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Vishay General Semiconductor - Diodes Division 1.5KA7.5HE3/54
- Part No.:
- 1.5KA7.5HE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KA7.5HE3/54.pdf
- Description:
- TVS DIODE 6.05VWM 11.7VC 1.5KA
- Quantity:
- Payment:
- Shipping:
Inventory:5,134
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Product details
Overview
1.5KA7.5HE3/54 from Vishay General Semiconductor is a unidirectional automotive-grade transient voltage suppressor (TVS) diode designed for clamping inductive switching surges and lightning-induced transients on power and signal lines. It delivers 1500 W peak pulse power (10/1000 µs), has a breakdown voltage range of 6.75–8.25 V at 10 mA, clamps to ≤11.7 V at 128 A, and operates from –65 °C to +185 °C - deployed in engine control units, ABS modules, and automotive sensor interfaces.
For engineers reviewing the 1.5KA7.5HE3/54 datasheet, 1.5KA7.5HE3/54 pinout, 1.5KA7.5HE3/54 application, or 1.5KA7.5HE3/54 equivalent, key selection criteria include AEC-Q101 qualification, 128 A peak pulse current rating, 11.7 V maximum clamping voltage at rated IPPM, low 0.061 %/°C VBR temperature coefficient, and RoHS-compliant HE3 packaging with JESD201 Class 2 whisker resistance.
Technical Context
This TVS diode uses Vishay's patented PAR® construction for stable high-temperature operation and low incremental surge resistance. Its unidirectional polarity enables precise forward-biased clamping during negative transients while maintaining tight VBR tolerance (±8.3 %) and low leakage (<500 µA at 6.05 V, TJ = 150 °C).
Designed for automotive environments, it meets AEC-Q101 stress test requirements and supports reliable operation up to 185 °C junction temperature. The device sustains 200 A non-repetitive forward surge current (8.3 ms half-sine) and exhibits fast response time (<1.0 ns), enabling protection of sensitive MOSFETs and ICs against ESD and load dump events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 µs) | 1500 W - sustains single high-energy transients without failure in automotive load-dump scenarios |
| Breakdown Voltage VBR | 6.75–8.25 V at 10 mA - defines precise clamping onset threshold for 7.5 V nominal systems |
| Maximum Clamping Voltage VC | 11.7 V at 128 A - limits protected circuit voltage during worst-case surge, preserving downstream ICs |
| Peak Pulse Current IPPM | 128 A - quantifies surge-handling capacity under standardized 10/1000 µs waveform |
| Operating Temperature Range | –65 °C to +185 °C - enables under-hood deployment in engine compartments and transmission control units |
| Temperature Coefficient of VBR | 0.061 %/°C - ensures stable clamping voltage across wide thermal excursions in automotive duty cycles |
| AEC-Q101 Qualified | Yes - certified for automotive reliability including HTOL, TCT, and HAST per AEC standard |
Pinout & Package
Package: Case Style 1.5KA - molded epoxy body with matte tin-plated leads; UL 94 V-0 rated; lead length 0.375" (9.5 mm); diameter 0.210" (5.3 mm). Cathode denoted by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to ground or low-side return path in unidirectional TVS configuration |
| Cathode | Current exit point; marked with color band | Connected to protected line (e.g., battery rail or signal trace) to clamp positive transients |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Enables stable VBR and low dynamic impedance under repeated surge stress and high-temperature bias |
| 1500 W peak pulse power (10/1000 µs) | Provides robust protection against ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-5 surge events |
| AEC-Q101 qualified (HE3 suffix) | Validates reliability for automotive electronics including powertrain, chassis, and ADAS subsystems |
| JESD201 Class 2 whisker resistance | Prevents tin whisker growth in high-humidity, high-temperature environments typical of engine bays |
| Low clamping ratio (VC/VBR ≈ 1.74) | Minimizes overvoltage exposure to protected devices while maintaining margin above system VWM |
Applications
| Engine Control Unit (ECU) Power Input Protection | ABS Module Signal Line Protection |
|---|---|
Use Scenario: Suppresses load dump transients (up to 60 V, 100 ms) induced by alternator disconnection in 12 V automotive electrical systems. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between battery rail and ECU input filter stage to clamp overvoltage before DC-DC converters. Use Value: Limits voltage to ≤11.7 V during 128 A surge, preventing damage to MCU power supplies and CAN transceivers. |
Use Scenario: Protects analog sensor inputs (wheel speed, pressure) from ESD and inductive kickback in anti-lock braking systems. IC Role / Device Role / Timing Role: Fast-response clamping device on differential signal pairs feeding ABS controller ADC inputs. Use Value: Sub-ns response and <500 µA leakage at 6.05 V ensure signal integrity and low offset error in precision measurement paths. |
| Infotainment System USB Port Protection | Body Control Module (BCM) LIN Bus Protection |
Use Scenario: Guards USB 2.0 data and VBUS lines against hot-plug ESD and cable discharge events in vehicle infotainment head units. IC Role / Device Role / Timing Role: Unidirectional TVS array element shunting VBUS to ground during ±15 kV contact ESD (IEC 61000-4-2). Use Value: 11.7 V clamping prevents latch-up in USB PHY ICs while maintaining compatibility with 5 V tolerant interface logic. |
Use Scenario: Shields LIN transceiver pins from battery transients and ground bounce in centralized body electronics nodes. IC Role / Device Role / Timing Role: Standalone TVS connected between LIN bus line and chassis ground to absorb coupled noise and slow surges. Use Value: 185 °C max junction temperature and AEC-Q101 qualification ensure uninterrupted communication during extended under-dash thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.5AHE3/52 | Lower PPPM (600 W), same VBR range, SMB package (smaller footprint, lower thermal mass) | Better suited for space-constrained consumer or industrial PCBs; not AEC-Q101 qualified | Select when automotive qualification is unnecessary and board area is limited; verify thermal derating for 128 A surge |
| 1.5KE7.5A | Same VBR, higher VC (12.9 V), non-automotive grade, TO-204AA (DO-4) package | Lacks AEC-Q101, JESD201 whisker testing, and high-temp reliability validation | Acceptable for cost-sensitive industrial designs where 185 °C operation and automotive longevity are not required |
Compared with SMBJ7.5AHE3/52 and 1.5KE7.5A, the 1.5KA7.5HE3/54 provides superior surge handling (1500 W vs. 600 W or unspecified), guaranteed AEC-Q101 compliance, and validated performance at 185 °C - making it the only choice for under-hood automotive power rail protection requiring long-term reliability.
