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Taiwan Semiconductor Corporation 1.5KE6.8CA
- Part No.:
- 1.5KE6.8CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE6.8CA.pdf
- Description:
- TVS 1500W 6.8V 5% BIDIR DO-201
- Quantity:
- Payment:
- Shipping:
Inventory:2,389
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Product details
Overview
1.5KE6.8CA from Taiwan Semiconductor is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with nominal breakdown voltage 6.8V, working stand-off voltage 5.5V, clamping voltage 10.8V at 145A peak pulse current, and fast response time <5.0ns - deployed for ESD and load-dump protection in automotive lighting and industrial control interfaces.
For engineers reviewing the 1.5KE6.8CA datasheet, 1.5KE6.8CA pinout, 1.5KE6.8CA application, or 1.5KE6.8CA equivalent, this page delivers verified electrical specs, polarity marking guidance, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance data, and direct alternative part comparisons for robust circuit hardening.
Technical Context
The 1.5KE6.8CA is a bipolar junction TVS diode designed for bidirectional surge suppression across both polarities without external polarity selection. Its silicon avalanche structure delivers stable clamping under 10/1000μs waveform transients up to 1500W, with VBR min/max of 6.12V–7.48V at 10mA test current and temperature coefficient of 0.057%/°C.
It operates over –55°C to +175°C junction temperature range, supports steady-state power dissipation of 5W at TL = 75°C on 16mm × 16mm copper pad, and meets AEC-Q101 qualification when ordered with "H" suffix - though 1.5KE6.8CA itself is the standard non-AEC variant with green compound molding and cathode-band-free marking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT = 10mA | 6.12V min / 7.48V max - defines precise avalanche onset threshold for reliable clamping initiation |
| VWM | 5.5V - maximum continuous reverse voltage before leakage exceeds 1000μA, ensuring safe operation below system rail |
| VC @ IPP = 145A | 10.8V - clamped voltage during full 1500W surge, limiting downstream IC stress to safe margin |
| PPK | 1500W - peak pulse power rating per 10/1000μs waveform, enabling single-event automotive load-dump survival |
| Response Time | <5.0ns - enables effective suppression of fast EFT bursts (IEC 61000-4-4) and ESD events (IEC 61000-4-2) |
| Junction Temp Range | –55°C to +175°C - supports under-hood and industrial ambient deployment without derating loss |
| Package | DO-201 - industry-standard axial-leaded package with 0.090g mass, UL 94V-0 molding, and J-STD-002 solderable tin plating |
Pinout & Package
DO-201 package: axial-leaded, non-polarized physical form for bidirectional operation; no anode/cathode marking required - device functions identically in either orientation. Leads are pure tin-plated, compliant with JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Surge return path (bidirectional) | Carries transient current in either polarity; symmetric conduction eliminates orientation dependency |
| Cathode (Lead 2) | Surge return path (bidirectional) | Electrically identical to Lead 1; no cathode band marking on 1.5KE6.8CA per bipolar specification |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| ISO 7637-2 compliance | Validated against Pulse 1 (inductive load dump), Pulse 2a/2b (battery disconnect), and Pulse 3a/3b (switching noise) |
| Low dynamic impedance | Ensures minimal voltage overshoot during high-di/dt surges, critical for protecting 3.3V/5V logic rails |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally constrained applications |
| 1000μA max IR @ VWM | Guarantees negligible standby current draw in always-on systems such as CAN bus nodes or sensor interfaces |
Applications
| Automotive Lighting Control | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting LED driver ICs and MOSFET gate drivers from load-dump spikes during headlamp switching in 12V vehicle systems. IC Role / Device Role / Timing Role: Bidirectional TVS placed across power rail and ground, clamping transients within 5ns before IC damage occurs. Use Value: Limits peak voltage to 10.8V during 1500W surge, preventing latch-up or oxide breakdown in 12V-rated drivers. |
Use Scenario: Safeguarding digital input modules from EFT bursts induced by relay coil switching in factory automation cabinets. IC Role / Device Role / Timing Role: Installed at connector entry point to shunt fast 5ns transients before reaching optocoupler or MCU GPIO pins. Use Value: Sub-5ns response ensures clamping activation prior to 10ns rise-time EFT pulses defined in IEC 61000-4-4 Level 4. |
| USB-C Power Delivery Interface | Smart Meter Communication Port |
Use Scenario: Shielding CC and VBUS lines in USB-C PD controllers from hot-plug ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed directly at port connector, minimizing trace inductance impact. Use Value: 10.8V clamping prevents VBUS overvoltage beyond USB PD spec limits while maintaining 5.5V working margin. |
Use Scenario: Hardening RS-485 transceivers in utility smart meters against lightning-induced surges on long outdoor communication lines. IC Role / Device Role / Timing Role: Primary front-end protection stage before secondary GDT or MOV, absorbing initial 10/1000μs energy. Use Value: 1500W rating handles multi-kA induced surges without degradation, extending field lifetime beyond 10 years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.8CA | Lower PPK (600W), smaller SMB package (surface-mount), lower clamping voltage (11.2V @ 53.3A) | Better suited for space-constrained PCBs but insufficient for ISO 7637-2 Pulse 1 (load dump) without parallel staging | Select when board area is critical and surge energy is limited to ≤600W; verify thermal relief for sustained 5W dissipation |
| 1.5SMC6.8CA | Same 1500W rating and DO-214AB package, slightly higher clamping (11.5V @ 130A), same VBR range | Surface-mount alternative with identical electrical performance but different mechanical mounting and thermal path | Choose for automated assembly compatibility; note 1.5SMC6.8CA requires larger pad thermal relief than DO-201 axial leads |
Compared with 1.5KE6.8CA, SMBJ6.8CA trades surge capacity for compactness - making it viable only in low-energy ESD-only roles - while 1.5SMC6.8CA matches power handling but shifts thermal management responsibility to PCB copper, demanding careful layout validation.
