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Vishay General Semiconductor - Diodes Division 1.5KE8.2HE3/73
- Part No.:
- 1.5KE8.2HE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE8.2HE3/73.pdf
- Description:
- TVS DIODE 6.63VWM 12.5VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:4,860
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Product details
Overview
1.5KE8.2HE3/73 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection in DC power rails and signal lines. It features a 8.2 V breakdown voltage (VBR = 7.79–8.61 V at 10 mA), 7.02 V standoff voltage (VWM), 12.1 V clamping voltage (VC = 12.1 V at 124 A), 1500 W peak pulse power (10/1000 µs), and operates across –55 °C to +175 °C junction temperature. It is used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial power supplies.
For engineers reviewing the 1.5KE8.2HE3/73 datasheet, 1.5KE8.2HE3/73 pinout, 1.5KE8.2HE3/73 application, or 1.5KE8.2HE3/73 equivalent, this part delivers verified transient suppression with AEC-Q101 qualification, RoHS compliance, and JESD 201 Class 2 whisker resistance - critical for high-reliability automotive and industrial designs requiring robust ESD and lightning surge immunity.
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction optimized for fast clamping response (<1 ns) and low incremental surge resistance. Its 1500 W peak pulse power rating is defined under standardized 10/1000 µs waveform conditions with 0.01% duty cycle, and it maintains stable clamping performance up to 175 °C junction temperature.
The device exhibits a 0.065 %/°C temperature coefficient of VBR, enabling predictable voltage drift over temperature, and supports 200 A non-repetitive forward surge current (8.3 ms half-sine). Its thermal resistance is 15.4 °C/W (junction-to-lead), supporting reliable power dissipation in leaded PCB layouts without heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 7.79 V / 8.61 V at 10 mA - defines precise voltage threshold where clamping initiates reliably |
| VWM | 7.02 V - maximum continuous reverse working voltage before leakage exceeds 200 µA |
| VC @ IPPM | 12.1 V at 124 A - clamped voltage during full 1500 W transient, limiting downstream stress |
| PPPM | 1500 W - peak pulse power handling for 10/1000 µs surges, meeting IEC 61000-4-5 Level 4 |
| IFSM | 200 A - surge current capability for 8.3 ms half-sine, protecting against inductive switch-off spikes |
| TJ range | –55 °C to +175 °C - enables operation in under-hood automotive and industrial ambient environments |
| Package | Case Style 1.5KE - axial-leaded DO-201AD package with matte tin-plated leads, UL 94 V-0 compliant epoxy |
Pinout & Package
1.5KE8.2HE3/73 is housed in a DO-201AD (Case Style 1.5KE) axial-leaded package with cathode indicated by a color band. Leads are matte tin-plated, solderable per J-STD-002 and JESD 22-B102, and rated for solder dip at 275 °C max for 10 s.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional clamp configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 5 V rail or sensor input); color band identifies this end |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable, repeatable breakdown characteristics and long-term reliability under repeated surge stress |
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics per stress test requirements |
| JESD 201 Class 2 whisker resistance | Prevents tin whisker growth under thermal cycling, ensuring mechanical and electrical integrity in harsh environments |
| 1500 W 10/1000 µs pulse rating | Provides margin against lightning-induced transients (IEC 61000-4-5) and load dump events in 12 V systems |
| Low clamping ratio (VC/VBR ≈ 1.55) | Minimizes overvoltage exposure to protected ICs while maintaining fast response (<1 ns) |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 5 V and 12 V microcontroller supply rails from load dump and alternator transients in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between rail and ground to clamp positive-going surges before they reach LDOs or MCU pins. Use Value: Limits transient voltage to ≤12.1 V during 124 A surges, preventing latch-up or gate oxide damage in downstream logic. |
Use Scenario: Safeguarding analog front-end inputs of pressure or temperature sensors connected to long cables in factory automation. IC Role / Device Role / Timing Role: TVS mounted at connector entry point to shunt induced ESD and switching noise from motor drives or solenoids. Use Value: Responds in <1 ns to suppress 8 kV contact ESD (IEC 61000-4-2) and 1 kV burst noise (IEC 61000-4-4) without signal distortion. |
| Consumer Power Adapter Output Protection | Telecom Line Card Surge Suppression |
Use Scenario: Secondary-side overvoltage protection on USB-C PD and AC/DC adapter outputs delivering 5–20 V. IC Role / Device Role / Timing Role: Standoff-rated TVS placed after DC-DC converter output to absorb residual flyback spikes and hot-plug transients. Use Value: Withstands 200 A 8.3 ms surges and maintains 7.02 V working voltage, ensuring compatibility with tight-tolerance USB voltage specs. |
Use Scenario: Primary protection on Ethernet PHY or RS-485 transceiver lines exposed to lightning-induced surges in outdoor telecom cabinets. IC Role / Device Role / Timing Role: First-stage TVS on differential pair inputs, coordinated with GDT or MOV secondary protection. Use Value: Clamps 10/1000 µs surges to 12.1 V while exhibiting <200 µA leakage at 7.02 V, preserving signal integrity and bias stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.0A | DO-214AA package (SMB), 8.0 V VBR, 12.0 V VC @ 108 A, 600 W PPPM | Lower power rating and surface-mount format - suited for space-constrained PCBs but not direct replacement for 1500 W demands | Select when board area is limited and surge energy is ≤600 W; requires layout redesign due to SMD footprint and thermal path differences |
| 1.5KE8.2A-E3/54 | Same 1.5KE package and electrical specs, but commercial-grade (non-AEC-Q101) and JESD 201 Class 1A whisker rating | Lacks automotive qualification - acceptable for industrial or consumer use where AEC-Q101 is not mandated | Choose for cost-sensitive non-automotive applications; identical pinout and clamping behavior, but not approved for automotive under-hood deployment |
Compared with SMBJ8.0A, 1.5KE8.2HE3/73 delivers 2.5× higher pulse power and proven under-hood reliability; compared with 1.5KE8.2A-E3/54, it adds AEC-Q101 validation and enhanced whisker resistance - essential for automotive OEM production and extended-temperature industrial deployments.
