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Vishay General Semiconductor - Diodes Division 1.5KE11HE3/54
- Part No.:
- 1.5KE11HE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE11HE3/54.pdf
- Description:
- TVS DIODE 8.92VWM 16.2VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:8,475
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Product details
Overview
1.5KE11HE3/54 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 10.5 V minimum breakdown voltage (VBR), 9.4 V maximum stand-off voltage (VWM), 15.6 V clamping voltage (VC) at 96.2 A peak pulse current, 1500 W peak pulse power rating (10/1000 µs), 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 1.5KE11HE3/54 datasheet, 1.5KE11HE3/54 pinout, 1.5KE11HE3/54 application, or 1.5KE11HE3/54 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 use cases in lightning-surge-prone telecom interfaces and MOSFET gate protection circuits.
Technical Context
This TVS diode uses a glass-passivated silicon junction optimized for fast transient response (<1 ns) and low incremental surge resistance. Its unidirectional polarity enables cathode-referenced clamping on positive-going transients while blocking reverse leakage below 5 µA at 9.4 V.
The device complies with JEDEC standard 1.5KE case style, supports 200 A non-repetitive forward surge current (8.3 ms half-sine), and exhibits a 0.075 %/°C temperature coefficient of VBR, ensuring stable clamping across wide ambient ranges in engine control units and motor drive PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 10.5 V / 11.6 V at 1.0 mA test current - defines reliable conduction onset under surge conditions without premature triggering |
| VWM | 9.4 V maximum - ensures no conduction during normal 9 V rail operation, minimizing standby leakage |
| VC @ IPPM | 15.6 V at 96.2 A - limits downstream IC voltage stress to safe levels during 1500 W transient events |
| PPPM | 1500 W (10/1000 µs waveform) - sustains high-energy surges common in automotive load-dump and inductive switching |
| IFSM | 200 A (8.3 ms half-sine) - withstands repetitive motor commutation spikes without bond-wire failure |
| TJ max. | +175 °C - enables placement near heat-generating power stages without derating penalties |
| RθJA | 75 °C/W - informs heatsink-free operation up to 6.5 W continuous dissipation at TL = 75 °C |
Pinout & Package
Package: JEDEC 1.5KE molded epoxy case (Case Style 1.5KE), axial-leaded, RoHS-compliant matte tin-plated terminals. Dimensions: 5.3 mm diameter × 9.5 mm length, lead spacing 7.2 mm, lead diameter 1.07 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to protected circuit ground or low-side return path for clamping to reference |
| Cathode | Current exit point; marked by color band | Connected to line being protected (e.g., 12 V supply rail); absorbs positive transients into ground |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable VBR tolerance (±5 %) and long-term reliability under humidity and thermal cycling |
| AEC-Q101 qualified | Validated for automotive applications including powertrain and body electronics per stress test requirements |
| 1500 W peak pulse power | Handles ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-5 Combination Wave surges without degradation |
| Clamping time <1 ns | Responds before sensitive logic or analog front-ends experience overvoltage damage |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising ESD or lightning-induced transients |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Clamp |
|---|---|
Use Scenario: 12 V battery-fed ECUs exposed to load-dump transients up to 40 V for 400 ms. IC Role / Device Role / Timing Role: Primary clamping element placed between input rail and ground, conducting only during overvoltage events. Use Value: Limits rail voltage to ≤15.6 V, protecting downstream LDOs, microcontrollers, and CAN transceivers from permanent damage. |
Use Scenario: 4–20 mA current-loop sensor outputs routed through noisy factory environments with EMI coupling. IC Role / Device Role / Timing Role: Bidirectional suppression is not used; unidirectional 1.5KE11HE3/54 clamps positive transients on the signal return path. Use Value: Prevents op-amp input stage latch-up during 1 kV EFT bursts by clamping within 1 ns at sub-16 V. |
| Telecom DSL Line Surge Guard | MOSFET Gate Protection |
Use Scenario: Outdoor DSL line cards subjected to induced lightning surges per ITU-T K.20/21. IC Role / Device Role / Timing Role: First-stage protector on line-side transformer secondary, shunting surge energy to chassis ground. Use Value: Withstands 10/1000 µs 1500 W pulses while maintaining <5 µA leakage at 9.4 V operating voltage. |
Use Scenario: High-side N-channel MOSFET gate driven by 10 V logic in motor H-bridge inverters. IC Role / Device Role / Timing Role: Connected anode-to-ground, cathode-to-gate to clamp Miller-induced voltage spikes during switching. Use Value: Clamps gate-source voltage to ≤15.6 V, preventing oxide breakdown and ensuring robust 100% duty-cycle operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ10A | Lower PPPM (600 W), smaller SMB package (3.5 mm × 4.5 mm), VC = 17 V @ 35.3 A | Better suited for space-constrained PCBs with lower-energy transients (IEC 61000-4-2 ESD only) | Select when board area is critical and surge energy does not exceed 600 W; verify thermal performance in confined layouts. |
| 1.5KE11A-E3/54 | Same electrical specs but commercial-grade (non-AEC-Q101), identical 1.5KE package and pinout | Approved for industrial/commercial use only; not validated for automotive temperature cycling or vibration stress | Choose for cost-sensitive non-automotive designs where AEC-Q101 qualification is unnecessary. |
Compared with SMBJ10A and 1.5KE11A-E3/54, the 1.5KE11HE3/54 uniquely combines AEC-Q101 qualification, 1500 W surge capacity, and axial-leaded mechanical robustness - making it the preferred choice for automotive power modules and industrial equipment requiring field-proven reliability under harsh thermal and mechanical stress.
