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Vishay General Semiconductor - Diodes Division 1.5KA11HE3/54
- Part No.:
- 1.5KA11HE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KA11HE3/54.pdf
- Description:
- TVS DIODE 8.92VWM 16.2VC 1.5KA
- Quantity:
- Payment:
- Shipping:
Inventory:8,822
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Product details
Overview
1.5KA11HE3/54 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), 9.9–12.1 V breakdown voltage, and 92.6 A peak pulse current. It features AEC-Q101 qualification, 185 °C max junction temperature, and RoHS-compliant HE3 packaging for high-reliability protection of MOSFETs and sensor signal lines in automotive power systems.
For engineers reviewing the 1.5KA11HE3/54 datasheet, 1.5KA11HE3/54 pinout, 1.5KA11HE3/54 application, or 1.5KA11HE3/54 equivalent, key selection criteria include clamping voltage (16.2 V at IPPM), stand-off voltage (8.92 V), reverse leakage (5 µA at VWM), thermal stability up to 185 °C, and compliance with automotive surge immunity standards.
Technical Context
This TVS diode employs patented PAR® construction for low incremental surge resistance and fast response time (<1 ns), enabling effective suppression of inductive switching transients and ESD events. Its unidirectional polarity and 10/1000 µs waveform rating align with IEC 61000-4-5 and ISO 7637-2 surge test requirements.
The device operates across -65 °C to +185 °C, with temperature coefficient of breakdown voltage at 0.075 %/°C and maximum clamping voltage of 16.2 V at 92.6 A - critical for protecting downstream ICs without overvoltage stress during repetitive or single-pulse surges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 µs) | 1500 W - sustains high-energy transients without failure in automotive load-dump or inductive kick scenarios |
| Breakdown Voltage (VBR) | 9.9–12.1 V - ensures reliable triggering above normal operating voltage while avoiding false conduction |
| Clamping Voltage (VC) | 16.2 V at 92.6 A - limits voltage seen by protected circuitry to safe levels during surge events |
| Stand-off Voltage (VWM) | 8.92 V - defines maximum continuous reverse working voltage before significant leakage begins |
| Reverse Leakage (ID) | 5 µA at VWM - minimal standby power loss and negligible impact on high-impedance sensor bias networks |
| Junction Temperature Range | -65 °C to +185 °C - supports under-hood operation and AEC-Q101 automotive qualification |
| Surge Current (IFSM) | 200 A (8.3 ms half-sine) - withstands high-current inrush or fault conditions without bond-wire fusing |
Pinout & Package
Package: Case Style 1.5KA - 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). Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward conduction mode | Connected to ground or low-side return path; enables unidirectional clamping to GND |
| Cathode | Current exit point in forward conduction; voltage reference for reverse-biased clamping | Connected to protected line (e.g., CAN_H, LIN, sensor supply); absorbs positive transients to GND |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Reduces incremental surge resistance for tighter clamping and lower let-through energy during fast transients |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive under-hood use including temperature cycling, humidity, and mechanical shock per JESD22 |
| 1500 W peak pulse power (10/1000 µs) | Meets ISO 7637-2 Pulse 5a/b (load dump) and IEC 61000-4-5 Level 4 surge immunity requirements |
| Solder dip 260 °C, 40 s | Ensures robustness through standard lead-free reflow and wave soldering processes without delamination |
| Low clamping ratio (VC/VBR ≈ 1.63) | Minimizes overvoltage stress on protected devices compared to competing TVS diodes with higher ratios |
Applications
| Automotive Power Distribution | Engine Control Unit (ECU) Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed power rails against load dump transients (ISO 7637-2 Pulse 5) and alternator overshoot. IC Role / Device Role / Timing Role: Unidirectional TVS clamp referenced to chassis ground, absorbing >1500 W surge energy within nanoseconds. Use Value: Prevents damage to PMICs and DC-DC controllers by limiting rail voltage to ≤16.2 V during 100 V/350 ms load dump events. | Use Scenario: Safeguarding microcontroller I/O and analog sensor inputs (e.g., MAP, TPS) from inductive switching noise. IC Role / Device Role / Timing Role: Fast-response voltage clamp on signal lines tied to 5 V or 3.3 V supplies, with <1 ns response time. Use Value: Maintains signal integrity and prevents latch-up in automotive MCUs by suppressing sub-100 ns spikes below 16.2 V clamping threshold. |
| Body Electronics Module | Telematics Antenna Interface |
Use Scenario: Shielding LIN bus transceivers and door module actuators from ESD and relay coil flyback. IC Role / Device Role / Timing Role: Standoff-rated TVS (8.92 V) placed directly at connector interface to shunt transients before entering PCB traces. Use Value: Enables compliance with ISO 10605 ±25 kV contact/±30 kV air discharge ESD testing without additional filtering. | Use Scenario: Protecting RF front-end components (LNA, switch) connected to external GPS/GNSS antennas exposed to vehicle-induced surges. IC Role / Device Role / Timing Role: Low-capacitance unidirectional clamp (CJ not specified but typical for 1.5KA is <200 pF) minimizing RF insertion loss. Use Value: Preserves antenna VSWR and receiver sensitivity while blocking >100 V transients induced by nearby ignition or motor noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ11A-E3/5A | Lower peak pulse power (400 W), SMA package (smaller footprint), 11.1–12.3 V VBR range, 18.2 V VC at 21.7 A | Not AEC-Q101 qualified; suited for consumer/industrial boards where space is constrained but automotive reliability not required | Select when board area is limited and surge energy remains below 400 W; verify thermal derating for ambient >85 °C |
| 1.5KE11A | Same VBR/VC specs but TO-204AA (DO-41) package, non-automotive grade, no HE3 whisker testing or AEC-Q101 validation | Lacks automotive qualification and high-temp reliability; used in cost-sensitive industrial power supplies | Choose only for non-automotive designs requiring identical electrical performance but lower cost and no under-hood deployment |
Compared with 1.5KA11HE3/54, SMAJ11A-E3/5A offers smaller size but significantly reduced surge handling capacity and no automotive qualification, while 1.5KE11A matches electrical specs but lacks AEC-Q101 validation, HE3 whisker resistance, and high-temperature operational margin - making 1.5KA11HE3/54 the sole choice for production automotive modules requiring long-term reliability at 185 °C.
