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Vishay General Semiconductor - Diodes Division 1.5KE6.8A-E3/73
- Part No.:
- 1.5KE6.8A-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE6.8A-E3/73.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:9,386
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Product details
Overview
1.5KE6.8A-E3/73 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection on DC power rails and signal lines. It features a 6.45 V to 7.14 V breakdown voltage (VBR) at 10 mA, 5.80 V maximum working peak reverse voltage (VWM), 1000 µA maximum reverse leakage at VWM, 1500 W peak pulse power (10/1000 µs), and clamps transients to ≤10.5 V at 143 A peak pulse current - deployed in automotive ECUs and industrial sensor interfaces.
For engineers reviewing the 1.5KE6.8A-E3/73 datasheet, 1.5KE6.8A-E3/73 pinout, 1.5KE6.8A-E3/73 application, or 1.5KE6.8A-E3/73 equivalent, this page delivers verified electrical specs, JEDEC 1.5KE package details, clamping performance under lightning surge conditions, thermal derating curves, and RoHS-compliant commercial-grade sourcing guidance.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: when transient voltage exceeds its breakdown threshold, it avalanches rapidly (<1 ns response) to divert surge current away from downstream ICs. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance, critical for repeatable clamping across 10/1000 µs waveforms.
Rated for -55 °C to +175 °C junction temperature, it supports high-reliability deployment in engine bay electronics and industrial motor drives. The 1.5KE case style provides 75 °C/W junction-to-ambient thermal resistance and accommodates 200 A non-repetitive forward surge (8.3 ms half-sine), enabling robust protection against inductive switching spikes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.45 V / 7.14 V at 10 mA - defines precise avalanche initiation window for predictable clamping onset |
| VWM | 5.80 V - maximum continuous reverse operating voltage before leakage rises significantly |
| IPPM | 143 A - peak surge current it safely clamps at 10.5 V under 10/1000 µs waveform |
| PPPM | 1500 W - peak pulse power handling capacity for transient suppression without failure |
| IR @ VWM | 1000 µA - reverse leakage level at rated standoff voltage; low enough to avoid system power drain |
| TJ max | +175 °C - enables operation in under-hood automotive environments and high-temperature industrial enclosures |
| RθJA | 75 °C/W - thermal resistance indicating need for adequate PCB copper pour or heatsinking at high duty cycles |
Pinout & Package
Package: JEDEC 1.5KE molded epoxy case (Case Style 1.5KE), axial-leaded, RoHS-compliant matte tin-plated leads. Dimensions: 5.3 mm × 5.3 mm × 9.5 mm (L × W × H), lead diameter 1.07 mm, lead spacing 9.5 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected circuit; conducts during positive surges only |
| Cathode | Reverse-biased clamping terminal | Marked with color band; connected to higher-potential rail; avalanches during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR over temperature and lifetime, minimizing drift in harsh environments |
| 1500 W peak pulse power (10/1000 µs) | Handles IEC 61000-4-5 Level 4 surges (4 kV line-earth) without degradation |
| Clamping voltage ≤10.5 V at 143 A | Protects 5 V logic ICs and microcontrollers by limiting stress below absolute maximum ratings |
| Response time <1 ns | Acts before most semiconductor damage mechanisms initiate, preserving system integrity |
| AEC-Q101 qualification available (HE3 variant) | Validated for automotive applications including powertrain and body control modules |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 5 V supply rails in engine control units exposed to load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between VCC and GND to clamp positive-going overvoltages. Use Value: Limits voltage excursions to ≤10.5 V, preventing latch-up or gate oxide rupture in MCU and CAN transceivers. | Use Scenario: Safeguarding analog inputs of PLC analog I/O modules connected to 4–20 mA field transmitters. IC Role / Device Role / Timing Role: Front-end transient suppressor on signal conditioning path, upstream of op-amp input stage. Use Value: Absorbs induced lightning surges (per IEC 61000-4-5) while maintaining <1000 µA leakage at 5.8 V, avoiding measurement offset. |
| Consumer Power Adapter Output Protection | Telecom Line Card Surge Protection |
Use Scenario: Secondary-side overvoltage protection in USB-C PD adapters delivering regulated 5 V/9 V/15 V outputs. IC Role / Device Role / Timing Role: Standoff-rated TVS on output rail to suppress switching noise and fault-induced spikes. Use Value: Withstands repetitive 1500 W pulses at 0.01% duty cycle, ensuring long-term reliability without parameter shift. | Use Scenario: Primary protection on Ethernet PHY interface lines subject to telecom lightning surges (GR-1089). IC Role / Device Role / Timing Role: Low-capacitance unidirectional suppressor on DC bias feed to PoE-powered devices. Use Value: Clamps 10/1000 µs surges to <10.5 V while adding negligible capacitance to high-speed data paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.8A | Lower PPPM (600 W), smaller SMB package (3.5 mm × 4.5 mm), lower IPPM (65 A), same VBR range | Better suited for space-constrained PCBs; insufficient for 1.5KE6.8A-E3/73's 1500 W surge requirement | Select SMBJ6.8A only if system-level testing confirms 600 W clamping meets IEC 61000-4-5 immunity targets. |
| 1.5KE6.8CA | Bidirectional variant; identical VBR/VWM/PPPM, but symmetrical clamping for AC-coupled or floating lines | Required where both polarities of transient must be suppressed (e.g., RS-485 bus, transformer-coupled signals) | Choose 1.5KE6.8CA only when bidirectional protection is mandated; unidirectional 1.5KE6.8A-E3/73 is optimal for DC rails. |
Compared with SMBJ6.8A and 1.5KE6.8CA, the 1.5KE6.8A-E3/73 delivers higher surge robustness in a through-hole package ideal for high-energy industrial and automotive applications, while offering tighter VBR tolerance and proven thermal stability up to +175 °C.
