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Vishay General Semiconductor - Diodes Division 1.5KA11AHE3/73
- Part No.:
- 1.5KA11AHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KA11AHE3/73.pdf
- Description:
- TVS DIODE 9.4VWM 15.6VC 1.5KA
- Quantity:
- Payment:
- Shipping:
Inventory:7,624
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Product details
Overview
1.5KA11AHE3/73 from Vishay General Semiconductor is a unidirectional automotive-grade transient voltage suppressor (TVS) diode with 1500 W peak pulse power (10/1000 µs), 10.5–11.6 V breakdown voltage, and AEC-Q101 qualification. It clamps transients to ≤15.6 V at 96.2 A, operates from –65 °C to +185 °C, and protects MOSFETs and sensor signal lines in automotive power electronics.
For engineers reviewing the 1.5KA11AHE3/73 datasheet, 1.5KA11AHE3/73 pinout, 1.5KA11AHE3/73 application, or 1.5KA11AHE3/73 equivalent, key selection criteria include its 1.0 mA test current, 9.40 V stand-off voltage, 5.0 µA max reverse leakage at TJ = 150 °C, and HE3 suffix confirming JESD201 Class 2 whisker resistance and RoHS compliance.
Technical Context
This TVS diode uses Vishay's patented PAR® construction for stable clamping under high-temperature stress and fast response to ESD and load-dump transients. Its unidirectional polarity and low incremental surge resistance enable precise overvoltage protection on DC power rails and signal paths without forward conduction interference.
Designed for automotive environments, it meets AEC-Q101 requirements for temperature cycling, humidity, and mechanical shock. The 1.5KA case style supports high-reliability soldering (260 °C, 40 s) and UL 94 V-0 molded epoxy encapsulation for flame resistance.
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 | 10.5–11.6 V at 1.0 mA - defines precise clamping threshold for 12 V systems |
| Clamping Voltage VC | 15.6 V at 96.2 A - limits downstream voltage stress during worst-case transients |
| Stand-off Voltage VWM | 9.40 V - ensures no conduction during normal 12 V rail operation |
| Reverse Leakage ID | 5.0 µA max at VWM, TJ = 150 °C - minimal power loss in hot under-hood conditions |
| Junction Temp Range | –65 °C to +185 °C - supports engine bay and transmission control unit placement |
| AEC-Q101 Qualified | Yes - validated for automotive reliability including temperature cycling and HAST |
Pinout & Package
Package: Case Style 1.5KA - axial-leaded, molded epoxy body with matte tin-plated leads; UL 94 V-0 rated; lead length 0.375" (9.5 mm); diameter 0.210" (5.3 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias | Connected to ground or low-side return path in unidirectional TVS configuration |
| Cathode | Current exit point in forward bias; marked by color band | Connected to protected line (e.g., battery rail or sensor output) to clamp positive transients |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Enables stable VBR and low clamping variation across temperature and lifetime |
| 1500 W peak pulse rating (10/1000 µs) | Withstands ISO 7637-2 Pulse 5a load-dump events in 12 V vehicle systems |
| HE3 suffix compliance | Meets JESD201 Class 2 whisker resistance and RoHS 2002/95/EC requirements |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., inductive switch-off) |
| Automotive grade (AEC-Q101) | Qualified for use in safety-critical ECUs, body controllers, and ADAS power domains |
Applications
| Automotive Body Control Module (BCM) | Engine Control Unit (ECU) Power Input |
|---|---|
Use Scenario: Protects microcontroller I/O and CAN transceiver power rails from alternator load-dump and jump-start surges. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between battery feed and local LDO input. Use Value: Limits transient voltage to ≤15.6 V, preventing latch-up or permanent damage to 16 V-rated regulators and logic ICs. | Use Scenario: Shields 5 V/3.3 V domain supplies from 12 V rail transients induced by fuel injector or solenoid switching. IC Role / Device Role / Timing Role: Primary overvoltage suppression element upstream of DC-DC converter input. Use Value: Withstands 200 A IFSM surge and maintains <5 µA leakage at 150 °C junction temp for long-term under-hood reliability. |
| ADAS Camera Power Interface | Electric Power Steering (EPS) Sensor Signal Line |
Use Scenario: Guards MIPI CSI-2 interface power pins against ESD and cable discharge events in rear-view camera modules. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF) TVS on 12 V bias rail feeding image sensor analog front-end. Use Value: Clamps 8 kV contact ESD per IEC 61000-4-2 to safe levels while adding negligible noise to analog video signals. | Use Scenario: Protects Hall-effect position sensor outputs from inductive kickback when EPS motor phases commutate. IC Role / Device Role / Timing Role: Signal-line TVS on differential analog output routed to MCU ADC inputs. Use Value: Fast response time and 15.6 V clamping prevent ADC saturation and preserve torque-sensing accuracy during transient events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11AHE3/52 | 600 W rating, SMB package, same VBR range (10.5–11.6 V), lower IPPM (53.3 A) | Suitable for space-constrained PCBs but not for full load-dump duty cycles | Select when board area is critical and peak surge energy is below 150 mJ |
| 1.5KE11A | Same 1500 W rating and VBR, but TO-204AA (DO-4) package, non-automotive grade, no AEC-Q101 | Lacks automotive qualification and high-temp reliability validation | Select only for industrial or consumer applications where AEC-Q101 is not required |
Compared with SMBJ11AHE3/52 and 1.5KE11A, the 1.5KA11AHE3/73 delivers higher surge robustness in an axial-leaded automotive-qualified package, enabling direct replacement in legacy BCM designs while maintaining AEC-Q101 compliance and thermal margin up to +185 °C.
