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Vishay General Semiconductor - Diodes Division 1.5KA12HE3/54
- Part No.:
- 1.5KA12HE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KA12HE3/54.pdf
- Description:
- TVS DIODE 9.72VWM 17.3VC 1.5KA
- Quantity:
- Payment:
- Shipping:
Inventory:8,996
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Product details
Overview
1.5KA12HE3/54 from Vishay General Semiconductor is a unidirectional automotive-grade transient voltage suppressor (TVS) diode in the 1.5KA case style, rated for 1500 W peak pulse power (10/1000 µs), 10.8–13.2 V breakdown voltage, and 185 °C maximum junction temperature. It provides clamping protection for MOSFETs and ICs against inductive switching transients in engine control units and ABS modules.
For engineers reviewing the 1.5KA12HE3/54 datasheet, 1.5KA12HE3/54 pinout, 1.5KA12HE3/54 application, or 1.5KA12HE3/54 equivalent, key selection criteria include clamping voltage at rated IPPM (17.3 V), AEC Q101 qualification, RoHS-compliant HE3 packaging, and 2.0 µA max reverse leakage at 9.72 V stand-off voltage.
Technical Context
This TVS diode uses patented PAR® construction to achieve low incremental surge resistance and fast response time (<1 ns), enabling effective suppression of ESD and load-dump transients per ISO 7637-2. Its unidirectional polarity and 10/1000 µs waveform rating align with automotive surge immunity requirements.
The device operates across –65 °C to +185 °C, with thermal derating above 25 °C ambient and validated performance under JESD201 Class 2 whisker testing. Its 0.076 %/°C VBR temperature coefficient ensures stable clamping behavior over wide temperature ranges in under-hood environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 µs) | 1500 W - withstands high-energy automotive load-dump surges without failure |
| Breakdown Voltage VBR | 10.8–13.2 V at 1.0 mA - defines minimum clamping threshold for circuit protection |
| Clamping Voltage VC | 17.3 V at 86.7 A IPPM - limits transient voltage seen by downstream ICs during surge events |
| Stand-off Voltage VWM | 9.72 V - maximum continuous reverse voltage before significant leakage begins |
| Reverse Leakage ID | 2.0 µA at VWM, 150 °C - ensures minimal power loss and signal integrity in high-temp operation |
| Junction Temperature Range | –65 °C to +185 °C - supports placement in harsh under-hood locations including transmission control units |
| AEC-Q101 Qualified | Yes - certified for automotive electronics per stress test requirements including HTRB, HTGB, and TCT |
Pinout & Package
Package: Case Style 1.5KA - molded epoxy body with matte tin-plated leads, UL 94 V-0 rated, lead length 9.5 mm, diameter 4.8–5.3 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias | Connected to ground or low-side reference in unidirectional TVS configuration |
| Cathode | Current exit point in forward bias; marked by color band | Connected to protected line (e.g., CAN_H, LIN, sensor supply) to clamp positive transients |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Enables uniform current distribution across junction area, reducing localized thermal stress during 1500 W surges |
| AEC-Q101 qualification | Validates reliability for automotive applications including engine management, ADAS sensors, and body control modules |
| HE3 suffix compliance | Meets JESD201 Class 2 whisker resistance, critical for long-term solder joint integrity in vibration-prone systems |
| 10/1000 µs waveform rating | Matches ISO 7637-2 Pulse 5a (load dump) test profile for 12 V vehicle electrical systems |
| Low clamping ratio (VC/VBR ≈ 1.6) | Minimizes overvoltage exposure to protected ICs while maintaining robust surge handling capability |
Applications
| Engine Control Unit (ECU) Protection | Anti-lock Braking System (ABS) Sensor Interface |
|---|---|
Use Scenario: Protects microcontroller I/O and power rails from load-dump transients generated during alternator regulation faults in 12 V automotive systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and ECU input stage to clamp voltage spikes above 17.3 V. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic circuits during 1500 W, 10/1000 µs surges per ISO 7637-2. | Use Scenario: Shields Hall-effect wheel speed sensors and their signal conditioning amplifiers from inductive kickback when solenoid valves switch. IC Role / Device Role / Timing Role: TVS mounted at sensor connector interface to absorb fast-rising transients (<1 ns rise time) before reaching analog front-end. Use Value: Maintains signal fidelity and prevents false triggering in ABS controllers by limiting transient overshoot to ≤17.3 V at 86.7 A. |
| Body Control Module (BCM) Power Input | Infotainment System USB/UART Lines |
Use Scenario: Guards 12 V input stage of BCM against jump-start induced reverse-polarity and surge events. IC Role / Device Role / Timing Role: Primary clamping device on main power entry, positioned upstream of DC/DC converters and LDOs. Use Value: Sustains 185 °C junction temperature during repeated surges, ensuring long-term reliability in cabin-located modules. | Use Scenario: Protects low-voltage UART and USB data lines connecting head unit to telematics control units from ESD and cable discharge events. IC Role / Device Role / Timing Role: Secondary-level TVS on signal lines with 9.72 V stand-off to avoid interference with normal 3.3 V logic signaling. Use Value: Limits leakage to 2.0 µA at operating voltage, preserving signal integrity and minimizing standby current drain. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ12AHE3/52 | 600 W peak pulse power, 12 V nominal, AEC-Q101 qualified, SMB package (smaller footprint) | Limited to lower-energy transients; not suitable for full load-dump events | Select when space-constrained PCB layout requires smaller package and surge energy is ≤600 W |
| 1.5KE12A | 1500 W rating but non-automotive grade, no AEC-Q101 qualification, higher leakage (5 µA), 175 °C max TJ | Not approved for safety-critical automotive systems; limited to industrial/commercial use | Choose only for cost-sensitive non-automotive designs where AEC-Q101 is not mandated |
Compared with SMBJ12AHE3/52 and 1.5KE12A, the 1.5KA12HE3/54 uniquely combines 1500 W surge capability, AEC-Q101 qualification, and 185 °C junction rating-making it the only option validated for under-hood engine control and braking system protection.
