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Vishay General Semiconductor - Diodes Division 1.5KA11AHE3/51
- Part No.:
- 1.5KA11AHE3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KA11AHE3/51.pdf
- Description:
- TVS DIODE 9.4VWM 15.6VC 1.5KA
- Quantity:
- Payment:
- Shipping:
Inventory:8,908
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Product details
Overview
1.5KA11AHE3/51 from Vishay General Semiconductor is an automotive-grade unidirectional transient voltage suppressor (TVS) diode designed for high-energy surge protection in harsh environments. It delivers 1500 W peak pulse power (10/1000 µs), clamps at 15.6 V at 96.2 A, and operates up to +185 °C junction temperature - used to protect automotive sensor signal lines, MOSFET gates, and microcontroller I/O against load dump and inductive switching transients.
For engineers reviewing the 1.5KA11AHE3/51 datasheet, 1.5KA11AHE3/51 pinout, 1.5KA11AHE3/51 application, or 1.5KA11AHE3/51 equivalent, key selection criteria include its AEC-Q101 qualification, 10.5–11.6 V breakdown range, low 0.076 %/°C VBR tempco, and RoHS-compliant HE3 package with matte tin leads meeting JESD201 Class 2 whisker resistance.
Technical Context
This TVS diode employs Vishay's patented PAR® construction for stable clamping under repeated surge stress and high-temperature operation. Its unidirectional polarity enables precise reverse-biased protection of DC rails and signal paths, with a fast response time (<1 ns) and low incremental surge resistance ensuring minimal overshoot during 10/1000 µs transients.
Rated for automotive use per AEC-Q101, it supports continuous operation from –65 °C to +185 °C and withstands 200 A non-repetitive forward surge (8.3 ms half-sine). The device features a molded epoxy case (UL 94 V-0), color-banded cathode marking, and solderability validated to J-STD-002 and JESD22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 µs) | 1500 W - sustains automotive load-dump surges without degradation |
| Breakdown Voltage VBR | 10.5–11.6 V at 1.0 mA - defines precise clamping onset for 12 V systems |
| Clamping Voltage VC | 15.6 V at 96.2 A - limits protected circuit voltage during full-rated surge |
| Junction Temperature Range | –65 °C to +185 °C - enables under-hood deployment in modern vehicles |
| Surge Current IPPM | 96.2 A (10/1000 µs) - quantifies maximum transient energy absorption capability |
| Tempco of VBR | 0.076 %/°C - ensures stable clamping across wide ambient temperature swings |
| RoHS & AEC-Q101 | Compliant - meets automotive reliability and environmental requirements |
Pinout & Package
Package: Case Style 1.5KA - axial-leaded, molded epoxy body (UL 94 V-0), 0.375" (9.5 mm) lead length, cathode indicated by color band. Leads are matte tin-plated, qualified to JESD201 Class 2 whisker test and solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / surge return path | Connected to ground or low-impedance return in unidirectional TVS configuration |
| Cathode | Protected line connection / clamping node | Connected to the line being protected (e.g., sensor supply or signal); color band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Enables stable clamping performance and long-term reliability under repeated high-energy surges |
| AEC-Q101 qualification | Validated for automotive under-hood applications including engine control and ADAS sensor interfaces |
| 1500 W peak pulse rating | Meets ISO 7637-2 and SAE J1113-11 surge immunity requirements for 12 V systems |
| Low 0.076 %/°C VBR tempco | Minimizes clamping voltage drift over temperature - critical for precision rail protection |
| HE3 RoHS-compliant packaging | Matte tin leads pass JESD201 Class 2 whisker testing, ensuring long-term solder joint integrity |
Applications
| Automotive Engine Control Unit (ECU) Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V power inputs and CAN/LIN bus lines in engine control modules exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between power rail and ground to limit transient overvoltage before it reaches MCU power pins or transceivers. Use Value: Clamps to 15.6 V at 96.2 A, preventing damage to 16 V-rated power management ICs and maintaining system uptime during cold-cranking events. | Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loops) from ESD and inductive kickback in factory automation sensors. IC Role / Device Role / Timing Role: Placed in series with signal line and shunted to ground to absorb fast transients while preserving signal fidelity below 100 kHz bandwidth. Use Value: Junction capacitance <100 pF at VWM ensures minimal signal distortion; 185 °C max TJ supports operation near motor drives. |
| Automotive ADAS Camera Module | Telecom Power Supply Input Stage |
Use Scenario: Shielding FPD-Link III or GMSL video data lines and 5 V bias supplies in surround-view camera systems. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS on each differential pair and supply rail to suppress ESD (IEC 61000-4-2) and ISO 10605 pulses. Use Value: Fast sub-nanosecond response prevents pixel corruption; AEC-Q101 qualification ensures field reliability in vibration-prone mounting locations. | Use Scenario: Front-end surge suppression on 48 V telecom rectifier outputs feeding PoE injectors and baseband processors. IC Role / Device Role / Timing Role: Primary clamping device on DC input bus, coordinated with upstream MOVs to handle multi-staged lightning-induced surges. Use Value: 1500 W rating handles 10/1000 µs surges per IEC 61000-4-5 Level 4; 200 A IFSM withstands repetitive AC line faults. |
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 | Same VBR range (10.5–11.6 V), lower 600 W PPPM rating, SMB surface-mount package | Not AEC-Q101 qualified; suited for commercial-grade PCB space-constrained designs | Select when board area is limited and automotive qualification is not required |
| 1.5KE11A | Same VBR/VC, 1500 W rating, but legacy DO-201 package and no AEC-Q101 or HE3 whisker qualification | Lacks automotive reliability validation and RoHS-compliant lead finish | Acceptable only for cost-sensitive industrial prototypes where long-term under-hood life is not mandated |
Compared with SMBJ11AHE3/52 and 1.5KE11A, the 1.5KA11AHE3/51 uniquely combines AEC-Q101 qualification, 1500 W surge capacity, and JESD201 Class 2 whisker resistance - making it the only choice for production automotive electronics requiring zero-field-failure reliability.
