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Vishay General Semiconductor - Diodes Division 1.5KE6.8CA-E3/54
- Part No.:
- 1.5KE6.8CA-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE6.8CA-E3/54.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:870
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Product details
Overview
1.5KE6.8CA-E3/54 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-E3/54 datasheet, 1.5KE6.8CA-E3/54 pinout, 1.5KE6.8CA-E3/54 application, or 1.5KE6.8CA-E3/54 equivalent, this part delivers verified bidirectional surge suppression with RoHS-compliant packaging, AEC-Q101 qualification eligibility (via HE3 variants), and standardized 1.5KE case geometry for legacy PCB compatibility.
Technical Context
This TVS diode uses a glass-passivated silicon junction to achieve sub-nanosecond response time (<1 ns) and low incremental surge resistance. Its bidirectional architecture enables symmetrical clamping on AC-coupled or floating lines without polarity concerns.
Rated for 1500 W peak pulse power under JEDEC-standard 10/1000 µs waveform and derated above 25 °C per Fig. 2, it supports repetitive transients at 0.01 % duty cycle. Thermal resistance is 75 °C/W (junction-to-ambient) and 15.4 °C/W (junction-to-lead), enabling reliable operation without heatsinking in most board-level applications.
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 surge events |
| VWM | 5.80 V - maximum continuous working voltage before leakage exceeds 1000 µA |
| VC @ IPPM | 10.5 V at 143 A - actual clamped voltage during full 1500 W transient, critical for downstream IC survivability |
| PPPM | 1500 W - peak pulse power handling capability under standard 10/1000 µs lightning-surge waveform |
| TJ range | –55 °C to +175 °C - extended thermal envelope supporting under-hood automotive and industrial environments |
| Package | Case Style 1.5KE - axial-leaded DO-201AD package with 0.375" lead length, UL 94 V-0 compliant epoxy body |
| RoHS & Reliability | E3 suffix - RoHS-compliant matte tin plating; JESD 201 Class 1A whisker resistance; AEC-Q101 qualified variants available (HE3) |
Pinout & Package
1.5KE6.8CA-E3/54 uses the standard DO-201AD (Case Style 1.5KE) axial-leaded package. It has no polarity marking - consistent with bidirectional function - and employs matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Lead length is 0.375" (9.5 mm), body diameter 0.210" (5.3 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional conduction path | No cathode band; terminals interchangeable - enables placement flexibility on AC or floating nodes |
| Leads (both) | Thermal and electrical interface | Low RθJL = 15.4 °C/W allows efficient heat transfer to PCB copper; tin plating ensures reliable reflow/soldering |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR tolerance (±5 %) and long-term reliability under humidity and thermal cycling |
| 1500 W peak pulse rating | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth) without degradation when properly mounted |
| <1 ns response time | Clamps transients before sensitive downstream components (e.g., MCU I/O, CAN transceivers) experience overstress |
| Bidirectional symmetry | Equal clamping in both directions eliminates need for polarity-aware layout or external series components |
| UL 94 V-0 molding compound | Meets flame-retardancy requirements for industrial control panels and automotive ECUs without additional conformal coating |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog sensor inputs (e.g., pressure, temperature) in engine control units against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed directly at connector entry point, shunting surge energy to ground before reaching op-amp or ADC front-end. Use Value: Clamps 10.5 V at 143 A ensures downstream circuitry sees <12 V transient, preserving signal integrity and preventing latch-up in 5 V rail systems. |
Use Scenario: Safeguarding 24 V digital input modules in programmable logic controllers exposed to relay coil flyback and ESD events. IC Role / Device Role / Timing Role: Bidirectional TVS placed across input terminals to suppress both positive and negative polarity transients induced by inductive switching. Use Value: Symmetrical 6.45–7.14 V breakdown enables consistent protection regardless of common-mode polarity shift, reducing design validation effort. |
| Telecom Line Interface | Consumer Power Adapter Output |
Use Scenario: Shielding RS-485 transceiver bus lines in outdoor telecom cabinets from lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Secondary-level protection device located after gas discharge tube (GDT), absorbing residual energy and limiting let-through voltage. Use Value: Low clamping voltage (10.5 V) ensures RS-485 receivers (rated to ±12 V) remain within safe operating area during multi-kV surge events. |
Use Scenario: Preventing output overvoltage damage in wall-mounted AC/DC adapters due to regulator failure or feedback loop disruption. IC Role / Device Role / Timing Role: Fail-safe crowbar element across DC output, triggered only during catastrophic overvoltage (>7.14 V), not normal ripple. Use Value: Tight VBR tolerance (6.45–7.14 V) avoids nuisance tripping while guaranteeing activation before 12 V-rated downstream USB-PD or charging ICs are stressed. |
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 (SMB) package; lower PPPM = 600 W; VC = 11.2 V @ 53.3 A | Higher board density but reduced surge margin; suited for space-constrained consumer electronics, not heavy industrial | Select SMBJ6.8CA only if footprint reduction is prioritized over 1500 W surge headroom and thermal robustness. |
| 1.5SMC6.8CA | DO-214AB (SMC) package; same PPPM = 1500 W; VC = 10.5 V @ 143 A; slightly higher VBR min = 6.46 V | Surface-mount alternative with identical electrical performance; requires rework of through-hole layout | Choose 1.5SMC6.8CA for automated SMT assembly where axial-leaded 1.5KE6.8CA-E3/54 is incompatible with production flow. |
Compared with SMBJ6.8CA and 1.5SMC6.8CA, the 1.5KE6.8CA-E3/54 offers superior thermal dissipation via axial leads and proven field reliability in high-energy surge environments, making it preferred for automotive and industrial applications where mechanical robustness and legacy compatibility matter.
