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Vishay General Semiconductor - Diodes Division 1.5KA30AHE3/54
- Part No.:
- 1.5KA30AHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KA30AHE3/54.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC 1.5KA
- Quantity:
- Payment:
- Shipping:
Inventory:2,997
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Product details
Overview
1.5KA30AHE3/54 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), 30 V nominal breakdown voltage (28.5–31.5 V), and 185 °C maximum junction temperature. It provides robust clamping for inductive load switching transients in automotive power electronics.
For engineers reviewing the 1.5KA30AHE3/54 datasheet, 1.5KA30AHE3/54 pinout, 1.5KA30AHE3/54 application, or 1.5KA30AHE3/54 equivalent, this page delivers verified electrical parameters, AEC Q101 qualification status, clamping voltage at rated surge current, thermal derating behavior, and RoHS-compliant packaging details for high-reliability design-in.
Technical Context
The 1.5KA30AHE3/54 employs Vishay's patented PAR® construction for stable avalanche performance under high-temperature stress. Its unidirectional polarity and 1.0 mA test current ensure precise breakdown voltage control across the full operating temperature range (−65 °C to +185 °C).
It delivers 41.4 V maximum clamping voltage at 36.2 A peak pulse current (10/1000 µs), with low incremental surge resistance and fast response time (<1 ns). The device meets JESD201 Class 2 whisker resistance and is qualified per AEC Q101 for automotive under-hood applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 µs) | 1500 W - withstands severe automotive load-dump and inductive kick transients without failure |
| Breakdown Voltage VBR | 28.5–31.5 V at 1.0 mA - defines precise avalanche initiation threshold for reliable overvoltage triggering |
| Clamping Voltage VC | 41.4 V at 36.2 A - limits downstream circuit voltage during surge, protecting MOSFETs and ICs |
| Operating Temperature Range | −65 °C to +185 °C - supports under-hood placement in engine control units and body modules |
| Surge Current IPPM | 36.2 A (10/1000 µs) - quantifies maximum transient energy absorption capability |
| AEC Q101 Qualified | Yes - validated for automotive reliability including temperature cycling, HTRB, and ESD testing |
| RoHS & WEEE Compliant | Yes - HE3 suffix denotes lead-free matte tin plating and UL 94 V-0 molded epoxy package |
Pinout & Package
Package: Case Style 1.5KA - axial-leaded, molded epoxy body with cathode band marking; dimensions: 1.0" (25.4 mm) min length × 0.210" (5.3 mm) max diameter; UL 94 V-0 rated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to ground or low-side reference | Provides low forward voltage drop (3.5 V @ 100 A) during surge conduction path |
| Cathode | Current exit point in forward bias; marked by color band; connected to protected line | Defines polarity-sensitive clamping node - reverse-biased during normal operation, avalanches during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Ensures stable, repeatable avalanche characteristics over lifetime and temperature extremes |
| 1500 W peak pulse power rating | Enables protection against ISO 7637-2 Pulse 1, 2a, 3a/b, and SAE J1113-11 transients |
| AEC Q101 qualification | Validates reliability for automotive powertrain, chassis, and ADAS subsystems |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes voltage overshoot during clamping, reducing stress on downstream silicon |
| JESD201 Class 2 whisker resistance | Prevents tin whisker growth in high-humidity, high-temperature environments |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive Input Stage |
|---|---|
Use Scenario: Protects microcontroller I/O and power supply rails from inductive kickback during solenoid and fuel injector switching. IC Role / Device Role: Unidirectional TVS diode placed between protected line and ground, absorbing 1500 W transients. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic and gate drivers under ISO 16750-2 load dump conditions. | Use Scenario: Shields rectifier input and DC bus from switching surges generated by contactors and relay coils. IC Role / Device Role: High-energy clamping device mounted across AC input or DC bus terminals. Use Value: Limits transient voltage to ≤41.4 V, ensuring IGBT gate oxide integrity and preventing false triggering. |
| Automotive Body Control Module (BCM) | Telecom Power Supply Input |
Use Scenario: Safeguards LIN bus transceivers and window lift motor drivers from battery reversal and jump-start spikes. IC Role / Device Role: Unidirectional TVS on 12 V rail and signal lines, leveraging AEC Q101 qualification. Use Value: Maintains functional safety compliance (ISO 26262 ASIL-B) through validated surge immunity up to 185 °C junction temp. | Use Scenario: Guards AC/DC front-end rectifiers and PFC controllers against lightning-induced surges on telecom site power feeds. IC Role / Device Role: Primary-level transient suppressor on AC input before bridge rectifier. Use Value: Absorbs 1500 W pulses without degradation, meeting ITU-T K.20 and Telcordia GR-1089-CORE requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30AHE3/52 | 600 W rating, SMB package, lower IPPM (24.3 A), same VBR range | Lower power handling; suited for PCB space-constrained consumer or industrial designs | Select when system-level surge energy is ≤600 W and board area is limited |
| 1.5KE30A | Same 1500 W rating but TO-218 package, non-AEC Q101, higher VC (49.9 V) | Lacks automotive qualification; used in industrial power supplies where AEC compliance not required | Choose for cost-sensitive non-automotive applications needing identical power rating but no automotive validation |
Compared with SMBJ30AHE3/52 and 1.5KE30A, the 1.5KA30AHE3/54 uniquely combines AEC Q101 qualification, 1.5KA axial package robustness, and lowest clamping voltage (41.4 V) in its 1500 W class-making it optimal for under-hood automotive systems requiring long-term reliability under thermal stress.
