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Vishay General Semiconductor - Diodes Division 1.5KA8.2AHE3/54
- Part No.:
- 1.5KA8.2AHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KA8.2AHE3/54.pdf
- Description:
- TVS DIODE 7.02VWM 12.1VC 1.5KA
- Quantity:
- Payment:
- Shipping:
Inventory:4,402
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Product details
Overview
1.5KA8.2AHE3/54 from Vishay General Semiconductor is an automotive-grade unidirectional transient voltage suppressor (TVS) diode designed for clamping inductive switching surges and lightning-induced transients. It features a 1500 W peak pulse power rating (10/1000 µs), 7.79–8.61 V breakdown voltage at 10 mA, 7.02 V stand-off voltage, 124 A peak pulse current, and AEC-Q101 qualification for under-hood automotive electronics.
For engineers reviewing the 1.5KA8.2AHE3/54 datasheet, 1.5KA8.2AHE3/54 pinout, 1.5KA8.2AHE3/54 application, or 1.5KA8.2AHE3/54 equivalent, key selection criteria include clamping voltage (12.1 V at 124 A), junction temperature range (–65 °C to +185 °C), RoHS-compliant HE3 packaging, and automotive reliability validation per JESD201 Class 2 whisker testing.
Technical Context
This TVS diode operates as a unidirectional clamping device with a passivated silicon junction housed in a molded epoxy case (Case Style 1.5KA). Its patented PAR® construction enables low incremental surge resistance and fast response time (<1 ns), critical for protecting MOSFETs and sensor signal lines against ISO 7637-2 and IEC 61000-4-5 compliant transients.
It is rated for 200 A non-repetitive forward surge (8.3 ms half-sine), exhibits 0.065 %/°C temperature coefficient of VBR, and maintains stable clamping performance up to TJ = 185 °C - enabling use in high-temperature engine control units and powertrain modules without derating penalties.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 µs) | 1500 W - sustains automotive load-dump and inductive kick energy without failure |
| Breakdown Voltage VBR | 7.79–8.61 V at 10 mA - defines precise clamping onset threshold for 12 V systems |
| Clamping Voltage VC | 12.1 V at 124 A - limits downstream IC voltage stress during worst-case surge events |
| Stand-off Voltage VWM | 7.02 V - ensures no conduction during normal 12 V rail operation, minimizing leakage |
| Operating Temperature Range | –65 °C to +185 °C - supports placement near engines, inverters, and other high-heat zones |
| AEC-Q101 Qualified | Yes - validated for automotive applications including powertrain, body control, and ADAS sensors |
| RoHS & Whisker Tested | HE3 suffix meets RoHS 2002/95/EC and JESD201 Class 2 - ensures long-term solder joint reliability |
Pinout & Package
Case Style 1.5KA: axial-leaded DO-201AD package with matte tin-plated leads; cathode denoted by color band; lead length 9.5 mm (0.375"); UL 94 V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during reverse-biased clamping | Connected to protected line (e.g., sensor supply); conducts only during overvoltage |
| Cathode | Current exit point during clamping; marked by band | Connected to ground or lower-potential reference; establishes unidirectional protection path |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Reduces incremental surge resistance for tighter clamping and lower let-through voltage |
| 1500 W peak pulse power (10/1000 µs) | Handles severe automotive transients including ISO 16750-2 load dump and ISO 7637-2 pulse 5a |
| AEC-Q101 qualified (automotive grade) | Validated for extended life and reliability in harsh thermal and vibration environments |
| Low clamping ratio (VC/VBR ≈ 1.48) | Minimizes overvoltage exposure to downstream ICs while maintaining margin above VWM |
| Junction temperature max. 185 °C | Enables direct mounting on hot PCB areas without external heatsinking or layout constraints |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive Interface |
|---|---|
Use Scenario: Protecting microcontroller I/O and CAN transceiver power rails from alternator load dump and solenoid coil flyback. IC Role / Device Role: Unidirectional clamping TVS placed between 12 V supply and ground, adjacent to protected IC. Use Value: Limits transient voltage to ≤12.1 V, preventing latch-up or gate oxide damage in 3.3 V/5 V logic interfaces. | Use Scenario: Safeguarding analog input channels of PLC analog modules from motor contactor switching noise. IC Role / Device Role: Standoff protection element on 24 V sensor supply line feeding precision ADC front-end. Use Value: Maintains 7.02 V stand-off while clamping 1 kV/µs spikes to 12.1 V, preserving measurement accuracy and isolation integrity. |
| Automotive ADAS Camera Module | Telecom Base Station DC Feeder Line |
Use Scenario: Shielding FPD-Link III serializer power pins from ESD and cable discharge events in rear-view camera harnesses. IC Role / Device Role: Primary board-level ESD/transient suppressor on 12 V bias rail before local LDO regulator. Use Value: Responds in <1 ns to ±15 kV contact ESD (IEC 61000-4-2), limiting voltage overshoot to safe levels for serializer ICs. | Use Scenario: Protecting remote radio unit (RRU) power inputs from lightning-induced surges on outdoor DC feeder cables. IC Role / Device Role: First-stage surge suppression on –48 V telecom supply before DC/DC converter input. Use Value: Absorbs 1500 W pulses without degradation, meeting Telcordia GR-1089-CORE Level 3 requirements for outdoor plant equipment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ8.0A | Lower peak pulse power (400 W), SMA package (smaller footprint, lower thermal mass) | Rated for commercial/industrial use only; not AEC-Q101 qualified | Acceptable for non-automotive 12 V systems where space is constrained and surge severity is moderate |
| 1.5KE8.2A | Same VBR range and 1500 W rating, but TO-204AA (DO-41) package and no AEC-Q101 or HE3 whisker certification | Lacks automotive qualification and high-reliability plating; higher thermal resistance than 1.5KA | Suitable for cost-sensitive industrial designs where automotive qualification and long-term whisker resistance are not required |
Compared with SMAJ8.0A and 1.5KE8.2A, the 1.5KA8.2AHE3/54 delivers superior thermal robustness (185 °C TJ), guaranteed automotive qualification, and proven reliability in high-vibration environments - making it the only choice for safety-critical vehicle subsystems requiring zero field failures.