Availability
1.5KE11HE3/54 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interface boards, and telecom line-card surge protection requiring stable component supply across multi-year production cycles.
Supply support for 1.5KE11HE3/54 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 1.5KE series was engineered specifically for high-energy transient suppression in automotive power systems and industrial infrastructure, emphasizing rugged packaging, AEC-Q101 compliance, and consistent clamping performance under thermal stress.
FAQ
What is the clamping voltage of the 1.5KE11HE3/54 under maximum rated surge current?
The 1.5KE11HE3/54 has a maximum clamping voltage (VC) of 15.6 V when subjected to its peak pulse current (IPPM) of 96.2 A using the standardized 10/1000 µs waveform. This value is measured per JEDEC test conditions and ensures downstream components remain within safe operating voltage limits during surge events. The 1.5KE11HE3/54 achieves this clamping performance while maintaining low incremental surge resistance and sub-nanosecond response time.
Is the 1.5KE11HE3/54 qualified for automotive applications?
Yes, the 1.5KE11HE3/54 carries AEC-Q101 qualification, confirmed in Vishay's official documentation for the HE3 suffix variant. This qualification covers stress tests including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing - validating its suitability for under-hood and powertrain applications. The 1.5KE11HE3/54 is explicitly listed in the AEC-Q101 qualified subset covering 1.5KE6.8AHE3_B through 1.5KE220AHE3_B.
How does the 1.5KE11HE3/54 differ from the standard 1.5KE11A-E3/54?
The 1.5KE11HE3/54 differs from 1.5KE11A-E3/54 solely in qualification level: the HE3 suffix denotes AEC-Q101 qualification and enhanced whisker resistance (JESD 201 Class 2), while the E3 suffix indicates commercial-grade RoHS compliance only. Electrically and mechanically, both share identical VBR, VWM, VC, package outline, and thermal characteristics. The 1.5KE11HE3/54 is the appropriate selection for automotive designs requiring certified reliability.
What is the maximum operating temperature for the 1.5KE11HE3/54?
The 1.5KE11HE3/54 has a maximum junction temperature (TJ) rating of +175 °C and an operating junction/storage temperature range of -55 °C to +175 °C. This wide range supports deployment in engine compartments, industrial motor drives, and outdoor telecom enclosures. Derating curves in the datasheet show usable power dissipation down to zero watts at 175 °C ambient when mounted on standard PCB land patterns.
Can the 1.5KE11HE3/54 be used in bidirectional configurations?
No, the 1.5KE11HE3/54 is a unidirectional TVS diode, as indicated by the "A" suffix (not "CA"). Bidirectional variants in the 1.5KE family use the "CA" suffix (e.g., 1.5KE11CA) and are only available from 1.5KE6.8CA to 1.5KE220CA per Vishay's datasheet notes. Using the 1.5KE11HE3/54 for bidirectional protection would leave negative-going transients unclamped; a dedicated bidirectional part must be selected for such applications.
1.5KE11HE3/54 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):
- 8.92V
- Voltage - Breakdown (Min):
- 9.9V
- Voltage - Clamping (Max) @ Ipp:
- 16.2V
- Current - Peak Pulse (10/1000µs):
- 92.6A
- 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
1.5KE11HE3/54 FAQ
1.How can I place an order for 1.5KE11HE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE11HE3/54 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 1.5KE11HE3/54 reliable?
The price and inventory of 1.5KE11HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE11HE3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE11HE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE11HE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE11HE3/54?
1.5KE11HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE11HE3/54 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 1.5KE11HE3/54?
For technical support, including 1.5KE11HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE11HE3/54 requirements.
6.How does Aetrix verify that 1.5KE11HE3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE11HE3/54 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 1.5KE11HE3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE11HE3/54?
All 1.5KE11HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE11HE3/54, 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 1.5KE11HE3/54 part is unused and in its original packaging.
Return procedure for 1.5KE11HE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE11HE3/54 Tags
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