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Vishay General Semiconductor - Diodes Division 1.5KA15HE3/73
- Part No.:
- 1.5KA15HE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KA15HE3/73.pdf
- Description:
- TVS DIODE 12.1VWM 22VC 1.5KA
- Quantity:
- Payment:
- Shipping:
Inventory:9,246
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Product details
Overview
1.5KA15HE3/73 from Vishay General Semiconductor is a unidirectional automotive-grade transient voltage suppressor (TVS) diode designed for high-energy surge protection in harsh environments. It delivers 1500 W peak pulse power (10/1000 µs), clamps at 22.0 V at 68.2 A, and operates from −65 °C to +185 °C with AEC-Q101 qualification - used to protect MOSFETs and sensor signal lines in automotive powertrain control units.
For engineers reviewing the 1.5KA15HE3/73 datasheet, 1.5KA15HE3/73 pinout, 1.5KA15HE3/73 application, or 1.5KA15HE3/73 equivalent, key selection criteria include breakdown voltage (13.5–16.3 V), clamping performance under 10/1000 µs transients, AEC-Q101 qualification status, thermal derating above 25 °C, and compatibility with J-STD-002 soldering standards.
Technical Context
This TVS diode employs Vishay's patented PAR® construction for stable clamping under repetitive surge stress and high-temperature operation up to 185 °C junction temperature. Its unidirectional polarity and low incremental surge resistance enable fast response (<1 ns) and precise voltage limiting during load-dump or inductive switching events.
The device is rated for 200 A non-repetitive forward surge (8.3 ms half-sine) and exhibits a temperature coefficient of VBR of +0.084 %/°C - critical for predictable clamping behavior across automotive temperature ranges. Its RoHS-compliant matte tin-plated leads meet JESD22-B102 and JESD201 Class 2 whisker test requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 13.5 V / 16.3 V at 1.0 mA - defines reliable conduction onset window for overvoltage detection |
| VC @ IPPM | 22.0 V at 68.2 A - maximum clamped voltage during 10/1000 µs surge, limiting downstream stress |
| PPPM | 1500 W - peak transient energy absorption capability per single 10/1000 µs pulse |
| TJ max | +185 °C - enables operation in under-hood automotive locations without thermal shutdown |
| IFSM | 200 A - withstands high-current inductive turn-off surges common in solenoid and relay drivers |
| VWM | 12.1 V - maximum continuous reverse working voltage before leakage exceeds 1 µA |
| Package | Case Style 1.5KA - axial-leaded, epoxy-molded package with UL 94 V-0 flammability rating |
Pinout & Package
Case Style 1.5KA is an axial-leaded, molded epoxy package with cathode indicated by a color band. Leads are matte tin-plated and compliant with J-STD-002 solderability standards. Dimensions: 1.0" (25.4 mm) minimum length, 0.375" (9.5 mm) lead length, 0.210" (5.3 mm) body diameter.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of protected circuit; enables unidirectional clamping to ground |
| Cathode | Reverse-biased clamping node | Marked with color band; connected to protected line - conducts during overvoltage to shunt energy |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Ensures stable VBR and low dynamic impedance across 1000+ surge cycles at elevated temperature |
| AEC-Q101 qualification | Validated for automotive under-hood use including temperature cycling, HTRB, and surge lifetime testing |
| 1500 W peak pulse power | Handles ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-5 Level 4 surges without degradation |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes voltage overshoot during transients - critical for protecting 12 V logic interfaces and gate drivers |
| JESD201 Class 2 whisker resistance | Prevents tin whisker growth in high-reliability automotive modules operating >10 years |
Applications
| Automotive Powertrain Control | Industrial Motor Drive Protection |
|---|---|
Use Scenario: Protecting microcontroller I/O and gate driver inputs against load-dump transients in engine control units (ECUs). IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between 12 V supply rail and ground, triggered within nanoseconds of overvoltage event. Use Value: Limits voltage to ≤22.0 V during 1500 W surges, preventing latch-up or oxide breakdown in 3.3 V/5 V logic interfaces. | Use Scenario: Safeguarding encoder feedback lines and Hall-effect sensor outputs in variable-frequency drives. IC Role / Device Role / Timing Role: Signal-line TVS mounted at connector interface to absorb ESD and switching noise from nearby IGBTs. Use Value: Maintains <1 µA leakage at 12.1 V working voltage while clamping 68.2 A surges to 22.0 V - preserving signal integrity. |
| Telecom Base Station Power Input | Automotive Body Control Module (BCM) |
Use Scenario: Front-end surge suppression on −48 V DC power feeds in outdoor telecom cabinets exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary unidirectional clamp on input rail, coordinated with upstream MOVs for staged energy handling. Use Value: Withstands 200 A 8.3 ms surges and operates reliably at −65 °C to +185 °C - enabling deployment in unheated enclosures. | Use Scenario: Protecting LIN bus transceivers and LED driver ICs from battery reverse-connection and jump-start transients. IC Role / Device Role / Timing Role: Bidirectionally referenced via external biasing, leveraging unidirectional structure for cost-effective dual-rail protection. Use Value: AEC-Q101 qualification ensures zero field failures over 15-year vehicle life; HE3 suffix guarantees whisker-free solder joints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15A-E3/5A | Lower PPPM (400 W), SMC package, 15 V standoff, AEC-Q200 (not Q101) | Rated for consumer/industrial use only; not qualified for automotive semiconductor-level stress testing | Select when cost sensitivity outweighs under-hood reliability requirements and surge energy is ≤400 W |
| 1.5KE15A | Same VBR range but TO-204AA (DO-4) package, no AEC-Q101, higher VC (23.5 V), 175 °C TJ max | Lacks automotive qualification and PAR® construction; limited to non-safety-critical industrial designs | Choose only for legacy board replacements where 1.5KA15HE3/73 footprint is unavailable and AEC-Q101 is not mandated |
Compared with SMAJ15A-E3/5A and 1.5KE15A, the 1.5KA15HE3/73 provides 270 % higher surge power handling, AEC-Q101 validation for automotive electronics, and patented PAR® architecture for consistent clamping over lifetime - making it the sole choice for ASIL-B–related powertrain and chassis systems.
