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Taiwan Semiconductor Corporation 1.5KE68CA
- Part No.:
- 1.5KE68CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE68CA.pdf
- Description:
- TVS 1500W 68V 5% BIDIR DO-201
- Quantity:
- Payment:
- Shipping:
Inventory:8,027
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Product details
Overview
1.5KE68CA from Taiwan Semiconductor is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with nominal breakdown voltage 68V, working stand-off voltage 55.1V, clamping voltage 98.0V at 16A peak pulse current, and AEC-Q101 qualification for automotive use.
For engineers reviewing the 1.5KE68CA datasheet, 1.5KE68CA pinout, 1.5KE68CA application, or 1.5KE68CA equivalent, this device serves as a robust overvoltage protection component for DC power rails, CAN/LIN bus lines, and sensor interfaces where fast response (<5ns), low leakage (<1µA), and ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance are required.
Technical Context
The 1.5KE68CA operates as a bidirectional avalanche diode, conducting symmetrically in both polarities above its breakdown threshold (61.2–74.8V at 1mA test current). Its junction capacitance is not specified in the provided documentation, but it is optimized for high-energy transients rather than high-frequency signal integrity.
It delivers 1500W peak pulse power at 10/1000μs waveform, with clamping voltage tightly controlled at 98.0V under 16A surge current. Thermal derating applies above 25°C ambient, and maximum junction temperature is rated to +175°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 61.2V / 74.8V at 1mA - defines reliable conduction onset range under standardized test conditions |
| VWM | 55.1V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPP | 98.0V at 16A - clamped voltage during worst-case 10/1000μs surge, limiting downstream stress |
| PPK | 1500W - peak transient power handling capability per single non-repetitive event |
| IPP | 16A - maximum peak impulse current supported at rated clamping voltage |
| TJ(max) | +175°C - maximum allowable junction temperature, enabling operation in under-hood automotive environments |
| Package | DO-201 - industry-standard axial-leaded package with tin-plated leads, UL 94V-0 molding compound |
Pinout & Package
DO-201 package: axial-leaded, cylindrical body with cathode band marking for unidirectional variants; 1.5KE68CA is bidirectional and lacks polarity marking - terminals are functionally 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 fixed polarity assignment |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, mechanical shock, and humidity testing |
| ISO 7637-2 compliance | Withstands Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line impedance stabilization network events) |
| Fast response time | <5.0ns turn-on for bidirectional operation - limits voltage overshoot during nanosecond-scale transients |
| Low dynamic impedance | Enables tight clamping (VC − VBR = ~25V) despite 1500W surge, reducing energy dissipation in protected ICs |
| Halogen-free & RoHS | Meets IEC 61249-2-21 and EU RoHS Directive - suitable for environmentally regulated industrial and automotive production |
Applications
| Automotive Power Rail Protection | CAN Bus Transient Suppression |
|---|---|
Use Scenario: Protecting 12V battery-fed ECUs from load dump and alternator ripple-induced spikes. IC Role / Device Role / Timing Role: Bidirectional TVS placed across power input to clamp surges before they reach LDOs, microcontrollers, or CAN transceivers. Use Value: Clamps to 98.0V during 16A transients, preventing damage to 36V-rated components while maintaining AEC-Q101 qualification. | Use Scenario: Safeguarding CAN FD physical layer against ESD and coupled noise from adjacent high-current wiring. IC Role / Device Role / Timing Role: Placed differentially across CAN_H/CAN_L lines to absorb common-mode and differential transients without distorting signal integrity. Use Value: Symmetrical clamping ensures equal protection on both lines; <5ns response preserves CAN bit timing up to 5 Mbps. |
| Sensor Interface Protection | Industrial PLC Input Stage |
Use Scenario: Shielding analog/digital sensors (e.g., pressure, temperature) connected to microcontroller ADC inputs from cable-induced surges. IC Role / Device Role / Timing Role: Mounted at connector entry point to shunt transients before reaching precision amplifier or ESD-sensitive GPIO pins. Use Value: 55.1V VWM allows safe operation on 48V sensor supply rails; <1µA leakage avoids measurement drift. | Use Scenario: Hardening digital input modules of programmable logic controllers against field-wiring transients in factory automation. IC Role / Device Role / Timing Role: Installed across optocoupler input or Schmitt-trigger input to prevent false triggering or latch-up during 24V DC line disturbances. Use Value: 1500W surge rating handles repetitive switching noise; DO-201 package enables through-hole mounting on rugged industrial PCBs. |
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 | Same DO-214AC (SMA) package; lower PPK (400W); VC = 112V @ 5.3A | Not AEC-Q101 qualified; limited to commercial/industrial use | Select when board space constraints favor surface-mount and surge energy requirements are ≤400W |
| ON Semiconductor 1.5SMC68CA | DO-214AB (SMC) package; same 1500W rating; VC = 112V @ 13.4A | Higher clamping voltage increases stress on downstream ICs; no ISO 7637-2 validation cited | Choose only if DO-201 axial footprint is unavailable and thermal management supports SMC's higher thermal resistance |
Compared with SMAJ68CA and 1.5SMC68CA, the 1.5KE68CA offers superior automotive qualification, lower clamping voltage (98.0V vs. ≥112V), and proven ISO 7637-2 immunity - critical for functional safety-critical power domains.
