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Vishay General Semiconductor - Diodes Division 1.5KE82-E3/73
- Part No.:
- 1.5KE82-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE82-E3/73.pdf
- Description:
- TVS DIODE 66.4VWM 118VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:9,608
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Product details
Overview
1.5KE82-E3/73 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary-side overvoltage protection in DC power rails and signal lines. It features a 77.9 V minimum breakdown voltage (VBR), 70.1 V maximum standoff voltage (VWM), 113 V clamping voltage (VC) at 13.3 A peak pulse current, 1500 W peak pulse power rating (10/1000 µs), and operates across -55 °C to +175 °C junction temperature range - used in automotive power supply input stages and industrial sensor interface protection.
For engineers reviewing the 1.5KE82-E3/73 datasheet, 1.5KE82-E3/73 pinout, 1.5KE82-E3/73 application, or 1.5KE82-E3/73 equivalent, this page delivers verified electrical parameters, JEDEC-standard 1.5KE package dimensions, polarity marking convention, thermal resistance (RθJA = 75 °C/W), and AEC-Q101-qualified alternatives where applicable - all confirmed against Vishay Document #88301 (Rev. 09-Aug-2022).
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction to achieve sub-nanosecond response time (<1 ns) and low incremental surge resistance. Its clamping behavior is defined by a 10/1000 µs double-exponential waveform with 0.01% duty cycle, and it sustains 200 A non-repetitive forward surge current (8.3 ms half-sine) per JESD22-B101.
The device exhibits a positive temperature coefficient of breakdown voltage (+0.105 %/°C), enabling stable performance under thermal stress. Standoff voltage (70.1 V) ensures reliable blocking during normal operation, while clamping voltage (113 V) limits transient energy delivered to downstream ICs such as microcontrollers or CAN transceivers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 77.9 V / 86.1 V at 1 mA test current - defines precise voltage threshold at which clamping initiates under controlled conditions |
| VWM | 70.1 V maximum - ensures no conduction during normal DC operation up to rated system voltage |
| VC @ IPPM | 113 V at 13.3 A peak pulse current - actual worst-case voltage seen by protected circuit during 10/1000 µs surge |
| PPPM | 1500 W - peak transient energy absorption capability without failure, critical for lightning or ESD event handling |
| IFSM | 200 A - maximum non-repetitive forward surge current tolerance, supporting high-energy inductive switch-off events |
| TJ range | -55 °C to +175 °C - enables deployment in under-hood automotive, industrial motor drives, and outdoor telecom equipment |
| RθJA | 75 °C/W - thermal resistance from junction to ambient, informs heatsinking requirements for sustained power dissipation |
Pinout & Package
Package: JEDEC-standard Case Style 1.5KE - molded epoxy body with matte tin-plated leads, UL 94 V-0 rated, RoHS-compliant (E3 suffix), 0.375" lead length. Cathode indicated by color band on unidirectional devices like 1.5KE82-E3/73.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction or reverse clamping | Connected to protected line (e.g., +12 V rail); must be routed with low-inductance path to ground reference |
| Cathode | Current exit point; marked by axial color band | Connected to system ground or low-impedance return path; determines polarity-sensitive placement on PCB |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable long-term reliability and consistent VBR drift < ±5% over lifetime under thermal cycling |
| 1500 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-to-ground) without derating in compact layout |
| Sub-nanosecond response time | Clamps transients before sensitive logic or analog circuits experience overstress - critical for protecting 3.3 V/5 V MCU I/O |
| AEC-Q101 qualified option available | 1.5KE82AHE3_B variant meets automotive-grade qualification for engine control, body electronics, and ADAS power domains |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a), improving protection margin |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: 12 V battery-fed ECUs exposed to load dump (ISO 16750-2) and alternator ripple. IC Role / Device Role / Timing Role: Primary clamping element placed between battery rail and DC-DC converter input. Use Value: Limits transient voltage to ≤113 V, preventing damage to buck controller ICs rated for 36 V max input. |
Use Scenario: 4–20 mA current loop interfaces in PLC analog input modules subjected to field wiring ESD. IC Role / Device Role / Timing Role: Bidirectional suppression not applicable; 1.5KE82-E3/73 used in unidirectional configuration on supply side of op-amp front-end. Use Value: Clamps induced surges to safe level before reaching precision instrumentation amplifier, preserving 16-bit ADC accuracy. |
| Telecom DC Power Feeds | Consumer Appliance Motor Drive Control |
Use Scenario: Central office power distribution feeding remote DSLAM units over long copper pairs vulnerable to lightning-induced surges. IC Role / Device Role / Timing Role: First-stage protection on -48 V DC feed before DC-DC isolation stage. Use Value: Absorbs 1500 W surge energy without degradation, maintaining >100 k-cycle lifetime under repeated 10/1000 µs events. |
Use Scenario: Brushless DC motor drive boards in smart HVAC systems experiencing back-EMF spikes during commutation. IC Role / Device Role / Timing Role: Parallel-connected across H-bridge high-side FET drain-source to clamp inductive kickback. Use Value: Limits VDS stress to 113 V, allowing use of 150 V-rated MOSFETs instead of costlier 200 V devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ80A | Lower PPPM (600 W), smaller SMB package (vs. 1.5KE), VC = 123 V @ 4.9 A | Used where board space is constrained but surge energy is lower (e.g., USB port protection) | Select SMBJ80A only if system-level surge testing confirms ≤600 W requirement and thermal budget allows higher RθJA |
| 1.5KE82AHE3_B | AEC-Q101 qualified, same electrical specs, identical 1.5KE package, HE3 suffix denotes whisker-tested leads | Required for automotive OEM designs needing PPAP documentation and extended temperature validation | Choose 1.5KE82AHE3_B when qualifying for automotive production - 1.5KE82-E3/73 remains valid for industrial/commercial use |
Compared with SMBJ80A, 1.5KE82-E3/73 delivers 2.5× higher surge power handling and superior thermal robustness; versus 1.5KE82AHE3_B, it lacks automotive qualification but offers identical clamping performance at lower cost for non-automotive applications.
