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Vishay General Semiconductor - Diodes Division 1.5KA8.2AHE3/73
- Part No.:
- 1.5KA8.2AHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KA8.2AHE3/73.pdf
- Description:
- TVS DIODE 7.02VWM 12.1VC 1.5KA
- Quantity:
- Payment:
- Shipping:
Inventory:3,347
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Product details
Overview
1.5KA8.2AHE3/73 from Vishay General Semiconductor is an automotive-grade unidirectional transient voltage suppressor (TVS) diode designed for robust overvoltage protection in harsh environments. It delivers 1500 W peak pulse power (10/1000 µs), clamps at ≤12.1 V under 124 A surge current, and operates across –65 °C to +185 °C junction temperature - deployed on power rails and signal lines of automotive sensor units and ECUs.
For engineers reviewing the 1.5KA8.2AHE3/73 datasheet, 1.5KA8.2AHE3/73 pinout, 1.5KA8.2AHE3/73 application, or 1.5KA8.2AHE3/73 equivalent, key selection criteria include its AEC-Q101 qualification, 7.79–8.61 V breakdown range, 7.02 V stand-off voltage, low 0.065 %/°C VBR tempco, and 200 A IFSM surge capability - all critical for automotive ECU and ADAS power rail hardening.
Technical Context
This TVS diode employs Vishay's patented PAR® construction for stable clamping under repeated transients and high-temperature operation up to 185 °C. Its unidirectional polarity and low incremental surge resistance ensure fast response (<1 ns) and minimal voltage overshoot during load dump or inductive switching events.
The device is rated for 1500 W peak pulse power with a 10/1000 µs waveform and exhibits 200 µA max reverse leakage at VWM (7.02 V) and 1000 µA at TJ = 150 °C - confirming suitability for long-life automotive modules where thermal derating and leakage stability are design-critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 µs) | 1500 W - sustains automotive load-dump surges without failure |
| Breakdown Voltage VBR | 7.79–8.61 V at 10 mA - defines precise clamping onset for 8.2 V nominal systems |
| Stand-off Voltage VWM | 7.02 V - ensures no conduction during normal 5–7 V rail operation |
| Clamping Voltage VC | ≤12.1 V at 124 A - limits downstream IC stress during ISO 7637-2 Pulse 5a events |
| Operating Temperature Range | –65 °C to +185 °C - supports under-hood placement per AEC-Q101 requirements |
| Surge Current IPPM | 124 A - handles high-energy transients from relay coils and motor drivers |
| Tempco of VBR | 0.065 %/°C - enables predictable clamping shift across engine bay thermal cycles |
Pinout & Package
Package: Case Style 1.5KA - molded epoxy body with matte tin-plated leads; UL 94 V-0 rated; RoHS-compliant HE3 suffix meets JESD201 Class 2 whisker test.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-voltage return path in unidirectional TVS configuration |
| Cathode | High-side surge input terminal | Marked by color band; connects to protected line (e.g., battery rail or sensor supply) |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Enables consistent clamping performance and reliability under repeated 1500 W surges |
| AEC-Q101 qualified | Validated for automotive use including temperature cycling, HTRB, and surge endurance |
| 10/1000 µs waveform rating | Matches ISO 7637-2 Pulse 5a test profile for 12 V vehicle systems |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., inductive kickback) |
| Solder dip 260 °C, 40 s | Supports standard lead-free reflow and wave soldering processes without degradation |
Applications
| Automotive Engine Control Unit (ECU) Power Input | ADAS Camera Module Supply Protection |
|---|---|
Use Scenario: Protects 12 V input rail of engine control units against load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between battery feed and DC/DC input stage. Use Value: Clamps transients to ≤12.1 V while surviving 1500 W pulses - preventing damage to LDOs and microcontrollers. |
Use Scenario: Shields 5 V or 3.3 V camera module power supply from ESD and cable discharge events in rear-view systems. IC Role / Device Role / Timing Role: Standoff-rated TVS (VWM = 7.02 V) placed upstream of point-of-load regulator. Use Value: 200 µA leakage at 7.02 V avoids quiescent current penalty; 185 °C rating supports compact, sealed housing designs. |
| Industrial Motor Drive Gate Driver Supply | Automotive HVAC Blower Control Board |
Use Scenario: Guards isolated gate driver auxiliary supply against cross-conduction-induced voltage spikes during IGBT switching. IC Role / Device Role / Timing Role: Fast-response TVS connected across secondary-side 15 V bias rail. Use Value: 124 A IPPM and <1 ns response limit voltage excursions below MOSFET VDS rating. |
Use Scenario: Safeguards microcontroller I/O and Hall-effect sensor lines from commutation noise in brushed DC blower motors. IC Role / Device Role / Timing Role: Low-capacitance TVS on LIN bus and PWM fan control lines. Use Value: 0.065 %/°C VBR tempco ensures stable clamping across cabin temperature extremes (–40 °C to +85 °C). |
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, 8.0 V nominal VBR (7.22–8.82 V) | Rated for commercial/industrial use only; not AEC-Q101 qualified | Use where space is constrained and automotive qualification is not required |
| 1.5KE8.2A | Same VBR range but TO-204AA (DO-41) package; lower thermal mass; 175 °C max TJ | Lacks AEC-Q101 validation and PAR® construction; higher clamping voltage (13.4 V) | Select only for cost-sensitive non-automotive designs with relaxed thermal and reliability demands |
Compared with SMBJ8.0A and 1.5KE8.2A, the 1.5KA8.2AHE3/73 provides superior automotive qualification, higher surge robustness (1500 W vs. 600 W or 1500 W with inferior clamping), and thermally stable PAR® architecture - making it the sole choice for under-hood ECU and ADAS power rail protection.
