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Vishay General Semiconductor - Diodes Division 1.5KE6.8C-E3/54
- Part No.:
- 1.5KE6.8C-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE6.8C-E3/54.pdf
- Description:
- TVS DIODE 5.5VWM 10.8VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:4,337
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Product details
Overview
1.5KE6.8C-E3/54 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 = 6.45–7.14 V at 10 mA), 1500 W peak pulse power (10/1000 µs), and clamps to 10.5 V at 143 A, protecting sensitive ICs and MOSFETs in industrial and automotive interfaces.
For engineers reviewing the 1.5KE6.8C-E3/54 datasheet, 1.5KE6.8C-E3/54 pinout, 1.5KE6.8C-E3/54 application, or 1.5KE6.8C-E3/54 equivalent, key selection criteria include bidirectional clamping capability, UL 94 V-0 molded epoxy package, AEC-Q101 qualification eligibility (HE3 variant), and compatibility with 10/1000 µs surge waveforms per IEC 61000-4-5.
Technical Context
This device operates as a silicon avalanche diode optimized for fast transient suppression in both polarities. Its glass-passivated junction enables sub-nanosecond response time (<1 ns), low incremental surge resistance, and stable clamping under repetitive 0.01% duty cycle surges. The 1.5KE6.8C-E3/54 is rated for -55 °C to +175 °C junction temperature and exhibits a temperature coefficient of VBR of +0.057 %/°C.
Unlike unidirectional variants, the "C" suffix denotes bidirectional construction with no polarity marking-critical for AC-coupled or differential signal protection. It supports surge currents up to 143 A (10/1000 µs) while maintaining clamping voltage ≤10.5 V, enabling robust protection without forward conduction during normal operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.45 V / 7.14 V at 10 mA - defines precise avalanche onset window for reliable triggering |
| VWM | 5.80 V - maximum working voltage before leakage exceeds 1000 µA; sets safe operating margin below VBR |
| VC @ IPPM | 10.5 V at 143 A - actual clamped voltage during 1500 W transient; determines protected circuit stress level |
| PPPM | 1500 W - peak pulse power handling with 10/1000 µs waveform; meets IEC 61000-4-5 Level 4 immunity |
| IPPM | 143 A - maximum non-repetitive surge current; defines minimum PCB trace width and layout clearance |
| TJ max | +175 °C - high-temperature operation support for under-hood automotive or industrial power supplies |
| Package | Case Style 1.5KE - axial-leaded DO-201AD package (0.375" lead length); UL 94 V-0 compliant epoxy body |
Pinout & Package
1.5KE6.8C-E3/54 uses a two-terminal axial-leaded DO-201AD (Case Style 1.5KE) package with no polarity marking-consistent with its bidirectional function. Leads are matte tin-plated, solderable per J-STD-002 and JESD 22-B102, and qualified for 275 °C solder dip (10 s).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction | No cathode band; terminals interchangeable-enables placement in AC paths or differential lines without orientation check |
| Lead 1 / Lead 2 | Current path for surge conduction | Both leads carry equal surge current in either direction; requires symmetric PCB routing for balanced impedance |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated chip junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity |
| 1500 W peak pulse power (10/1000 µs) | Supports Level 4 IEC 61000-4-5 surge immunity without derating in standard PCB layouts |
| Sub-nanosecond response time | Clamps transients before downstream ICs experience overvoltage-critical for high-speed data lines |
| UL 94 V-0 flammability rating | Molded epoxy body prevents flame propagation during catastrophic failure events |
| AEC-Q101 qualification path | HE3 variant available for automotive applications; E3 suffix meets JESD 201 Class 1A whisker test |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of gate drivers and feedback sensors against inductive kickback from relay coils and solenoids. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across relay coil or MOSFET drain-source to absorb L·di/dt energy. Use Value: Limits voltage spikes to ≤10.5 V, preventing gate oxide rupture in 12 V/24 V logic-level MOSFETs and ensuring system-level EMC compliance. | Use Scenario: Surge suppression on LIN bus lines and sensor inputs exposed to load dump and jump-start conditions. IC Role / Device Role / Timing Role: Primary TVS on vehicle subnetworks where bidirectional transients occur due to shared ground noise and battery reversal risk. Use Value: Withstands 143 A surges while maintaining <10.5 V clamping-preserves LIN transceiver integrity without requiring external series resistors. |
| Consumer Power Adapters | Telecom DSL Line Interfaces |
Use Scenario: Input-stage protection against lightning-induced surges on AC-DC adapter primary-side rectifiers. IC Role / Device Role / Timing Role: Secondary-level TVS after MOV, providing precise clamping for downstream bridge rectifier and controller ICs. Use Value: 6.8 V VWM allows use with 5 V auxiliary rails; 1500 W rating handles residual surges that bypass upstream protection. | Use Scenario: Differential-mode surge protection on twisted-pair DSL lines subject to induced lightning transients. IC Role / Device Role / Timing Role: Bidirectional clamp across line pair (tip/ring) to suppress common-mode and differential surges simultaneously. Use Value: Symmetrical clamping ensures equal protection regardless of surge polarity-essential for full-duplex xDSL signaling integrity. |
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 (SMB), lower 600 W PPPM, same VBR range and bidirectional configuration | Surface-mount only; unsuitable for through-hole designs or high-power dissipation without heatsinking | Select when board space is constrained and surge levels are ≤600 W; verify thermal performance in SMB footprint. |
| 1.5KE6.8CA | Same 1.5KE package and electrical specs, but E3/54 denotes tape-and-reel packaging (1400 pcs/reel) vs. bulk or different reel codes | No functional difference; identical device-only packaging and ordering format differs | Choose 1.5KE6.8CA for alternate packaging formats; 1.5KE6.8C-E3/54 is preferred for automated SMT assembly with 13" paper tape. |
Compared with SMBJ6.8CA, the 1.5KE6.8C-E3/54 delivers 2.5× higher surge power handling and axial-leaded mechanical robustness, while 1.5KE6.8CA is a packaging variant-not an electrical alternative-making the E3/54 version optimal for high-reliability through-hole or mixed-technology assemblies.
