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Taiwan Semiconductor Corporation 1.5KE300CA
- Part No.:
- 1.5KE300CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE300CA.pdf
- Description:
- TVS 1500W 300V 5% BIDIR DO-201
- Quantity:
- Payment:
- Shipping:
Inventory:4,986
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Product details
Overview
1.5KE300CA 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 waveform, with 414V maximum clamping voltage at 3.8A peak impulse current and 256V working stand-off voltage - deployed for automotive ECU input protection against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the 1.5KE300CA datasheet, 1.5KE300CA pinout, 1.5KE300CA application, or 1.5KE300CA equivalent, this page delivers verified electrical parameters, bidirectional clamping behavior, AEC-Q101 qualification status, thermal derating curves, and direct alternative part comparisons for robust overvoltage protection design-in.
Technical Context
The 1.5KE300CA operates as a bidirectional avalanche diode, symmetrically clamping voltage transients in both polarities with breakdown voltage VBR = 285–315V at 1mA test current and clamping voltage VC = 414V at IPP = 3.8A. Its low dynamic impedance ensures rapid energy diversion during fast-rising EFT or load-dump events.
Designed to meet ISO 7637-2 immunity requirements, it sustains junction temperatures from –55°C to +175°C and exhibits a temperature coefficient of VBR ≤ 0.110%/°C. The device uses pure tin-plated leads compliant with J-STD-002 and passes JESD 201 Class 2 whisker testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 256 V - Maximum continuous reverse operating voltage before leakage exceeds 1µA; defines safe DC bias margin for circuit operation. |
| VBR (min/max) | 285 / 315 V at 1mA - Confirmed bidirectional breakdown range; ensures reliable turn-on across manufacturing lot and temperature variation. |
| VC @ IPP | 414 V at 3.8A - Clamped voltage under 10/1000μs surge; determines protected IC's maximum stress level during worst-case transient. |
| PPK | 1500 W - Peak pulse power handling per single non-repetitive event; enables protection against high-energy automotive load dump. |
| IPP | 3.8 A - Peak impulse current at VC; used with PCB trace inductance to calculate actual clamping overshoot in real layout. |
| TJMAX | +175°C - Maximum junction temperature; supports placement near heat-generating components without derating penalty beyond ambient curve. |
| Package | DO-201 - Axial-leaded, UL 94V-0 molded case; requires 0.6" × 0.6" copper pad for full 5W steady-state dissipation at TL = 75°C. |
Pinout & Package
DO-201 package: axial-leaded, polarity indicated by cathode band (not applicable for bidirectional 1.5KE300CA; terminals are symmetrical).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction | Either terminal serves as anode or cathode depending on transient polarity; no orientation required during PCB placement. |
| Lead 1 / Lead 2 | Current path for surge conduction | Leads carry full 3.8A peak impulse; require minimum 0.020" trace width and thermal relief for solder joint reliability. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive under-hood applications including engine control modules and body electronics. |
| ISO 7637-2 compliance | Meets Pulse 1 (inductive load disconnect), Pulse 2a/2b (battery line transients), and Pulse 3a/3b (switching noise) immunity requirements. |
| Fast response time | <5.0 ns turn-on for bidirectional transients - limits voltage overshoot before clamping engages. |
| Low leakage current | <1 µA at 256 V - minimizes standby power loss in always-on automotive circuits. |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally constrained designs. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: 12V/24V battery rail in engine control unit exposed to load dump (up to 60V) and alternator switching spikes. IC Role / Device Role / Timing Role: Bidirectional TVS placed upstream of LDO regulators and CAN transceivers to clamp transients before they reach sensitive logic. Use Value: Limits rail voltage to ≤414V during 1500W surges, preventing latch-up or gate oxide rupture in downstream 3.3V/5V ICs. |
Use Scenario: 4–20mA current loop interface in factory automation PLC I/O module subjected to EFT bursts per IEC 61000-4-4. IC Role / Device Role / Timing Role: TVS shunts fast 5ns rise-time transients across analog front-end op-amps and ADC inputs. Use Value: Maintains signal integrity by clamping induced voltages within ±414V window, avoiding saturation or damage to precision instrumentation amplifiers. |
| LED Lighting Driver Input Stage | Telecom Power Feeding Protection |
|
Use Scenario: AC/DC primary-side input of outdoor LED streetlight driver experiencing lightning-induced surges on mains lines. IC Role / Device Role / Timing Role: First-line protection before bridge rectifier and PFC controller, absorbing energy prior to bulk capacitor charging. Use Value: Withstands 1500W pulses without degradation, extending system MTBF by eliminating recurrent MOV wear-out failure modes. |