Availability
1.5KA15HE3/73 is available at Aetrix Electronics and suitable for automotive powertrain control, industrial motor drive protection, and telecom base station power input requiring stable component supply, long-term lifecycle support, and traceable AEC-Q101–qualified parts.
Supply support for 1.5KA15HE3/73 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, rectifiers, and protection devices with emphasis on high-reliability, high-power, and automotive-qualified components.
The 1.5KA series was engineered specifically for automotive transient suppression under AEC-Q101, targeting robustness against load-dump, ISO 7637-2 pulses, and extended temperature operation in engine compartments and power distribution modules.
FAQ
What is the breakdown voltage range for the 1.5KA15HE3/73?
The 1.5KA15HE3/73 has a specified breakdown voltage (VBR) range of 13.5 V to 16.3 V at 1.0 mA test current, measured per ANSI/IEEE C62.35. This window ensures reliable triggering across manufacturing tolerances and temperature drift, with a +0.084 %/°C temperature coefficient confirming predictable upward shift in VBR as junction temperature rises - critical for stable clamping in under-hood applications.
Is the 1.5KA15HE3/73 suitable for automotive applications?
Yes, the 1.5KA15HE3/73 is explicitly AEC-Q101 qualified and designated as high-reliability/automotive grade (HE3 suffix). It undergoes rigorous stress testing including temperature cycling, highly accelerated life testing (HALT), and surge lifetime validation per automotive requirements. Its 185 °C maximum junction temperature and PAR® construction make it suitable for engine control units, body control modules, and ADAS power supplies.
What does the "HE3" suffix mean in 1.5KA15HE3/73?
The "HE3" suffix denotes RoHS-compliant, high-reliability/automotive-grade construction meeting AEC-Q101 requirements. It confirms matte tin-plated leads compliant with J-STD-002 and JESD22-B102, plus JESD201 Class 2 whisker resistance - essential for long-life automotive modules. The "/73" indicates packaging in 7" diameter tape-and-reel with 1400 units per reel.
What is the clamping voltage of the 1.5KA15HE3/73 at its rated peak pulse current?
The 1.5KA15HE3/73 clamps to a maximum of 22.0 V at its rated peak pulse current (IPPM) of 68.2 A under the standard 10/1000 µs waveform. This clamping voltage is guaranteed across the full operating temperature range and forms the basis for system-level overvoltage margin design - ensuring protected ICs see no more than 22.0 V during worst-case transients.
Can the 1.5KA15HE3/73 be used in bidirectional configurations?
No, the 1.5KA15HE3/73 is unidirectional only, as confirmed in the Vishay datasheet Document Number 88300. It features a cathode band and is designed to clamp positive transients to ground. For bidirectional protection, two 1.5KA15HE3/73 devices must be connected in series opposition - though this increases board space and requires careful layout to avoid parasitic inductance effects.
1.5KA15HE3/73 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):
- 12.1V
- Voltage - Breakdown (Min):
- 13.5V
- Voltage - Clamping (Max) @ Ipp:
- 22V
- Current - Peak Pulse (10/1000µs):
- 68.2A
- 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
1.5KA15HE3/73 FAQ
1.How can I place an order for 1.5KA15HE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KA15HE3/73 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 1.5KA15HE3/73 reliable?
The price and inventory of 1.5KA15HE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KA15HE3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KA15HE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KA15HE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KA15HE3/73?
1.5KA15HE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KA15HE3/73 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 1.5KA15HE3/73?
For technical support, including 1.5KA15HE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KA15HE3/73 requirements.
6.How does Aetrix verify that 1.5KA15HE3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KA15HE3/73 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 1.5KA15HE3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KA15HE3/73?
All 1.5KA15HE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KA15HE3/73, 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 1.5KA15HE3/73 part is unused and in its original packaging.
Return procedure for 1.5KA15HE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KA15HE3/73 Tags
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