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Vishay General Semiconductor - Diodes Division 1.5KA24AHE3/54
- Part No.:
- 1.5KA24AHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KA24AHE3/54.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC 1.5KA
- Quantity:
- Payment:
- Shipping:
Inventory:2,197
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Product details
Overview
1.5KA24AHE3/54 from Vishay General Semiconductor is an AEC-Q101 qualified unidirectional transient voltage suppressor (TVS) diode in Case Style 1.5KA, delivering 1500 W peak pulse power (10/1000 µs), 45.2 A peak pulse current, and clamping voltage of 33.2 V at rated surge. It operates from −65 °C to +185 °C and is used for automotive power line and sensor signal protection against load dump and inductive switching transients.
For engineers reviewing the 1.5KA24AHE3/54 datasheet, 1.5KA24AHE3/54 pinout, 1.5KA24AHE3/54 application, or 1.5KA24AHE3/54 equivalent, key selection criteria include breakdown voltage range (22.8–25.2 V), clamping performance under 10/1000 µs surge, high-temperature reliability up to 185 °C junction, and RoHS-compliant HE3 packaging with JESD201 Class 2 whisker resistance.
Technical Context
This TVS diode employs Vishay's patented PAR® construction for stable clamping and low incremental surge resistance. Its unidirectional polarity and 1.0 mA test current ensure precise breakdown voltage control (22.8–25.2 V) with ±5% tolerance and 0.094 %/°C temperature coefficient.
Designed for automotive-grade transient suppression, it meets AEC-Q101 stress requirements and supports 200 A non-repetitive forward surge (8.3 ms half-sine). The device exhibits 1.0 µA max reverse leakage at 20.5 V stand-off voltage and 3.5 V max forward voltage at 100 A, enabling robust overvoltage protection in harsh environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500 W (10/1000 µs waveform; sustains automotive load dump surges) |
| Breakdown Voltage VBR | 22.8–25.2 V at 1.0 mA (tight tolerance enables accurate overvoltage threshold setting) |
| Clamping Voltage VC | 33.2 V at 45.2 A IPPM (limits protected circuit voltage during surge events) |
| Stand-off Voltage VWM | 20.5 V (maximum continuous reverse operating voltage before conduction) |
| Junction Temperature Range | −65 °C to +185 °C (supports under-hood automotive deployment without derating) |
| Surge Current IPPM | 45.2 A (10/1000 µs; defines maximum transient energy absorption capability) |
| Reverse Leakage ID | 1.0 µA at VWM, 1.0 µA at TJ = 150 °C (ensures minimal standby power loss) |
Pinout & Package
Case Style 1.5KA: molded epoxy body with matte tin-plated leads; cathode indicated by color band; compliant with UL 94 V-0 flammability rating and J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias | Connected to ground or lower-potential rail in unidirectional TVS configuration |
| Cathode | Current exit point in forward bias; marked with color band | Connected to protected line (e.g., 24 V supply or sensor output) to clamp transients to ground |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Enables consistent clamping performance and low dynamic impedance across temperature and lifetime |
| AEC-Q101 qualification | Validated for automotive under-hood applications including engine control units and body electronics |
| HE3 suffix packaging | RoHS-compliant, high-reliability lead finish meeting JESD201 Class 2 whisker resistance |
| 1500 W peak pulse rating | Withstands ISO 7637-2 Pulse 5a (load dump) and Pulse 1/2b (inductive switch-off) waveforms |
| 185 °C max junction temperature | Eliminates thermal derating in high-ambient environments such as powertrain modules |
Applications
| Automotive Power Line Protection | Engine Control Unit (ECU) Input Protection |
|---|---|
Use Scenario: Protecting 24 V battery-fed circuits from load dump transients (ISO 7637-2 Pulse 5a) and alternator overshoot. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges above 33.2 V. Use Value: Prevents damage to downstream DC-DC converters and microcontrollers during vehicle ignition and alternator regulation faults. |
Use Scenario: Safeguarding analog sensor inputs (e.g., MAP, TPS) and CAN transceiver power pins in engine bay ECUs. IC Role / Device Role / Timing Role: Standoff-rated TVS (20.5 V) shunting fast transients (<1 ns rise time) induced by solenoid actuation. Use Value: Maintains signal integrity and prevents latch-up in 3.3 V/5 V logic interfaces exposed to high dV/dt noise. |
| Industrial Motor Drive I/O Protection | Commercial Vehicle Telematics Module |
Use Scenario: Shielding digital I/O lines on PLC output cards driving inductive loads like contactors and valves. IC Role / Device Role / Timing Role: Fast-response TVS (sub-nanosecond) placed at connector interface to absorb switching-induced spikes. Use Value: Extends field reliability by eliminating false triggering and component failure due to repetitive 1500 W surge exposure. |
Use Scenario: Securing GNSS/GSM antenna power and data lines in telematics control units mounted near vehicle battery. IC Role / Device Role / Timing Role: High-temperature-stable TVS (185 °C TJ max) suppressing ESD and load dump coupled onto coaxial feedlines. Use Value: Ensures uninterrupted GPS lock and cellular handover during extreme ambient conditions and electrical disturbances. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24AHE3/52 | Lower peak pulse power (600 W), SMB package (smaller footprint, lower thermal mass) | Rated for consumer/industrial use only; not AEC-Q101 qualified | Select when space-constrained PCB layout and lower surge energy (e.g., I/O lines) suffice, and automotive qualification is unnecessary. |
| 1.5KE24A | Same 1500 W rating but TO-204AA (DO-201AE) package; no HE3 whisker compliance or AEC-Q101 validation | Limited to non-automotive industrial applications; higher thermal resistance than 1.5KA case | Choose for cost-sensitive legacy designs where automotive reliability and RoHS-compliant plating are not required. |
Compared with SMBJ24AHE3/52 and 1.5KE24A, the 1.5KA24AHE3/54 uniquely combines AEC-Q101 qualification, 185 °C junction rating, and HE3 whisker-resistant leads-making it the only option qualified for under-hood automotive power rail protection where sustained high-temperature surge resilience is mandatory.
