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Vishay General Semiconductor - Diodes Division 1.5KE68C-E3/73
- Part No.:
- 1.5KE68C-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE68C-E3/73.pdf
- Description:
- TVS DIODE 55.1VWM 98VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:4,927
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Product details
Overview
1.5KE68C-E3/73 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 64.6 V to 71.4 V breakdown voltage (VBR) at 1 mA, 58.1 V maximum standoff voltage (VWM), 92.0 V clamping voltage (VC) at 16.3 A peak pulse current, 1500 W peak pulse power rating with 10/1000 µs waveform, and operates across -55 °C to +175 °C junction temperature range.
For engineers reviewing the 1.5KE68C-E3/73 datasheet, 1.5KE68C-E3/73 pinout, 1.5KE68C-E3/73 application, or 1.5KE68C-E3/73 equivalent, this device serves as a robust overvoltage protection component in automotive sensor interfaces, industrial I/O lines, telecom surge protection circuits, and DC power rail transient suppression where fast response (<1 ns), low clamping ratio, and AEC-Q101-qualified reliability are required.
Technical Context
This bidirectional TVS diode uses a glass-passivated silicon junction optimized for high-energy transient absorption without degradation under repetitive surges. Its clamping behavior is symmetrical in both directions, with a typical temperature coefficient of VBR at 0.104 %/°C and incremental surge resistance derived from 92.0 V clamping at 16.3 A.
The device complies with JEDEC standards for unidirectional/bidirectional transient suppressors and meets UL 94 V-0 flammability requirements via its molded epoxy case. It supports soldering per J-STD-002 and JESD 22-B102, with matte tin-plated leads qualified to JESD 201 Class 1A whisker test (E3 suffix).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 64.6 V / 71.4 V at 1 mA - defines reliable conduction onset threshold for bidirectional clamping |
| VWM | 58.1 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | 92.0 V at 16.3 A - peak clamped voltage during 10/1000 µs surge, limiting downstream stress |
| PPPM | 1500 W - peak transient power handling capability under standardized 10/1000 µs waveform |
| Junction Temp Range | -55 °C to +175 °C - enables deployment in 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 rated epoxy body |
| Leakage @ VWM | 1.0 µA - ensures minimal standby power loss and signal integrity in high-impedance circuits |
Pinout & Package
Package: DO-201AD (Case Style 1.5KE), axial-leaded, molded epoxy body meeting UL 94 V-0; leads are matte tin-plated, solderable per J-STD-002 and JESD 22-B102; no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional transient conduction path | No functional distinction between terminals; either lead connects to protected line or ground depending on circuit topology |
| Lead 1 / Lead 2 | Current-carrying terminal | Both leads conduct identically during positive or negative transients; thermal path to ambient via leads (RθJL = 15.4 °C/W) |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure |
| 1500 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-to-ground) in properly designed PCB layouts |
| Sub-nanosecond response time | Clamps transients within ~1 ns, protecting sensitive ICs before damage thresholds are exceeded |
| AEC-Q101 qualified option available | Validated for automotive applications including engine control modules and ADAS sensor interfaces |
| RoHS-compliant E3 suffix | Meets JESD 201 Class 1A whisker resistance, ensuring solder joint integrity in vibration-prone systems |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across differential signal pair or supply-to-ground, absorbing energy before it reaches front-end amplifiers or communication ICs. Use Value: Limits transient voltage to ≤92.0 V during 16.3 A surges, preventing latch-up or gate oxide rupture in 5 V/12 V automotive electronics. | Use Scenario: Shielding digital input modules in programmable logic controllers from field-induced surges on 24 V DC sensor lines in factory automation. IC Role / Device Role / Timing Role: Standoff voltage (58.1 V) exceeds nominal 24 V rail while clamping fast transients (<1 ns) to safe levels before microcontroller GPIO pins. Use Value: Maintains system uptime by surviving repeated 1 kV/500 A surges per IEC 61000-4-4, with no parameter drift after 1000+ events. |
| Telecom Line Surge Protection | DC Power Rail Clamping |
Use Scenario: Safeguarding Ethernet PHY interfaces and RS-485 transceivers against lightning-induced surges on outdoor cabling in base station equipment. IC Role / Device Role / Timing Role: Placed in parallel with data lines (e.g., TX+/TX−), conducting bidirectionally to shunt surge current to chassis ground. Use Value: Achieves <1 ns response and 92.0 V clamping, keeping differential voltage within ±10 V tolerance of ISO/IEC 8802-3 physical layer specs. | Use Scenario: Suppressing switch-mode power supply turn-off spikes and motor drive back-EMF on 48 V DC distribution rails in robotics and UPS systems. IC Role / Device Role / Timing Role: Connected between rail and ground to clamp overshoot exceeding 58.1 V, diverting up to 16.3 A transient current away from regulators and FETs. Use Value: Prevents overvoltage shutdown or catastrophic failure in buck converters by limiting rail excursions to ≤92.0 V during 1500 W pulses. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64CA | DO-214AA package (SMB), lower 600 W PPPM, 64 V VBR min, 104 V VC @ 5.8 A | Lower power handling; suited for space-constrained PCBs where 1500 W margin is not required | Select SMBJ64CA when board area is limited and peak surge energy is ≤600 W; verify layout thermal relief for SMB footprint. |
| 1.5SMC68CA | DO-214AB package (SMC), same 1500 W rating, 64.6–71.4 V VBR, 105 V VC @ 14.3 A | Surface-mount alternative with higher clamping voltage; requires rework of through-hole layout | Choose 1.5SMC68CA for automated SMT assembly; confirm VC margin allows downstream IC survival at 105 V. |
Compared with 1.5KE68C-E3/73, SMBJ64CA offers smaller footprint but reduced surge capacity, while 1.5SMC68CA matches power rating but increases clamping voltage by 13 V and mandates SMT redesign-neither is pin-compatible due to differing packages and lead configurations.
