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Vishay General Semiconductor - Diodes Division 1.5KE6.8CA-E3/73
- Part No.:
- 1.5KE6.8CA-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE6.8CA-E3/73.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:8,893
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Product details
Overview
1.5KE6.8CA-E3/73 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for clamping voltage transients on signal and power lines. It features a 6.8 V breakdown voltage (VBR), 1500 W peak pulse power (10/1000 µs), 10.5 V maximum clamping voltage at rated IPPM, 5.8 V stand-off voltage (VWM), and operates across –55 °C to +175 °C junction temperature range. It protects MOSFETs, ICs, and sensor interfaces in automotive and industrial power rails.
For engineers reviewing the 1.5KE6.8CA-E3/73 datasheet, 1.5KE6.8CA-E3/73 pinout, 1.5KE6.8CA-E3/73 application, or 1.5KE6.8CA-E3/73 equivalent, this page delivers verified electrical parameters, bidirectional clamping behavior, JEDEC 1.5KE package dimensions, thermal resistance (RθJA = 75 °C/W), and AEC-Q101-qualified alternatives - all critical for surge protection layout and reliability validation.
Technical Context
This bidirectional TVS diode uses a glass-passivated silicon junction optimized for sub-nanosecond response (<1 ns) to transient overvoltages. Its symmetrical I-V characteristics enable identical clamping in both polarities, with low incremental surge resistance ensuring stable voltage limiting during 10/1000 µs surges up to 143 A.
It complies with UL 497B recognition (QVGQ2) and meets JESD 201 Class 1A whisker testing. The device is rated for 1500 W non-repetitive pulse power at TA = 25 °C, derating linearly above 25 °C per Fig. 2, and supports soldering at 275 °C for 10 s per JESD 22-B106.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.45 V / 7.14 V at 10 mA test current - defines precise voltage threshold where clamping initiates reliably |
| VWM | 5.8 V - maximum continuous reverse working voltage before leakage exceeds 1000 µA |
| VC @ IPPM | 10.5 V at 143 A peak pulse - clamped voltage seen by protected circuit during worst-case 10/1000 µs surge |
| PPPM | 1500 W - peak transient energy absorption capability under standard 10/1000 µs waveform |
| IPPM | 143 A - maximum non-repetitive surge current the device sustains without failure |
| TJ Range | –55 °C to +175 °C - enables deployment in under-hood automotive and high-temp industrial environments |
| RθJA | 75 °C/W - thermal resistance from junction to ambient, critical for PCB copper pour and heatsink design |
Pinout & Package
Package: JEDEC-standard Case Style 1.5KE - molded epoxy body with matte tin-plated leads, UL 94 V-0 rated, 0.375" (9.5 mm) lead length, 0.042" (1.07 mm) lead diameter.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional terminal pair | No polarity marking; terminals are interchangeable - enables placement without orientation check on PCB |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity stress |
| 1500 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-to-line) with margin |
| Sub-nanosecond response time | Clamps transients before downstream ICs experience damaging overvoltage (e.g., <1 ns vs. typical MOV delay >25 ns) |
| AEC-Q101 qualified option available | Validated for automotive powertrain and body electronics per stress test requirements (HTOL, TC, HTRB) |
| UL 497B recognized (QVGQ2) | Meets safety agency requirements for telecom and industrial signal line protectors without additional certification |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Suppresses load dump and ISO 7637-2 pulses on 12 V battery-fed ECUs and lighting modules. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly across power input pins of MCU or CAN transceiver. Use Value: Limits transient voltage to ≤10.5 V, preventing latch-up or gate oxide rupture in 5 V/3.3 V logic interfaces. |
Use Scenario: Shields analog front-end inputs of pressure/temperature sensors connected to long cables in factory automation. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF) shunt protector on differential signal pairs (e.g., RS-485, 4–20 mA loop). Use Value: Clamps ESD (IEC 61000-4-2 ±8 kV contact) and fast transients (IEC 61000-4-4 ±2 kV) without distorting signal integrity. |
| Telecom Line Surge Protection | Consumer Power Adapter Input Stage |
Use Scenario: Installed on DSL/POE line cards to absorb lightning-induced surges on twisted-pair telecom lines. IC Role / Device Role / Timing Role: Primary shunt suppressor upstream of GDT or MOV secondary stage in multi-level protection architecture. Use Value: Fast response captures initial surge edge, reducing stress on downstream components and extending system MTBF. |
Use Scenario: Protects AC-DC converter primary-side rectifier and controller ICs against mains-borne surges (IEC 61000-4-5). IC Role / Device Role / Timing Role: Secondary-level TVS placed after X/Y capacitors and common-mode choke, before bridge rectifier. Use Value: Absorbs residual differential-mode surges that bypass filtering, preventing rectifier avalanche and controller reset. |
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 PPPM (600 W), smaller SMB package (3.5 mm × 3.5 mm), higher VC (11.5 V @ 53.3 A) | Preferred for space-constrained consumer PCBs; insufficient for 1.5 kV+ IEC 61000-4-5 Level 4 compliance | Select when board area is critical and surge energy is ≤600 W; verify clamping margin with actual surge waveform. |
| 1.5KE6.8CAHE3_B | Identical electrical specs; AEC-Q101 qualified, JESD 201 Class 2 whisker rating, HE3 suffix denotes automotive-grade revision code | Required for automotive OEM designs needing qualification evidence and extended reliability testing | Choose for automotive applications requiring documented AEC-Q101 conformance and enhanced process control traceability. |
Compared with 1.5KE6.8CA-E3/73, SMBJ6.8CA trades peak power and robustness for compact size, while 1.5KE6.8CAHE3_B adds automotive qualification without altering clamping performance - enabling direct substitution only where qualification status is mandatory.
