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Vishay General Semiconductor - Diodes Division 1.5KE82-E3/54
- Part No.:
- 1.5KE82-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE82-E3/54.pdf
- Description:
- TVS DIODE 66.4VWM 118VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:4,316
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Product details
Overview
1.5KE82-E3/54 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 77.9 V to 86.1 V breakdown voltage (VBR) at 1 mA, 70.1 V maximum standoff voltage (VWM), 113 V clamping voltage (VC) at 13.3 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - used to safeguard MOSFETs, ICs, and sensor interfaces against lightning-induced surges and inductive switching transients.
For engineers reviewing the 1.5KE82-E3/54 datasheet, 1.5KE82-E3/54 pinout, 1.5KE82-E3/54 application, or 1.5KE82-E3/54 equivalent, this part delivers verified unidirectional clamping performance, RoHS-compliant matte tin-plated leads, JEDEC-standard 1.5KE package, and AEC-Q101 qualification availability (via HE3 suffix variants) - critical for automotive, industrial power supply, and telecom surge protection design validation.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR, it avalanches into low-impedance conduction to divert surge current away from downstream components. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance (<0.1 Ω typical), enabling effective clamping within <1 ns response time.
Rated for -55 °C to +175 °C junction temperature, it supports high-reliability operation under repetitive surge stress (0.01% duty cycle), with thermal resistance of 15.4 °C/W (junction-to-lead) and 75 °C/W (junction-to-ambient). The 1.5KE package uses molded epoxy with UL 94 V-0 flammability rating and solderable per J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 77.9 V / 86.1 V at 1 mA - defines precise avalanche initiation threshold for reliable overvoltage detection |
| VWM | 70.1 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | 113 V at 13.3 A - clamping voltage during 10/1000 µs surge, limiting protected circuit stress |
| PPPM | 1500 W - peak pulse power handling capability, enabling robust protection against lightning and EFT events |
| IFSM | 200 A - non-repetitive forward surge current rating (8.3 ms half-sine), supporting high-energy transient absorption |
| TJ max | +175 °C - extended junction temperature range allows use in under-hood automotive and high-ambient industrial environments |
| RθJL | 15.4 °C/W - low junction-to-lead thermal resistance enables efficient heat dissipation through PCB copper pours or heatsinking |
Pinout & Package
Package: JEDEC-standard 1.5KE axial-leaded DO-201AD molded epoxy case (1.0" × 0.285", 25.4 mm × 7.2 mm), UL 94 V-0 rated, matte tin-plated leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path (unidirectional) | Connected to ground or low-impedance return; completes clamping loop during reverse overvoltage events |
| Cathode | Protected line connection / Avalanche trigger node | Marked with color band; connects to line being protected (e.g., 24 V rail, CAN_H); conducts when VAK > VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance (±5%), low leakage (<1 µA at VWM), and long-term reliability under thermal cycling |
| 1500 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity without derating in standard PCB layouts |
| Clamping ratio (VC/VBR) ≈ 1.45 | Low ratio indicates high surge current handling efficiency and minimal voltage overshoot during clamping |
| AEC-Q101 qualified variants available | HE3 suffix versions (e.g., 1.5KE82AHE3_B) meet automotive-grade stress testing for engine control and body electronics |
| RoHS-compliant, JESD 201 Class 1A whisker tested | Enables lead-free reflow assembly and eliminates tin whisker risk in high-reliability, long-life applications |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: 24 V DC input stage of programmable logic controller (PLC) power supply exposed to load dump and relay coil flyback. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between +24 V rail and chassis ground to clamp transients before they reach DC/DC converter ICs. Use Value: Limits voltage to ≤113 V during 13.3 A surge, preventing damage to 36 V-rated input capacitors and synchronous rectifier MOSFETs. |
Use Scenario: LIN bus transceiver power line in door module subjected to ISO 7637-2 Pulse 5a (load dump up to 60 V). IC Role / Device Role / Timing Role: Primary overvoltage clamp on VCC rail feeding LIN PHY IC, positioned upstream of local LDO regulator. Use Value: Absorbs 1500 W surge energy within nanoseconds, maintaining rail integrity and avoiding reset or latch-up of communication ICs. |
| Telecom Remote Terminal Unit (RTU) | Consumer Appliance Motor Drive Board |
Use Scenario: 48 V PoE-powered remote telemetry unit installed on utility pole, subject to induced lightning surges on Ethernet and power lines. IC Role / Device Role / Timing Role: First-stage protection device on DC input, coordinated with GDT and MOV for multi-level surge suppression. Use Value: Fast <1 ns response captures initial surge edge, while 113 V clamping prevents overstress of 60 V-rated DC/DC controller and Ethernet PHY. |
Use Scenario: Brushless DC motor driver board in smart washing machine, where H-bridge gate drivers face back-EMF spikes during commutation. IC Role / Device Role / Timing Role: Rail clamp across motor phase output (between high-side and low-side FET sources) to suppress inductive kick. Use Value: Clamps voltage to 113 V during 13.3 A transient, protecting 100 V-rated gate drivers and preventing shoot-through failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ80A | Lower PPPM (600 W), smaller SMB package (3.5 mm × 4.6 mm), VC = 129 V @ 4.7 A | Used where board space is constrained and surge energy is lower (e.g., USB port protection) | Select SMBJ80A only if system-level surge testing confirms 600 W is sufficient; not suitable for IEC 61000-4-5 Level 4 compliance without parallel staging. |
| 1.5KE82CA | Bidirectional variant (symmetrical clamping), same VBR range, identical PPPM and package | Required for AC-coupled or differential signal lines (e.g., RS-485, CAN bus) where polarity reversal occurs | Choose 1.5KE82CA when protecting bidirectional data lines; 1.5KE82-E3/54 is optimal for unidirectional DC rails with defined polarity. |
Compared with SMBJ80A, 1.5KE82-E3/54 delivers 2.5× higher surge power handling and superior thermal dissipation via axial leads, making it preferred for high-energy industrial transients; versus 1.5KE82CA, it offers lower capacitance and tighter VBR tolerance for DC rail protection where polarity is fixed.