Availability
1.5KE68C-E3/73 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, telecom line surge suppression, and DC power rail clamping requiring stable component supply across extended temperature ranges and high-reliability production cycles.
Supply support for 1.5KE68C-E3/73 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, efficiency, and application-specific validation.
The 1.5KE series was engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where robustness against lightning, ESD, and inductive switching surges is critical.
FAQ
What is the breakdown voltage range of the 1.5KE68C-E3/73?
The 1.5KE68C-E3/73 has a guaranteed breakdown voltage (VBR) range of 64.6 V to 71.4 V measured at 1 mA test current. This specification ensures consistent clamping initiation across manufacturing lots and temperature extremes from -55 °C to +175 °C. The 1.5KE68C-E3/73 maintains this tolerance under JEDEC-standard test conditions and is validated for bidirectional operation with identical characteristics in both polarities.
Is the 1.5KE68C-E3/73 suitable for automotive applications?
Yes, the 1.5KE68C-E3/73 is RoHS-compliant and available in AEC-Q101-qualified variants (e.g., 1.5KE68CAHE3_B). While the E3/73 suffix denotes commercial-grade qualification, its construction-including glass-passivated junction, UL 94 V-0 epoxy body, and 175 °C max junction temperature-supports under-hood deployment. For certified automotive use, specify the HE3 variant; the 1.5KE68C-E3/73 itself is widely deployed in non-safety-critical automotive subsystems such as body control modules and infotainment power rails.
What is the clamping voltage of the 1.5KE68C-E3/73 at its rated peak pulse current?
The 1.5KE68C-E3/73 exhibits a maximum clamping voltage (VC) of 92.0 V at its rated peak pulse current (IPPM) of 16.3 A, tested with a 10/1000 µs waveform. This value represents the upper limit of voltage imposed on protected circuitry during worst-case surge events. The clamping ratio (VC/VBR) is approximately 1.36, confirming effective transient suppression performance for 1.5KE68C-E3/73 in high-speed interface and power rail protection roles.
Does the 1.5KE68C-E3/73 have polarity markings?
No, the 1.5KE68C-E3/73 does not have polarity markings because it is a bidirectional TVS diode. Unlike unidirectional types that feature a cathode band, this device functions identically regardless of terminal orientation-both leads serve as symmetrical conduction paths during positive or negative transients. This simplifies placement in AC-coupled or differential signal protection schemes and eliminates risk of reverse installation error for the 1.5KE68C-E3/73.
What is the thermal resistance from junction to lead for the 1.5KE68C-E3/73?
The 1.5KE68C-E3/73 has a typical thermal resistance from junction to lead (RθJL) of 15.4 °C/W, measured with 0.375" (9.5 mm) lead length. This parameter governs heat dissipation during repetitive surge events and determines safe duty cycle limits in high-frequency transient environments. Combined with its 6.5 W steady-state power dissipation rating, RθJL enables reliable operation in thermally constrained enclosures when leads are adequately routed to copper planes or heatsinks for the 1.5KE68C-E3/73.
1.5KE68C-E3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- 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-E3/73 FAQ
1.How can I place an order for 1.5KE68C-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE68C-E3/73 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-E3/73 reliable?
The price and inventory of 1.5KE68C-E3/73 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-E3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KE68C-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE68C-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE68C-E3/73?
1.5KE68C-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE68C-E3/73 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-E3/73?
For technical support, including 1.5KE68C-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE68C-E3/73 requirements.
6.How does Aetrix verify that 1.5KE68C-E3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE68C-E3/73 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-E3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE68C-E3/73?
All 1.5KE68C-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE68C-E3/73, 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-E3/73 part is unused and in its original packaging.
Return procedure for 1.5KE68C-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE68C-E3/73 Tags
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