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Vishay General Semiconductor - Diodes Division 1.5KA11AHE3/54
- Part No.:
- 1.5KA11AHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KA11AHE3/54.pdf
- Description:
- TVS DIODE 9.4VWM 15.6VC 1.5KA
- Quantity:
- Payment:
- Shipping:
Inventory:2,077
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Product details
Overview
1.5KA11AHE3/54 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), 10.5–11.6 V breakdown voltage, and 96.2 A peak pulse current. It features AEC-Q101 qualification, 185 °C max junction temperature, and RoHS-compliant HE3 packaging - deployed to protect MOSFETs and sensor signal lines in automotive powertrain control units.
For engineers reviewing the 1.5KA11AHE3/54 datasheet, 1.5KA11AHE3/54 pinout, 1.5KA11AHE3/54 application, or 1.5KA11AHE3/54 equivalent, key selection criteria include clamping voltage (15.6 V at 96.2 A), stand-off voltage (9.40 V), reverse leakage (5.0 µA at 25 °C), thermal stability up to 185 °C, and compliance with AEC-Q101 for under-hood automotive use.
Technical Context
This TVS diode employs patented PAR® construction for low incremental surge resistance and fast response time (<1 ns), enabling robust suppression of inductive-switching transients in high-temperature environments. Its unidirectional polarity and 10/1000 µs waveform-rated 1500 W capability make it suitable for protecting sensitive inputs against load-dump and ISO 7637-2 pulses.
The device operates across –65 °C to +185 °C junction temperature range and maintains stable breakdown voltage with a temperature coefficient of 0.076 %/°C. Its matte tin-plated leads meet J-STD-002 and JESD22-B102 solderability standards, and the HE3 suffix confirms JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 µs) | 1500 W - withstands automotive load-dump surges without failure |
| Breakdown Voltage VBR | 10.5–11.6 V at 1.0 mA - defines precise clamping onset threshold |
| Clamping Voltage VC | 15.6 V at 96.2 A - limits protected circuit voltage during full-rated surge |
| Stand-off Voltage VWM | 9.40 V - maximum continuous reverse voltage before leakage exceeds 5.0 µA |
| Junction Temperature Range | –65 °C to +185 °C - supports under-hood placement in engine control modules |
| AEC-Q101 Qualified | Yes - validated for automotive reliability per stress test requirements |
| RoHS & Whisker Compliance | HE3 suffix - meets RoHS 2002/95/EC and JESD201 Class 2 |
Pinout & Package
Package: Case Style 1.5KA - molded epoxy body with UL 94 V-0 rating, 0.375" (9.5 mm) lead length, axial-leaded DO-201AD-compatible outline. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to ground or lower-potential rail in unidirectional TVS configuration |
| Cathode | Reverse-biased clamping node | Connected to protected line; conducts during overvoltage to clamp to ≤15.6 V |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Reduces incremental surge resistance for tighter clamping and lower let-through energy |
| 1500 W peak pulse rating (10/1000 µs) | Meets ISO 7637-2 Pulse 5a/b severity levels for 12 V automotive systems |
| AEC-Q101 qualification | Validated for temperature cycling, HTRB, HTGB, and mechanical shock per automotive standard |
| 185 °C max junction temperature | Enables direct mounting near heat sources (e.g., ignition coils, DC-DC converters) |
| Low 0.076 %/°C VBR tempco | Minimizes drift in clamping threshold across wide ambient temperature ranges |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive I/O Protection |
|---|---|
Use Scenario: Protecting microcontroller GPIO and CAN transceiver inputs from load-dump transients during alternator regulation faults. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed at board-level input filter stage. Use Value: Limits voltage to ≤15.6 V during 1500 W surges, preventing latch-up or gate oxide damage in 3.3 V/5 V logic interfaces. | Use Scenario: Safeguarding analog sensor inputs (e.g., current shunt monitors) against inductive kickback from contactor switching. IC Role / Device Role / Timing Role: Primary overvoltage protection device on 24 V supply rails feeding isolated ADC front-ends. Use Value: Clamps transients within <1 ns while maintaining 9.40 V stand-off, ensuring uninterrupted measurement integrity. |
| Automotive Body Control Module (BCM) | Telecom Power Supply Input Stage |
Use Scenario: Shielding LIN bus transceivers and LED driver ICs from battery reversal and jump-start surges. IC Role / Device Role / Timing Role: Bidirectional protection not applicable; this unidirectional device used with series blocking diode for reverse-polarity tolerance. Use Value: Withstands 200 A 8.3 ms surge (IFSM), enabling robustness against accidental 24 V jump-start events. | Use Scenario: Front-end transient suppression on AC/DC adapter outputs powering base station control logic. IC Role / Device Role / Timing Role: Secondary clamping stage after MOV-based primary protection, handling residual fast-rising edges. Use Value: Low capacitance (<100 pF at VWM) avoids signal distortion on 12 V bias rails feeding high-speed monitoring circuits. |
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 (smaller footprint), same VBR range (10.5–11.6 V), lower IPPM (53.3 A) | Lower power handling limits use to sub-1 kW surge environments; not AEC-Q101 qualified | Select when board space is constrained and surge severity is limited to ISO 7637-2 Pulse 1/2. |
| 1.5KE11A | Same 1500 W rating and VBR, but TO-204AA (DO-41) package, non-automotive grade, no HE3 whisker compliance | Lacks AEC-Q101 qualification and high-temp reliability; unsuitable for under-hood deployment | Acceptable for industrial control panels where ambient temperature stays below 125 °C and whisker risk is mitigated externally. |
Compared with SMBJ11AHE3/52 and 1.5KE11A, the 1.5KA11AHE3/54 delivers higher surge robustness in an AEC-Q101-qualified, high-temperature-stable package - making it the only choice for automotive powertrain and chassis modules requiring sustained operation at 185 °C junction temperature.
