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Taiwan Semiconductor Corporation 1.5KE6.8CA B0G
- Part No.:
- 1.5KE6.8CA B0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE6.8CA B0G.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:8,133
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Product details
Overview
1.5KE6.8CA B0G from Taiwan Semiconductor is a bidirectional 1500W transient voltage suppressor (TVS) diode designed for high-energy surge protection in automotive and industrial power rails. It features a nominal breakdown voltage of 6.8V, clamping voltage of 10.8V at 145A peak pulse current, working stand-off voltage of 5.5V, and operates across –55°C to +175°C junction temperature range. It is used to protect CAN transceivers, microcontroller I/O, and DC-DC converter inputs against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the 1.5KE6.8CA B0G datasheet, 1.5KE6.8CA B0G pinout, 1.5KE6.8CA B0G application, or 1.5KE6.8CA B0G equivalent, key selection criteria include bidirectional clamping capability, DO-201 package thermal performance, low dynamic impedance (<1Ω), sub-5ns response time, and AEC-Q101 qualification status - all critical for robust ESD and load-dump immunity in automotive ECUs.
Technical Context
This bidirectional TVS diode operates symmetrically in both polarities, with identical electrical characteristics forward and reverse. Its 10.8V clamping voltage at 145A (10/1000μs waveform) ensures reliable overvoltage limiting during fast transients, while its <1μA leakage at 5.5V minimizes standby power loss in always-on circuits.
The device uses a planar junction structure in a DO-201 axial package with pure tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance. Thermal derating follows a defined curve up to 175°C maximum junction temperature, supporting operation in under-hood environments without external heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.12V / 7.48V @ 10mA - defines precise conduction onset window for repeatable clamping threshold |
| VWM | 5.5V - maximum continuous operating voltage before leakage exceeds 1000μA; sets safe margin below system rail |
| VC @ IPP | 10.8V @ 145A - peak clamped voltage during 10/1000μs surge; determines protected circuit's maximum stress level |
| PPK | 1500W - single-pulse surge handling capacity per JEDEC standard; enables protection against severe load dump events |
| TJ max | +175°C - extended junction temperature rating supports placement near hot components in automotive modules |
| Response time | <5.0ns - time from 0V to VBR under bidirectional surge; ensures protection before sensitive ICs experience overstress |
| Package | DO-201 - industry-standard axial leaded package with 0.090g mass and UL 94V-0 molding compound |
Pinout & Package
DO-201 package: axial-leaded, cylindrical epoxy-molded body with cathode band marking for unidirectional variants; for bidirectional 1.5KE6.8CA B0G, polarity is non-directional - both leads are electrically symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional surge path | Either terminal serves as input/output; no polarity dependency - simplifies PCB layout and eliminates orientation errors |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| ISO 7637-2 compliance | Meets Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) requirements |
| Low dynamic impedance | <1Ω typical - minimizes voltage overshoot during high di/dt surges, improving clamping precision |
| Halogen-free construction | Complies with IEC 61249-2-21 - supports RoHS-compliant manufacturing and end-of-life recycling |
| Fast response time | <5.0ns - ensures clamping activation prior to damage threshold of modern 3.3V/5V logic interfaces |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
Use Scenario: Protects 12V supply rail and LIN bus interface from battery load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional TVS placed at connector entry point to clamp ±100V transients within 5ns. Use Value: Prevents latch-up or gate oxide rupture in MCU and LIN transceiver by limiting clamped voltage to 10.8V. | Use Scenario: Shields 24V digital input optocoupler front-end from field-wiring induced surges and EFT bursts. IC Role / Device Role / Timing Role: Primary surge limiter on dry-contact input line, rated for repeated 1500W pulses. Use Value: Enables >100,000-cycle surge endurance without parameter drift, verified per IEC 61000-4-4 Level 4. |
| Automotive Infotainment Power Supply | LED Driver Board Input Stage |
Use Scenario: Guards buck converter input stage against ISO 7637-2 Pulse 1 (–150V) and Pulse 2b (+100V) events. IC Role / Device Role / Timing Role: First-line transient suppressor upstream of input capacitor and controller IC. Use Value: Maintains VIN below 12V during 10/1000μs transients, preventing controller shutdown or reset. | Use Scenario: Safeguards constant-current LED driver IC from inductive kickback when AC mains switch opens. IC Role / Device Role / Timing Role: Bidirectional clamp across bridge rectifier output to absorb stored energy. Use Value: Limits voltage spike to ≤10.8V, avoiding overvoltage failure of driver MOSFETs and sense resistors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.8CA | Lower peak power (600W), smaller SMB package, higher thermal resistance (RθJA ≈ 110°C/W vs. DO-201's ~60°C/W) | Preferred for space-constrained consumer boards; unsuitable for automotive load dump per ISO 7637-2 Pulse 1 | Select only if surge energy is ≤600W and ambient temperature remains <85°C |
| 1.5SMC6.8CA | Same 1500W rating but SMC package; slightly higher VC (11.2V) and lower IPP (135A) at same waveform | Surface-mount alternative for automated assembly; requires PCB copper area for thermal management | Choose when DO-201 axial leads are incompatible with layout or assembly process |
Compared with SMBJ6.8CA and 1.5SMC6.8CA, the 1.5KE6.8CA B0G delivers superior thermal robustness in high-ambient environments and meets full ISO 7637-2 Pulse 1 compliance - making it the only option among the three qualified for under-hood automotive use without derating.
