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Vishay General Semiconductor - Diodes Division 1.5KE68CA-E3/54
- Part No.:
- 1.5KE68CA-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE68CA-E3/54.pdf
- Description:
- TVS DIODE 58.1VWM 92VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:3,753
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Product details
Overview
1.5KE68CA-E3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for high-energy surge protection in power and signal lines. It features a 64.6 V to 71.4 V breakdown voltage (VBR), 58.1 V standoff voltage (VWM), 92.0 V clamping voltage (VC) at 16.3 A peak pulse current, and 1500 W peak pulse power capability with a 10/1000 µs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the 1.5KE68CA-E3/54 datasheet, 1.5KE68CA-E3/54 pinout, 1.5KE68CA-E3/54 application, or 1.5KE68CA-E3/54 equivalent, this device delivers verified bidirectional clamping performance, AEC-Q101 qualification eligibility (via HE3 suffix variants), RoHS-compliant matte tin leads, and UL 94 V-0 molded epoxy packaging - critical for ESD and lightning transient hardening in harsh environments.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector, responding in <1 ns to transients induced by inductive switching or lightning surges. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance, enabling precise clamping without thermal runaway under repetitive 0.01% duty cycle pulses.
The 1.5KE68CA-E3/54 is strictly bidirectional with no polarity marking, unlike unidirectional variants that use a cathode band. Its clamping behavior is symmetric across both polarities, with identical VBR, VWM, and VC specifications in forward and reverse directions - confirmed per JEDEC 1.5KE family characterization tables.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 64.6 V / 71.4 V - defines reliable conduction onset range for bidirectional overvoltage events |
| VWM | 58.1 V - maximum continuous working voltage before leakage exceeds 1 µA |
| VC @ IPPM | 92.0 V @ 16.3 A - clamped voltage during 10/1000 µs surge, limiting downstream stress |
| PPPM | 1500 W - peak transient power dissipation capacity without failure |
| IPPM | 16.3 A - maximum non-repetitive surge current supported at rated waveform |
| TJ max. | +175 °C - enables operation in under-hood automotive and industrial ambient conditions |
| Package | Case Style 1.5KE - axial-leaded DO-201AD package, 0.375" lead length, UL 94 V-0 compliant |
Pinout & Package
1.5KE68CA-E3/54 uses the standard DO-201AD axial package (Case Style 1.5KE), with two unmarked leads - no cathode band, confirming its bidirectional construction. Leads are matte tin plated, solderable per J-STD-002 and JESD 22-B102, and rated for 275 °C dip soldering (10 s max).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional surge path | Either terminal serves as anode or cathode depending on transient polarity - no fixed polarity assignment |
| Lead 1 / Lead 2 | PCB termination points | Leads connect directly to protected line and ground/reference; no internal asymmetry or control logic |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures ±5% VBR tolerance and long-term stability under thermal cycling |
| 1500 W peak pulse power (10/1000 µs) | Withstands high-energy transients common in automotive load-dump and industrial motor switching |
| Sub-nanosecond response time | Clamps within 1 ns - faster than MOVs or polymer-based protectors, preserving signal integrity |
| UL 94 V-0 molded epoxy body | Provides flame-retardant mechanical encapsulation suitable for safety-critical end equipment |
| RoHS-compliant matte tin plating | Enables lead-free reflow compatibility and eliminates whisker risk per JESD 201 Class 1A |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from ISO 7637-2 pulse 1/2a/5a transients in vehicle ECUs. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed between signal line and chassis ground, clamping spikes before they reach sensitive input stages. Use Value: Limits voltage to ≤92.0 V during 16.3 A surges, preventing latch-up or gate oxide damage in 3.3 V/5 V interface ICs. | Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to inductive kickback from solenoid valves and contactors. IC Role / Device Role / Timing Role: Parallel-connected TVS on 24 V DC input lines, diverting energy from relay coil de-energization events. Use Value: Absorbs 1500 W transient bursts without degradation, maintaining >10⁵ surge cycles per MIL-STD-883H Method 3015.8. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Secondary-side surge protection on Ethernet PHY power rails and RS-485 data lines in outdoor telecom nodes. IC Role / Device Role / Timing Role: Bidirectional clamp across VCC-GND or differential data pairs, suppressing EFT/burst noise and lightning-induced surges. Use Value: Symmetric clamping ensures equal protection for positive/negative transients, eliminating need for dual unidirectional devices. | Use Scenario: Input-stage protection on AC-DC adapter primary-side rectifier outputs against mains-borne surges (IEC 61000-4-5 Level 3). IC Role / Device Role / Timing Role: Standoff-rated TVS placed after bridge rectifier but before bulk capacitor, clamping line-to-line or line-to-ground spikes. Use Value: 58.1 V VWM allows safe operation with 48–56 V DC bus voltages while triggering only during overvoltage faults. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64CA | Lower PPPM (600 W), smaller SMB package (surface-mount), 64 V nominal VBR | Designed for PCB space-constrained designs; lacks axial lead robustness for high-current chassis grounding | Select when board area is limited and surge energy does not exceed 600 W |
| 1.5KE68A-E3/54 | Unidirectional variant; includes cathode band marking; same VBR/VC/PPPM specs but asymmetric conduction | Required where DC bias exists and only negative-going transients must be suppressed | Choose only if circuit topology mandates polarity-specific clamping |
Compared with SMBJ64CA and 1.5KE68A-E3/54, the 1.5KE68CA-E3/54 uniquely combines 1500 W surge handling, axial-leaded mechanical ruggedness, and true bidirectional symmetry - making it optimal for legacy through-hole designs requiring high-energy, polarity-agnostic protection without layout redesign.
