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Vishay General Semiconductor - Diodes Division 1.5KE82A-E3/51
- Part No.:
- 1.5KE82A-E3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE82A-E3/51.pdf
- Description:
- TVS DIODE 70.1VWM 113VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:9,408
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Product details
Overview
1.5KE82A-E3/51 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 working peak reverse voltage (VWM), 113 V clamping voltage (VC) at 13.3 A peak pulse current, and 1500 W peak pulse power capability 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 1.5KE82A-E3/51 datasheet, 1.5KE82A-E3/51 pinout, 1.5KE82A-E3/51 application, or 1.5KE82A-E3/51 equivalent, this page delivers verified electrical parameters, JEDEC 1.5KE package details, thermal derating behavior, clamping performance under surge conditions, and validated alternative parts for industrial power supply, automotive body electronics, and telecom line protection designs.
Technical Context
This unidirectional 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 circuitry. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 µA at VWM), while the 15.4 °C/W junction-to-lead thermal resistance supports reliable energy dissipation during repetitive 10/1000 µs pulses.
The device complies with JEDEC DO-201AD mechanical outline and is rated for -55 °C to +175 °C operating junction temperature. It exhibits 0.105 %/°C temperature coefficient of VBR, enabling predictable voltage margining across temperature, and meets JESD 201 Class 1A whisker resistance with matte tin-plated leads.
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 accurate overvoltage trip point |
| VWM | 70.1 V - maximum continuous reverse voltage before significant leakage; sets safe DC operating margin |
| VC @ IPPM | 113 V at 13.3 A - clamping voltage during 1500 W surge; determines protected circuit's maximum transient exposure |
| PPPM | 1500 W - peak pulse power handling per 10/1000 µs waveform; enables robust protection against lightning & switching spikes |
| IFSM | 200 A - non-repetitive forward surge rating (8.3 ms half-sine); supports high-energy fault clearing in power stages |
| TJ max. | +175 °C - maximum junction temperature; allows operation in under-hood automotive or high-ambient industrial environments |
| RθJL | 15.4 °C/W - junction-to-lead thermal resistance; informs heatsinking requirements for sustained surge duty cycles |
Pinout & Package
Package: JEDEC DO-201AD (Case Style 1.5KE), axial-leaded molded epoxy body with cathode band marking; RoHS-compliant matte tin-plated leads, UL 94 V-0 rated compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional configuration |
| Cathode (banded end) | Avalanche clamping terminal | Connected to protected line (e.g., +12 V rail or signal input); conducts surge current to anode during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and low long-term drift under thermal cycling and humidity stress |
| 1500 W peak pulse power (10/1000 µs) | Provides single-event surge immunity exceeding IEC 61000-4-5 Level 4 (4 kV) in properly coupled circuits |
| 113 V clamping at 13.3 A | Limits transient overshoot on 70 V-rated systems to <62% above nominal rail, preserving MOSFET VDSS margin |
| 0.105 %/°C VBR tempco | Enables ±3.5% VBR shift over -40 °C to +125 °C ambient, supporting deterministic overvoltage design margins |
| JESD 201 Class 1A whisker resistance | Guarantees lead integrity in high-reliability solder joints without tin whisker growth risk over 10+ year service life |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Protecting 24 V DC input stage of programmable logic controllers (PLCs) against load dump and ISO 7637-2 Pulse 5a transients. IC Role / Device Role / Timing Role: Shunt clamping element placed between VIN and GND, responding within <1 ns to clamp voltage spikes before they reach DC-DC controller ICs. Use Value: Limits transient voltage to ≤113 V, maintaining >10 V margin below typical 130 V MOSFET VDSS rating and preventing gate oxide damage. |
Use Scenario: Safeguarding LIN bus transceiver inputs and microcontroller I/O pins in door module ECUs exposed to battery reversal and jump-start surges. IC Role / Device Role / Timing Role: Unidirectional TVS connected anode-to-ground, cathode-to-LIN line, clamping negative transients and positive overvoltages. Use Value: Withstands 200 A forward surge (8.3 ms) and clamps 13.3 A pulses to 113 V, ensuring transceiver survival during 12 V system faults. |
| Telecom Remote Terminal Unit (RTU) | Consumer Appliance Motor Drive Interface |
Use Scenario: Shielding RS-485 transceivers and microcontroller UART lines in outdoor utility meters subjected to induced lightning surges on long cable runs. IC Role / Device Role / Timing Role: Line-side TVS on differential pair, operating in unidirectional mode to suppress common-mode overvoltages while preserving signal integrity. Use Value: 1500 W pulse rating and 113 V clamping enable compliance with ITU-T K.20/21 secondary protection requirements for rural telecom infrastructure. |
Use Scenario: Protecting MCU GPIOs and gate drivers in smart washing machine motor control boards from back-EMF spikes generated by brushed DC motors. IC Role / Device Role / Timing Role: Localized TVS at motor driver output stage, placed directly across H-bridge leg outputs to clamp inductive kickback. Use Value: Fast <1 ns response and 70.1 V VWM allow integration without interfering with 5 V or 3.3 V logic levels, while 113 V clamping prevents driver IC latch-up. |
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 | DO-214AA package (smaller footprint), 80 V VBR min, 1000 W PPPM, higher RθJA (110 °C/W) | Better suited for space-constrained PCBs; lower power rating requires tighter layout for thermal management | Select SMBJ80A when board area is limited and peak surge energy is ≤1000 W; verify thermal relief pad design for sustained pulses. |
| 1.5KE82CA | Bidirectional variant, same VBR range, identical PPPM and package, but symmetric clamping in both polarities | Required for AC-coupled or floating signal lines where polarity reversal may occur (e.g., Ethernet PHY, audio lines) | Choose 1.5KE82CA only if bidirectional protection is mandated; unidirectional 1.5KE82A-E3/51 offers superior cost and leakage performance for DC rails. |
Compared with SMBJ80A, the 1.5KE82A-E3/51 delivers 50% higher surge power handling and lower thermal resistance for high-reliability industrial use; versus 1.5KE82CA, it provides tighter leakage control and lower capacitance for DC-biased applications, though lacks reverse-polarity clamping.
