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Vishay General Semiconductor - Diodes Division 1.5KA7.5AHE3/54
- Part No.:
- 1.5KA7.5AHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KA7.5AHE3/54.pdf
- Description:
- TVS DIODE 6.4VWM 11.3VC 1.5KA
- Quantity:
- Payment:
- Shipping:
Inventory:6,423
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Product details
Overview
1.5KA7.5AHE3/54 from Vishay General Semiconductor is a unidirectional automotive-grade transient voltage suppressor (TVS) diode designed for high-energy surge clamping in power and signal lines. It features a 1500 W peak pulse power rating (10/1000 µs), 7.13–7.88 V breakdown voltage at 10 mA, 11.3 V maximum clamping voltage at 5000 A, and AEC-Q101 qualification for under-hood automotive electronics.
For engineers reviewing the 1.5KA7.5AHE3/54 datasheet, 1.5KA7.5AHE3/54 pinout, 1.5KA7.5AHE3/54 application, or 1.5KA7.5AHE3/54 equivalent, key selection criteria include clamping voltage margin vs. protected IC VDD, junction temperature derating above 25 °C, stand-off voltage compatibility with 6.4 V nominal rails, and RoHS-compliant matte tin lead finish per J-STD-002.
Technical Context
This TVS diode employs Vishay's patented PAR® construction for stable high-temperature operation up to +185 °C junction temperature and low incremental surge resistance. Its unidirectional polarity enables DC-biased protection on positive-rail lines without reverse conduction during normal operation.
The device delivers consistent clamping performance across its rated 10/1000 µs waveform, with <1 ns response time and 0.061 %/°C temperature coefficient of VBR, ensuring predictable overvoltage protection in engine control units and ADAS sensor interfaces subject to thermal cycling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 µs) | 1500 W - sustains single high-energy transients like ISO 7637-2 Pulse 5a without failure |
| Breakdown Voltage VBR | 7.13–7.88 V @ 10 mA - ensures reliable triggering above 6.4 V system rail while avoiding false trips |
| Max Clamping Voltage VC | 11.3 V @ 5000 A - limits protected circuit voltage to safe level below typical 12 V automotive IC absolute max ratings |
| Stand-off Voltage VWM | 6.40 V - compatible with 5 V–6.3 V logic supply rails and CAN transceivers |
| Junction Temp Range | −65 °C to +185 °C - supports under-hood placement in modern powertrain and chassis modules |
| AEC-Q101 Qualified | Yes - validated for automotive reliability including temperature cycling, HTRB, and ESD testing |
| RoHS & Whisker Tested | HE3 suffix meets RoHS 2002/95/EC and JESD201 Class 2 whisker resistance |
Pinout & Package
Case Style 1.5KA: axial-leaded DO-201AD package with molded epoxy body (UL 94 V-0), matte tin-plated leads, cathode indicated by color band. Lead length 9.5 mm (0.375"), diameter 1.07 mm (0.042").
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection to ground reference | Completes clamping path during overvoltage events; must be routed with low-inductance ground plane |
| Cathode | High-side connection to protected line | Connected to power rail or signal line being protected; color band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Enables stable VBR and low dynamic impedance across −65 °C to +185 °C operating range |
| 1500 W peak pulse power | Withstands ISO 7637-2 Load Dump and inductive switching surges without degradation |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (<1 ns response), improving system robustness |
| Solder dip 260 °C, 40 s | Compatible with standard lead-free reflow and wave soldering processes without delamination |
| Automotive-grade reliability | Validated per AEC-Q101 for vibration, thermal shock, and humidity exposure in harsh environments |
Applications
| Engine Control Unit (ECU) Power Input | Automotive Camera Module Signal Lines |
|---|---|
Use Scenario: Protects 12 V supply input of diesel/gasoline ECU against load dump transients per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS clamps overvoltage to ≤11.3 V during 1500 W surges, preventing damage to MCU and power management ICs. Use Value: Enables direct integration into compact ECU PCBs without external heat sinking due to 185 °C TJ max and 6.5 W steady-state dissipation. | Use Scenario: Shields FPD-Link III or GMSL serial video interface lines in rear-view or surround-view cameras from ESD and cable discharge events. IC Role / Device Role / Timing Role: Fast-response TVS absorbs ±15 kV contact ESD (IEC 61000-4-2) on differential signal pairs while maintaining signal integrity. Use Value: Low capacitance (typ. <100 pF at VWM) avoids data rate degradation on >3 Gbps video links. |
| Body Control Module (BCM) LIN Bus | Electric Power Steering (EPS) Motor Driver Supply |
Use Scenario: Guards LIN transceiver I/O pins against battery disconnect spikes and relay bounce in door module networks. IC Role / Device Role / Timing Role: Stand-off voltage of 6.40 V aligns with LIN physical layer's 12 V supply and 0–12 V signaling swing. Use Value: AEC-Q101 qualification ensures long-term stability in cyclic temperature environments (−40 °C to +125 °C ambient). | Use Scenario: Suppresses inductive kickback from brushed or BLDC motor windings in EPS systems during PWM switching. IC Role / Device Role / Timing Role: Clamps 200 A forward surge (8.3 ms half-sine) to protect gate drivers and current sense amplifiers. Use Value: 200 A IFSM rating supports repeated motor stall conditions without parametric shift or failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.0A | Lower PPPM (600 W), higher VC (12.0 V @ 30 A), SMB package (surface-mount) | Not AEC-Q101 qualified; suited for non-automotive industrial boards with space constraints | Select only if board-level surge energy is ≤600 W and AEC compliance is not required |
| 1.5KE7.5A | Same VBR range but lower temperature rating (TJ max = 175 °C), no HE3 whisker test, legacy DO-201AD | Lacks automotive qualification and high-reliability plating; used in consumer/commercial power supplies | Acceptable for cost-sensitive non-automotive designs where 10 °C junction margin is acceptable |
Compared with 1.5KA7.5AHE3/54, SMBJ7.0A offers smaller footprint but sacrifices 60% pulse power headroom and automotive qualification, while 1.5KE7.5A matches form factor but omits AEC-Q101 validation and high-temperature reliability-making 1.5KA7.5AHE3/54 the sole choice for production automotive ECUs requiring full specification compliance.
