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Vishay General Semiconductor - Diodes Division 1.5KE24HE3/73
- Part No.:
- 1.5KE24HE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE24HE3/73.pdf
- Description:
- TVS DIODE 19.4VWM 34.7VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:8,466
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Product details
Overview
1.5KE24HE3/73 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection of DC power rails and signal lines. It features a 24 V breakdown voltage (VBR = 22.8–25.2 V at 1 mA), 1500 W peak pulse power (10/1000 µs), clamping voltage of 33.2 V at 45.2 A, and operates across –55 °C to +175 °C junction temperature range - deployed in automotive power supply inputs, industrial sensor interfaces, and telecom line protection.
For engineers reviewing the 1.5KE24HE3/73 datasheet, 1.5KE24HE3/73 pinout, 1.5KE24HE3/73 application, or 1.5KE24HE3/73 equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJL = 15.4 °C/W), JEDEC 1.5KE package dimensions, and direct alternative part comparisons for robust ESD and surge protection design-in.
Technical Context
The 1.5KE24HE3/73 implements a glass-passivated silicon PN junction optimized for fast transient response (<1 ns) and low incremental surge resistance. Its unidirectional polarity uses a cathode band marking, and it complies with JESD 22-B106 soldering (275 °C max, 10 s) and JESD 201 Class 2 whisker testing.
It delivers 1500 W peak pulse power under standardized 10/1000 µs waveform per REA, with derating above 25 °C ambient per Fig. 2 and thermal impedance curves confirming effective heat transfer via leads (RθJL = 15.4 °C/W). Standoff voltage is 20.5 V, reverse leakage ≤1.0 µA at VWM, and forward voltage is 3.5 V at 100 A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 22.8 V / 25.2 V at IT = 1 mA - defines precise clamping onset threshold for overvoltage detection |
| VWM | 20.5 V - maximum continuous working voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 33.2 V at 45.2 A - actual clamped voltage during 1500 W surge, limiting downstream stress |
| PPPM | 1500 W (10/1000 µs) - peak surge energy handling capacity for lightning/inductive switching events |
| TJ Range | –55 °C to +175 °C - enables use in under-hood automotive and high-temp industrial environments |
| RθJL | 15.4 °C/W - low junction-to-lead thermal resistance supports reliable power dissipation without heatsink |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling and HTRB |
Pinout & Package
Package: JEDEC-standard Case Style 1.5KE - molded epoxy body, matte tin-plated leads, RoHS-compliant, UL 94 V-0 rated. Dimensions: 5.3 mm × 5.3 mm × 9.5 mm (L × W × H), lead spacing 7.2 mm, lead diameter 1.07 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias | Connected to protected circuit ground or low-side return path during surge conduction |
| Cathode (banded end) | Current exit point in forward bias; high-impedance terminal in reverse standby | Connected to line/voltage rail being protected; absorbs transient energy when VIN > VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable VBR tolerance (±5 %) and long-term reliability under thermal cycling |
| 1500 W peak pulse rating | Withstands IEC 61000-4-5 Level 4 surges (4 kV, 2 Ω source) without degradation |
| Sub-nanosecond response time | Clamps transients before sensitive ICs (e.g., MCU I/O, CAN transceivers) experience overstress |
| AEC-Q101 qualification | Validated for automotive powertrain and body electronics per stress test requirements |
| Low Rsurge | Minimizes voltage overshoot during high-di/dt events like relay coil de-energization |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Clamp |
|---|---|
Use Scenario: 12 V battery-fed ECUs exposed to load dump (ISO 7637-2 Pulse 5a, up to 60 V/100 ms). IC Role / Device Role: Primary shunt clamp on main input rail, diverting surge current to chassis ground. Use Value: Limits rail voltage to ≤33.2 V during 1500 W transients, preventing damage to LDOs and microcontrollers. | Use Scenario: 4–20 mA current loop interface in PLC analog input modules subject to field wiring ESD. IC Role / Device Role: Bidirectional protection (when used as 1.5KE24CA variant) or unidirectional rail clamp on signal conditioning stage. Use Value: Clamps fast transients (IEC 61000-4-2 ±8 kV contact) within 1 ns, preserving ADC accuracy and isolator integrity. |
| Telecom DC Power Feeds | Consumer Appliance Motor Drive Supply |
Use Scenario: -48 V DC telecom rectifier outputs feeding base station RF modules. IC Role / Device Role: Unidirectional TVS placed between rectifier output and DC-DC converter input. Use Value: Absorbs induced lightning surges (IEC 61643-21 Class II) while maintaining <1 µA leakage at –41 V operating voltage. | Use Scenario: 24 V DC supply to BLDC motor gate drivers in smart HVAC systems. IC Role / Device Role: Rail clamp suppressing inductive kickback from motor phase switching. Use Value: Limits voltage spikes to 33.2 V, preventing MOSFET avalanche failure and ensuring driver IC survival. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24A | Lower PPPM (600 W), smaller SMB package (3.6 mm × 2.5 mm), same VBR range (22.8–25.2 V) | Better suited for space-constrained PCBs; lower surge margin requires parallel staging for 1500 W needs | Select SMBJ24A only when board area is critical and surge threat level is ≤Level 3 (IEC 61000-4-5) |
| 1.5KE24A-E3/54 | Same electrical specs and 1.5KE package, but commercial-grade (non-AEC-Q101) and packaged in tape-and-reel (54 mm pitch) | Lacks automotive qualification; suitable for industrial/commercial power supplies where AEC-Q101 is not mandated | Choose 1.5KE24A-E3/54 for cost-sensitive non-automotive designs requiring identical form/fit/function |
Compared with 1.5KE24HE3/73, SMBJ24A trades surge robustness for footprint reduction, while 1.5KE24A-E3/54 retains full compatibility but omits AEC-Q101 validation - making 1.5KE24HE3/73 the sole choice for production automotive systems requiring qualified components.
