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Taiwan Semiconductor Corporation 1.5KE68CA B0G
- Part No.:
- 1.5KE68CA B0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE68CA B0G.pdf
- Description:
- TVS DIODE 58.1VWM 92VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:4,330
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Product details
Overview
1.5KE68CA B0G from Taiwan Semiconductor is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with nominal breakdown voltage 68 V, clamping voltage 98 V at 16 A peak impulse current, and working stand-off voltage 55.1 V. It protects automotive and industrial power rails against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the 1.5KE68CA B0G datasheet, 1.5KE68CA B0G pinout, 1.5KE68CA B0G application, or 1.5KE68CA B0G equivalent, this page delivers verified electrical parameters, polarity marking, thermal derating behavior, clamping performance under 10/1000 µs surge, and AEC-Q101-compliant variants for automotive-grade ESD and load-dump protection.
Technical Context
This bidirectional TVS diode operates symmetrically in both polarities, with breakdown voltage VBR = 61.2–74.8 V at 1 mA test current and maximum clamping voltage VC = 98 V at IPP = 16 A (10/1000 µs). Its low dynamic impedance ensures rapid voltage limiting during fast transients.
Junction temperature range is –55 °C to +175 °C, and it meets UL 94V-0 flammability rating with pure tin-plated leads compliant to J-STD-002 solderability. Polarity is marked by cathode band - absent on bidirectional types like 1.5KE68CA B0G, confirming symmetrical terminal function.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 61.2 V / 74.8 V at 1 mA - defines reliable conduction onset window for overvoltage detection |
| VWM | 55.1 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPP | 98 V at 16 A (10/1000 µs) - peak clamped voltage seen by protected circuit during worst-case surge |
| PPK | 1500 W - peak pulse power handling capability under standardized surge waveform |
| TJ max | +175 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| Leakage ID @ VWM | <1 µA - negligible standby current draw, critical for low-power system monitoring circuits |
| Response time | <5.0 ns - enables suppression of fast EFT bursts before sensitive ICs experience latch-up |
Pinout & Package
Package: DO-201 axial leaded case with molded epoxy body, UL 94V-0 rated, 0.090 g mass. Leads are pure tin plated per J-STD-002; polarity marking omitted for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional surge path | Either terminal serves as anode or cathode depending on transient polarity - no orientation required during PCB placement |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified variant available | Validated for automotive electronics requiring reliability under temperature cycling, vibration, and humidity stress |
| ISO 7637-2 compliance (Pulse 1/2a/2b/3a/3b) | Guarantees robustness against real-world vehicle electrical disturbances including load dump and inductive switching |
| 1500 W peak pulse power (10/1000 µs) | Supports high-energy transient suppression without thermal runaway in 12 V/24 V systems |
| Clamping ratio VC/VBR ≈ 1.52 | Indicates efficient voltage limiting margin - lower ratio improves protected IC survival probability |
| Halogen-free per IEC 61249-2-21 | Meets RoHS and environmental compliance requirements for global automotive and industrial shipments |
Applications
| Automotive Power Rail Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: 12 V battery line in engine control unit exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional TVS clamps positive and negative transients faster than fuse response time, preserving MCU and CAN transceiver integrity. Use Value: Withstands 1500 W surges while limiting voltage to ≤98 V - preventing damage to 3.3 V/5 V logic interfaces downstream. |
Use Scenario: Digital input module receiving 24 V DC signals from field sensors in factory automation. IC Role / Device Role / Timing Role: Front-end transient suppressor placed before optocoupler or level-shifter input stage. Use Value: Sub-5 ns response captures EFT bursts (IEC 61000-4-4) before propagation into isolation barrier, reducing false triggering. |
| LED Driver Overvoltage Protection | Telecom Line Interface Protection |
Use Scenario: Constant-current LED driver board powered from unregulated 48 V supply in street lighting. IC Role / Device Role / Timing Role: Parallel-connected TVS across output terminals to absorb inductive kickback from relay switching. Use Value: Clamping at 98 V prevents MOSFET drain-source avalanche failure and maintains LED string continuity during surge events. |
Use Scenario: RS-485 transceiver interface connected to long outdoor cabling susceptible to lightning-induced surges. IC Role / Device Role / Timing Role: Primary protection device between cable connector and transceiver's differential bus pins. Use Value: Symmetrical clamping ensures equal protection on A/B lines without polarity dependency - essential for half-duplex differential signaling. |
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 SMAJ68CA | DO-214AC (SMA) package, 600 W rating, VC = 110 V @ 10.3 A | Lower power handling and higher clamping voltage - suitable only for less severe surge environments | Select when board space constraints favor surface-mount and surge energy is limited to ≤600 W |
| ON Semiconductor 1.5SMC68CA | DO-214AB (SMC) package, 1500 W rating, VC = 112 V @ 13.4 A | Higher clamping voltage reduces margin for 5 V/3.3 V downstream ICs; same power rating but larger footprint | Prefer when existing layout uses SMC footprint and thermal management supports higher VC-induced power dissipation |
Compared with 1.5KE68CA B0G, SMAJ68CA offers smaller size but sacrifices 40% surge power and increases clamping voltage by 12 V; 1.5SMC68CA matches power rating but raises clamping voltage by 14 V and requires larger PCB area - making 1.5KE68CA B0G optimal for cost-sensitive, high-energy, through-hole automotive designs.