Availability
1.5KA7.5AHE3/54 is available at Aetrix Electronics and suitable for automotive power distribution, ADAS camera interfaces, body electronics, and electric power steering systems requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 1.5KA7.5AHE3/54 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, optoelectronics, and passive components for demanding industrial and automotive applications.
The 1.5KA series was engineered specifically for AEC-Q101-compliant transient suppression in automotive power nets and signal paths, emphasizing thermal stability, surge endurance, and process-controlled lead finishes for high-volume manufacturing.
FAQ
What is the exact breakdown voltage range for 1.5KA7.5AHE3/54?
The 1.5KA7.5AHE3/54 has a guaranteed breakdown voltage (VBR) range of 7.13 V to 7.88 V measured at 10 mA test current, per Vishay Document 88300 Rev. 20-Oct-08. This tolerance ensures reliable turn-on above 6.4 V nominal rails while avoiding premature conduction during normal operation. The 1.5KA7.5AHE3/54 maintains this specification across its full −65 °C to +185 °C junction temperature range.
Is 1.5KA7.5AHE3/54 suitable for protecting CAN bus lines?
No, the 1.5KA7.5AHE3/54 is not recommended for direct CAN bus protection due to its 6.40 V stand-off voltage and unidirectional configuration, which do not match the ±27 V common-mode tolerance and bidirectional surge requirements of ISO 11898-2. The 1.5KA7.5AHE3/54 is optimized for 12 V power rail clamping-not differential data lines-and lacks the low capacitance and symmetrical clamping needed for CAN FD signal integrity.
Does 1.5KA7.5AHE3/54 require a heatsink for continuous operation?
No, the 1.5KA7.5AHE3/54 does not require an external heatsink for its specified 6.5 W power dissipation at TL = 75 °C, as defined in Figure 5 of the datasheet. Its DO-201AD package relies on lead conduction for thermal transfer. However, PCB copper area and trace width must meet Vishay's recommended layout guidelines to maintain junction temperature within −65 °C to +185 °C limits during repetitive surge events.
What does the "HE3/54" suffix mean in 1.5KA7.5AHE3/54?
The "HE3" suffix denotes RoHS-compliant, high-reliability automotive grade with matte tin plating qualified to JESD201 Class 2 for whisker resistance. The "/54" indicates packaging in 13-inch paper tape and reel with 1400 units per reel, per Vishay's ordering information table in Document 88300. This full designation confirms the 1.5KA7.5AHE3/54 meets AEC-Q101 and automotive production traceability requirements.
How does 1.5KA7.5AHE3/54 perform under high-temperature bias conditions?
The 1.5KA7.5AHE3/54 maintains full electrical specifications up to +185 °C junction temperature, with VBR drift controlled by a 0.061 %/°C temperature coefficient. Derating curves (Fig. 2 and Fig. 5) show 50% pulse power reduction at TJ = 125 °C and 25% steady-state power reduction at TL = 125 °C. This behavior is validated per AEC-Q101 thermal test conditions, confirming suitability for under-hood use in the 1.5KA7.5AHE3/54.
1.5KA7.5AHE3/54 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):
- 6.4V
- Voltage - Breakdown (Min):
- 7.13V
- Voltage - Clamping (Max) @ Ipp:
- 11.3V
- Current - Peak Pulse (10/1000µs):
- 133A
- 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
1.5KA7.5AHE3/54 FAQ
1.How can I place an order for 1.5KA7.5AHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KA7.5AHE3/54 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 1.5KA7.5AHE3/54 reliable?
The price and inventory of 1.5KA7.5AHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KA7.5AHE3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KA7.5AHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KA7.5AHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KA7.5AHE3/54?
1.5KA7.5AHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KA7.5AHE3/54 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 1.5KA7.5AHE3/54?
For technical support, including 1.5KA7.5AHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KA7.5AHE3/54 requirements.
6.How does Aetrix verify that 1.5KA7.5AHE3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KA7.5AHE3/54 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 1.5KA7.5AHE3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KA7.5AHE3/54?
All 1.5KA7.5AHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KA7.5AHE3/54, 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 1.5KA7.5AHE3/54 part is unused and in its original packaging.
Return procedure for 1.5KA7.5AHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KA7.5AHE3/54 Tags
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