Availability
1.5KA11AHE3/73 is available at Aetrix Electronics and suitable for automotive body control modules, engine control units, ADAS camera interfaces, and electric power steering systems requiring stable component supply across extended temperature and lifecycle demands.
Supply support for 1.5KA11AHE3/73 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 diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability and automotive qualification.
The 1.5KA series is engineered specifically for high-energy transient suppression in automotive power systems, targeting AEC-Q101 compliance, extended temperature operation, and robustness against repetitive load-dump and ISO 7637-2 pulses.
FAQ
What is the clamping voltage of the 1.5KA11AHE3/73 at its rated peak pulse current?
The 1.5KA11AHE3/73 has a maximum clamping voltage (VC) of 15.6 V at its rated peak pulse current (IPPM) of 96.2 A, measured using the standard 10/1000 µs waveform. This value ensures downstream components see limited overvoltage stress during automotive load-dump events, and is verified per ANSI/IEEE C62.35 test conditions.
Is the 1.5KA11AHE3/73 qualified for automotive use?
Yes, the 1.5KA11AHE3/73 is AEC-Q101 qualified and designated as high-reliability/automotive grade (Base P/NHE3). It undergoes rigorous testing for temperature cycling, humidity, mechanical shock, and solderability, making it suitable for engine control units, body modules, and ADAS systems where automotive-grade reliability is mandatory.
What does the HE3 suffix mean on the 1.5KA11AHE3/73?
The HE3 suffix on the 1.5KA11AHE3/73 indicates RoHS compliance, high-reliability construction, and successful completion of JESD201 Class 2 whisker resistance testing. It also confirms matte tin plating compliant with J-STD-002 and JESD22-B102 solderability standards-critical for long-term interconnect integrity in automotive assemblies.
How does the 1.5KA11AHE3/73 differ from the standard 1.5KA11A part?
The 1.5KA11AHE3/73 includes the HE3 suffix denoting enhanced reliability features: JESD201 Class 2 whisker resistance, RoHS compliance, and AEC-Q101 qualification. The base 1.5KA11A lacks these certifications and is not approved for automotive applications requiring formal qualification evidence or high-temperature reliability assurance.
What is the maximum operating junction temperature for the 1.5KA11AHE3/73?
The 1.5KA11AHE3/73 has a maximum operating junction temperature (TJ) of +185 °C, validated per AEC-Q101 stress testing. This enables reliable operation in under-hood environments such as near engines or transmissions, where ambient temperatures exceed 125 °C and thermal derating must be minimized.
1.5KA11AHE3/73 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):
- 9.4V
- Voltage - Breakdown (Min):
- 10.5V
- Voltage - Clamping (Max) @ Ipp:
- 15.6V
- Current - Peak Pulse (10/1000µs):
- 96.2A
- 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
1.5KA11AHE3/73 FAQ
1.How can I place an order for 1.5KA11AHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KA11AHE3/73 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 1.5KA11AHE3/73 reliable?
The price and inventory of 1.5KA11AHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KA11AHE3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KA11AHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KA11AHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KA11AHE3/73?
1.5KA11AHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KA11AHE3/73 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 1.5KA11AHE3/73?
For technical support, including 1.5KA11AHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KA11AHE3/73 requirements.
6.How does Aetrix verify that 1.5KA11AHE3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KA11AHE3/73 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 1.5KA11AHE3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KA11AHE3/73?
All 1.5KA11AHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KA11AHE3/73, 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 1.5KA11AHE3/73 part is unused and in its original packaging.
Return procedure for 1.5KA11AHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KA11AHE3/73 Tags
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