Availability
1.5KE6.8C-E3/54 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, consumer power adapters, and telecom DSL line interfaces requiring stable component supply and long-lifecycle support.
Supply support for 1.5KE6.8C-E3/54 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 diodes, rectifiers, and protection devices with emphasis on reliability, power handling, and automotive-grade qualification.
The 1.5KE family was engineered for high-energy transient suppression in harsh environments-targeting industrial automation, automotive subsystems, and infrastructure equipment where 1500 W surge immunity and UL 94 V-0 safety compliance are mandatory.
FAQ
What is the clamping voltage of the 1.5KE6.8C-E3/54 under maximum surge conditions?
The 1.5KE6.8C-E3/54 clamps to 10.5 V at its peak pulse current of 143 A (10/1000 µs waveform). This value is measured per JEDEC standards and represents the maximum voltage imposed on protected circuitry during a full-rated 1500 W transient event. It is confirmed in the Electrical Characteristics table of Vishay document 88301, revision 09-Aug-2022.
Is the 1.5KE6.8C-E3/54 suitable for automotive applications?
The 1.5KE6.8C-E3/54 is RoHS-compliant and commercial-grade; however, the HE3 variant (e.g., 1.5KE6.8CAHE3_B) is AEC-Q101 qualified. While the 1.5KE6.8C-E3/54 shares identical electrical specs, it lacks formal automotive qualification. For production automotive use, specify the HE3 suffix version-1.5KE6.8C-E3/54 remains appropriate for prototyping or non-safety-critical subsystems.
How does the bidirectional design of the 1.5KE6.8C-E3/54 affect PCB layout?
The 1.5KE6.8C-E3/54 has no polarity marking and symmetrical terminals, eliminating orientation constraints during placement. PCB layout must maintain equal trace length and impedance to both leads to preserve balanced clamping performance-especially critical in differential signal protection. Avoid asymmetric routing that could induce skew or localized heating during surge events.
What is the maximum operating temperature for the 1.5KE6.8C-E3/54?
The 1.5KE6.8C-E3/54 has a specified operating junction temperature range of -55 °C to +175 °C. This allows deployment in under-hood automotive environments, industrial power supplies, and outdoor telecom enclosures. Derating curves in Figure 2 of Vishay document 88301 show power capability decreases linearly above 25 °C ambient, reaching ~50% at 125 °C case temperature.
Does the 1.5KE6.8C-E3/54 require a heatsink for continuous operation?
No heatsink is required for transient suppression, as the 1.5KE6.8C-E3/54 handles energy in short pulses (≤1 ms). Its steady-state power dissipation is limited to 6.5 W on an infinite heatsink at 75 °C lead temperature (PD rating). In typical applications, thermal management relies on PCB copper area; the device's RθJA of 75 °C/W means 1 W of average dissipation raises junction temperature by 75 °C above ambient.
1.5KE6.8C-E3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 5.5V
- Voltage - Breakdown (Min):
- 6.12V
- Voltage - Clamping (Max) @ Ipp:
- 10.8V
- Current - Peak Pulse (10/1000µs):
- 139A
- 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
1.5KE6.8C-E3/54 FAQ
1.How can I place an order for 1.5KE6.8C-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE6.8C-E3/54 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 1.5KE6.8C-E3/54 reliable?
The price and inventory of 1.5KE6.8C-E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE6.8C-E3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE6.8C-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE6.8C-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE6.8C-E3/54?
1.5KE6.8C-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE6.8C-E3/54 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 1.5KE6.8C-E3/54?
For technical support, including 1.5KE6.8C-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE6.8C-E3/54 requirements.
6.How does Aetrix verify that 1.5KE6.8C-E3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE6.8C-E3/54 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 1.5KE6.8C-E3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE6.8C-E3/54?
All 1.5KE6.8C-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE6.8C-E3/54, 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 1.5KE6.8C-E3/54 part is unused and in its original packaging.
Return procedure for 1.5KE6.8C-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE6.8C-E3/54 Tags
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