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Vishay General Semiconductor - Diodes Division 1.5KE68C-E3/54
- Part No.:
- 1.5KE68C-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE68C-E3/54.pdf
- Description:
- TVS DIODE 55.1VWM 98VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:8,233
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Product details
Overview
1.5KE68C-E3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for clamping voltage transients on power and signal lines. It features a 64.6 V to 71.4 V breakdown voltage (VBR) at 1 mA, 58.1 V standoff voltage (VWM), 92.0 V maximum clamping voltage (VC) at 16.3 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - used in automotive sensor protection and industrial I/O interface surge hardening.
For engineers reviewing the 1.5KE68C-E3/54 datasheet, 1.5KE68C-E3/54 pinout, 1.5KE68C-E3/54 application, or 1.5KE68C-E3/54 equivalent, this page delivers verified electrical parameters, JEDEC 1.5KE package details, bidirectional clamping behavior, thermal derating curves, and AEC-Q101-qualified alternatives - all critical for ESD/lightning transient design validation and BOM selection.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical VBR, VWM, and VC specifications in forward and reverse directions. Its glass-passivated junction enables sub-nanosecond response time (<1 ns), low incremental surge resistance, and stable clamping under repetitive 10/1000 µs transients at 0.01% duty cycle.
The device complies with UL 497B for protector classification and meets JESD 22-B106 solderability (275 °C, 10 s). Thermal resistance is 15.4 °C/W (junction-to-lead), enabling effective heat dissipation in PCB-mounted applications without heatsinking up to 6.5 W continuous power at TL = 75 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 64.6 V / 71.4 V at 1 mA - defines precise voltage threshold where clamping initiates reliably across production lot |
| VWM | 58.1 V - maximum continuous working voltage before leakage exceeds 1 µA, ensuring no false triggering during normal operation |
| VC @ IPPM | 92.0 V at 16.3 A - clamped voltage seen by protected circuit during full 1500 W transient, limiting stress on downstream ICs |
| PPPM | 1500 W - peak pulse power handling with 10/1000 µs waveform, supporting lightning surge immunity per IEC 61000-4-5 Level 3 |
| IPPM | 16.3 A - peak pulse current capability directly tied to VC and PPPM, used to size series impedance in protection networks |
| TJ range | –55 °C to +175 °C - extended junction temperature range supports under-hood automotive and industrial ambient conditions |
| Package | JEDEC DO-201AD (Case Style 1.5KE) - axial-leaded, epoxy-molded package with UL 94 V-0 flammability rating and matte tin-plated leads |
Pinout & Package
1.5KE68C-E3/54 uses the JEDEC DO-201AD axial package (Case Style 1.5KE), with no polarity marking - consistent with bidirectional functionality. Leads are matte tin-plated, solderable per J-STD-002 and JESD 22-B102, and qualified to JESD 201 Class 1A whisker test (E3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (unmarked) | Bidirectional terminal pair | Identical clamping behavior in both directions; no cathode band - installed without orientation constraint |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables <1 ns response time and stable VBR over lifetime, critical for protecting fast-switching MOSFET gates |
| 1500 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 surge testing up to 1 kV open-circuit / 500 A short-circuit with appropriate source impedance |
| Low incremental clamping voltage (ΔVC = 27.4 V) | Minimizes overvoltage margin between VWM and VC, reducing stress on 60 V-rated components like CAN transceivers |
| AEC-Q101 qualified option available | Validated for automotive under-hood use (e.g., 1.5KE68CAHE3_B), including temperature cycling, HTRB, and surge endurance |
| UL 497B recognized (QVGQ2) | Meets safety requirements for telecom and industrial signal line protectors, simplifying system-level certification |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Protecting LIN/CAN bus nodes and temperature/pressure sensors exposed to load dump and ISO 7637-2 pulses in engine control units. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across differential signal pair or supply rail to shunt transients before reaching MCU analog front-end. Use Value: Clamps 10/1000 µs surges to ≤92.0 V while maintaining 58.1 V operating margin - compatible with 5 V and 12 V sensor supply domains. |
Use Scenario: Safeguarding 4–20 mA current loop inputs and ±10 V analog inputs in programmable logic controllers against field wiring-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on input terminals, coordinated with series current-limiting resistors and filtering capacitors. Use Value: Withstands 1500 W pulses without degradation, enabling compliance with IEC 61000-4-4 (EFT) and IEC 61000-4-5 (surge) immunity standards. |
| Telecom Line Interface Protection | Consumer Power Adapter ESD Hardening |
Use Scenario: Shielding Ethernet PHY magnetics and DSL line drivers from induced lightning surges on outdoor copper lines per R.E.A. P.E. 60. IC Role / Device Role / Timing Role: First-stage transient suppressor mounted at connector entry point, upstream of GDT or polymer PTC secondary protection. Use Value: Sub-nanosecond response ensures clamping occurs before secondary protectors activate, preventing voltage overshoot into sensitive PHY ICs. |
