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Vishay General Semiconductor - Diodes Division 1.5KE8.2AHE3/51
- Part No.:
- 1.5KE8.2AHE3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE8.2AHE3/51.pdf
- Description:
- TVS DIODE 7.02VWM 12.1VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:3,650
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Product details
Overview
1.5KE8.2AHE3/51 from Vishay General Semiconductor is a uni-directional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection in DC power rails and signal lines. It features a 7.79 V to 8.61 V breakdown voltage (VBR) at 10 mA, 7.02 V maximum stand-off voltage (VWM), 12.1 V clamping voltage (VC) at 124 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform.
For engineers reviewing the 1.5KE8.2AHE3/51 datasheet, 1.5KE8.2AHE3/51 pinout, 1.5KE8.2AHE3/51 application, or 1.5KE8.2AHE3/51 equivalent, this device is selected for robust ESD and surge immunity in automotive power supplies, industrial sensor interfaces, and telecom front-end protection where fast clamping (<1 ns), low leakage (<200 µA), and AEC-Q101 qualification are required.
Technical Context
The 1.5KE8.2AHE3/51 operates as a uni-directional avalanche diode with glass-passivated junction, enabling sub-nanosecond response to transients. Its clamping action begins at VWM = 7.02 V and limits voltage to ≤12.1 V under 124 A surge, delivering precise overvoltage thresholding without forward conduction during normal operation.
Thermally, it supports continuous operation up to +175 °C junction temperature and exhibits RθJA = 75 °C/W and RθJL = 15.4 °C/W. The HE3 suffix confirms RoHS compliance and AEC-Q101 qualification per JESD22-B102 solderability and JESD201 Class 2 whisker resistance standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 7.79 V / 8.61 V at 10 mA - defines precise avalanche initiation window for reliable triggering |
| VWM | 7.02 V - maximum continuous reverse operating 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 with 10/1000 µs waveform, suitable for lightning-level surges |
| IFSM | 200 A - non-repetitive forward surge current rating (8.3 ms half-sine), supports high-energy fault clearing |
| TJ max | +175 °C - extended junction temperature range enables under-hood and industrial ambient use |
| Leakage @ VWM | <200 µA - minimal standby power loss and signal integrity impact in always-on circuits |
Pinout & Package
Package: DO-201AD (Case Style 1.5KE), axial leaded, molded epoxy body meeting UL 94 V-0. Cathode indicated by color band; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to ground or low-impedance return in uni-directional clamp configuration |
| Cathode | Avalanche clamping node / protected line connection | Connected to line being protected (e.g., 5 V rail); conducts when Vin > VC |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable, repeatable avalanche characteristics and long-term reliability under thermal cycling |
| 1500 W peak pulse power (10/1000 µs) | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth) without degradation |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive powertrain and body electronics per stress test requirements |
| Clamping time <1 ns | Protects CMOS ICs and MOSFET gates before destructive voltage overshoot occurs |
| Low incremental surge resistance | Minimizes VC rise under high di/dt, preserving margin between VC and device VDS(max)/VCEO |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: 12 V battery-supplied ECUs exposed to load dump (ISO 7637-2 Pulse 5a) and alternator transients. IC Role / Device Role / Timing Role: Primary clamping element placed at power entry point, shunting surge energy to chassis ground before LDOs and microcontrollers. Use Value: Limits input voltage to ≤12.1 V during 124 A transients, preventing latch-up and gate oxide rupture in downstream 16 V-rated regulators. |
Use Scenario: 4–20 mA current loop transmitters interfacing with PLC analog inputs in factory automation. IC Role / Device Role / Timing Role: Uni-directional TVS on loop supply line, referenced to local ground to suppress induced surges from motor drives. Use Value: Maintains <200 µA leakage at 7.02 V, avoiding current-loop accuracy errors while clamping 1500 W transients within 1 ns. |
| Telecom Line Card Surge Protection | Consumer Power Adapter Input Stage |
Use Scenario: AC/DC front-end of DSLAM line cards subjected to lightning-induced surges on copper pairs. IC Role / Device Role / Timing Role: First-stage protector upstream of bridge rectifier and bulk capacitor, absorbing common-mode energy. Use Value: Withstands repetitive 10/1000 µs surges up to 0.01% duty cycle, extending system MTBF in outdoor cabinet deployments. |
Use Scenario: Secondary-side 5 V output rail of USB-C PD adapters protecting connected devices from back-fed transients. IC Role / Device Role / Timing Role: Low-VWM TVS across output terminals, activated only during fault conditions to avoid regulation interference. Use Value: Clamps to 12.1 V before downstream USB-PD controller overvoltage shutdown threshold (typically 13.2 V), enabling graceful fault recovery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.0A | Lower PPPM (600 W), smaller SMB package (vs. DO-201AD), VBR = 8.89–9.83 V | Better suited for space-constrained PCBs; lower surge capacity limits use to Level 2/3 IEC 61000-4-5 | Select when board area is critical and surge threat level is moderate (e.g., indoor consumer ports) |
| 1.5KE8.2A | Same electrical specs but commercial-grade (E3 suffix only), not AEC-Q101 qualified | Lacks automotive qualification; unsuitable for under-hood or safety-critical modules | Choose only for cost-sensitive industrial or computing applications where AEC-Q101 is not mandated |
Compared with SMBJ8.0A and 1.5KE8.2A, the 1.5KE8.2AHE3/51 uniquely delivers automotive-grade reliability (AEC-Q101), full 1500 W surge capability in a through-hole package, and tighter VBR tolerance-making it optimal for high-reliability power rail protection where qualification and energy handling are non-negotiable.
