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Vishay General Semiconductor - Diodes Division 1.5KE7.5HE3/54
- Part No.:
- 1.5KE7.5HE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE7.5HE3/54.pdf
- Description:
- TVS DIODE 6.05VWM 11.7VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:3,653
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Product details
Overview
1.5KE7.5HE3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection in DC power rails and signal lines. It features a 7.13 V to 7.88 V breakdown voltage (VBR) at 10 mA, 6.40 V maximum standoff voltage (VWM), 11.3 V clamping voltage (VC) at 133 A peak pulse current, 1500 W peak pulse power rating with 10/1000 µs waveform, and operates across -55 °C to +175 °C junction temperature range - deployed in automotive power supply inputs and industrial sensor interface protection.
For engineers reviewing the 1.5KE7.5HE3/54 datasheet, 1.5KE7.5HE3/54 pinout, 1.5KE7.5HE3/54 application, or 1.5KE7.5HE3/54 equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), JEDEC 1.5KE package dimensions, and real-world clamping behavior under transient surge conditions.
Technical Context
This unidirectional TVS diode uses a glass passivated silicon junction to achieve sub-nanosecond response time (<1 ns) and low incremental surge resistance. Its clamping action initiates at 7.13 V (min VBR) and limits voltage to ≤11.3 V at 133 A (10/1000 µs), enabling robust protection of downstream MOSFETs and ICs against ESD, load dump, and inductive switching transients.
The device is rated for 200 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine), exhibits 3.5 V max forward voltage at 100 A, and maintains stable performance up to 175 °C junction temperature - supported by RθJL = 15.4 °C/W and RoHS-compliant matte tin-plated leads meeting J-STD-002 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 7.13 V to 7.88 V at 10 mA - defines precise conduction onset threshold for reliable overvoltage triggering |
| Standoff Voltage VWM | 6.40 V max - ensures no leakage or false triggering below system operating voltage |
| Clamping Voltage VC | 11.3 V at 133 A (10/1000 µs) - guarantees protected circuit sees ≤11.3 V during worst-case surge |
| Peak Pulse Power PPPM | 1500 W - sustains high-energy transients without failure, critical for automotive load-dump immunity |
| Junction Temperature Range | -55 °C to +175 °C - supports operation in under-hood automotive and industrial environments |
| Thermal Resistance RθJA | 75 °C/W - enables thermal design margin estimation on standard PCB copper areas |
| AEC-Q101 Qualified | Yes (HE3 suffix) - validated for automotive electronics per stress test requirements including HTRB, HTGB, and TCT |
Pinout & Package
Package: JEDEC 1.5KE molded epoxy case (Case Style 1.5KE), axial leaded, RoHS-compliant, matte tin-plated leads. Dimensions: 5.3 mm diameter × 9.5 mm length, lead spacing 9.5 mm, lead diameter 1.07 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias | Connected to ground or lower-potential node in unidirectional clamp configuration |
| Cathode | Current exit terminal; marked with color band | Connected to protected line (e.g., 12 V rail); conducts when line exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enables stable VBR tolerance (±5 %) and long-term reliability under thermal cycling |
| 1500 W peak pulse power (10/1000 µs) | Withstands automotive ISO 7637-2 Pulse 5a (load dump) without degradation |
| AEC-Q101 qualified (HE3 variant) | Validated for automotive Grade 0/1 applications including engine control and body electronics |
| Sub-nanosecond response time | Clamps transients before sensitive ICs experience overstress - critical for CAN/LIN bus protection |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising surges (e.g., ESD ±8 kV contact discharge) |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Clamp |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump transients (ISO 7637-2 Pulse 5a, up to 60 V/100 ms). IC Role / Device Role / Timing Role: Unidirectional shunt clamp placed between power rail and chassis ground, conducting only during overvoltage events. Use Value: Limits rail voltage to ≤11.3 V during 133 A surge, preventing damage to MCU power supplies and analog front-ends. |
Use Scenario: Safeguarding 4–20 mA current loop transmitters against induced lightning surges on field wiring. IC Role / Device Role / Timing Role: Bidirectional-capable but used unidirectionally across loop supply terminals to absorb common-mode transients. Use Value: Clamps induced spikes within 1 ns, preserving loop accuracy and avoiding ADC saturation in PLC analog inputs. |
| Consumer Power Adapter Output | Telecom DC Feeder Protection |
Use Scenario: Secondary-side overvoltage suppression in 5 V/9 V USB PD adapters exposed to capacitor discharge events. IC Role / Device Role / Timing Role: Fast-acting crowbar element placed after DC-DC converter output filter. Use Value: Prevents >6.4 V from reaching connected devices during regulator fault, meeting IEC 62368-1 transient immunity requirements. |
Use Scenario: Protecting PoE-powered equipment (e.g., IP cameras) from surges entering via 48 V DC feeder lines. IC Role / Device Role / Timing Role: Primary-stage TVS on DC input, coordinated with upstream GDT or MOV for staged energy handling. Use Value: Absorbs 1500 W surge energy while maintaining <11.3 V clamping, ensuring IEEE 802.3af/at compliance and system uptime. |
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), smaller SMB package (3.5 mm × 4.5 mm), VC = 12.4 V @ 48.6 A | Better suited for space-constrained PCBs; insufficient for full automotive load dump | Select SMBJ7.0A only for consumer-grade 5–12 V rails where surge energy ≤600 W |
| 1.5KE7.5A-E3/54 | Same electrical specs, identical 1.5KE package, but commercial grade (non-AEC-Q101) | Lacks automotive qualification; not approved for under-hood use | Choose 1.5KE7.5A-E3/54 only for cost-sensitive industrial or computing applications without automotive requirements |
Compared with SMBJ7.0A and 1.5KE7.5A-E3/54, the 1.5KE7.5HE3/54 uniquely combines AEC-Q101 qualification, 1500 W surge capacity, and axial-leaded mechanical robustness - making it the only option among the three qualified for automotive power rail protection per ISO 16750-2.