Availability
1.5KA8.2AHE3/73 is available at Aetrix Electronics and suitable for automotive ECU power inputs, ADAS camera modules, industrial motor drive gate supplies, and HVAC blower control boards requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 1.5KA8.2AHE3/73 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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The 1.5KA series was engineered specifically for AEC-Q101-compliant transient suppression in automotive power systems - emphasizing high-temperature stability, repeatable clamping, and robust surge endurance under real-world load-dump conditions.
FAQ
What is the exact breakdown voltage range for the 1.5KA8.2AHE3/73?
The 1.5KA8.2AHE3/73 has a guaranteed breakdown voltage (VBR) range of 7.79 V to 8.61 V at 10 mA test current, measured per ANSI/IEEE C62.35 standards. This tight tolerance ensures reliable clamping onset in 8.2 V nominal systems and aligns with automotive voltage rail specifications. The 1.5KA8.2AHE3/73 achieves this via precision doping and PAR® construction, delivering consistent behavior across temperature and lifetime.
Is the 1.5KA8.2AHE3/73 qualified for automotive applications?
Yes, the 1.5KA8.2AHE3/73 is explicitly AEC-Q101 qualified and designated as high-reliability/automotive grade (Base P/NHE3). It undergoes rigorous testing for temperature cycling, high-temperature reverse bias, and surge endurance - meeting requirements for under-hood deployment in ECUs, ADAS, and body control modules. The 1.5KA8.2AHE3/73 data sheet confirms compliance in Note (1) on page 3.
What is the maximum clamping voltage of the 1.5KA8.2AHE3/73 under surge conditions?
The 1.5KA8.2AHE3/73 clamps to a maximum of 12.1 V when subjected to its rated peak pulse current of 124 A (10/1000 µs waveform). This value is specified in the Electrical Characteristics table and reflects worst-case behavior at TA = 25 °C. The 1.5KA8.2AHE3/73 maintains low clamping due to low incremental surge resistance and optimized junction design.
Does the 1.5KA8.2AHE3/73 have unidirectional or bidirectional polarity?
The 1.5KA8.2AHE3/73 is unidirectional only, as confirmed in the FEATURES section ("Available in uni-directional polarity only") and indicated by the cathode band marking on the package. It conducts only during reverse-biased overvoltage events and blocks forward current - making it suitable for DC power rail protection where polarity is fixed. Bidirectional variants are not offered in the 1.5KA family.
What packaging format is used for the 1.5KA8.2AHE3/73?
The 1.5KA8.2AHE3/73 is supplied in 13" diameter paper tape and reel with a base quantity of 1400 units, using package code 54. The device uses Case Style 1.5KA - a molded epoxy axial-leaded package with 0.375" (9.5 mm) lead length, UL 94 V-0 rating, and matte tin-plated leads compliant with J-STD-002 and JESD22-B102.
1.5KA8.2AHE3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- PAR®
- Packaging:
- Tape & Box (TB)
- 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
1.5KA8.2AHE3/73 FAQ
1.How can I place an order for 1.5KA8.2AHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KA8.2AHE3/73 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 1.5KA8.2AHE3/73 reliable?
The price and inventory of 1.5KA8.2AHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KA8.2AHE3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KA8.2AHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KA8.2AHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KA8.2AHE3/73?
1.5KA8.2AHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KA8.2AHE3/73 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 1.5KA8.2AHE3/73?
For technical support, including 1.5KA8.2AHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KA8.2AHE3/73 requirements.
6.How does Aetrix verify that 1.5KA8.2AHE3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KA8.2AHE3/73 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 1.5KA8.2AHE3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KA8.2AHE3/73?
All 1.5KA8.2AHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KA8.2AHE3/73, 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 1.5KA8.2AHE3/73 part is unused and in its original packaging.
Return procedure for 1.5KA8.2AHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KA8.2AHE3/73 Tags
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