Availability
1.5KA24AHE3/54 is available at Aetrix Electronics and suitable for automotive power distribution systems, engine control units, and commercial vehicle telematics modules requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1.5KA24AHE3/54 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 AEC-Q101-compliant transient suppression in 12 V/24 V automotive power networks, emphasizing thermal stability, surge robustness, and process-controlled clamping consistency.
FAQ
What is the breakdown voltage range of the 1.5KA24AHE3/54?
The 1.5KA24AHE3/54 has a guaranteed breakdown voltage range of 22.8 V to 25.2 V at 1.0 mA test current, measured per ANSI/IEEE C62.35. This tight tolerance ensures predictable clamping onset in 24 V automotive systems and allows precise margining against system overvoltage thresholds. The 0.094 %/°C temperature coefficient maintains stability across the full −65 °C to +185 °C operating range.
Is the 1.5KA24AHE3/54 qualified for automotive applications?
Yes, the 1.5KA24AHE3/54 is explicitly AEC-Q101 qualified and designated as high-reliability/automotive grade (Base P/NHE3). It undergoes stress testing for temperature cycling, humidity, mechanical shock, and surge endurance per AEC-Q101 standards, making it suitable for under-hood deployment in engine control units, body control modules, and telematics systems.
What does the HE3/54 suffix mean in 1.5KA24AHE3/54?
The HE3 suffix indicates RoHS-compliant, high-reliability construction with matte tin-plated leads meeting JESD201 Class 2 whisker resistance and J-STD-002 solderability. The "54" denotes the preferred package code: 13-inch paper tape and reel, 1400 units per reel. This packaging ensures compatibility with automated SMT placement and long-term storage stability.
How does the 1.5KA24AHE3/54 compare to standard 1.5KE series TVS diodes?
The 1.5KA24AHE3/54 uses the same 1500 W surge rating as the 1.5KE24A but features Case Style 1.5KA-a thermally enhanced package with lower thermal resistance than TO-204AA (DO-201AE). It also includes AEC-Q101 qualification, HE3 whisker-resistant plating, and tighter parametric control, distinguishing it as a purpose-built automotive solution rather than a general-purpose part.
What is the maximum clamping voltage of the 1.5KA24AHE3/54 during a surge event?
The 1.5KA24AHE3/54 clamps to a maximum of 33.2 V at its rated peak pulse current of 45.2 A (10/1000 µs waveform). This value is guaranteed per datasheet Figure 1 and ensures protected circuits-such as 3.3 V or 5 V logic supplies referenced to 24 V rails-remain below destructive voltage levels during ISO 7637-2 Pulse 5a load dump events.
1.5KA24AHE3/54 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):
- 20.5V
- Voltage - Breakdown (Min):
- 22.8V
- Voltage - Clamping (Max) @ Ipp:
- 33.2V
- Current - Peak Pulse (10/1000µs):
- 45.2A
- 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
1.5KA24AHE3/54 FAQ
1.How can I place an order for 1.5KA24AHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KA24AHE3/54 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 1.5KA24AHE3/54 reliable?
The price and inventory of 1.5KA24AHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KA24AHE3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KA24AHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KA24AHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KA24AHE3/54?
1.5KA24AHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KA24AHE3/54 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 1.5KA24AHE3/54?
For technical support, including 1.5KA24AHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KA24AHE3/54 requirements.
6.How does Aetrix verify that 1.5KA24AHE3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KA24AHE3/54 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 1.5KA24AHE3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KA24AHE3/54?
All 1.5KA24AHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KA24AHE3/54, 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 1.5KA24AHE3/54 part is unused and in its original packaging.
Return procedure for 1.5KA24AHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KA24AHE3/54 Tags
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