Availability
1.5KA30AHE3/54 is available at Aetrix Electronics and suitable for automotive ECUs, industrial motor drives, telecom power supplies, and body control modules requiring stable component supply with guaranteed AEC Q101 compliance and traceable sourcing.
Supply support for 1.5KA30AHE3/54 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, TVS devices, and optoelectronics with emphasis on high-reliability, high-power, and automotive-grade solutions.
The 1.5KA series was engineered specifically for automotive transient suppression-delivering AEC Q101-qualified, high-temperature-stable clamping performance in axial-leaded packages for under-hood and chassis-mounted applications.
FAQ
What is the maximum clamping voltage of the 1.5KA30AHE3/54 at its rated peak pulse current?
The 1.5KA30AHE3/54 has a maximum clamping voltage (VC) of 41.4 V at its rated peak pulse current (IPPM) of 36.2 A, measured using the standard 10/1000 µs waveform. This value ensures downstream components like microcontrollers and gate drivers remain within safe voltage limits during surge events. The 1.5KA30AHE3/54 achieves this with low incremental surge resistance and stable avalanche behavior enabled by Vishay's PAR® construction.
Is the 1.5KA30AHE3/54 qualified for automotive use?
Yes, the 1.5KA30AHE3/54 is explicitly qualified per AEC Q101 for automotive applications. Its HE3 suffix confirms RoHS compliance, high-reliability construction, and successful completion of stress tests including temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge (ESD). The 1.5KA30AHE3/54 is designed for under-hood placement in engine control units and body modules where junction temperatures reach up to 185 °C.
What does the "HE3/54" suffix mean in 1.5KA30AHE3/54?
The "HE3" suffix indicates RoHS-compliant, high-reliability construction with matte tin-plated leads meeting J-STD-002 and JESD22-B102 solderability standards, plus JESD201 Class 2 whisker resistance. The "/54" denotes the preferred package code: 13-inch paper tape and reel, 1400 units per reel. This packaging format ensures automated assembly compatibility and traceable sourcing for the 1.5KA30AHE3/54.
How does the 1.5KA30AHE3/54 differ from the standard 1.5KA30A?
The 1.5KA30AHE3/54 adds the HE3 reliability enhancements-including AEC Q101 qualification, JESD201 Class 2 whisker resistance, and RoHS-compliant matte tin plating-over the base 1.5KA30A. Both share identical electrical specs (VBR, VC, PPPM), but only the 1.5KA30AHE3/54 is approved for automotive production. The 1.5KA30AHE3/54 also ships in standardized 1400-unit reels (code /54), whereas 1.5KA30A may use alternate packaging.
What is the thermal derating behavior of the 1.5KA30AHE3/54 above 25 °C ambient?
The 1.5KA30AHE3/54 follows linear derating above 25 °C ambient: peak pulse power decreases per Figure 2 in the datasheet, reaching ~50 % at 125 °C junction temperature. Its 185 °C maximum junction rating allows operation in high-temperature zones when properly heatsinked or mounted with adequate lead length (0.375"). The 1.5KA30AHE3/54 maintains clamping performance stability across this full range due to PAR® construction and low temperature coefficient of VBR (0.097 %/°C).
1.5KA30AHE3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- 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
1.5KA30AHE3/54 FAQ
1.How can I place an order for 1.5KA30AHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KA30AHE3/54 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 1.5KA30AHE3/54 reliable?
The price and inventory of 1.5KA30AHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KA30AHE3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KA30AHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KA30AHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KA30AHE3/54?
1.5KA30AHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KA30AHE3/54 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 1.5KA30AHE3/54?
For technical support, including 1.5KA30AHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KA30AHE3/54 requirements.
6.How does Aetrix verify that 1.5KA30AHE3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KA30AHE3/54 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 1.5KA30AHE3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KA30AHE3/54?
All 1.5KA30AHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KA30AHE3/54, 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 1.5KA30AHE3/54 part is unused and in its original packaging.
Return procedure for 1.5KA30AHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KA30AHE3/54 Tags
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