Use Scenario: Reinforcing USB-C and barrel jack input stages in AC/DC adapters against user-handling ESD (IEC 61000-4-2 ±8 kV contact). IC Role / Device Role / Timing Role: Low-capacitance (typ. <100 pF) bidirectional clamp across DC input rails to suppress fast-rising ESD events. Use Value: 92.0 V clamping voltage prevents latch-up in 65 V-rated primary-side controllers while maintaining >10 V margin above 75 V max input. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64CA | DO-214AA package (SMB), 64 V VWM, 1000 W PPPM, lower IPPM (10.6 A), higher capacitance (~200 pF) | Better suited for space-constrained PCBs but limited to lower surge energy; not rated for 1500 W level tests | Select when board area is constrained and surge requirements are ≤1 kV/500 A; verify layout thermal relief for SMB footprint |
| 1.5KE68CAHE3_B | Same 1.5KE package and electrical specs, but AEC-Q101 qualified, with enhanced HTRB and surge endurance validation | Required for automotive OEM designs needing component-level qualification beyond commercial grade | Choose for automotive applications requiring documented reliability data and extended temperature cycling compliance |
Compared with 1.5KE68C-E3/54, SMBJ64CA trades peak power and thermal robustness for compactness, while 1.5KE68CAHE3_B adds automotive qualification without altering clamping performance - enabling direct substitution where AEC-Q101 is mandated.
Availability
1.5KE68C-E3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC analog inputs, telecom line protection, and consumer power adapter ESD hardening requiring stable component supply and RoHS-compliant sourcing.
Supply support for 1.5KE68C-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 industry-standard qualification.
The 1.5KE family was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where 1500 W surge immunity and long-term stability are mandatory.
FAQ
What is the breakdown voltage tolerance for 1.5KE68C-E3/54?
The 1.5KE68C-E3/54 has a specified breakdown voltage (VBR) range of 64.6 V to 71.4 V at 1 mA test current, representing ±5% tolerance around the nominal 68 V rating. This tight distribution ensures predictable clamping onset across production lots and supports reliable coordination with downstream overvoltage protection thresholds in system design.
Is 1.5KE68C-E3/54 unidirectional or bidirectional?
1.5KE68C-E3/54 is a bidirectional TVS diode, indicated by the "C" suffix per Vishay's naming convention. It provides symmetrical clamping in both polarities with identical VBR, VWM, and VC values - confirmed in the datasheet's "DEVICES FOR BIDIRECTION APPLICATIONS" section and electrical characteristics table.
What does the "E3/54" suffix mean in 1.5KE68C-E3/54?
The "E3" denotes RoHS-compliant, commercial-grade construction with JESD 201 Class 1A whisker resistance; "/54" specifies the packaging format: 13-inch paper tape and reel containing 1400 units. This ordering code aligns with Vishay's standard delivery mode for axial-leaded 1.5KE devices and confirms lead finish, environmental compliance, and reel quantity.
Can 1.5KE68C-E3/54 be used in automotive applications?
Yes - the base 1.5KE68C-E3/54 is commercial grade, but its AEC-Q101-qualified variant 1.5KE68CAHE3_B is explicitly validated for automotive use. While 1.5KE68C-E3/54 shares identical electrical specs and thermal ratings, automotive deployment requires the HE3_B version to meet required stress test protocols including temperature cycling, HTRB, and surge endurance per AEC-Q101 Rev D.
What is the maximum clamping voltage of 1.5KE68C-E3/54 under surge conditions?
The maximum clamping voltage (VC) of 1.5KE68C-E3/54 is 92.0 V at 16.3 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured per JEDEC standards and represents the highest voltage imposed on protected circuitry during worst-case transient events - critical for verifying safe operating margins of downstream 60 V or 75 V rated components.
1.5KE68C-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):
- 55.1V
- Voltage - Breakdown (Min):
- 61.2V
- Voltage - Clamping (Max) @ Ipp:
- 98V
- Current - Peak Pulse (10/1000µs):
- 15.3A
- 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
1.5KE68C-E3/54 FAQ
1.How can I place an order for 1.5KE68C-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE68C-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 1.5KE68C-E3/54 reliable?
The price and inventory of 1.5KE68C-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 1.5KE68C-E3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE68C-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE68C-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE68C-E3/54?
1.5KE68C-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE68C-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 1.5KE68C-E3/54?
For technical support, including 1.5KE68C-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE68C-E3/54 requirements.
6.How does Aetrix verify that 1.5KE68C-E3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE68C-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 1.5KE68C-E3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE68C-E3/54?
All 1.5KE68C-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE68C-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 1.5KE68C-E3/54 part is unused and in its original packaging.
Return procedure for 1.5KE68C-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE68C-E3/54 Tags
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