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Vishay General Semiconductor - Diodes Division 1.5KA15AHE3/73
- Part No.:
- 1.5KA15AHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KA15AHE3/73.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC 1.5KA
- Quantity:
- Payment:
- Shipping:
Inventory:8,181
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Product details
Overview
1.5KA15AHE3/73 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), 14.3–15.8 V breakdown voltage at 1 mA, and 70.8 A peak pulse current. It operates from –65 °C to +185 °C and is AEC-Q101 qualified for under-hood automotive electronics protection.
For engineers reviewing the 1.5KA15AHE3/73 datasheet, 1.5KA15AHE3/73 pinout, 1.5KA15AHE3/73 application, or 1.5KA15AHE3/73 equivalent, key selection criteria include clamping voltage (21.2 V at 70.8 A), low incremental surge resistance, RoHS-compliant HE3 packaging with JESD201 Class 2 whisker resistance, and high-temperature stability up to 185 °C junction.
Technical Context
This TVS diode uses patented PAR® construction for stable clamping under repetitive surge stress and features a molded epoxy body with UL 94 V-0 rating. Its unidirectional polarity and cathode band marking align with standard PCB layout conventions for reverse-polarity protection circuits.
The device delivers 21.2 V clamping at 70.8 A (10/1000 µs), with 12.8 V stand-off voltage and only 1.0 µA leakage at TJ = 150 °C - enabling reliable protection of 12 V automotive signal lines without false triggering during hot-cranking conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500 W (10/1000 µs waveform; sustains single transients from load dump or inductive switching) |
| Breakdown Voltage VBR | 14.3–15.8 V at 1 mA (tight tolerance ensures predictable turn-on before IC damage threshold) |
| Clamping Voltage VC | 21.2 V at 70.8 A IPPM (limits downstream voltage to safe level for 12 V logic and sensor interfaces) |
| Stand-off Voltage VWM | 12.8 V (allows full margin above 12 V nominal rail while blocking normal operating voltage) |
| Junction Temp Range | –65 °C to +185 °C (supports placement near engines, motors, or power converters) |
| AEC-Q101 Qualified | Yes (certified for automotive grade reliability per stress test requirements) |
| RoHS & Whisker Rating | RoHS compliant; HE3 suffix meets JESD201 Class 2 tin whisker resistance |
Pinout & Package
Package: Case Style 1.5KA - axial-leaded, molded epoxy body (UL 94 V-0), 0.375" (9.5 mm) lead length, 0.210" (5.3 mm) body diameter. Matte tin-plated leads, solderable per J-STD-002 and JESD22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias | Connected to ground or lower-potential node in unidirectional TVS configuration |
| Cathode | Current exit terminal in forward bias; marked by color band | Connected to protected line (e.g., CAN_H, LIN, sensor supply); clamps to VC during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Enables consistent clamping performance across temperature and after repeated surges, critical for automotive longevity |
| 1500 W peak pulse rating | Handles ISO 7637-2 Pulse 1, 2a, 3a/b, and SAE J1113-11 transients without degradation |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes overvoltage exposure to downstream components compared to higher-ratio TVS devices |
| AEC-Q101 qualification | Validated for automotive use including HTOL, TCT, HAST, and ESD testing per AEC standard |
| 185 °C max junction temperature | Supports mounting on high-power boards or near heat sources without derating concerns |
Applications
| Automotive CAN Bus Protection | Engine Control Unit (ECU) Power Input |
|---|---|
Use Scenario: Protecting CAN_H/CAN_L lines against load dump and alternator ripple in 12 V vehicle networks. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between signal line and ground to shunt transients before they reach CAN transceiver inputs. Use Value: Clamps to 21.2 V at 70.8 A, staying well below CAN transceiver absolute maximum ratings while maintaining signal integrity during ISO 11898-2 compliance testing. |
Use Scenario: Safeguarding 12 V input rails of engine control modules exposed to battery disconnect/load dump events. IC Role / Device Role / Timing Role: Primary overvoltage suppression device mounted at board edge, upstream of DC/DC converters and LDOs. Use Value: Withstands 1500 W surges and operates up to 185 °C, enabling direct placement on ECU power entry without thermal derating. |
| Automotive Sensor Signal Lines | Industrial Motor Drive Feedback Circuits |
Use Scenario: Protecting analog outputs (e.g., throttle position, coolant temp) from inductive kickback in chassis harnesses. IC Role / Device Role / Timing Role: Low-leakage (1.0 µA @ 12.8 V, TJ = 150 °C) TVS placed at connector interface to prevent false readings during transients. Use Value: Stand-off voltage of 12.8 V avoids loading 12 V sensor supplies, while fast response time prevents latch-up in precision ADC front-ends. |
Use Scenario: Shielding encoder or resolver feedback signals in 24 V industrial motor drives subject to commutation noise. IC Role / Device Role / Timing Role: Unidirectional transient suppressor on differential feedback pairs, referenced to local ground plane. Use Value: PAR® construction ensures stable clamping across wide temperature swings encountered in factory-floor environments, supporting IEC 61800-3 compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15AHE3/52 | Same VBR range (14.3–15.8 V) but lower PPPM (600 W); DO-214AA package; 1.5x smaller footprint | Limited to lower-energy transients (e.g., IEC 61000-4-2 contact discharge); unsuitable for ISO 7637-2 Pulse 5a load dump | Select when space-constrained and surge energy is ≤600 W; verify clamping voltage (24.4 V) remains within system margin. |
| 1.5KE15A | Same 1500 W rating and VBR, but legacy 1.5KE case (larger body, no AEC-Q101 qualification, no HE3 whisker rating) | Not approved for automotive production; suitable only for industrial prototypes or non-safety-critical systems | Choose only for cost-sensitive industrial designs where AEC-Q101 and RoHS/whisker compliance are not required. |
Compared with SMBJ15AHE3/52 and 1.5KE15A, the 1.5KA15AHE3/73 uniquely combines AEC-Q101 qualification, 1500 W capability, and JESD201 Class 2 whisker resistance in a robust axial package - making it the only option qualified for production automotive power-line protection where long-term reliability under thermal cycling is mandatory.