Availability
1.5KA12HE3/54 is available at Aetrix Electronics and suitable for engine control units, anti-lock braking systems, and body control modules requiring stable component supply across extended automotive production lifecycles.
Supply support for 1.5KA12HE3/54 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, and optoelectronics for automotive, industrial, and computing markets.
The 1.5KA series was engineered specifically for automotive transient suppression, emphasizing AEC-Q101 compliance, high-temperature operation up to 185 °C, and robustness against repetitive load-dump and ESD events.
FAQ
What is the clamping voltage of the 1.5KA12HE3/54 at its rated peak pulse current?
The 1.5KA12HE3/54 has a maximum clamping voltage (VC) of 17.3 V at its rated peak pulse current (IPPM) of 86.7 A, measured using a 10/1000 µs waveform. This value ensures protected downstream components-such as microcontrollers or gate drivers-are exposed to no more than 17.3 V during worst-case surge events, directly supporting ISO 7637-2 Pulse 5a compliance.
Is the 1.5KA12HE3/54 qualified for automotive applications?
Yes, the 1.5KA12HE3/54 is AEC-Q101 qualified and designated as high-reliability/automotive grade (Base P/NHE3). It undergoes rigorous stress testing-including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling-to validate performance in engine control, braking, and body electronics systems.
What does the HE3 suffix indicate on the 1.5KA12HE3/54?
The HE3 suffix on the 1.5KA12HE3/54 indicates RoHS compliance, high-reliability construction, and successful completion of JESD201 Class 2 whisker testing. This ensures long-term solder joint integrity under thermal cycling and mechanical vibration-critical for automotive under-hood deployment where tin whisker growth could cause latent field failures.
How does the 1.5KA12HE3/54 differ from standard 1.5KE series TVS diodes?
The 1.5KA12HE3/54 differs from the 1.5KE12A by offering AEC-Q101 qualification, 185 °C maximum junction temperature (vs. 175 °C), lower reverse leakage (2.0 µA vs. 5.0 µA at VWM), and enhanced thermal robustness via PAR® construction. These differences make the 1.5KA12HE3/54 suitable for safety-critical automotive applications where the 1.5KE12A is restricted to commercial/industrial use.
What is the stand-off voltage and reverse leakage specification for the 1.5KA12HE3/54?
The 1.5KA12HE3/54 has a stand-off voltage (VWM) of 9.72 V and a maximum reverse leakage current (ID) of 2.0 µA at VWM and 150 °C. This low leakage preserves signal integrity on protected lines and minimizes standby power loss-essential for always-on automotive subsystems such as telematics and gateway modules.
1.5KA12HE3/54 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):
- 9.72V
- Voltage - Breakdown (Min):
- 10.8V
- Voltage - Clamping (Max) @ Ipp:
- 17.3V
- Current - Peak Pulse (10/1000µs):
- 86.7A
- 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
1.5KA12HE3/54 FAQ
1.How can I place an order for 1.5KA12HE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KA12HE3/54 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 1.5KA12HE3/54 reliable?
The price and inventory of 1.5KA12HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KA12HE3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KA12HE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KA12HE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KA12HE3/54?
1.5KA12HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KA12HE3/54 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 1.5KA12HE3/54?
For technical support, including 1.5KA12HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KA12HE3/54 requirements.
6.How does Aetrix verify that 1.5KA12HE3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KA12HE3/54 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 1.5KA12HE3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KA12HE3/54?
All 1.5KA12HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KA12HE3/54, 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 1.5KA12HE3/54 part is unused and in its original packaging.
Return procedure for 1.5KA12HE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KA12HE3/54 Tags
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