Availability
1.5KE82-E3/73 is available at Aetrix Electronics and suitable for automotive power input protection, industrial sensor signal line protection, telecom DC power feeds, and consumer appliance motor drive control requiring stable component supply and full traceability.
Supply support for 1.5KE82-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, and protection devices with emphasis on reliability, power handling, and automotive qualification.
The 1.5KE series was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where failure modes demand proven 1500 W surge resilience and wide temperature operation.
FAQ
What is the clamping voltage of the 1.5KE82-E3/73 under a 10/1000 µs surge?
The 1.5KE82-E3/73 has a maximum clamping voltage (VC) of 113 V at 13.3 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value is measured per JEDEC test conditions and represents the upper limit of voltage imposed on the protected circuit during a full-power transient event. The 1.5KE82-E3/73 maintains this clamping performance across its specified operating temperature range.
Is the 1.5KE82-E3/73 unidirectional or bidirectional?
The 1.5KE82-E3/73 is a unidirectional TVS diode, indicated by the absence of "C" in its part number (e.g., 1.5KE82CA would be bidirectional). Its cathode is marked with an axial color band, and it conducts only during reverse-bias overvoltage events. Forward conduction occurs only during surge conditions exceeding its 3.5 V forward voltage at 100 A - a feature leveraged in certain crowbar-style protection schemes.
Does the 1.5KE82-E3/73 meet automotive qualification standards?
The base 1.5KE82-E3/73 is commercial-grade and not AEC-Q101 qualified. However, Vishay offers the functionally identical 1.5KE82AHE3_B variant, which carries AEC-Q101 qualification for automotive applications. Both share identical electrical characteristics and 1.5KE package dimensions, but only 1.5KE82AHE3_B includes PPAP documentation, extended temperature validation, and JESD201 Class 2 whisker testing.
What is the standoff voltage rating for the 1.5KE82-E3/73?
The 1.5KE82-E3/73 has a maximum working peak reverse voltage (VWM) of 70.1 V, meaning it remains in high-impedance blocking state for any applied DC or AC voltage ≤70.1 V. This parameter ensures no leakage current or power loss during nominal operation - critical for maintaining efficiency in 48 V industrial systems or 24 V control circuits where the 1.5KE82-E3/73 is commonly deployed.
How does the thermal resistance of the 1.5KE82-E3/73 affect PCB layout?
The 1.5KE82-E3/73 has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W, meaning each watt of sustained power dissipation raises junction temperature by 75 °C above ambient. For reliable long-term operation, PCB layout must include adequate copper pour on both anode and cathode pads, minimize trace length, and avoid enclosing the device in thermally insulating enclosures - especially important when using the 1.5KE82-E3/73 in high-temperature environments like under-hood automotive locations.
1.5KE82-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:
- 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-E3/73 FAQ
1.How can I place an order for 1.5KE82-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE82-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 1.5KE82-E3/73 reliable?
The price and inventory of 1.5KE82-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 1.5KE82-E3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KE82-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE82-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE82-E3/73?
1.5KE82-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE82-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 1.5KE82-E3/73?
For technical support, including 1.5KE82-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE82-E3/73 requirements.
6.How does Aetrix verify that 1.5KE82-E3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE82-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 1.5KE82-E3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE82-E3/73?
All 1.5KE82-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE82-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 1.5KE82-E3/73 part is unused and in its original packaging.
Return procedure for 1.5KE82-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE82-E3/73 Tags
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