Availability
1.5KA11AHE3/51 is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface development, and telecom power supply hardening requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 1.5KA11AHE3/51 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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for demanding industrial and automotive applications.
The 1.5KA family was engineered specifically for automotive transient suppression - delivering robust AEC-Q101-compliant performance in under-hood environments where thermal stability, surge endurance, and long-term reliability are non-negotiable.
FAQ
What is the breakdown voltage range of the 1.5KA11AHE3/51?
The 1.5KA11AHE3/51 has a guaranteed breakdown voltage (VBR) range of 10.5 V to 11.6 V at 1.0 mA test current, measured per ANSI/IEEE C62.35. This tight tolerance ensures consistent clamping behavior across production lots and supports reliable protection of 12 V nominal systems without overdesigning downstream voltage margins.
Is the 1.5KA11AHE3/51 qualified for automotive use?
Yes, the 1.5KA11AHE3/51 is explicitly AEC-Q101 qualified and designated as high-reliability/automotive grade in Vishay's documentation. Its construction, testing, and packaging (including HE3 whisker-resistant leads) meet the full scope of AEC-Q101 requirements for transient voltage suppressors, enabling use in engine control, ADAS, and body electronics.
What is the clamping voltage of the 1.5KA11AHE3/51 at its rated surge current?
The 1.5KA11AHE3/51 clamps to a maximum of 15.6 V at its peak pulse current (IPPM) of 96.2 A under the standard 10/1000 µs waveform. This value is specified in the Electrical Characteristics table and reflects worst-case voltage seen by protected circuitry during full-rated surge events.
Does the 1.5KA11AHE3/51 have bidirectional polarity?
No, the 1.5KA11AHE3/51 is available in uni-directional polarity only, as confirmed in the Features section of Vishay document 88300. Its cathode is marked by a color band, and it is intended for DC rail or signal-line protection where reverse conduction is not required.
What package type does the 1.5KA11AHE3/51 use, and what are its key mechanical attributes?
The 1.5KA11AHE3/51 uses Vishay's Case Style 1.5KA - an axial-leaded, molded epoxy package with UL 94 V-0 flammability rating. Key attributes include 0.375" (9.5 mm) lead length, matte tin-plated leads qualified to JESD201 Class 2 for whisker resistance, and solderability validated per J-STD-002 and JESD22-B102.
1.5KA11AHE3/51 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- PAR®
- Packaging:
- Bulk
- 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
1.5KA11AHE3/51 FAQ
1.How can I place an order for 1.5KA11AHE3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KA11AHE3/51 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 1.5KA11AHE3/51 reliable?
The price and inventory of 1.5KA11AHE3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KA11AHE3/51 is usually 5 days.
3.What payment methods are accepted for 1.5KA11AHE3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KA11AHE3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KA11AHE3/51?
1.5KA11AHE3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KA11AHE3/51 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 1.5KA11AHE3/51?
For technical support, including 1.5KA11AHE3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KA11AHE3/51 requirements.
6.How does Aetrix verify that 1.5KA11AHE3/51 is sourced from the original manufacturer or authorized distributors?
All 1.5KA11AHE3/51 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 1.5KA11AHE3/51 meets industry standards.
7.What is the process for return or replacement of 1.5KA11AHE3/51?
All 1.5KA11AHE3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KA11AHE3/51, 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 1.5KA11AHE3/51 part is unused and in its original packaging.
Return procedure for 1.5KA11AHE3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KA11AHE3/51 Tags
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