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Vishay General Semiconductor - Diodes Division 1.5KA30AHE3/73
- Part No.:
- 1.5KA30AHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KA30AHE3/73.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC 1.5KA
- Quantity:
- Payment:
- Shipping:
Inventory:2,540
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Product details
Overview
1.5KA30AHE3/73 from Vishay General Semiconductor is a unidirectional automotive-grade transient voltage suppressor (TVS) diode with 30 V breakdown voltage, 1500 W peak pulse power (10/1000 µs), 41.4 V clamping voltage at 36.2 A, and AEC-Q101 qualification for under-hood electronics protection in 12 V automotive systems.
For engineers reviewing the 1.5KA30AHE3/73 datasheet, 1.5KA30AHE3/73 pinout, 1.5KA30AHE3/73 application, or 1.5KA30AHE3/73 equivalent, key selection criteria include clamping performance at rated surge current, high-temperature junction stability up to +185 °C, RoHS-compliant HE3 packaging, and compliance with IEC 61000-4-5 surge immunity requirements.
Technical Context
This TVS diode employs Vishay's patented PAR® construction for low incremental surge resistance and fast response time (<1 ns), enabling robust suppression of inductive switching transients and load-dump spikes in automotive power networks. Its unidirectional polarity and 1.0 mA test current ensure stable breakdown voltage tolerance (±5%) across temperature.
The device operates within -65 °C to +185 °C junction range and delivers 6.5 W steady-state power dissipation on infinite heatsink at TL = 75 °C. It withstands 200 A non-repetitive forward surge (8.3 ms half-sine) and maintains <1 µA reverse leakage at 25.6 V stand-off voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VBR) | 28.5 V min / 31.5 V max at 1.0 mA - defines precise overvoltage triggering threshold for 12 V system protection |
| Clamping Voltage (VC) | 41.4 V at 36.2 A (10/1000 µs) - limits downstream IC/MOSFET stress during ISO 7637-2 Pulse 5a load dump |
| Peak Pulse Power (PPPM) | 1500 W - sustains high-energy transients without thermal runaway in automotive environments |
| Junction Temperature Range | -65 °C to +185 °C - supports under-hood placement near engines and powertrain controllers |
| AEC-Q101 Qualification | Qualified - meets stress test requirements for automotive electronic components including HTGB, TCT, and HTRB |
| RoHS & Whisker Compliance | HE3 suffix: RoHS-compliant, JESD201 Class 2 whisker-tested matte tin leads - ensures long-term solder joint reliability |
Pinout & Package
Package: Case Style 1.5KA - molded epoxy body (UL 94 V-0), 0.375" lead length, axial-leaded DO-201AD outline with cathode band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias | Connected to ground or low-side return path during transient clamping |
| Cathode | Current exit terminal in forward bias; marked by color band | Connected to protected line (e.g., battery rail or signal input) - conducts surge current to ground |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Reduces incremental surge resistance for tighter clamping and lower let-through energy |
| 1500 W peak pulse power (10/1000 µs) | Meets ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-5 Level 4 surge immunity requirements |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes overvoltage margin between clamping and protected device absolute maximum ratings |
| High-temperature operation (TJ max = +185 °C) | Enables direct mounting on engine control units and DC-DC converters without derating penalties |
| Automotive-grade reliability (AEC-Q101) | Validated for lifetime operation in harsh thermal, vibration, and humidity conditions per automotive OEM standards |
Applications
| Engine Control Unit Protection | Body Control Module Input Protection |
|---|---|
Use Scenario: Suppresses load-dump transients (>35 V, 100 ms) induced by alternator field-circuit interruption in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and microcontroller power input to clamp overvoltage before LDO regulator. Use Value: Limits peak voltage to 41.4 V, preventing damage to 3.3 V/5 V logic supplies and analog sensor interfaces. | Use Scenario: Protects LIN bus transceiver inputs from ESD and inductive switching noise generated by door lock actuators and window lift motors. IC Role / Device Role / Timing Role: TVS connected between LIN data line and ground to shunt fast transients while preserving signal integrity below 20 kHz. Use Value: Clamps 8 kV contact ESD events to <45 V within <1 ns, maintaining LIN physical layer compliance (ISO 17987-4). |
| Powertrain Sensor Interface Protection | Infotainment System Power Rail Protection |
Use Scenario: Shields crankshaft/camshaft position sensor signal lines from ignition coil back-EMF and relay switching noise in high-EMI engine bays. IC Role / Device Role / Timing Role: TVS mounted at connector interface to absorb sub-microsecond transients before reaching Hall-effect sensor IC. Use Value: Maintains signal fidelity with <10 pF junction capacitance at VWM, avoiding distortion of 1–20 kHz digital timing signals. | Use Scenario: Guards 5 V/3.3 V power rails feeding audio amplifiers and display drivers against battery reversal and jump-start surges. IC Role / Device Role / Timing Role: TVS placed upstream of DC-DC converter input to prevent latch-up or burnout during 24 V jump-start events. Use Value: Withstands 200 A surge (8.3 ms) without failure, ensuring uninterrupted operation during roadside assistance scenarios. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30AHE3/52 | Same VBR (28.5–31.5 V), lower PPPM (600 W), SMB package (surface-mount) | Lower surge capacity; suited for PCB space-constrained modules with moderate transient exposure | Select when board area is limited and peak surge energy does not exceed 600 W |
| 1.5KE30A | Same VBR and PPPM, but standard industrial grade (not AEC-Q101 qualified), DO-201AD package | Lacks automotive qualification; unsuitable for safety-critical or under-hood deployment | Select only for non-automotive industrial applications where AEC-Q101 is not mandated |
Compared with SMBJ30AHE3/52 and 1.5KE30A, the 1.5KA30AHE3/73 uniquely combines AEC-Q101 qualification, 1500 W surge rating, and axial-leaded DO-201AD mechanical robustness-making it the preferred choice for high-reliability automotive power line protection where thermal cycling and mechanical shock resistance are critical.
