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Vishay General Semiconductor - Diodes Division 1.5KA10HE3/73
- Part No.:
- 1.5KA10HE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KA10HE3/73.pdf
- Description:
- TVS DIODE 8.1VWM 15VC 1.5KA
- Quantity:
- Payment:
- Shipping:
Inventory:5,895
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Product details
Overview
1.5KA10HE3/73 from Vishay General Semiconductor is a unidirectional automotive-grade transient voltage suppressor (TVS) diode with 1500 W peak pulse power (10/1000 µs), 9.0–11.0 V breakdown voltage, and AEC-Q101 qualification for high-reliability protection of automotive sensor signal lines against inductive switching transients.
For engineers reviewing the 1.5KA10HE3/73 datasheet, 1.5KA10HE3/73 pinout, 1.5KA10HE3/73 application, or 1.5KA10HE3/73 equivalent, key selection criteria include clamping voltage (15.0 V at 100 A), operating junction temperature up to +185 °C, RoHS-compliant HE3 packaging, and unidirectional polarity with cathode band marking.
Technical Context
This TVS diode employs Vishay's patented PAR® construction for stable clamping under high-temperature stress and features low incremental surge resistance to maintain consistent voltage suppression during fast-rising transients (e.g., load dump or relay bounce). Its 10/1000 µs waveform response supports IEC 61000-4-5 Level 4 compliance in automotive subsystems.
Designed for unidirectional operation only, the 1.5KA10HE3/73 delivers 15.0 V maximum clamping voltage at 100 A peak pulse current and exhibits a +0.073 %/°C temperature coefficient of VBR, enabling predictable performance across –65 °C to +185 °C junction range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 µs) | 1500 W - sustains high-energy transients without failure in automotive power line protection |
| Breakdown Voltage VBR | 9.0–11.0 V at 1.0 mA - defines precise voltage threshold for reliable turn-on during overvoltage events |
| Maximum Clamping Voltage VC | 15.0 V at 100 A - limits downstream IC voltage stress during worst-case surge conditions |
| Stand-off Voltage VWM | 8.10 V - ensures no conduction during normal 12 V automotive system operation |
| Operating Junction Temperature | –65 °C to +185 °C - supports under-hood deployment in engine control units and ADAS modules |
| AEC-Q101 Qualification | Qualified - meets automotive reliability standards for vibration, thermal cycling, and humidity testing |
| RoHS & WEEE Compliance | Compliant - meets EU environmental directives for lead-free manufacturing and end-of-life handling |
Pinout & Package
Package: Case Style 1.5KA - molded epoxy body with matte tin-plated leads, UL 94 V-0 rated, 0.375" (9.5 mm) lead length, cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias | Connected to protected circuit ground or low-side return path |
| Cathode | Current exit point in forward bias; marked with band | Connected to protected line (e.g., sensor supply or signal trace) to clamp positive transients |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Enables stable clamping performance and reduced parameter drift after repeated surge exposure |
| 1500 W peak pulse power (10/1000 µs) | Withstands high-energy transients typical of automotive load-dump and inductive kick events |
| Low incremental surge resistance | Minimizes dynamic voltage overshoot during fast-rising transients (<1 ns rise time) |
| Solder dip 260 °C, 40 s | Supports standard lead-free reflow and wave soldering processes without degradation |
| JESD201 Class 2 whisker resistance | Prevents tin whisker growth in long-life automotive applications under thermal cycling stress |
Applications
| Automotive Engine Control Unit (ECU) | ADAS Camera Power Line Protection |
|---|---|
Use Scenario: Protects microcontroller I/O and CAN transceiver power rails from load-dump transients during alternator regulation faults. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between 12 V supply and ground, triggered within nanoseconds to clamp voltage spikes above 15.0 V. Use Value: Prevents latch-up or permanent damage to 5 V/3.3 V logic supplies while maintaining AEC-Q101 reliability over 15-year vehicle lifetime. | Use Scenario: Shields image sensor power input from voltage surges induced by nearby solenoid actuation in parking assist systems. IC Role / Device Role / Timing Role: Standoff-rated TVS (VWM = 8.10 V) placed upstream of LDO regulator to absorb 10/1000 µs pulses before they reach sensitive analog front-end. Use Value: Ensures uninterrupted video stream by limiting clamped voltage to ≤15.0 V, preserving signal integrity and avoiding frame drop during ESD or switching noise events. |
| Industrial Motor Drive Feedback Circuit | Automotive HVAC Blower Control Module |
Use Scenario: Guards isolated encoder signal lines against back-EMF coupling from adjacent 3-phase inverter switching. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS (CJ < 1000 pF at VWM) installed at connector interface to suppress common-mode transients. Use Value: Maintains encoder resolution accuracy by preventing false edge detection caused by >1 kV transients, validated per IEC 61800-3. | Use Scenario: Safeguards MOSFET gate driver supply in PWM-controlled blower motor circuits exposed to relay coil flyback. IC Role / Device Role / Timing Role: Fast-response TVS (nanosecond turn-on) connected between driver VDD and ground to shunt inductive energy before gate oxide breakdown. Use Value: Extends MOSFET lifetime by limiting transient-induced gate-source overvoltage to <15.0 V, meeting ISO 7637-2 Pulse 1/2a/5a immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ10A | Lower peak pulse power (600 W), smaller SMB package, bidirectional option available | Limited to lower-energy transients; not AEC-Q101 qualified | Select when cost-sensitive consumer applications require basic surge protection without automotive qualification |
| 1.5KE10A | Same 1500 W rating but TO-204AE (DO-204AC) package; non-automotive grade; higher leakage at 150 °C | Not qualified for automotive use; lacks JESD201 Class 2 whisker resistance | Choose for industrial power supplies where AEC-Q101 is not mandated and lead-forming flexibility is needed |
Compared with SMBJ10A and 1.5KE10A, the 1.5KA10HE3/73 provides higher temperature stability (+185 °C TJ), guaranteed AEC-Q101 qualification, and optimized clamping for automotive 12 V systems-making it the only choice for under-hood ECU and ADAS deployments requiring zero field failures.