Availability
1.5KE6.8CA-E3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, telecom line shielding, and consumer power adapter fail-safe circuits requiring stable component supply and long-lifecycle support.
Supply support for 1.5KE6.8CA-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 high-reliability diodes, MOSFETs, and passive components for demanding industrial and automotive applications.
The 1.5KE family was engineered specifically for high-energy transient suppression in legacy and new designs requiring proven DO-201AD form factor, AEC-Q101 qualification path, and 1500 W surge resilience.
FAQ
What is the exact breakdown voltage range for 1.5KE6.8CA-E3/54?
The 1.5KE6.8CA-E3/54 has a guaranteed breakdown voltage range of 6.45 V to 7.14 V at 10 mA test current, measured per JEDEC standard. This tight VBR window ensures predictable clamping behavior across production lots and temperature extremes, critical for protecting 5 V and 3.3 V logic interfaces without false triggering.
Is 1.5KE6.8CA-E3/54 RoHS compliant and lead-free?
Yes, the E3 suffix on 1.5KE6.8CA-E3/54 certifies full RoHS compliance per EU Directive 2011/65/EU, including lead-free matte tin plating on leads and halogen-free molding compound. It meets JESD 201 Class 1A whisker resistance and is rated for soldering up to 275 °C for 10 seconds.
Does 1.5KE6.8CA-E3/54 have AEC-Q101 qualification?
The base 1.5KE6.8CA-E3/54 is commercial-grade; however, the AEC-Q101-qualified variant is designated 1.5KE6.8CAHE3_B (with "B" revision code). Both share identical electrical specs and package, but the HE3 version undergoes additional stress testing for automotive under-hood use.
What is the clamping voltage of 1.5KE6.8CA-E3/54 under full surge conditions?
At its rated peak pulse current of 143 A (corresponding to 1500 W with 10/1000 µs waveform), the 1.5KE6.8CA-E3/54 clamps to a maximum of 10.5 V. This value is measured and guaranteed per datasheet Fig. 7–10, ensuring downstream 5 V ICs remain within absolute maximum ratings during worst-case transients.
Can 1.5KE6.8CA-E3/54 be used in bidirectional AC signal lines?
Yes - the "CA" suffix explicitly denotes bidirectional construction, meaning 1.5KE6.8CA-E3/54 provides symmetrical clamping in both polarities with identical VBR, VC, and leakage characteristics. It is routinely applied across RS-485 buses, audio differential pairs, and other floating or AC-coupled interfaces.
1.5KE6.8CA-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:
- 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-E3/54 FAQ
1.How can I place an order for 1.5KE6.8CA-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE6.8CA-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 1.5KE6.8CA-E3/54 reliable?
The price and inventory of 1.5KE6.8CA-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 1.5KE6.8CA-E3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE6.8CA-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE6.8CA-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE6.8CA-E3/54?
1.5KE6.8CA-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE6.8CA-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 1.5KE6.8CA-E3/54?
For technical support, including 1.5KE6.8CA-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE6.8CA-E3/54 requirements.
6.How does Aetrix verify that 1.5KE6.8CA-E3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE6.8CA-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 1.5KE6.8CA-E3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE6.8CA-E3/54?
All 1.5KE6.8CA-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE6.8CA-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 1.5KE6.8CA-E3/54 part is unused and in its original packaging.
Return procedure for 1.5KE6.8CA-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE6.8CA-E3/54 Tags
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