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Taiwan Semiconductor Corporation 1.5KE68A R0G
- Part No.:
- 1.5KE68A R0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE68A R0G.pdf
- Description:
- TVS DIODE 58.1VWM 92VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:2,770
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Product details
Overview
1.5KE68A R0G from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with nominal breakdown voltage 68V, working stand-off voltage 58.1V, clamping voltage 92.0V at 17A peak pulse current, and junction temperature range −55°C to +175°C - used for automotive ECU power rail protection against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the 1.5KE68A R0G datasheet, 1.5KE68A R0G pinout, 1.5KE68A R0G application, or 1.5KE68A R0G equivalent, this page delivers verified electrical parameters, DO-201 terminal mapping, AEC-Q101 qualification status, clamping performance under 10/1000μs surge, and real-world use cases in automotive and industrial power systems.
Technical Context
The 1.5KE68A R0G operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its minimum breakdown voltage of 64.6V (tested at 1mA), clamping transient energy within 1.0ps response time. Its 92.0V maximum clamping voltage at 17A IPP ensures downstream ICs remain below safe operating limits during 1500W surges.
Designed for high-reliability automotive applications, it meets ISO 7637-2 immunity requirements and supports steady-state power dissipation up to 5W at TL = 75°C on 16mm × 16mm copper pad. The device exhibits low dynamic impedance and typical reverse leakage <1μA above 10V, enabling stable protection without loading sensitive circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 64.6V / 71.4V @ IT = 1mA - defines precise avalanche onset window for reliable overvoltage detection |
| VWM | 58.1V - maximum continuous reverse voltage before leakage rises significantly; sets safe operating margin below VBR |
| VC @ IPP | 92.0V @ 17A - peak clamped voltage during 10/1000μs surge; determines protected circuit's maximum stress level |
| PPK | 1500W - single-pulse surge power handling capability; enables robust protection against load dump and inductive switching |
| Junction Temp Range | −55°C to +175°C - supports operation in under-hood automotive environments and industrial enclosures |
| Response Time | <1.0ps - ultrafast turn-on ensures suppression before transient energy reaches vulnerable components |
| Leakage Current | <1μA @ VWM - negligible standby power loss and no signal integrity impact on high-impedance nodes |
Pinout & Package
Package: DO-201 axial lead package with cathode band marking; tin-plated leads compliant with J-STD-002 solderability; UL 94V-0 molding compound; weight ≈ 0.090g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path / low-impedance return during clamping | Connected to system ground or low-side reference; carries full surge current during transient events |
| Cathode | Protected line input / high-side connection point | Connected to power rail (e.g., 12V/24V battery line); blocks normal operation but avalanches during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including temperature cycling, HTRB, and ESD |
| 1500W surge rating | Withstands single 10/1000μs transients up to 1500W without degradation - suitable for ISO 7637-2 Pulse 5a (load dump) |
| Clamping voltage 92.0V @ 17A | Ensures protected ICs (e.g., MCU power pins, CAN transceivers) stay below absolute maximum ratings during worst-case surge |
| Low dynamic impedance | Minimizes voltage overshoot during fast-rising transients - critical for protecting high-speed interface ICs |
| RoHS & halogen-free | Complies with IEC 61249-2-21; supports environmentally regulated industrial and automotive supply chains |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Power Input Stage |
|---|---|
Use Scenario: Protects microcontroller and CAN transceiver power rails from battery line transients during load dump and jump-start events. IC Role / Device Role: Unidirectional TVS placed between 12V supply and ground, upstream of DC/DC converter input. Use Value: Clamps 12V rail to ≤92.0V during 1500W ISO 7637-2 Pulse 5a, preventing latch-up or permanent damage to 3.3V/5V logic. | Use Scenario: Shields programmable logic controller inputs from inductive kickback caused by relay and solenoid switching. IC Role / Device Role: Primary overvoltage clamp on 24V DC input bus feeding isolated power supplies and digital I/O drivers. Use Value: Limits transient voltage to 92.0V at 17A, ensuring sustained operation of 24V-rated regulators and isolators without derating. |
| LED Headlamp Driver Unit | Telecom Remote Radio Unit (RRU) Power Entry |
Use Scenario: Safeguards LED driver ICs and MOSFET gate drivers from alternator-induced spikes and ESD during service. IC Role / Device Role: Standoff protection on 12V input to buck controller IC; positioned before input capacitor. Use Value: Maintains VWM = 58.1V margin below nominal 12V system, enabling zero false-triggering while suppressing >64.6V threats. | Use Scenario: Guards outdoor base station power entry against lightning-induced surges and AC coupling transients. IC Role / Device Role: First-stage clamping device on −48V DC telecom power feed before DC/DC conversion and monitoring circuitry. Use Value: Withstands 10/1000μs surges up to 1500W and maintains <1μA leakage at −48V, preserving remote sensor accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64A | Lower peak power (600W), smaller SMB package, VC = 103V @ 11.9A | Not rated for ISO 7637-2 Pulse 5a; suited for secondary-level or lower-energy protection | Select when board space is constrained and surge threat level is limited to IEC 61000-4-5 Level 3 |
| 1N6291A | Same family, identical specs except marking code; JEDEC type number for same electrical characteristics | No functional difference; used interchangeably in BOMs where JEDEC designation is required | Choose for legacy design documentation or distributor stock alignment with JEDEC-standard part numbers |
Compared with 1.5KE68A R0G, SMBJ64A offers compact size but reduced surge capacity and higher clamping voltage, while 1N6291A provides identical electrical performance in JEDEC-compliant labeling - making the latter a direct specification-equivalent alternative without design change.
