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Vishay General Semiconductor - Diodes Division 1.5KA6.8AHE3/73
- Part No.:
- 1.5KA6.8AHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KA6.8AHE3/73.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC 1.5KA
- Quantity:
- Payment:
- Shipping:
Inventory:9,524
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Product details
Overview
1.5KA6.8AHE3/73 from Vishay General Semiconductor is a unidirectional automotive-grade transient voltage suppressor (TVS) diode designed for high-energy surge protection in power and signal lines. It features a 6.45–7.14 V breakdown voltage (VBR), 1500 W peak pulse power (10/1000 µs), 143 A peak pulse current (IPPM), 10.5 V clamping voltage at IPPM, and AEC-Q101 qualification for under-hood automotive electronics.
For engineers reviewing the 1.5KA6.8AHE3/73 datasheet, 1.5KA6.8AHE3/73 pinout, 1.5KA6.8AHE3/73 application, or 1.5KA6.8AHE3/73 equivalent, this device is selected for robust overvoltage protection where high-temperature stability (TJ up to +185 °C), low clamping ratio, and RoHS-compliant HE3 packaging are required in automotive power rails and sensor interfaces.
Technical Context
This TVS diode employs Vishay's patented PAR® construction for stable avalanche performance under repetitive surge stress. Its unidirectional polarity enables DC-biased line protection with fast response (<1 ns) and low dynamic impedance, ensuring effective clamping during load dump or inductive switching transients.
Rated for 185 °C maximum junction temperature and qualified per AEC-Q101, the 1.5KA6.8AHE3/73 supports automotive applications requiring long-term reliability under thermal cycling and high-humidity conditions - validated by JESD22-B102 solderability and JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.45 V / 7.14 V - defines precise avalanche initiation range at 10 mA test current, enabling accurate system-level overvoltage threshold setting |
| VC @ IPPM | 10.5 V - clamping voltage at 143 A peak pulse ensures protected downstream ICs see <10.5 V during 10/1000 µs transients |
| PPPM | 1500 W - peak pulse power rating confirms capability to absorb ISO 7637-2 Pulse 5a (load dump) energy without failure |
| IPPM | 143 A - peak pulse current derived from 1500 W / 10.5 V, directly usable for PCB trace sizing and fuse coordination |
| TJ max. | +185 °C - extended junction temperature rating allows placement near hot engine-control units without derating |
| VWM | 5.80 V - maximum working voltage ensures reliable blocking of 5 V rail noise while allowing margin before breakdown |
| Package | Case Style 1.5KA - axial-leaded DO-201AD package with 0.375" lead length, UL 94 V-0 molded epoxy body |
Pinout & Package
Case Style 1.5KA is an axial-leaded DO-201AD package with matte tin-plated leads. Cathode is marked by a color band on the body. Leads meet J-STD-002 and JESD22-B102 solderability standards; HE3 suffix indicates JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection in unidirectional TVS configuration | Connected to ground or return path; carries full surge current during clamping |
| Cathode | High-side connection; marked by color band | Connected to protected line (e.g., battery rail); avalanche conduction initiates here during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Enables stable, repeatable avalanche characteristics across temperature and lifetime, critical for automotive AEC-Q101 compliance |
| AEC-Q101 qualification | Validated for automotive under-hood use including temperature cycling, humidity bias, and mechanical shock testing |
| 1500 W peak pulse power (10/1000 µs) | Meets ISO 7637-2 Pulse 5a requirements for 12 V systems, supporting robust load-dump protection |
| Low clamping ratio (VC/VBR ≈ 1.47) | Minimizes voltage overshoot during clamping, reducing stress on downstream MOSFETs and microcontrollers |
| HE3 RoHS-compliant packaging | Ensures high-reliability assembly with JESD201 Class 2 whisker resistance and 260 °C solder dip tolerance |
Applications
| Automotive Power Rail Protection | Engine Control Unit (ECU) Sensor Interface |
|---|---|
Use Scenario: Protecting 12 V battery-fed power inputs in body control modules against load dump and jump-start surges. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between battery rail and input filter capacitor to clamp transients before LDOs and MCUs. Use Value: Withstands 1500 W pulses and operates up to +185 °C, enabling direct placement near power entry points without thermal derating. | Use Scenario: Safeguarding analog sensor signal lines (e.g., MAP, TPS) connected to ECU ADC inputs from inductive switching noise. IC Role / Device Role / Timing Role: Low-capacitance TVS placed at connector interface to shunt ESD and fast transients before signal conditioning circuitry. Use Value: Clamps to 10.5 V within nanoseconds, preserving signal integrity while meeting ISO 10605 ESD immunity requirements. |
| Industrial Motor Drive Power Supply | Telecom DC Feeder Line Protection |
Use Scenario: Guarding auxiliary 24 V DC power supplies in PLC I/O modules against relay coil flyback and contact arcing. IC Role / Device Role / Timing Role: Primary surge suppression device on input stage, coordinated with upstream fuses and downstream LC filters. Use Value: 143 A IPPM and 6.5 W steady-state dissipation support continuous operation in industrial enclosures with ambient temperatures up to +105 °C. | Use Scenario: Protecting -48 V telecom DC feeder lines from lightning-induced surges and accidental AC cross-connect events. IC Role / Device Role / Timing Role: Unidirectional TVS installed at power entry board to limit voltage excursion during ITU-T K.20/K.21 transients. Use Value: 185 °C TJ max and UL 94 V-0 housing ensure reliability in sealed, high-density telecom rectifier cabinets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.8AHE3/52 | Same VBR range and PPPM, but SMB package (surface-mount); lower IPPM (104 A) and smaller thermal mass | Better suited for space-constrained PCBs; less suitable for high-temperature through-hole mounting near heat sources | Select when automated assembly and board density outweigh thermal robustness requirements |
| 1.5KE6.8A | Same case style and ratings, but standard grade (not AEC-Q101 qualified); no HE3 whisker resistance or automotive qualification | Limited to commercial/industrial use; not approved for automotive safety-critical subsystems | Select only for non-automotive applications where cost is prioritized over automotive reliability validation |
Compared with SMBJ6.8AHE3/52 and 1.5KE6.8A, the 1.5KA6.8AHE3/73 uniquely combines axial-leaded mechanical robustness, AEC-Q101 qualification, and JESD201 Class 2 whisker resistance - making it the only choice for production automotive power-line protection where vibration, thermal cycling, and long-term solder-joint integrity are design-critical.