Availability
1.5KE24HE3/73 is available at Aetrix Electronics and suitable for automotive ECU power inputs, industrial sensor signal conditioning, and telecom DC feed protection requiring stable component supply, long-term lifecycle support, and AEC-Q101 compliance.
Supply support for 1.5KE24HE3/73 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The 1.5KE series was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where robustness against lightning, ESD, and inductive switching surges is mandatory.
FAQ
What is the exact breakdown voltage range for 1.5KE24HE3/73?
The 1.5KE24HE3/73 has a guaranteed breakdown voltage (VBR) range of 22.8 V to 25.2 V at test current IT = 1 mA, per Vishay Document 88301. This tight ±5 % tolerance ensures consistent clamping behavior across production lots and supports precise overvoltage threshold design in safety-critical circuits such as automotive power supplies.
Is 1.5KE24HE3/73 AEC-Q101 qualified?
Yes, 1.5KE24HE3/73 is AEC-Q101 qualified - specifically listed in Vishay's qualification scope for 1.5KE6.8AHE3_B through 1.5KE220AHE3_B variants. This certification covers stress tests including HTGB, HTRB, temperature cycling, and unbiased HAST, validating its suitability for automotive powertrain and body electronics applications.
What is the clamping voltage of 1.5KE24HE3/73 at its rated peak pulse current?
At its rated peak pulse current of 45.2 A (corresponding to 1500 W, 10/1000 µs waveform), the 1.5KE24HE3/73 clamps to a maximum voltage of 33.2 V. This value is measured per standard test conditions and defines the upper voltage limit imposed on protected circuitry during worst-case surge events.
Can 1.5KE24HE3/73 be used in bidirectional configurations?
No - 1.5KE24HE3/73 is a unidirectional TVS diode, indicated by the "A" suffix. For bidirectional operation, the "CA" variant (e.g., 1.5KE24CA) must be selected. The unidirectional version conducts only in reverse breakdown and forward conduction, requiring correct polarity placement relative to the protected rail.
What is the thermal resistance from junction to lead (RθJL) for 1.5KE24HE3/73?
The 1.5KE24HE3/73 has a typical junction-to-lead thermal resistance (RθJL) of 15.4 °C/W, enabling efficient heat transfer from the silicon die to the PCB copper through the leads. This allows sustained operation at elevated ambient temperatures without external heatsinking, supporting compact, high-density automotive and industrial layouts.
1.5KE24HE3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 19.4V
- Voltage - Breakdown (Min):
- 21.6V
- Voltage - Clamping (Max) @ Ipp:
- 34.7V
- Current - Peak Pulse (10/1000µs):
- 43.2A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE24HE3/73 FAQ
1.How can I place an order for 1.5KE24HE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE24HE3/73 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 1.5KE24HE3/73 reliable?
The price and inventory of 1.5KE24HE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE24HE3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KE24HE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE24HE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE24HE3/73?
1.5KE24HE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE24HE3/73 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 1.5KE24HE3/73?
For technical support, including 1.5KE24HE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE24HE3/73 requirements.
6.How does Aetrix verify that 1.5KE24HE3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE24HE3/73 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 1.5KE24HE3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE24HE3/73?
All 1.5KE24HE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE24HE3/73, 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 1.5KE24HE3/73 part is unused and in its original packaging.
Return procedure for 1.5KE24HE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE24HE3/73 Tags
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