Availability
1.5KA8.2AHE3/54 is available at Aetrix Electronics and suitable for automotive engine control, industrial motor drives, ADAS camera modules, and telecom base station power feeds requiring stable component supply across multi-year production cycles.
Supply support for 1.5KA8.2AHE3/54 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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for demanding industrial and automotive applications.
The 1.5KA series is part of Vishay's automotive TVS portfolio, engineered specifically for AEC-Q101 compliance, high-temperature operation, and robust transient immunity in powertrain and chassis electronics.
FAQ
What is the clamping voltage of the 1.5KA8.2AHE3/54 under maximum surge conditions?
The 1.5KA8.2AHE3/54 has a maximum clamping voltage (VC) of 12.1 V at its rated peak pulse current of 124 A (10/1000 µs waveform). This value is measured per ANSI/IEEE C62.35 and guarantees that downstream circuitry sees no more than 12.1 V during standardized surge events - critical for safeguarding 5 V and 3.3 V logic interfaces powered from a 12 V rail.
Is the 1.5KA8.2AHE3/54 suitable for use in under-hood automotive applications?
Yes, the 1.5KA8.2AHE3/54 is explicitly qualified to AEC-Q101 and rated for junction temperatures up to +185 °C. Its HE3 suffix confirms RoHS compliance and JESD201 Class 2 whisker resistance - both essential for under-hood deployment in ECUs, transmission controllers, and battery management systems exposed to extreme thermal cycling and vibration.
How does the 1.5KA8.2AHE3/54 differ from standard 1.5KE series TVS diodes?
The 1.5KA8.2AHE3/54 differs from the 1.5KE8.2A in three key ways: it uses Case Style 1.5KA (DO-201AD) with longer leads and higher thermal mass, carries AEC-Q101 qualification, and features the HE3 suffix denoting automotive-grade plating and whisker resistance. These distinctions make the 1.5KA8.2AHE3/54 suitable for mission-critical automotive use where the 1.5KE8.2A is limited to commercial/industrial applications.
What is the stand-off voltage (VWM) and why is it important for the 1.5KA8.2AHE3/54?
The stand-off voltage (VWM) of the 1.5KA8.2AHE3/54 is 7.02 V. This is the maximum continuous reverse voltage the device can withstand without significant leakage current (<200 µA at 25 °C). It ensures reliable non-conduction during normal 12 V system operation - preventing power loss, false triggering, or interference with upstream regulators or monitoring circuits.
Does the 1.5KA8.2AHE3/54 have polarity markings, and how is it installed?
Yes, the 1.5KA8.2AHE3/54 has a cathode band - a visible color stripe on the epoxy body - identifying the cathode terminal. For proper unidirectional transient suppression, the cathode must be connected to the system ground or lowest-potential reference plane, while the anode connects to the line being protected (e.g., 12 V supply or signal trace). Incorrect polarity renders the device ineffective against positive transients.
1.5KA8.2AHE3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- 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:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KA
1.5KA8.2AHE3/54 FAQ
1.How can I place an order for 1.5KA8.2AHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KA8.2AHE3/54 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 1.5KA8.2AHE3/54 reliable?
The price and inventory of 1.5KA8.2AHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KA8.2AHE3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KA8.2AHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KA8.2AHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KA8.2AHE3/54?
1.5KA8.2AHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KA8.2AHE3/54 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 1.5KA8.2AHE3/54?
For technical support, including 1.5KA8.2AHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KA8.2AHE3/54 requirements.
6.How does Aetrix verify that 1.5KA8.2AHE3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KA8.2AHE3/54 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 1.5KA8.2AHE3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KA8.2AHE3/54?
All 1.5KA8.2AHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KA8.2AHE3/54, 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 1.5KA8.2AHE3/54 part is unused and in its original packaging.
Return procedure for 1.5KA8.2AHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KA8.2AHE3/54 Tags
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