Availability
1.5KA30AHE3/73 is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, powertrain sensor interfaces, and infotainment system power rails requiring stable component supply across extended temperature and high-surge environments.
Supply support for 1.5KA30AHE3/73 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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices for high-reliability industrial and automotive applications.
The 1.5KA series was developed specifically for automotive transient suppression under AEC-Q101, targeting under-hood and chassis-mounted ECUs exposed to load dump, ISO 7637-2 pulses, and ESD events.
FAQ
What is the clamping voltage of the 1.5KA30AHE3/73 at its rated peak pulse current?
The 1.5KA30AHE3/73 has a maximum clamping voltage (VC) of 41.4 V at 36.2 A peak pulse current with a 10/1000 µs waveform. This value is measured per IEC 61000-4-5 test conditions and ensures protected downstream circuitry remains within safe operating limits during standardized surge events. The 1.5KA30AHE3/73 achieves this clamping performance using Vishay's PAR® construction for minimal dynamic impedance.
Is the 1.5KA30AHE3/73 qualified for automotive use?
Yes, the 1.5KA30AHE3/73 is AEC-Q101 qualified and designated as an automotive-grade part (HE3 suffix). It passes high-temperature reverse bias (HTRB), temperature cycling (TCT), and highly accelerated life testing (HALT) per AEC-Q101 Rev D. The 1.5KA30AHE3/73 is intended for under-hood and chassis-mounted applications where junction temperatures reach +185 °C.
What is the stand-off voltage (VWM) of the 1.5KA30AHE3/73, and why does it matter?
The 1.5KA30AHE3/73 has a maximum stand-off voltage (VWM) of 25.6 V, meaning it remains non-conductive below this DC or RMS voltage level. This ensures no leakage current flows during normal 12 V system operation, preserving power efficiency and preventing false triggering. The 1.5KA30AHE3/73 maintains <1 µA leakage at VWM, critical for always-on automotive modules.
Does the 1.5KA30AHE3/73 have RoHS and whisker compliance?
Yes, the 1.5KA30AHE3/73 carries the HE3 suffix, indicating full RoHS 2002/95/EC compliance and JESD201 Class 2 whisker resistance. Its matte tin-plated leads meet J-STD-002 and JESD22-B102 solderability standards, supporting reliable reflow and wave soldering processes in automotive manufacturing. The 1.5KA30AHE3/73 is certified for long-term interconnect integrity in high-vibration environments.
What is the maximum junction temperature rating for the 1.5KA30AHE3/73?
The 1.5KA30AHE3/73 has a maximum junction temperature (TJ) rating of +185 °C, validated per AEC-Q101 thermal stress tests. This enables direct mounting on high-temperature substrates such as engine control unit housings or power inverters without external heatsinking. The 1.5KA30AHE3/73 maintains stable VBR and leakage characteristics across this full range, with a temperature coefficient of 0.097 %/°C.
1.5KA30AHE3/73 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):
- 25.6V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 41.4V
- Current - Peak Pulse (10/1000µs):
- 36.2A
- 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
1.5KA30AHE3/73 FAQ
1.How can I place an order for 1.5KA30AHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KA30AHE3/73 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 1.5KA30AHE3/73 reliable?
The price and inventory of 1.5KA30AHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KA30AHE3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KA30AHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KA30AHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KA30AHE3/73?
1.5KA30AHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KA30AHE3/73 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 1.5KA30AHE3/73?
For technical support, including 1.5KA30AHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KA30AHE3/73 requirements.
6.How does Aetrix verify that 1.5KA30AHE3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KA30AHE3/73 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 1.5KA30AHE3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KA30AHE3/73?
All 1.5KA30AHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KA30AHE3/73, 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 1.5KA30AHE3/73 part is unused and in its original packaging.
Return procedure for 1.5KA30AHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KA30AHE3/73 Tags
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