Availability
1.5KE8.2HE3/73 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom line card surge suppression requiring stable component supply across multi-year production cycles.
Supply support for 1.5KE8.2HE3/73 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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The 1.5KE series was engineered specifically for high-energy transient suppression in demanding environments - emphasizing AEC-Q101 qualification, robust thermal performance, and consistent clamping under repetitive surge stress.
FAQ
What is the breakdown voltage tolerance of the 1.5KE8.2HE3/73?
The 1.5KE8.2HE3/73 has a specified breakdown voltage range of 7.79 V to 8.61 V at 10 mA test current, representing ±5.5% tolerance around the nominal 8.2 V rating. This tight VBR window ensures consistent clamping onset across production lots and temperature extremes, critical for protecting voltage-sensitive ICs without premature conduction.
Is the 1.5KE8.2HE3/73 suitable for bidirectional transient protection?
No, the 1.5KE8.2HE3/73 is a unidirectional TVS diode - its cathode band indicates polarity, and it conducts only during positive transients on the cathode side. For bidirectional protection, Vishay offers the 1.5KE8.2CA variant; using 1.5KE8.2HE3/73 in AC or floating applications would leave negative-going transients unprotected.
Does the 1.5KE8.2HE3/73 meet automotive qualification standards?
Yes, the 1.5KE8.2HE3/73 is AEC-Q101 qualified and manufactured with JESD 201 Class 2 whisker resistance, making it suitable for automotive applications including engine control, body electronics, and ADAS power domains. The "HE3" suffix explicitly denotes this qualification level per Vishay's ordering nomenclature.
What is the maximum clamping voltage of the 1.5KE8.2HE3/73 under surge conditions?
The 1.5KE8.2HE3/73 clamps to a maximum of 12.1 V at its rated peak pulse current of 124 A (10/1000 µs waveform). This VC value is guaranteed across temperature and lifetime, providing a known upper bound for protected circuit voltage stress during transient events such as ISO 7637-2 pulse 1 or 5a.
How does the thermal performance of the 1.5KE8.2HE3/73 compare to SMD TVS devices?
The 1.5KE8.2HE3/73 has a junction-to-lead thermal resistance (RθJL) of 15.4 °C/W, significantly lower than typical SMD TVS packages (e.g., SMBJ: ~45 °C/W), enabling superior heat dissipation through axial leads into PCB copper. This allows sustained surge handling without thermal runaway - especially advantageous in high-ambient-temperature automotive or industrial enclosures.
1.5KE8.2HE3/73 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 6.63V
- Voltage - Breakdown (Min):
- 7.38V
- Voltage - Clamping (Max) @ Ipp:
- 12.5V
- Current - Peak Pulse (10/1000µs):
- 120A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE8.2HE3/73 FAQ
1.How can I place an order for 1.5KE8.2HE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE8.2HE3/73 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 1.5KE8.2HE3/73 reliable?
The price and inventory of 1.5KE8.2HE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE8.2HE3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KE8.2HE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE8.2HE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE8.2HE3/73?
1.5KE8.2HE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE8.2HE3/73 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 1.5KE8.2HE3/73?
For technical support, including 1.5KE8.2HE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE8.2HE3/73 requirements.
6.How does Aetrix verify that 1.5KE8.2HE3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE8.2HE3/73 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 1.5KE8.2HE3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE8.2HE3/73?
All 1.5KE8.2HE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE8.2HE3/73, 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 1.5KE8.2HE3/73 part is unused and in its original packaging.
Return procedure for 1.5KE8.2HE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE8.2HE3/73 Tags
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