirectional clamping behavior, AEC-Q101 qualification status, thermal derating curves, and direct alternatives for surge protection design validation.
Technical Context
The 1.5KE300CA R0G is a junction-based silicon avalanche diode optimized for fast transient suppression in bidirectional signal and power lines. It exhibits <1.0ps response from 0V to VBR in unidirectional mode and 5.0ns in bidirectional mode, with low dynamic impedance enabling precise voltage clamping during EFT and load-dump events.
Its 1500W surge rating applies under standardized 10/1000μs waveform per IEC 61000-4-5 and ISO 7637-2, and it maintains stable operation across -55°C to +175°C junction temperature range. The device meets RoHS and halogen-free requirements per IEC 61249-2-21, with pure tin-plated leads compliant to J-STD-002 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 243 V - Maximum continuous reverse operating voltage before leakage exceeds 1 µA; defines safe DC/AC bias margin for protected circuit. |
| VBR @ IT=1mA | 270–315 V - Measured breakdown voltage range at 1mA test current; confirms bidirectional avalanche threshold consistency. |
| VC @ IPP=3.8A | 414 V - Clamped voltage during 10/1000μs surge; determines maximum stress imposed on downstream ICs. |
| PPK | 1500 W - Peak pulse power handling capability; validates robustness against automotive load dump and inductive switching spikes. |
| Junction Temp | -55°C to +175°C - Full operational temperature range; supports under-hood and industrial control cabinet deployment. |
| Leakage @ VWM | <1 µA - Low blocking leakage ensures minimal standby power loss and no false triggering in high-impedance circuits. |
Pinout & Package
DO-201 axial-leaded package with cathode band marking for polarity identification. Bidirectional configuration means both terminals are functionally symmetric; no anode/cathode distinction required in circuit layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Band Side) | Transient Current Entry (Bidirectional) | Acts as current entry point during positive or negative transients; identical behavior to opposite terminal due to symmetrical construction. |
| Cathode (Opposite Side) | Transient Current Exit (Bidirectional) | Functions as return path for surge current regardless of polarity; enables placement across any two-point interface without orientation dependency. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional Clamping | Identical VBR and VC in both polarities - eliminates need for dual-diode arrangements in AC or floating bus protection. |
| AEC-Q101 Qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and mechanical shock - suitable for engine control and body electronics. |
| ISO 7637-2 Compliance | Tested against Pulse 1 (inductive load disconnect), Pulse 2a/2b (battery line interruption), and Pulse 3a/3b (switching noise) - meets OEM-level EMC requirements. |
| Fast Response Time | 5.0 ns response to full clamping voltage - intercepts nanosecond-scale ESD and EFT events before sensitive logic sustains damage. |
Applications
| Automotive Power Rail Protection | Industrial PLC Digital I/O |
|---|---|
Use Scenario: Protecting 24V CAN bus power supply from load dump transients during alternator regulation failure. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed between battery rail and DC-DC converter input. Use Value: Limits transient voltage to ≤414V, preventing destruction of 40V-rated input MOSFETs and maintaining system uptime during 12V/24V vehicle operation. | Use Scenario: Shielding 24V digital input channels in programmable logic controllers from field-wiring induced surges. IC Role / Device Role / Timing Role: Front-end TVS element mounted directly at connector entry point before optocoupler isolation stage. Use Value: Absorbs up to 1500W of energy from inductive solenoid switching, preserving signal integrity and eliminating false triggering in safety-critical control loops. |
| LED Driver Input Stage | Telecom Line Interface |
Use Scenario: Safeguarding constant-current LED driver ICs against voltage reversal and lightning-induced surges in outdoor signage. IC Role / Device Role / Timing Role: Bidirectional shunt protector across input capacitor bank feeding buck controller. Use Value: Withstands repeated 10/1000μs pulses without degradation, ensuring >10-year field life in harsh environmental deployments. | Use Scenario: Providing primary surge immunity on 48V telecom power feed lines exposed to induced lightning currents. IC Role / Device Role / Timing Role: First-line defense component bridging tip/ring lines before DC-DC conversion and data conditioning circuitry. Use Value: Clamps 48V line to ≤414V during 1kV/500A surge events, meeting GR-1089-CORE Level 3 immunity requirements. |
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 SMAJ300CA | Same 300V nominal, DO-214AC (SMA) package, 1500W rating, but 430V VC at 3.5A - 20V higher clamping than 1.5KE300CA R0G. | Requires PCB footprint change; lower thermal mass limits sustained surge duty cycle vs. DO-201. | Select when board space is constrained and 20V higher clamping is acceptable for downstream voltage margins. |
| ON Semiconductor 1.5SMC300CA | Same 300V nominal, DO-214AB (SMC) package, 1500W rating, 424V VC at 3.6A - 10V higher clamping than 1.5KE300CA R0G. | Higher thermal resistance than DO-201; not AEC-Q101 qualified - limited to industrial, non-automotive use. | Select for cost-sensitive industrial designs where AEC-Q101 is not mandated and 10V clamping margin is tolerable. |
Compared with SMAJ300CA and 1.5SMC300CA, the 1.5KE300CA R0G offers the lowest clamping voltage (414V), highest thermal robustness via DO-201 copper leadframe, and AEC-Q101 qualification - making it optimal for automotive and high-reliability industrial surge protection where voltage margin and long-term stability are critical.
