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Vishay General Semiconductor - Diodes Division 1.5KE6.8CA-E3/51
- Part No.:
- 1.5KE6.8CA-E3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE6.8CA-E3/51.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:8,663
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Product details
Overview
1.5KE6.8CA-E3/51 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 6.8 V breakdown voltage (VBR = 6.45–7.14 V at 10 mA), 1500 W peak pulse power (10/1000 µs), clamping voltage of 10.5 V at 143 A, and operates across –55 °C to +175 °C. It is widely deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the 1.5KE6.8CA-E3/51 datasheet, 1.5KE6.8CA-E3/51 pinout, 1.5KE6.8CA-E3/51 application, or 1.5KE6.8CA-E3/51 equivalent, this page delivers verified electrical parameters, JEDEC 1.5KE package details, bidirectional clamping behavior, thermal derating curves, and RoHS-compliant commercial-grade sourcing guidance - all validated against Vishay Document #88301 (Rev. 09-Aug-2022).
Technical Context
This device implements a glass-passivated silicon junction optimized for sub-nanosecond response (<1 ns) to transient surges. Its bidirectional architecture enables symmetrical clamping in AC-coupled or floating signal paths without polarity constraints, eliminating need for orientation during placement.
It sustains 1500 W peak pulse power under standardized 10/1000 µs waveform with 0.01% duty cycle, and exhibits low incremental surge resistance - critical for limiting let-through energy to downstream ICs like microcontrollers and CAN transceivers. Standoff voltage is 5.8 V, reverse leakage ≤1000 µA at VWM, and maximum junction temperature is rated to 175 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.45 V / 7.14 V at 10 mA - defines precise clamping onset threshold for bidirectional transients |
| VWM | 5.8 V - maximum continuous working voltage before leakage exceeds 1000 µA |
| VC @ IPPM | 10.5 V at 143 A - peak clamped voltage during 1500 W surge, limiting stress on protected ICs |
| PPPM | 1500 W - peak pulse power handling per 10/1000 µs waveform, enabling lightning-level surge immunity |
| TJ range | –55 °C to +175 °C - supports under-hood automotive and industrial ambient environments |
| Package | JEDEC DO-201AD (Case Style 1.5KE) - axial-leaded, epoxy-molded, UL 94 V-0 compliant housing |
| RoHS | E3 suffix - RoHS-compliant matte tin-plated leads, JESD 201 Class 1A whisker tested |
Pinout & Package
1.5KE6.8CA-E3/51 uses the standard axial-leaded DO-201AD package (Case Style 1.5KE), with no polarity marking - consistent with bidirectional TVS construction. The molded epoxy body meets UL 94 V-0 flammability rating; leads are matte tin-plated and solderable per J-STD-002/JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional conduction path | No cathode band; terminals interchangeable - enables placement in AC or floating circuits without orientation check |
| Lead 1 / Lead 2 | Transient current return path | Low-inductance axial structure minimizes voltage overshoot during fast-rising ESD/lightning events |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR tolerance (±5%) and long-term reliability under thermal cycling |
| 1500 W peak pulse power (10/1000 µs) | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth) without degradation |
| Sub-nanosecond response time | Clamps transients within 1 ns - faster than MOVs or polymer-based protectors |
| Low clamping ratio (VC/VBR ≈ 1.55) | Minimizes let-through voltage to preserve margin for 5 V logic and analog front-ends |
| Ambient operating range up to +175 °C | Validated for engine control units (ECUs), motor drives, and industrial PLC I/O modules |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting LIN bus sensors and ABS wheel speed sensors from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across sensor supply and ground, absorbing ±100 V transients. Use Value: Prevents latch-up or gate oxide damage in ASIC sensor interfaces while maintaining <5.8 V DC bias integrity. |
Use Scenario: Shielding 24 V digital input modules from inductive kickback in factory automation cabinets. IC Role / Device Role / Timing Role: Primary surge shunt on field-side input traces, coordinated with series impedance for IEC 61000-4-4 compliance. Use Value: Limits transient voltage to <10.5 V during 1 kA surge events, preserving optocoupler CTR and microcontroller GPIO integrity. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Secondary-side transient suppression on POTS line interface cards exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Bidirectional clamp between tip/ring and ground, operating in parallel with gas discharge tube (GDT) primary stage. Use Value: Provides fast follow-on clamping after GDT ionization, reducing let-through energy by >70% versus GDT-only designs. |
Use Scenario: Input-stage surge protection for USB-C PD adapters subjected to EN 61000-4-5 line-earth surges. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF) TVS across AC input rectifier output, suppressing differential-mode transients. Use Value: Clamps 1.5 kV surges to <10.5 V without affecting 100 kHz PFC operation or inducing EMI via parasitic coupling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.8CA | DO-214AA package; lower PPPM (600 W); same VBR range and bidirectional configuration | Better suited for PCB space-constrained designs; not rated for 1500 W surges | Select when board area is limited and surge requirements are ≤600 W (IEC 61000-4-5 Level 3) |
| 1.5SMC6.8CA | Surface-mount SMC package; identical 1500 W rating and VBR; higher thermal resistance (RθJA = 110 °C/W vs. 75 °C/W) | Requires careful thermal pad design; unsuitable for high-ambient or high-duty-cycle surge environments | Choose for automated assembly where axial leads are incompatible, but verify thermal margin at 175 °C junction temp |
Compared with SMBJ6.8CA and 1.5SMC6.8CA, the 1.5KE6.8CA-E3/51 delivers superior thermal performance (RθJL = 15.4 °C/W) and proven axial-leaded robustness for high-energy surge environments - making it preferred for automotive and industrial applications demanding repeatable 1500 W handling without derating.