Availability
1.5KA6.8AHE3/73 is available at Aetrix Electronics and suitable for automotive power rail protection, engine control unit (ECU) sensor interfaces, and industrial motor drive power supplies requiring stable component supply, long-lifecycle availability, and AEC-Q101-compliant sourcing.
Supply support for 1.5KA6.8AHE3/73 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, TVS devices, and optoelectronics with emphasis on reliability, power handling, and automotive qualification.
The 1.5KA series was engineered specifically for high-energy transient suppression in harsh automotive environments, targeting load-dump protection, sensor interface hardening, and power-rail stabilization under extended temperature and humidity stress.
FAQ
What is the exact breakdown voltage range for the 1.5KA6.8AHE3/73?
The 1.5KA6.8AHE3/73 has a guaranteed breakdown voltage (VBR) range of 6.45 V to 7.14 V at 10 mA test current (IT), measured per ANSI/IEEE C62.35. This tight tolerance ensures predictable clamping onset in 5 V–6 V system rails and supports accurate overvoltage threshold design without additional margining.
Is the 1.5KA6.8AHE3/73 suitable for automotive under-hood applications?
Yes - the 1.5KA6.8AHE3/73 is AEC-Q101 qualified and rated for operation from –65 °C to +185 °C junction temperature. Its PAR® construction, UL 94 V-0 epoxy body, and JESD201 Class 2 whisker resistance make it suitable for under-hood engine control units, battery management systems, and lighting modules exposed to thermal cycling and humidity.
What is the clamping voltage of the 1.5KA6.8AHE3/73 at its rated peak pulse current?
The 1.5KA6.8AHE3/73 clamps to a maximum of 10.5 V at its rated peak pulse current of 143 A (IPPM), measured with a 10/1000 µs waveform. This low VC ensures protected downstream components - such as 5 V LDOs or MCU I/O pins - remain within absolute maximum ratings during surge events.
Does the 1.5KA6.8AHE3/73 have a unidirectional or bidirectional polarity configuration?
The 1.5KA6.8AHE3/73 is unidirectional only, with cathode indicated by a color band. It is intended for DC-biased applications such as battery rails and regulated power supplies. Bidirectional variants (e.g., 1.5KA6.8HE3/73) are separate part numbers and not interchangeable with the 1.5KA6.8AHE3/73.
What package type and lead finish does the 1.5KA6.8AHE3/73 use?
The 1.5KA6.8AHE3/73 uses Case Style 1.5KA - an axial-leaded DO-201AD package with 0.375" (9.5 mm) lead length. Leads are matte tin plated and compliant with J-STD-002 and JESD22-B102 solderability standards; the HE3 suffix confirms JESD201 Class 2 whisker resistance.
1.5KA6.8AHE3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- PAR®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KA
1.5KA6.8AHE3/73 FAQ
1.How can I place an order for 1.5KA6.8AHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KA6.8AHE3/73 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 1.5KA6.8AHE3/73 reliable?
The price and inventory of 1.5KA6.8AHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KA6.8AHE3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KA6.8AHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KA6.8AHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KA6.8AHE3/73?
1.5KA6.8AHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KA6.8AHE3/73 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 1.5KA6.8AHE3/73?
For technical support, including 1.5KA6.8AHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KA6.8AHE3/73 requirements.
6.How does Aetrix verify that 1.5KA6.8AHE3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KA6.8AHE3/73 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 1.5KA6.8AHE3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KA6.8AHE3/73?
All 1.5KA6.8AHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KA6.8AHE3/73, 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 1.5KA6.8AHE3/73 part is unused and in its original packaging.
Return procedure for 1.5KA6.8AHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KA6.8AHE3/73 Tags
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