Availability
1.5KE8.2AHE3/51 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor signal conditioning, and telecom line card surge protection requiring stable component supply and long-term lifecycle support.
Supply support for 1.5KE8.2AHE3/51 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and ruggedized performance.
The 1.5KE series was engineered for high-energy transient suppression in harsh environments-targeting automotive, industrial, and telecom infrastructure where failure modes must be mitigated by robust, standardized, and qualification-backed components.
FAQ
What is the breakdown voltage range of the 1.5KE8.2AHE3/51?
The 1.5KE8.2AHE3/51 has a guaranteed breakdown voltage (VBR) range of 7.79 V to 8.61 V at a test current of 10 mA. This tight tolerance ensures consistent clamping behavior across production lots and supports precise overvoltage threshold design in 5 V and 8 V systems. The value is measured per JEDEC standard and confirmed in Vishay's 88301 datasheet revision.
Is the 1.5KE8.2AHE3/51 suitable for automotive applications?
Yes-the 1.5KE8.2AHE3/51 carries the HE3 suffix, which certifies RoHS compliance and AEC-Q101 qualification per Vishay's documentation. It meets stress tests including temperature cycling, humidity bias, and mechanical shock, making it approved for use in automotive power distribution modules, body control units, and ADAS sensor power supplies.
What is the clamping voltage of the 1.5KE8.2AHE3/51 under surge conditions?
The 1.5KE8.2AHE3/51 clamps to a maximum of 12.1 V when subjected to its rated peak pulse current of 124 A (10/1000 µs waveform). This clamping voltage is measured across the device terminals and defines the upper voltage limit imposed on protected circuitry during transient events.
How does the 1.5KE8.2AHE3/51 differ from the standard 1.5KE8.2A?
The 1.5KE8.2AHE3/51 adds AEC-Q101 qualification and enhanced whisker resistance (JESD201 Class 2) versus the commercial-grade 1.5KE8.2A (E3 suffix only). Both share identical electrical parameters, but only the HE3 version is approved for automotive under-hood use and high-reliability industrial deployments.
What package type does the 1.5KE8.2AHE3/51 use?
The 1.5KE8.2AHE3/51 uses the DO-201AD package (Case Style 1.5KE), an axial-leaded, epoxy-molded outline with 0.375" lead length. It complies with UL 94 V-0 flammability and features matte tin-plated leads certified to J-STD-002 and JESD 22-B102 solderability standards.
1.5KE8.2AHE3/51 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):
- 7.02V
- Voltage - Breakdown (Min):
- 7.79V
- Voltage - Clamping (Max) @ Ipp:
- 12.1V
- Current - Peak Pulse (10/1000µs):
- 124A
- 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
1.5KE8.2AHE3/51 FAQ
1.How can I place an order for 1.5KE8.2AHE3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE8.2AHE3/51 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 1.5KE8.2AHE3/51 reliable?
The price and inventory of 1.5KE8.2AHE3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE8.2AHE3/51 is usually 5 days.
3.What payment methods are accepted for 1.5KE8.2AHE3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE8.2AHE3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE8.2AHE3/51?
1.5KE8.2AHE3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE8.2AHE3/51 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 1.5KE8.2AHE3/51?
For technical support, including 1.5KE8.2AHE3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE8.2AHE3/51 requirements.
6.How does Aetrix verify that 1.5KE8.2AHE3/51 is sourced from the original manufacturer or authorized distributors?
All 1.5KE8.2AHE3/51 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 1.5KE8.2AHE3/51 meets industry standards.
7.What is the process for return or replacement of 1.5KE8.2AHE3/51?
All 1.5KE8.2AHE3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE8.2AHE3/51, 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 1.5KE8.2AHE3/51 part is unused and in its original packaging.
Return procedure for 1.5KE8.2AHE3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE8.2AHE3/51 Tags
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Diodes Incorporated
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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