Availability
1.5KE82-E3/54 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, telecom infrastructure equipment, and consumer appliance motor drives requiring stable component supply and long-lifecycle support.
Supply support for 1.5KE82-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, precision, and high-power handling.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial automation, and telecom infrastructure where sustained surge immunity and thermal stability are mission-critical.
FAQ
What is the breakdown voltage tolerance for 1.5KE82-E3/54?
The 1.5KE82-E3/54 has a specified breakdown voltage range of 77.9 V to 86.1 V at 1 mA test current, representing a ±5% tolerance around the nominal 82 V rating. This tight tolerance ensures predictable clamping behavior across production lots and temperature ranges, critical for consistent overvoltage protection in safety-critical systems.
Is 1.5KE82-E3/54 suitable for automotive applications?
Yes - while the base 1.5KE82-E3/54 is commercial-grade, Vishay offers the AEC-Q101-qualified 1.5KE82AHE3_B variant in the same 1.5KE package. That version undergoes rigorous stress testing including temperature cycling, humidity bias, and high-temperature operating life, making it approved for under-hood and body electronics applications where 1.5KE82-E3/54's electrical specs are required with automotive reliability.
How does the clamping voltage of 1.5KE82-E3/54 compare to its breakdown voltage?
The 1.5KE82-E3/54 clamps at 113 V when subjected to its rated 13.3 A peak pulse current (10/1000 µs waveform), resulting in a clamping ratio (VC/VBR) of approximately 1.45. This ratio reflects efficient avalanche conduction with low dynamic impedance, ensuring minimal overvoltage overshoot beyond the breakdown threshold during real-world surge events.
What is the maximum operating temperature for 1.5KE82-E3/54?
The 1.5KE82-E3/54 has a maximum junction temperature (TJ) rating of +175 °C and an operating ambient temperature range of -55 °C to +175 °C. Its thermal resistance of 15.4 °C/W (junction-to-lead) allows direct heat transfer to PCB copper or external heatsinks, enabling reliable operation in high-ambient environments such as engine compartments or enclosed industrial enclosures.
Can 1.5KE82-E3/54 be used in bidirectional signal protection?
No - 1.5KE82-E3/54 is a unidirectional TVS diode, marked with a cathode band and intended for DC rail protection where polarity is fixed. For bidirectional signal lines like RS-485 or CAN, the 1.5KE82CA variant must be used instead, as it provides symmetrical clamping in both polarities and lacks polarity marking. Using 1.5KE82-E3/54 on AC-coupled lines risks forward conduction and failure.
1.5KE82-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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 66.4V
- Voltage - Breakdown (Min):
- 73.8V
- Voltage - Clamping (Max) @ Ipp:
- 118V
- Current - Peak Pulse (10/1000µs):
- 12.7A
- 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
1.5KE82-E3/54 FAQ
1.How can I place an order for 1.5KE82-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE82-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 1.5KE82-E3/54 reliable?
The price and inventory of 1.5KE82-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 1.5KE82-E3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE82-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE82-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE82-E3/54?
1.5KE82-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE82-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 1.5KE82-E3/54?
For technical support, including 1.5KE82-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE82-E3/54 requirements.
6.How does Aetrix verify that 1.5KE82-E3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE82-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 1.5KE82-E3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE82-E3/54?
All 1.5KE82-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE82-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 1.5KE82-E3/54 part is unused and in its original packaging.
Return procedure for 1.5KE82-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE82-E3/54 Tags
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