Availability
1.5KA10HE3/73 is available at Aetrix Electronics and suitable for automotive engine control units, ADAS camera modules, industrial motor feedback interfaces, and HVAC blower control systems requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1.5KA10HE3/73 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, rectifiers, and protection devices for demanding industrial and automotive environments.
The 1.5KA series was engineered specifically for automotive transient suppression, combining PAR® technology, AEC-Q101 qualification, and high-temperature operation to protect next-generation ECUs and sensor systems from load-dump and inductive switching events.
FAQ
What is the clamping voltage of the 1.5KA10HE3/73 at its rated peak pulse current?
The 1.5KA10HE3/73 has a maximum clamping voltage (VC) of 15.0 V at 100 A peak pulse current (IPPM) under 10/1000 µs waveform conditions. This value is measured per ANSI/IEEE C62.35 and ensures downstream components remain within safe operating voltage limits during surge events. The 1.5KA10HE3/73 maintains this clamping performance across its full operating temperature range.
Is the 1.5KA10HE3/73 suitable for bidirectional transient protection?
No, the 1.5KA10HE3/73 is unidirectional only, as confirmed in the Vishay datasheet Document Number 88300. It protects against positive-going transients on the cathode side relative to anode ground. For bidirectional protection, a separate device such as the 1.5KA10CA variant would be required. The 1.5KA10HE3/73 polarity is marked by a cathode band and must be oriented accordingly in-circuit.
Does the 1.5KA10HE3/73 meet AEC-Q101 requirements for automotive use?
Yes, the 1.5KA10HE3/73 is explicitly AEC-Q101 qualified per the datasheet notes and ordering information. Its HE3 suffix denotes high-reliability, automotive-grade construction-including JESD201 Class 2 whisker resistance, extended temperature operation (–65 °C to +185 °C), and validation for mechanical shock, thermal cycling, and humidity testing. This makes the 1.5KA10HE3/73 appropriate for safety-critical automotive subsystems.
What is the standoff voltage (VWM) of the 1.5KA10HE3/73, and why does it matter?
The standoff voltage (VWM) of the 1.5KA10HE3/73 is 8.10 V, meaning it remains non-conductive under normal 12 V automotive system operation. This margin prevents leakage current and power loss while ensuring immediate conduction only when transients exceed the breakdown threshold. The 1.5KA10HE3/73 uses this VWM to avoid false triggering during battery voltage fluctuations or cold-cranking dips.
How does the 1.5KA10HE3/73 differ from standard 1.5KE series TVS diodes?
The 1.5KA10HE3/73 differs from the 1.5KE10A in three key ways: it uses Case Style 1.5KA (not TO-204AE), carries AEC-Q101 qualification and HE3 automotive reliability enhancements, and features tighter VBR tolerance (9.0–11.0 V vs. wider 1.5KE spread). The 1.5KA10HE3/73 also specifies lower leakage at 150 °C and meets JESD201 Class 2 whisker requirements-critical distinctions for automotive deployment where the 1.5KE10A is not approved.
1.5KA10HE3/73 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):
- 8.1V
- Voltage - Breakdown (Min):
- 9V
- Voltage - Clamping (Max) @ Ipp:
- 15V
- Current - Peak Pulse (10/1000µs):
- 100A
- 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
1.5KA10HE3/73 FAQ
1.How can I place an order for 1.5KA10HE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KA10HE3/73 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 1.5KA10HE3/73 reliable?
The price and inventory of 1.5KA10HE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KA10HE3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KA10HE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KA10HE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KA10HE3/73?
1.5KA10HE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KA10HE3/73 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 1.5KA10HE3/73?
For technical support, including 1.5KA10HE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KA10HE3/73 requirements.
6.How does Aetrix verify that 1.5KA10HE3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KA10HE3/73 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 1.5KA10HE3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KA10HE3/73?
All 1.5KA10HE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KA10HE3/73, 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 1.5KA10HE3/73 part is unused and in its original packaging.
Return procedure for 1.5KA10HE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KA10HE3/73 Tags
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