Availability
1.5KA11HE3/54 is available at Aetrix Electronics and suitable for automotive power distribution, engine control unit (ECU) protection, and body electronics modules requiring stable component supply, AEC-Q101 compliance, and sustained 185 °C junction operation.
Supply support for 1.5KA11HE3/54 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, TVS devices, and optoelectronics with emphasis on high-reliability, high-power, and automotive-qualified solutions.
The 1.5KA series was designed specifically for automotive transient suppression - delivering AEC-Q101-qualified, high-temperature-stable TVS protection with industry-leading 1500 W pulse capability in a ruggedized axial-leaded package.
FAQ
What is the clamping voltage of the 1.5KA11HE3/54 at its rated peak pulse current?
The 1.5KA11HE3/54 has a maximum clamping voltage (VC) of 16.2 V when subjected to its rated peak pulse current of 92.6 A using a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that protected circuitry will not experience voltages exceeding 16.2 V during standardized surge events, ensuring compatibility with 12 V automotive electronics.
Is the 1.5KA11HE3/54 suitable for bidirectional transient suppression?
No, the 1.5KA11HE3/54 is a unidirectional TVS diode only, as confirmed by Vishay's documentation stating "Available in uni-directional polarity only." It protects against positive transients relative to ground and must be paired with a second device or alternate topology for full bidirectional protection - unlike bidirectional variants such as the 1.5KA11CA.
Does the 1.5KA11HE3/54 meet AEC-Q101 requirements?
Yes, the 1.5KA11HE3/54 meets AEC-Q101 qualification requirements, as explicitly stated in the datasheet's Mechanical Data section: "Base P/NHE3 - RoHS compliant, high reliability/automotive grade (AEC Q101 qualified)." The HE3 suffix denotes compliance with JESD201 Class 2 whisker testing and full automotive stress testing protocols.
What is the maximum operating temperature for the 1.5KA11HE3/54?
The 1.5KA11HE3/54 has a maximum operating junction temperature (TJ max.) of +185 °C, verified per the Absolute Maximum Ratings table. This enables reliable operation in under-hood environments, including proximity to engines and exhaust systems, and supports extended lifetime under thermal cycling per AEC-Q101.
How does the 1.5KA11HE3/54 differ from the 1.5KA11A variant?
The 1.5KA11HE3/54 and 1.5KA11A share identical electrical specifications (VBR 10.5–11.6 V, VC = 15.6 V, IPPM = 96.2 A), but the HE3/54 suffix indicates RoHS-compliant, AEC-Q101-qualified construction with JESD201 Class 2 whisker resistance and tape-and-reel packaging (1400 pcs/reel, 13" diameter), whereas 1.5KA11A lacks automotive qualification and specific packaging details.
1.5KA11HE3/54 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):
- 8.92V
- Voltage - Breakdown (Min):
- 9.9V
- Voltage - Clamping (Max) @ Ipp:
- 16.2V
- Current - Peak Pulse (10/1000µs):
- 92.6A
- 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
1.5KA11HE3/54 FAQ
1.How can I place an order for 1.5KA11HE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KA11HE3/54 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 1.5KA11HE3/54 reliable?
The price and inventory of 1.5KA11HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KA11HE3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KA11HE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KA11HE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KA11HE3/54?
1.5KA11HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KA11HE3/54 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 1.5KA11HE3/54?
For technical support, including 1.5KA11HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KA11HE3/54 requirements.
6.How does Aetrix verify that 1.5KA11HE3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KA11HE3/54 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 1.5KA11HE3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KA11HE3/54?
All 1.5KA11HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KA11HE3/54, 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 1.5KA11HE3/54 part is unused and in its original packaging.
Return procedure for 1.5KA11HE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KA11HE3/54 Tags
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