Availability
1.5KA7.5HE3/54 is available at Aetrix Electronics and suitable for engine control units, ABS modules, and infotainment system power rails requiring stable component supply across automotive production lifecycles.
Supply support for 1.5KA7.5HE3/54 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 high-reliability diodes, MOSFETs, and passive components for demanding industrial and automotive applications.
The 1.5KA series was engineered specifically for automotive transient suppression, emphasizing AEC-Q101 qualification, high-temperature stability, and robust PAR®-based surge endurance in harsh under-hood environments.
FAQ
What is the clamping voltage of the 1.5KA7.5HE3/54 at its rated peak pulse current?
The 1.5KA7.5HE3/54 has a maximum clamping voltage (VC) of 11.7 V at its rated peak pulse current of 128 A (10/1000 µs waveform). This value is measured per ANSI/IEEE C62.35 and guarantees that protected circuits will not experience voltages exceeding 11.7 V during specified surge conditions - critical for safeguarding 5 V and 3.3 V logic interfaces downstream of the 1.5KA7.5HE3/54.
Is the 1.5KA7.5HE3/54 suitable for bidirectional transient suppression?
No, the 1.5KA7.5HE3/54 is unidirectional only, as confirmed in the Vishay datasheet Document Number 88300. It clamps positive transients on the cathode side relative to anode (ground), but does not suppress negative-going surges on the protected line. For bidirectional protection, a separate device such as the 1.5KA7.5CAHE3/54 would be required - the 1.5KA7.5HE3/54 itself is not rated or characterized for reverse surge handling.
Does the 1.5KA7.5HE3/54 meet AEC-Q101 requirements?
Yes, the 1.5KA7.5HE3/54 is explicitly AEC-Q101 qualified, as stated in the "Notes" section of the Vishay datasheet (Document Number 88300, page 3). The HE3 suffix denotes high-reliability, automotive-grade construction meeting all stress tests defined in AEC-Q101, including high-temperature operating life, temperature cycling, and humidity testing - essential for use in safety-critical automotive subsystems.
What is the maximum junction temperature rating for the 1.5KA7.5HE3/54?
The 1.5KA7.5HE3/54 has a maximum junction temperature (TJ) rating of +185 °C, verified per the "MAXIMUM RATINGS" table in the Vishay datasheet. This elevated rating enables reliable operation in under-hood locations such as engine control units and transmission control modules, where ambient temperatures exceed 125 °C and thermal management is constrained - a key differentiator from commercial-grade TVS diodes.
How does the 1.5KA7.5HE3/54 differ from the 1.5KA7.5A variant?
The 1.5KA7.5HE3/54 and 1.5KA7.5A share identical electrical specifications (VBR, VC, IPPM), but differ in packaging and qualification: the HE3/54 suffix indicates RoHS-compliant, AEC-Q101-qualified construction with JESD201 Class 2 whisker resistance and 13" tape-and-reel packaging (1400 pcs/reel), whereas 1.5KA7.5A lacks the HE3 qualification markers and may be supplied in bulk or alternate packaging formats without automotive reliability validation.
1.5KA7.5HE3/54 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):
- 6.05V
- Voltage - Breakdown (Min):
- 6.75V
- Voltage - Clamping (Max) @ Ipp:
- 11.7V
- Current - Peak Pulse (10/1000µs):
- 128A
- 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
1.5KA7.5HE3/54 FAQ
1.How can I place an order for 1.5KA7.5HE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KA7.5HE3/54 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 1.5KA7.5HE3/54 reliable?
The price and inventory of 1.5KA7.5HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KA7.5HE3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KA7.5HE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KA7.5HE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KA7.5HE3/54?
1.5KA7.5HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KA7.5HE3/54 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 1.5KA7.5HE3/54?
For technical support, including 1.5KA7.5HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KA7.5HE3/54 requirements.
6.How does Aetrix verify that 1.5KA7.5HE3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KA7.5HE3/54 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 1.5KA7.5HE3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KA7.5HE3/54?
All 1.5KA7.5HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KA7.5HE3/54, 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 1.5KA7.5HE3/54 part is unused and in its original packaging.
Return procedure for 1.5KA7.5HE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KA7.5HE3/54 Tags
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