Availability
1.5KE6.8CA is available at Aetrix Electronics and suitable for automotive lighting control, industrial PLC I/O protection, USB-C power delivery interface hardening, and smart meter communication port surge resilience requiring stable component supply across extended production cycles.
Supply support for 1.5KE6.8CA 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 power management, protection, and signal conditioning devices since 1979.
The 1.5KE series was engineered specifically for high-energy transient suppression in automotive and industrial environments, emphasizing rugged DO-201 packaging, AEC-Q101 qualification readiness, and ISO 7637-2 compliance out-of-the-box.
FAQ
What is the polarity configuration of the 1.5KE6.8CA?
The 1.5KE6.8CA is a bidirectional TVS diode with symmetrical avalanche characteristics in both directions - it has no cathode band marking and functions identically regardless of lead orientation. This eliminates installation errors in AC-coupled or floating circuits and simplifies layout for differential bus protection like RS-485 or CAN FD.
Does the 1.5KE6.8CA meet automotive qualification standards?
The base 1.5KE6.8CA is not AEC-Q101 qualified; however, the AEC-Q101 variant is designated as 1.5KE6.8CAH (with "H" suffix). The 1.5KE6.8CA shares identical electrical specs and DO-201 packaging but lacks the extended reliability testing required for under-hood automotive use - confirm ordering code before deployment in automotive safety-critical systems.
What is the maximum clamping voltage of the 1.5KE6.8CA during a 1500W surge?
The 1.5KE6.8CA clamps to a maximum of 10.8V when subjected to its rated 145A peak pulse current (10/1000μs waveform), corresponding to 1500W surge power. This value is guaranteed across –55°C to +125°C ambient and is measured per JEDEC test conditions with specified lead length and thermal mounting.
How does the 1.5KE6.8CA compare to unidirectional TVS diodes like 1.5KE6.8A?
The 1.5KE6.8CA provides bidirectional protection with identical VBR (6.12–7.48V) and VC (10.8V) as the unidirectional 1.5KE6.8A, but differs in construction: 1.5KE6.8A includes a cathode band and must be oriented correctly, whereas 1.5KE6.8CA omits the band and protects both polarities inherently - ideal for AC signal lines or systems where polarity reversal is possible.
Can the 1.5KE6.8CA be used in place of a Zener diode for voltage regulation?
No - the 1.5KE6.8CA is optimized for transient suppression, not DC regulation. Its VBR tolerance (±10%) and high dynamic impedance above 1mA make it unsuitable for precision reference or steady-state voltage control. For regulation, use dedicated Zener diodes like BZX84-C6V8 with tighter tolerance and lower Zzt; the 1.5KE6.8CA should only be applied in surge-clamp roles.
1.5KE6.8CA 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):
- 5.8V
- Voltage - Breakdown (Min):
- 6.45V
- Voltage - Clamping (Max) @ Ipp:
- 10.5V
- Current - Peak Pulse (10/1000µs):
- 150A
- 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
1.5KE6.8CA FAQ
1.How can I place an order for 1.5KE6.8CA through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE6.8CA 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 1.5KE6.8CA reliable?
The price and inventory of 1.5KE6.8CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE6.8CA is usually 5 days.
3.What payment methods are accepted for 1.5KE6.8CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE6.8CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE6.8CA?
1.5KE6.8CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE6.8CA 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 1.5KE6.8CA?
For technical support, including 1.5KE6.8CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE6.8CA requirements.
6.How does Aetrix verify that 1.5KE6.8CA is sourced from the original manufacturer or authorized distributors?
All 1.5KE6.8CA 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 1.5KE6.8CA meets industry standards.
7.What is the process for return or replacement of 1.5KE6.8CA?
All 1.5KE6.8CA units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE6.8CA, 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 1.5KE6.8CA part is unused and in its original packaging.
Return procedure for 1.5KE6.8CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE6.8CA Tags
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