Use Scenario: -48V DC feed line in telecom base station remote radio head (RRH) exposed to induced surges from nearby lightning strikes. IC Role / Device Role / Timing Role: Bidirectional clamping across power pair to protect PoE-like DC feeding circuitry and RF front-end bias networks. Use Value: Symmetric 285–315V VBR ensures equal protection for positive and negative polarity surges common in telecom infrastructure grounding schemes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ300CA | Same 300V VWM, but SMC package (smaller footprint); 600W rating vs. 1500W - lower surge capacity. | Preferred for space-constrained consumer electronics; insufficient for automotive load dump per ISO 7637-2. | Select SMBJ300CA only when board area is critical and surge energy remains below 600W. |
| 1.5SMC300CA | Identical electrical specs and AEC-Q101 qualification; SMC package with same 1500W rating but different thermal profile (requires larger copper area for 5W dissipation). | Used where automated SMT placement is mandatory; not suitable for through-hole legacy designs or high-vibration mechanical retention. | Choose 1.5SMC300CA for new SMT-based automotive platforms requiring same performance in surface-mount form factor. |
Compared with SMBJ300CA and 1.5SMC300CA, the 1.5KE300CA provides identical clamping performance and AEC-Q101 validation but in a rugged DO-201 axial package optimized for manual assembly, high-vibration environments, and through-hole mechanical retention - making it the preferred choice for legacy automotive harness interfaces and industrial field-wiring terminals.
Availability
1.5KE300CA is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, and LED driver input stage surge suppression requiring stable component supply across multi-year production cycles.
Supply support for 1.5KE300CA 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 for automotive, industrial, and computing markets.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh automotive environments, emphasizing AEC-Q101 reliability, ISO 7637-2 compliance, and robust DO-201 packaging for under-hood deployment.
FAQ
What is the clamping voltage of the 1.5KE300CA under a 10/1000μs surge?
The 1.5KE300CA clamps to a maximum of 414 V at 3.8 A peak impulse current under the standardized 10/1000μs double-exponential waveform. This value is measured per JEDEC standards and confirmed in the manufacturer's electrical specifications table for the 1.5KE300CA device. It represents the upper voltage limit imposed on protected circuitry during worst-case surge conditions.
Is the 1.5KE300CA unidirectional or bidirectional?
The 1.5KE300CA is a bidirectional TVS diode, as indicated by the "CA" suffix per the 1.5KE series naming convention. Its breakdown and clamping characteristics apply identically in both polarities, enabling symmetrical protection without regard to signal or power rail polarity - a key requirement for AC-coupled or floating-bus applications like CAN or RS-485 interfaces.
Does the 1.5KE300CA meet AEC-Q101 qualification?
Yes, the 1.5KE300CA is explicitly listed as AEC-Q101 qualified in the official Taiwan Semiconductor documentation. This qualification covers stress tests including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing - confirming suitability for automotive powertrain and chassis applications where reliability under thermal and mechanical stress is critical.
What is the working stand-off voltage (VWM) of the 1.5KE300CA?
The working stand-off voltage VWM of the 1.5KE300CA is 256 V. This is the maximum DC or continuous peak voltage the device can withstand without entering avalanche conduction, while maintaining leakage current below 1 µA. It establishes the safe operating margin between normal system voltage and transient clamping threshold.
How does the 1.5KE300CA compare to the 1.5KE300A in terms of electrical performance?
The 1.5KE300CA differs from the 1.5KE300A solely in polarity configuration: the "CA" denotes bidirectional operation, whereas "A" indicates unidirectional. Their VBR, VC, PPK, and thermal ratings are identical. However, the 1.5KE300CA must be used where transient polarity is unpredictable - such as across differential buses or AC inputs - while the 1.5KE300A suits DC rails with defined ground reference.
1.5KE300CA 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):
- 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 FAQ
1.How can I place an order for 1.5KE300CA through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE300CA 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 reliable?
The price and inventory of 1.5KE300CA 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 is usually 5 days.
3.What payment methods are accepted for 1.5KE300CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE300CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE300CA?
1.5KE300CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE300CA 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?
For technical support, including 1.5KE300CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE300CA requirements.
6.How does Aetrix verify that 1.5KE300CA is sourced from the original manufacturer or authorized distributors?
All 1.5KE300CA 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 meets industry standards.
7.What is the process for return or replacement of 1.5KE300CA?
All 1.5KE300CA units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE300CA, 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 part is unused and in its original packaging.
Return procedure for 1.5KE300CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE300CA Tags
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