Availability
1.5KE7.5HE3/54 is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and telecom power feeders requiring stable component supply with full traceability and lifecycle continuity.
Supply support for 1.5KE7.5HE3/54 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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on high-reliability, high-power, and automotive-qualified components.
The 1.5KE series was developed specifically for high-energy transient suppression in harsh environments - targeting automotive load dump, industrial motor drive snubbing, and telecom infrastructure surge immunity.
FAQ
What is the breakdown voltage tolerance for 1.5KE7.5HE3/54?
The 1.5KE7.5HE3/54 has a specified breakdown voltage (VBR) range of 7.13 V to 7.88 V at 10 mA test current, representing a ±5 % tolerance around the nominal 7.5 V rating. This tight tolerance ensures predictable clamping onset across production lots and supports precise system-level overvoltage margining in automotive and industrial designs using the 1.5KE7.5HE3/54.
Is 1.5KE7.5HE3/54 suitable for bidirectional transient protection?
No - the 1.5KE7.5HE3/54 is a unidirectional TVS diode, indicated by the absence of "CA" suffix. It conducts only when cathode voltage exceeds anode by ≥VBR. For bidirectional protection, Vishay offers the 1.5KE7.5CAHE3/54 variant. Using the unidirectional 1.5KE7.5HE3/54 in AC or floating signal paths risks reverse-bias breakdown and failure; always verify polarity alignment in-circuit for the 1.5KE7.5HE3/54.
Does 1.5KE7.5HE3/54 meet AEC-Q101 requirements?
Yes - the "HE3" suffix explicitly denotes AEC-Q101 qualification per Vishay's documentation (Document 88301, Note 2). The 1.5KE7.5HE3/54 undergoes stress testing including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling (TCT) to ensure reliability in automotive Grade 0 and Grade 1 applications. This qualification is confirmed for the HE3 revision and applies directly to the 1.5KE7.5HE3/54 part number.
What is the maximum clamping voltage of 1.5KE7.5HE3/54 under surge conditions?
The maximum clamping voltage (VC) of the 1.5KE7.5HE3/54 is 11.3 V, measured at 133 A peak pulse current with a 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and forms the basis for downstream component voltage margining. At lower surge currents (e.g., 50 A), VC drops to ~9.8 V, confirming consistent low dynamic impedance essential for protecting sensitive 5 V or 3.3 V logic circuits using the 1.5KE7.5HE3/54.
How does the thermal resistance of 1.5KE7.5HE3/54 affect PCB layout?
The 1.5KE7.5HE3/54 has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W, meaning each watt of sustained power dissipation raises junction temperature by 75 °C above ambient. Since its steady-state power rating is only 6.5 W, layout must prioritize thermal relief: use ≥1 cm² of 2-oz copper connected to both leads, avoid narrow traces, and ensure airflow or heatsinking if ambient exceeds 75 °C. This thermal behavior directly impacts long-term reliability in sealed enclosures using the 1.5KE7.5HE3/54.
1.5KE7.5HE3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- 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:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE7.5HE3/54 FAQ
1.How can I place an order for 1.5KE7.5HE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE7.5HE3/54 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 1.5KE7.5HE3/54 reliable?
The price and inventory of 1.5KE7.5HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE7.5HE3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE7.5HE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE7.5HE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE7.5HE3/54?
1.5KE7.5HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE7.5HE3/54 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 1.5KE7.5HE3/54?
For technical support, including 1.5KE7.5HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE7.5HE3/54 requirements.
6.How does Aetrix verify that 1.5KE7.5HE3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE7.5HE3/54 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 1.5KE7.5HE3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE7.5HE3/54?
All 1.5KE7.5HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE7.5HE3/54, 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 1.5KE7.5HE3/54 part is unused and in its original packaging.
Return procedure for 1.5KE7.5HE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE7.5HE3/54 Tags
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