Availability
1.5KA15AHE3/73 is available at Aetrix Electronics and suitable for automotive electronics, industrial motor controls, and transportation infrastructure requiring stable component supply with guaranteed AEC-Q101 compliance and high-temperature operation.
Supply support for 1.5KA15AHE3/73 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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for demanding industrial and automotive applications.
The 1.5KA family was designed specifically for automotive-grade transient suppression in harsh under-hood environments, emphasizing AEC-Q101 qualification, extended temperature operation, and robust mechanical construction for vibration and thermal shock resilience.
FAQ
What is the clamping voltage of the 1.5KA15AHE3/73 at its rated peak pulse current?
The 1.5KA15AHE3/73 has a maximum clamping voltage (VC) of 21.2 V when subjected to its rated peak pulse current (IPPM) of 70.8 A under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream components remain within safe operating limits during automotive-level transients such as ISO 7637-2 Pulse 5a.
Is the 1.5KA15AHE3/73 suitable for bidirectional transient protection?
No, the 1.5KA15AHE3/73 is a unidirectional TVS diode, as explicitly stated in the Vishay datasheet Document Number 88300. It provides protection only against positive-going transients on the cathode side relative to anode (ground). For bidirectional protection, a separate device such as the 1.5SMC15AHE3 or dual-diode array would be required.
Does the 1.5KA15AHE3/73 meet automotive qualification standards?
Yes, the 1.5KA15AHE3/73 is AEC-Q101 qualified, as confirmed in the "Notes" section of the Vishay datasheet (Document Number 88300, page 3). This certification covers stress tests including high-temperature operating life, temperature cycling, and electrostatic discharge - validating its suitability for automotive production applications.
What does the HE3 suffix indicate on the 1.5KA15AHE3/73?
On the 1.5KA15AHE3/73, the HE3 suffix denotes RoHS-compliant construction with matte tin-plated leads that meet JESD201 Class 2 whisker resistance requirements. It also signifies high-reliability, automotive-grade qualification per AEC-Q101 - distinguishing it from commercial-grade variants without the HE3 designation.
Can the 1.5KA15AHE3/73 be used in 24 V systems?
The 1.5KA15AHE3/73 is optimized for 12 V nominal systems, with a 12.8 V stand-off voltage (VWM) and 14.3–15.8 V breakdown range. In 24 V systems, it would conduct continuously and fail; instead, higher-voltage variants like 1.5KA24AHE3/73 (VWM = 20.5 V) should be selected to maintain proper margin above the rail voltage.
1.5KA15AHE3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- PAR®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 12.8V
- Voltage - Breakdown (Min):
- 14.3V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- Current - Peak Pulse (10/1000µs):
- 70.8A
- 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
1.5KA15AHE3/73 FAQ
1.How can I place an order for 1.5KA15AHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KA15AHE3/73 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 1.5KA15AHE3/73 reliable?
The price and inventory of 1.5KA15AHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KA15AHE3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KA15AHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KA15AHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KA15AHE3/73?
1.5KA15AHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KA15AHE3/73 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 1.5KA15AHE3/73?
For technical support, including 1.5KA15AHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KA15AHE3/73 requirements.
6.How does Aetrix verify that 1.5KA15AHE3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KA15AHE3/73 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 1.5KA15AHE3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KA15AHE3/73?
All 1.5KA15AHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KA15AHE3/73, 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 1.5KA15AHE3/73 part is unused and in its original packaging.
Return procedure for 1.5KA15AHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KA15AHE3/73 Tags
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