Availability
1.5KE68CA B0G is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLC I/O modules, LED driver boards, and telecom line interfaces requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for 1.5KE68CA 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, serving automotive, industrial, and consumer markets since 1979.
The 1.5KE series was designed specifically for high-reliability transient suppression in harsh environments - emphasizing AEC-Q101 qualification, ISO 7637-2 compliance, and robust DO-201 packaging for under-hood and factory-floor deployment.
FAQ
What does the 'CA' suffix indicate in 1.5KE68CA B0G?
The 'CA' suffix in 1.5KE68CA B0G denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional 'C' variants, 1.5KE68CA B0G has no polarity marking and functions identically regardless of terminal orientation, making it ideal for AC-coupled or differential signal lines where polarity reversal may occur.
Is 1.5KE68CA B0G AEC-Q101 qualified?
1.5KE68CA B0G itself is not AEC-Q101 qualified; however, the TSC 1.5KE68CAH variant (with 'H' suffix) is fully AEC-Q101 certified. The 'B0G' suffix indicates green compound and tape-and-reel packaging (1250 pcs), not qualification status. For automotive applications requiring formal qualification, specify 1.5KE68CAH instead of 1.5KE68CA B0G.
What is the maximum clamping voltage of 1.5KE68CA B0G at rated surge current?
The maximum clamping voltage of 1.5KE68CA B0G is 98 V at 16 A peak impulse current under the standard 10/1000 µs double-exponential waveform. This value is measured across the device terminals during surge testing and represents the highest voltage imposed on the protected circuit - a critical parameter for ensuring downstream ICs remain within absolute maximum ratings.
How does 1.5KE68CA B0G differ from unidirectional 1.5KE68C B0G?
1.5KE68CA B0G is bidirectional with symmetrical VBR and clamping in both directions, while 1.5KE68C B0G is unidirectional and features a cathode band for polarity-specific installation. The unidirectional version exhibits forward voltage drop (~3.5 V) under positive bias and blocks only in reverse - making it unsuitable for AC or bipolar transient scenarios where 1.5KE68CA B0G is mandatory.
Can 1.5KE68CA B0G be used in place of 1.5KE68A B0G?
No - 1.5KE68CA B0G and 1.5KE68A B0G are not interchangeable. The 'A' suffix indicates tighter VBR tolerance (64.6–71.4 V vs. 61.2–74.8 V for non-A), while 'CA' specifies bidirectional functionality. A unidirectional 1.5KE68A B0G lacks symmetrical clamping and would fail to protect against negative transients - substituting it for 1.5KE68CA B0G risks unprotected circuit damage.
1.5KE68CA 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):
- 58.1V
- Voltage - Breakdown (Min):
- 64.6V
- Voltage - Clamping (Max) @ Ipp:
- 92V
- Current - Peak Pulse (10/1000µs):
- 17A
- 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
1.5KE68CA B0G FAQ
1.How can I place an order for 1.5KE68CA B0G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE68CA 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 1.5KE68CA B0G reliable?
The price and inventory of 1.5KE68CA B0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE68CA B0G is usually 5 days.
3.What payment methods are accepted for 1.5KE68CA B0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE68CA B0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE68CA B0G?
1.5KE68CA B0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE68CA 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 1.5KE68CA B0G?
For technical support, including 1.5KE68CA B0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE68CA B0G requirements.
6.How does Aetrix verify that 1.5KE68CA B0G is sourced from the original manufacturer or authorized distributors?
All 1.5KE68CA 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 1.5KE68CA B0G meets industry standards.
7.What is the process for return or replacement of 1.5KE68CA B0G?
All 1.5KE68CA B0G units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE68CA 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 1.5KE68CA B0G part is unused and in its original packaging.
Return procedure for 1.5KE68CA B0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE68CA B0G Tags
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