Availability
1.5KE68CA is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC input protection, and CAN bus interface hardening requiring stable component supply and long-term lifecycle support.
Supply support for 1.5KE68CA 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, rectifiers, and MOSFETs for automotive, industrial, and consumer markets.
The 1.5KE series was designed specifically for high-energy transient suppression in harsh environments - emphasizing AEC-Q101 reliability, ISO 7637-2 compliance, and robust DO-201 packaging for under-hood and factory-floor deployment.
FAQ
What is the polarity configuration of the 1.5KE68CA?
The 1.5KE68CA is a bidirectional TVS diode with symmetrical avalanche characteristics - neither terminal is designated anode or cathode. It clamps transients of either polarity equally, making it ideal for AC-coupled or differential signal lines like CAN_H/CAN_L. Unlike unidirectional variants (e.g., 1.5KE68A), it carries no cathode band marking.
Does the 1.5KE68CA meet automotive qualification standards?
Yes, the 1.5KE68CA is AEC-Q101 qualified, confirming its suitability for automotive applications. This includes rigorous testing for temperature cycling, mechanical shock, humidity, and high-temperature operating life. Its compliance with ISO 7637-2 Pulse 1/2a/2b/3a/3b further validates its use in vehicle power networks subject to load dump and inductive switching events.
What is the maximum clamping voltage of the 1.5KE68CA under surge conditions?
The maximum clamping voltage of the 1.5KE68CA is 98.0V at 16A peak pulse current (IPP) under the standard 10/1000μs waveform. This value represents the upper limit of voltage seen by downstream circuitry during a full-rated surge event and is critical for ensuring protected ICs remain within their absolute maximum ratings.
How does the 1.5KE68CA compare to unidirectional versions like 1.5KE68A?
The 1.5KE68CA differs from 1.5KE68A in polarity behavior: 1.5KE68CA is bidirectional (clamps both positive and negative transients), while 1.5KE68A is unidirectional (clamps only reverse-polarity surges). The 1.5KE68CA has identical VBR, VWM, and PPK ratings but exhibits slightly higher VC (98.0V vs. 92.0V for 1.5KE68A) due to symmetrical junction design - a trade-off for dual-polarity protection.
What packaging and marking format does the 1.5KE68CA use?
The 1.5KE68CA is supplied in DO-201 axial package with pure tin-plated leads compliant with J-STD-002 solderability. As a bidirectional device, it carries no cathode band; marking consists of "68C" (voltage code + polarity suffix) plus date and factory codes per TSC's DO-201 marking diagram. Packaging options include 1,250-piece tape-and-reel or 500-piece ammo box.
1.5KE68CA 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):
- 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 FAQ
1.How can I place an order for 1.5KE68CA through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE68CA 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 reliable?
The price and inventory of 1.5KE68CA 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 is usually 5 days.
3.What payment methods are accepted for 1.5KE68CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE68CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE68CA?
1.5KE68CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE68CA 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?
For technical support, including 1.5KE68CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE68CA requirements.
6.How does Aetrix verify that 1.5KE68CA is sourced from the original manufacturer or authorized distributors?
All 1.5KE68CA 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 meets industry standards.
7.What is the process for return or replacement of 1.5KE68CA?
All 1.5KE68CA units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE68CA, 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 part is unused and in its original packaging.
Return procedure for 1.5KE68CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE68CA Tags
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