Availability
1.5KE68CA-E3/54 is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC manufacturing, and telecom infrastructure projects requiring stable component supply and long-term obsolescence management.
Supply support for 1.5KE68CA-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, MOSFETs, and protection devices with emphasis on reliability and automotive-grade qualification.
The 1.5KE series was engineered specifically for high-power transient suppression in demanding environments - targeting applications where 1500 W pulse handling, sub-ns response, and AEC-Q101 readiness are mandatory.
FAQ
What is the clamping voltage of the 1.5KE68CA-E3/54 under a 10/1000 µs surge?
The 1.5KE68CA-E3/54 clamps to 92.0 V at its rated peak pulse current of 16.3 A with a 10/1000 µs waveform. This value is measured per JEDEC test conditions and represents the maximum voltage seen downstream during a standardized transient event - critical for ensuring connected ICs remain within absolute maximum ratings.
Is the 1.5KE68CA-E3/54 RoHS compliant and lead-free compatible?
Yes, the 1.5KE68CA-E3/54 carries the "E3" suffix indicating full RoHS compliance and matte tin-plated leads qualified for lead-free reflow soldering per J-STD-002. It also passes JESD 201 Class 1A whisker testing, making it suitable for high-reliability commercial and industrial assemblies.
Does the 1.5KE68CA-E3/54 have AEC-Q101 qualification?
The base 1.5KE68CA-E3/54 is commercial-grade; however, the AEC-Q101-qualified version is designated as 1.5KE68CAHE3_B (with "HE3" and revision code). That variant shares identical electrical specs but adds automotive stress testing - so 1.5KE68CA-E3/54 itself is not AEC-Q101 certified unless ordered with the HE3 suffix.
How does the 1.5KE68CA-E3/54 differ from unidirectional 1.5KE68A-E3/54?
The 1.5KE68CA-E3/54 is bidirectional with no polarity marking and symmetric VBR/VC in both directions, whereas 1.5KE68A-E3/54 is unidirectional with a cathode band and conducts only in reverse bias. Their clamping curves and surge ratings are otherwise identical - the "CA" suffix explicitly denotes bidirectional functionality per Vishay's naming convention.
What is the thermal resistance and maximum junction temperature of the 1.5KE68CA-E3/54?
The 1.5KE68CA-E3/54 has a typical junction-to-lead thermal resistance (RθJL) of 15.4 °C/W and a maximum operating junction temperature of +175 °C. These values enable reliable operation in high-ambient environments like engine compartments or enclosed industrial enclosures when mounted with adequate copper pour or heatsinking.
1.5KE68CA-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):
- 58.1V
- Voltage - Breakdown (Min):
- 64.6V
- Voltage - Clamping (Max) @ Ipp:
- 92V
- Current - Peak Pulse (10/1000µs):
- 16.3A
- 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
1.5KE68CA-E3/54 FAQ
1.How can I place an order for 1.5KE68CA-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE68CA-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 1.5KE68CA-E3/54 reliable?
The price and inventory of 1.5KE68CA-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 1.5KE68CA-E3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE68CA-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE68CA-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE68CA-E3/54?
1.5KE68CA-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE68CA-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 1.5KE68CA-E3/54?
For technical support, including 1.5KE68CA-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE68CA-E3/54 requirements.
6.How does Aetrix verify that 1.5KE68CA-E3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE68CA-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 1.5KE68CA-E3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE68CA-E3/54?
All 1.5KE68CA-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE68CA-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 1.5KE68CA-E3/54 part is unused and in its original packaging.
Return procedure for 1.5KE68CA-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE68CA-E3/54 Tags
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