Availability
1.5KE68A R0G is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC power inputs, and LED lighting driver units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 1.5KE68A R0G 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 developed specifically for high-energy transient suppression in automotive and industrial power systems, emphasizing AEC-Q101 reliability, ISO 7637-2 compliance, and robust thermal performance in DO-201 packaging.
FAQ
What is the clamping voltage of the 1.5KE68A R0G under standard test conditions?
The 1.5KE68A R0G has a maximum clamping voltage (VC) of 92.0V at 17A peak pulse current (IPP) under the 10/1000μs waveform per IEC 61000-4-5. This value is measured after the device enters avalanche conduction and represents the upper voltage limit imposed on the protected circuit during surge events - a critical parameter for ensuring downstream ICs remain within their absolute maximum ratings. The 1.5KE68A R0G achieves this with low dynamic impedance and sub-1ps response time.
Is the 1.5KE68A R0G AEC-Q101 qualified?
Yes, the 1.5KE68A R0G is AEC-Q101 qualified, as confirmed in Taiwan Semiconductor's official 1.5KE series documentation (Version O2104). This qualification covers stress tests including high-temperature reverse bias (HTRB), temperature cycling, and electrostatic discharge (ESD), validating its suitability for automotive powertrain and body electronics applications. The 1.5KE68A R0G meets all requirements for use in harsh automotive environments where reliability and long-term stability are mandatory.
What is the working stand-off voltage (VWM) of the 1.5KE68A R0G, and why does it matter?
The working stand-off voltage (VWM) of the 1.5KE68A R0G is 58.1V - the maximum DC or continuous reverse voltage the device can withstand without entering significant conduction. This parameter ensures the 1.5KE68A R0G remains non-conductive during normal operation of a 48V or 24V system with margin, avoiding leakage-related power loss or false triggering. It directly determines placement feasibility on power rails and must be selected ≥10–20% above the system's maximum steady-state voltage to guarantee reliable standoff behavior. The 1.5KE68A R0G's VWM provides 5.9V margin above a nominal 52V rail.
How does the 1.5KE68A R0G compare to bidirectional TVS diodes like 1.5KE68CA?
The 1.5KE68A R0G is unidirectional and intended for DC power line protection where polarity is fixed (e.g., +12V to ground), offering lower leakage and tighter VBR tolerance than its bidirectional counterpart 1.5KE68CA. The 1.5KE68CA supports AC or polarity-agnostic applications but exhibits higher capacitance and symmetric clamping in both directions. For automotive battery line protection, the 1.5KE68A R0G is preferred due to its superior leakage performance (<1μA) and optimized response for unidirectional surges like load dump. The 1.5KE68A R0G cannot replace 1.5KE68CA in AC-coupled signal lines.
What package type does the 1.5KE68A R0G use, and what are its mechanical features?
The 1.5KE68A R0G uses the DO-201 axial lead package, featuring pure tin-plated leads compliant with J-STD-002 solderability standards, UL 94V-0 flammability-rated epoxy molding compound, and cathode band polarity marking. Its mechanical dimensions conform to JEDEC DO-201 outlines, with approximate weight of 0.090g. The DO-201 package enables high-power dissipation (5W at TL = 75°C on 16mm × 16mm copper pad) and supports wave or reflow soldering. The 1.5KE68A R0G's DO-201 form factor is industry-standard for high-energy TVS diodes requiring robust thermal and mechanical reliability.
1.5KE68A R0G 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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- 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
1.5KE68A R0G FAQ
1.How can I place an order for 1.5KE68A R0G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE68A R0G 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 1.5KE68A R0G reliable?
The price and inventory of 1.5KE68A R0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE68A R0G is usually 5 days.
3.What payment methods are accepted for 1.5KE68A R0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE68A R0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE68A R0G?
1.5KE68A R0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE68A R0G 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 1.5KE68A R0G?
For technical support, including 1.5KE68A R0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE68A R0G requirements.
6.How does Aetrix verify that 1.5KE68A R0G is sourced from the original manufacturer or authorized distributors?
All 1.5KE68A R0G 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 1.5KE68A R0G meets industry standards.
7.What is the process for return or replacement of 1.5KE68A R0G?
All 1.5KE68A R0G units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE68A R0G, 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 1.5KE68A R0G part is unused and in its original packaging.
Return procedure for 1.5KE68A R0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE68A R0G Tags
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