Availability
1.5KE6.8CA B0G is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controllers, and LED lighting systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 1.5KE6.8CA B0G 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.
The 1.5KE series was engineered specifically for high-reliability transient suppression in harsh automotive and industrial environments, emphasizing AEC-Q101 qualification, ISO 7637-2 compliance, and extended temperature operation.
FAQ
What does the "CA" suffix indicate in 1.5KE6.8CA B0G?
The "CA" suffix in 1.5KE6.8CA B0G denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression in both polarities. Unlike unidirectional "A" or base "1.5KE6.8" variants, the CA version has identical breakdown and clamping behavior regardless of voltage polarity, making it ideal for AC-coupled or floating signal lines where polarity reversal may occur. This is confirmed in the datasheet's "Devices for Bipolar Applications" section.
Is 1.5KE6.8CA B0G AEC-Q101 qualified?
Yes, 1.5KE6.8CA B0G is AEC-Q101 qualified. The "B0G" suffix indicates green (halogen-free) packaging and AEC-Q101 compliance, as explicitly stated in the "FEATURES" list and "ORDERING INFORMATION" section of the Taiwan Semiconductor datasheet. This qualification covers stress tests including HTGB, HTRB, TCT, and ESD, validating suitability for automotive powertrain and body electronics.
What is the clamping voltage of 1.5KE6.8CA B0G at its rated peak pulse current?
The clamping voltage (VC) of 1.5KE6.8CA B0G is 10.8V at 145A peak pulse current (IPP) under the standard 10/1000μs waveform. This value is specified in the Electrical Specifications table on page 2 of the datasheet and represents the maximum voltage seen across the device during a full-rated surge event - a critical parameter for ensuring downstream ICs remain within absolute maximum ratings.
Can 1.5KE6.8CA B0G be used in place of a unidirectional TVS like 1.5KE6.8A?
No - 1.5KE6.8CA B0G is not a drop-in replacement for unidirectional types such as 1.5KE6.8A. While both share the same VBR and PPK, the CA variant lacks polarity marking and conducts in both directions, which may cause unintended current paths in DC-biased circuits. Unidirectional devices require correct cathode orientation; substituting with 1.5KE6.8CA B0G risks shorting or improper clamping in circuits relying on DC blocking.
What is the maximum working stand-off voltage (VWM) for 1.5KE6.8CA B0G?
The maximum working stand-off voltage (VWM) for 1.5KE6.8CA B0G is 5.5V, as specified in the Electrical Specifications table. This is the highest continuous DC or RMS voltage the device can withstand without exceeding 1000μA leakage current. Designers must ensure system operating voltage remains below this value to prevent premature conduction and excessive power dissipation during normal operation.
1.5KE6.8CA B0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- 1.5KE
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- 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 B0G FAQ
1.How can I place an order for 1.5KE6.8CA B0G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE6.8CA B0G 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 B0G reliable?
The price and inventory of 1.5KE6.8CA B0G 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 B0G is usually 5 days.
3.What payment methods are accepted for 1.5KE6.8CA B0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE6.8CA B0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE6.8CA B0G?
1.5KE6.8CA B0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE6.8CA B0G 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 B0G?
For technical support, including 1.5KE6.8CA B0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE6.8CA B0G requirements.
6.How does Aetrix verify that 1.5KE6.8CA B0G is sourced from the original manufacturer or authorized distributors?
All 1.5KE6.8CA B0G 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 B0G meets industry standards.
7.What is the process for return or replacement of 1.5KE6.8CA B0G?
All 1.5KE6.8CA B0G units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE6.8CA B0G, 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 B0G part is unused and in its original packaging.
Return procedure for 1.5KE6.8CA B0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE6.8CA B0G 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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