Availability
1.5KE6.8CA-E3/73 is available at Aetrix Electronics and suitable for automotive infotainment power rails, industrial PLC analog I/O modules, telecom line card surge protection, and consumer AC-DC adapter input stages requiring stable component supply and consistent parametric performance across production lots.
Supply support for 1.5KE6.8CA-E3/73 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, optoelectronics, and passive components for demanding industrial and automotive applications.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments, targeting applications where legacy MOVs lack speed and precision, and polymer-based TVS devices lack power handling.
FAQ
What is the clamping voltage of the 1.5KE6.8CA-E3/73 under a 10/1000 µs surge?
The 1.5KE6.8CA-E3/73 clamps to a maximum of 10.5 V when subjected to its rated peak pulse current of 143 A (10/1000 µs waveform). This value is measured per Figure 7 in the Vishay datasheet 88301 and represents the upper limit of voltage seen by protected circuitry during standardized surge testing - critical for verifying safe operating margins of downstream 5 V or 3.3 V ICs.
Is the 1.5KE6.8CA-E3/73 RoHS compliant and halogen-free?
Yes, the 1.5KE6.8CA-E3/73 carries the "E3" suffix, which indicates full RoHS compliance per EU Directive 2011/65/EU and halogen-free status per Vishay's material declaration (Doc. #99912). The molding compound meets UL 94 V-0 flammability rating, and matte tin-plated leads comply with J-STD-002 and JESD 22-B102 solderability standards.
Does the 1.5KE6.8CA-E3/73 have polarity markings for PCB placement?
No - the 1.5KE6.8CA-E3/73 is a bidirectional TVS diode with symmetrical terminals and no cathode band or polarity marking. Its internal structure provides identical clamping behavior in both directions, allowing unrestricted orientation during automated placement or manual assembly without functional impact.
What is the maximum junction temperature rating for the 1.5KE6.8CA-E3/73?
The 1.5KE6.8CA-E3/73 has a maximum junction temperature (TJ) rating of +175 °C and a minimum of –55 °C. This wide operating range supports use in under-hood automotive modules, industrial motor drives, and outdoor telecom equipment where ambient temperatures exceed 105 °C and thermal management relies on PCB copper mass rather than active cooling.
How does the 1.5KE6.8CA-E3/73 compare to unidirectional variants like 1.5KE6.8A-E3/73?
The 1.5KE6.8CA-E3/73 differs from 1.5KE6.8A-E3/73 solely in polarity: "CA" denotes bidirectional operation with symmetrical clamping, while "A" is unidirectional with a cathode band. Both share identical VBR, VC, PPPM, and package. Use 1.5KE6.8CA-E3/73 where AC-coupled or floating signal lines require protection in both voltage polarities - such as RS-485 buses or transformer-isolated power supplies.
1.5KE6.8CA-E3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- 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):
- 143A
- 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:
- 1.5KE
1.5KE6.8CA-E3/73 FAQ
1.How can I place an order for 1.5KE6.8CA-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE6.8CA-E3/73 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-E3/73 reliable?
The price and inventory of 1.5KE6.8CA-E3/73 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-E3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KE6.8CA-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE6.8CA-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE6.8CA-E3/73?
1.5KE6.8CA-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE6.8CA-E3/73 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-E3/73?
For technical support, including 1.5KE6.8CA-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE6.8CA-E3/73 requirements.
6.How does Aetrix verify that 1.5KE6.8CA-E3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE6.8CA-E3/73 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-E3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE6.8CA-E3/73?
All 1.5KE6.8CA-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE6.8CA-E3/73, 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-E3/73 part is unused and in its original packaging.
Return procedure for 1.5KE6.8CA-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE6.8CA-E3/73 Tags
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