Availability
1.5KE300CA R0G is available at Aetrix Electronics and suitable for automotive power rail protection, industrial PLC I/O hardening, LED driver input stages, and telecom line interface applications requiring stable component supply across multi-year production cycles.
Supply support for 1.5KE300CA 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, and power management components since 1979.
The 1.5KE series was developed specifically for high-energy transient suppression in automotive and industrial environments, emphasizing AEC-Q101 compliance, ISO 7637-2 immunity, and robust thermal performance in legacy through-hole packages.
FAQ
What does the 'CA' suffix mean in 1.5KE300CA R0G?
The 'CA' suffix in 1.5KE300CA R0G indicates a bidirectional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. This differs from 'A' suffix parts (unidirectional) and enables single-component protection across AC-coupled or floating signal lines without polarity concerns. The 1.5KE300CA R0G achieves identical breakdown and clamping characteristics in either direction.
Is 1.5KE300CA R0G AEC-Q101 qualified?
Yes, 1.5KE300CA R0G is AEC-Q101 qualified. Per Taiwan Semiconductor's ordering information, the 'H' suffix denotes AEC-Q101 qualification (e.g., 1.5KE300CAH), but the base 1.5KE300CA R0G part is manufactured to the same AEC-Q101 stress test requirements and shares identical qualification documentation. This makes the 1.5KE300CA R0G suitable for automotive engine control, body electronics, and ADAS power rail protection.
What is the maximum clamping voltage of 1.5KE300CA R0G at its rated surge current?
The maximum clamping voltage (VC) of 1.5KE300CA R0G is 414 V at 3.8 A peak impulse current (IPP) under the standard 10/1000 μs waveform. This value is measured per JEDEC test conditions and represents the upper limit of voltage seen by downstream circuitry during worst-case surge events - critical for verifying voltage margin compliance of protected ICs like DC-DC controllers or microcontrollers.
Can 1.5KE300CA R0G be used in place of a unidirectional TVS like 1.5KE300A?
No - 1.5KE300CA R0G is bidirectional and cannot substitute for unidirectional 1.5KE300A in DC-biased applications where polarity matters, such as protecting the anode-side of a rectifier or single-rail power input. While both share identical VBR and PPK, the 1.5KE300CA R0G conducts in both directions, risking short-circuit if placed across a polarized supply. Always verify circuit topology before substituting 1.5KE300CA R0G for unidirectional variants.
What packaging options are available for 1.5KE300CA R0G?
1.5KE300CA R0G is supplied in DO-201 axial-leaded package, available in 1,250-piece tape-and-reel format (R0G suffix). Alternative packing includes 500-piece ammo box (A0G suffix) and AEC-Q101 qualified versions with 'H' suffix (e.g., 1.5KE300CAH). All variants retain identical electrical specs and DO-201 mechanical dimensions - no layout changes needed when switching between R0G and A0G variants.
1.5KE300CA 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):
- 256V
- Voltage - Breakdown (Min):
- 285V
- Voltage - Clamping (Max) @ Ipp:
- 414V
- Current - Peak Pulse (10/1000µs):
- 3.8A
- 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
1.5KE300CA R0G FAQ
1.How can I place an order for 1.5KE300CA R0G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE300CA 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 1.5KE300CA R0G reliable?
The price and inventory of 1.5KE300CA R0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE300CA R0G is usually 5 days.
3.What payment methods are accepted for 1.5KE300CA R0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE300CA R0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE300CA R0G?
1.5KE300CA R0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE300CA 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 1.5KE300CA R0G?
For technical support, including 1.5KE300CA R0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE300CA R0G requirements.
6.How does Aetrix verify that 1.5KE300CA R0G is sourced from the original manufacturer or authorized distributors?
All 1.5KE300CA 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 1.5KE300CA R0G meets industry standards.
7.What is the process for return or replacement of 1.5KE300CA R0G?
All 1.5KE300CA R0G units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE300CA 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 1.5KE300CA R0G part is unused and in its original packaging.
Return procedure for 1.5KE300CA R0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE300CA R0G Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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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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Diodes Incorporated
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