Availability
1.5KE6.8A-E3/73 is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC analog I/O modules, consumer power adapter secondary-side protection, and telecom line card surge hardening requiring stable component supply and full traceability.
Supply support for 1.5KE6.8A-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 and ruggedized performance.
The 1.5KE series was engineered for high-energy transient suppression in demanding environments - targeting automotive, industrial, and telecom systems where failure due to voltage surges is unacceptable.
FAQ
What is the breakdown voltage tolerance of the 1.5KE6.8A-E3/73?
The 1.5KE6.8A-E3/73 has a specified breakdown voltage (VBR) range of 6.45 V to 7.14 V at 10 mA test current, representing a ±5% tolerance around the nominal 6.8 V rating. This tight tolerance ensures consistent clamping behavior across production lots and supports reliable system-level overvoltage margining in designs using the 1.5KE6.8A-E3/73.
Is the 1.5KE6.8A-E3/73 RoHS compliant and lead-free?
Yes, the 1.5KE6.8A-E3/73 is RoHS compliant and lead-free. The "E3" suffix explicitly denotes compliance with EU RoHS Directive 2011/65/EU, and the device uses matte tin-plated leads that meet J-STD-002 and JESD 22-B102 solderability standards. It also passes JESD 201 Class 1A whisker testing, confirming long-term interconnect reliability for the 1.5KE6.8A-E3/73.
Can the 1.5KE6.8A-E3/73 be used in automotive applications?
The standard 1.5KE6.8A-E3/73 is commercial-grade; however, the AEC-Q101 qualified variant 1.5KE6.8AHE3_B is available for automotive use. While the 1.5KE6.8A-E3/73 itself is not AEC-Q101 certified, its -55 °C to +175 °C operating range, glass-passivated junction, and 1500 W surge capability make it suitable for non-safety-critical automotive subsystems when validated per customer requirements - always verify qualification status for the exact 1.5KE6.8A-E3/73 part number before deployment.
What is the clamping voltage of the 1.5KE6.8A-E3/73 at its rated peak pulse current?
At its rated peak pulse current (IPPM) of 143 A (10/1000 µs waveform), the 1.5KE6.8A-E3/73 clamps to a maximum voltage of 10.5 V. This clamping voltage is guaranteed per Vishay's datasheet and defines the upper voltage limit imposed on protected circuitry during worst-case surge events - a critical parameter for ensuring downstream ICs like MCUs and transceivers remain within safe operating limits when using the 1.5KE6.8A-E3/73.
How does the thermal performance of the 1.5KE6.8A-E3/73 affect its surge handling capability?
The 1.5KE6.8A-E3/73 exhibits thermal derating above 25 °C ambient: its peak pulse power drops linearly to ~75% at 100 °C junction temperature per Figure 2 in the datasheet. Its RθJA of 75 °C/W means sustained high-duty-cycle surges require PCB copper thermal relief or forced airflow. For single-event protection (e.g., lightning), thermal mass dominates - but repeated surges demand careful thermal design to maintain clamping integrity in the 1.5KE6.8A-E3/73.
1.5KE6.8A-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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- 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
1.5KE6.8A-E3/73 FAQ
1.How can I place an order for 1.5KE6.8A-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE6.8A-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 1.5KE6.8A-E3/73 reliable?
The price and inventory of 1.5KE6.8A-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 1.5KE6.8A-E3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KE6.8A-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE6.8A-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE6.8A-E3/73?
1.5KE6.8A-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE6.8A-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 1.5KE6.8A-E3/73?
For technical support, including 1.5KE6.8A-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE6.8A-E3/73 requirements.
6.How does Aetrix verify that 1.5KE6.8A-E3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE6.8A-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 1.5KE6.8A-E3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE6.8A-E3/73?
All 1.5KE6.8A-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE6.8A-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 1.5KE6.8A-E3/73 part is unused and in its original packaging.
Return procedure for 1.5KE6.8A-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE6.8A-E3/73 Tags
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