Availability
1.5KA11AHE3/54 is available at Aetrix Electronics and suitable for automotive ECU design, industrial motor drive protection, and telecom power supply hardening requiring stable component supply, long-term lifecycle support, and traceable RoHS-compliant sourcing.
Supply support for 1.5KA11AHE3/54 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 diodes, rectifiers, and protection devices with emphasis on reliability, thermal performance, and automotive qualification.
The 1.5KA family was engineered specifically for high-energy transient suppression in harsh automotive environments, targeting AEC-Q101 compliance, 185 °C operation, and stable clamping under repeated surge stress.
FAQ
What is the clamping voltage of the 1.5KA11AHE3/54 at its rated peak pulse current?
The 1.5KA11AHE3/54 has a maximum clamping voltage (VC) of 15.6 V when subjected to its rated peak pulse current of 96.2 A using a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream components see no more than 15.6 V during worst-case surge events - critical for safeguarding 12 V logic interfaces and sensor front-ends in automotive applications.
Is the 1.5KA11AHE3/54 suitable for bidirectional transient protection?
No, the 1.5KA11AHE3/54 is a unidirectional TVS diode, as confirmed by Vishay's documentation stating "Available in uni-directional polarity only." For bidirectional protection, a separate symmetric device such as the 1.5SMC11AHE3/52 would be required - the 1.5KA11AHE3/54 must be used with correct polarity orientation (cathode toward protected line) and cannot suppress positive-going transients on grounded lines without additional circuitry.
Does the 1.5KA11AHE3/54 meet AEC-Q101 requirements?
Yes, the 1.5KA11AHE3/54 is explicitly AEC-Q101 qualified, as noted in the "Mechanical Data" section of Vishay document 88300 and confirmed by the "Base P/NHE3 - RoHS compliant, high reliability/automotive grade (AEC Q101 qualified)" designation. This qualification covers stress tests including temperature cycling, high-temperature reverse bias (HTRB), and mechanical shock - validating its suitability for automotive powertrain and chassis applications.
What is the maximum operating temperature for the 1.5KA11AHE3/54?
The 1.5KA11AHE3/54 has a maximum junction temperature (TJ) of +185 °C and an operating junction/storage temperature range of –65 °C to +185 °C. This extended rating enables direct placement near high-heat sources like ignition modules or DC-DC converters in engine compartments - exceeding standard commercial-grade TVS diodes limited to 150 °C or less.
How does the HE3 suffix affect the 1.5KA11AHE3/54?
The HE3 suffix on 1.5KA11AHE3/54 indicates RoHS compliance, high-reliability automotive qualification, and JESD201 Class 2 whisker resistance. It confirms matte tin-plated leads meeting J-STD-002 solderability and validates the device for long-term use in vibration-prone, high-temperature automotive systems where tin whisker growth could cause latent field failures.
1.5KA11AHE3/54 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):
- 9.4V
- 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
1.5KA11AHE3/54 FAQ
1.How can I place an order for 1.5KA11AHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KA11AHE3/54 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 1.5KA11AHE3/54 reliable?
The price and inventory of 1.5KA11AHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KA11AHE3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KA11AHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KA11AHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KA11AHE3/54?
1.5KA11AHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KA11AHE3/54 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 1.5KA11AHE3/54?
For technical support, including 1.5KA11AHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KA11AHE3/54 requirements.
6.How does Aetrix verify that 1.5KA11AHE3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KA11AHE3/54 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 1.5KA11AHE3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KA11AHE3/54?
All 1.5KA11AHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KA11AHE3/54, 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 1.5KA11AHE3/54 part is unused and in its original packaging.
Return procedure for 1.5KA11AHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KA11AHE3/54 Tags
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