Availability
1.5KE6.8CA-E3/51 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O interface hardening, and telecom line surge suppression requiring stable component supply, full traceability, and long-lifecycle support.
Supply support for 1.5KE6.8CA-E3/51 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, and passive components for automotive, industrial, and computing markets.
The 1.5KE family was engineered specifically for high-energy transient suppression in harsh environments - delivering consistent 1500 W surge capability, extended temperature operation, and AEC-Q101 qualification options for mission-critical systems.
FAQ
What is the breakdown voltage tolerance for 1.5KE6.8CA-E3/51?
The 1.5KE6.8CA-E3/51 has a specified breakdown voltage range of 6.45 V to 7.14 V at 10 mA test current, corresponding to ±5% tolerance around the nominal 6.8 V rating. This tight VBR window ensures predictable clamping onset across production lots and temperature extremes, critical for protecting 5 V logic rails without false triggering.
Is 1.5KE6.8CA-E3/51 RoHS compliant and lead-free?
Yes, the 1.5KE6.8CA-E3/51 carries the E3 suffix, indicating full RoHS compliance per Directive 2011/65/EU, with matte tin-plated leads and no lead, cadmium, mercury, hexavalent chromium, PBB, or PBDE. It also passes JESD 201 Class 1A whisker testing, confirming suitability for high-reliability soldering processes.
Does 1.5KE6.8CA-E3/51 have AEC-Q101 qualification?
No - the 1.5KE6.8CA-E3/51 is a commercial-grade part (E3 suffix). AEC-Q101 qualified versions use the HE3 suffix (e.g., 1.5KE6.8CAHE3_B). For automotive applications requiring AEC-Q101, engineers must specify the HE3 variant; the E3 version is intended for industrial and consumer use where qualification is not mandated.
What is the maximum clamping voltage of 1.5KE6.8CA-E3/51 under surge conditions?
The 1.5KE6.8CA-E3/51 clamps to a maximum of 10.5 V at its rated peak pulse current of 143 A (10/1000 µs waveform). This low VC ensures protected circuitry - such as 5 V microcontrollers or analog sensors - remains within safe operating voltage margins during high-energy transients.
Can 1.5KE6.8CA-E3/51 be used in AC signal paths?
Yes - as a bidirectional TVS, the 1.5KE6.8CA-E3/51 provides symmetrical clamping in both polarities, making it ideal for AC-coupled interfaces like telecom lines, audio inputs, or differential sensor outputs. Its unmarked axial package eliminates orientation concerns, simplifying layout and assembly for floating or bipolar signal rails.
1.5KE6.8CA-E3/51 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Obsolete
- 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-E3/51 FAQ
1.How can I place an order for 1.5KE6.8CA-E3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE6.8CA-E3/51 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-E3/51 reliable?
The price and inventory of 1.5KE6.8CA-E3/51 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-E3/51 is usually 5 days.
3.What payment methods are accepted for 1.5KE6.8CA-E3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE6.8CA-E3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE6.8CA-E3/51?
1.5KE6.8CA-E3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE6.8CA-E3/51 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-E3/51?
For technical support, including 1.5KE6.8CA-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE6.8CA-E3/51 requirements.
6.How does Aetrix verify that 1.5KE6.8CA-E3/51 is sourced from the original manufacturer or authorized distributors?
All 1.5KE6.8CA-E3/51 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-E3/51 meets industry standards.
7.What is the process for return or replacement of 1.5KE6.8CA-E3/51?
All 1.5KE6.8CA-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE6.8CA-E3/51, 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-E3/51 part is unused and in its original packaging.
Return procedure for 1.5KE6.8CA-E3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE6.8CA-E3/51 Tags
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