Availability
1.5KE82A-E3/51 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, and telecom remote terminal units requiring stable component supply and long-lifecycle support.
Supply support for 1.5KE82A-E3/51 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 1.5KE series was engineered for high-energy transient suppression in harsh environments, targeting applications demanding 1500 W surge capability, AEC-Q101 readiness, and stable parametric performance across extended temperature ranges.
FAQ
What is the breakdown voltage tolerance for 1.5KE82A-E3/51?
The 1.5KE82A-E3/51 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 VBR window ensures consistent clamping behavior across production lots and supports precise overvoltage margining in safety-critical designs.
Does 1.5KE82A-E3/51 meet automotive qualification standards?
The base 1.5KE82A-E3/51 is commercial-grade and not AEC-Q101 qualified; however, the functionally identical 1.5KE82AHE3_B variant is AEC-Q101 qualified for automotive applications. Engineers requiring automotive compliance must specify the HE3_B suffix version, which shares identical electrical specs but adds stress testing per AEC-Q101 Rev D.
How does the clamping voltage of 1.5KE82A-E3/51 compare to its breakdown voltage?
The 1.5KE82A-E3/51 clamps at 113 V when subjected to its rated 13.3 A peak pulse current (10/1000 µs), which is approximately 37% above its minimum breakdown voltage of 77.9 V. This incremental clamping voltage (ΔVC = 35.1 V) reflects the device's low dynamic impedance during avalanche conduction and defines the actual overvoltage stress seen by protected components.
Can 1.5KE82A-E3/51 be used in bidirectional protection circuits?
No - the 1.5KE82A-E3/51 is strictly unidirectional and must be installed with cathode toward the protected line and anode to ground. For bidirectional protection, the 1.5KE82CA variant is required; it uses the same package and surge rating but provides symmetrical clamping for both positive and negative transients.
What is the maximum operating temperature for 1.5KE82A-E3/51?
The 1.5KE82A-E3/51 has a maximum junction temperature (TJ) rating of +175 °C and operates over a storage and junction temperature range of -55 °C to +175 °C. Its thermal resistance from junction to lead is 15.4 °C/W, enabling reliable operation in under-hood automotive or high-ambient industrial environments when mounted with adequate copper pour.
1.5KE82A-E3/51 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 70.1V
- Voltage - Breakdown (Min):
- 77.9V
- Voltage - Clamping (Max) @ Ipp:
- 113V
- Current - Peak Pulse (10/1000µs):
- 13.3A
- 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
1.5KE82A-E3/51 FAQ
1.How can I place an order for 1.5KE82A-E3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE82A-E3/51 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 1.5KE82A-E3/51 reliable?
The price and inventory of 1.5KE82A-E3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE82A-E3/51 is usually 5 days.
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Once your 1.5KE82A-E3/51 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 1.5KE82A-E3/51?
For technical support, including 1.5KE82A-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE82A-E3/51 requirements.
6.How does Aetrix verify that 1.5KE82A-E3/51 is sourced from the original manufacturer or authorized distributors?
All 1.5KE82A-E3/51 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 1.5KE82A-E3/51 meets industry standards.
7.What is the process for return or replacement of 1.5KE82A-E3/51?
All 1.5KE82A-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE82A-E3/51, 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 1.5KE82A-E3/51 part is unused and in its original packaging.
Return procedure for 1.5KE82A-E3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE82A-E3/51 Tags
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