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Vishay General Semiconductor - Diodes Division 1.5KE11HE3/73
- Part No.:
- 1.5KE11HE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE11HE3/73.pdf
- Description:
- TVS DIODE 8.92VWM 16.2VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:7,035
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Product details
Overview
1.5KE11HE3/73 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 11.6 V maximum breakdown voltage (VBR), 9.40 V working peak reverse voltage (VWM), 15.6 V maximum 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 input stages and industrial sensor interface protection.
For engineers reviewing the 1.5KE11HE3/73 datasheet, 1.5KE11HE3/73 pinout, 1.5KE11HE3/73 application, or 1.5KE11HE3/73 equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJL = 15.4 °C/W), JEDEC 1.5KE package dimensions, and design-meaningful clamping performance data for fast transient immunity validation.
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, enabling effective suppression of ESD, lightning-induced surges, and inductive switching transients. Its 1500 W peak pulse power rating is defined per 10/1000 µs waveform with 0.01 % duty cycle, and clamping behavior is characterized up to 96.2 A IPPM.
The device supports high-reliability automotive applications via AEC-Q101 qualification (HE3 suffix), RoHS compliance, matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and JESD 201 Class 2 whisker resistance. Thermal performance is specified with RθJA = 75 °C/W and RθJL = 15.4 °C/W, confirming suitability for lead-mounted PCB layouts without heatsinking under moderate surge duty.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (max) | 11.6 V at 1.0 mA test current - defines upper limit of reliable reverse breakdown onset for overvoltage detection margin |
| VWM | 9.40 V - maximum continuous reverse operating voltage before leakage exceeds 5 µA; sets safe DC rail operating ceiling |
| VC @ IPPM | 15.6 V at 96.2 A - clamped voltage during full 1500 W transient; determines protected circuit's maximum stress exposure |
| PPPM | 1500 W (10/1000 µs) - peak surge energy handling capacity; validates robustness against IEC 61000-4-5 Level 4 surges |
| IFSM | 200 A (8.3 ms half-sine) - forward surge current rating; supports protection of upstream rectifiers or switches during fault events |
| TJ max | +175 °C - enables operation in under-hood automotive environments and high-ambient industrial enclosures |
| RθJL | 15.4 °C/W - low junction-to-lead thermal resistance confirms efficient heat transfer to PCB copper through leads |
Pinout & Package
Package: JEDEC-standard Case Style 1.5KE - molded epoxy body with matte tin-plated axial leads; 0.375" (9.5 mm) lead length; UL 94 V-0 rated compound; RoHS-compliant and AEC-Q101 qualified (HE3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., GND or return path); conducts during positive transients when cathode is biased higher |
| Cathode | Reverse-biased clamping terminal | Marked with color band; connected to protected line (e.g., 12 V rail); initiates avalanche clamping above VWM |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enables stable, repeatable avalanche characteristics and long-term reliability under repetitive surge stress |
| 1500 W peak pulse power (10/1000 µs) | Validates capability to absorb IEC 61000-4-5 combination wave surges without degradation |
| AEC-Q101 qualified (HE3 suffix) | Confirms qualification for automotive powertrain and body electronics per stress test requirements |
| Sub-nanosecond response time | Clamps transients before sensitive ICs experience overstress - critical for protecting CAN/LIN interfaces and microcontrollers |
| Low incremental surge resistance | Minimizes VC overshoot during high di/dt events, improving clamping precision and system-level immunity |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: 12 V battery-fed ECUs exposed to load dump (ISO 16750-2) and jump-start transients. IC Role / Device Role / Timing Role: Primary unidirectional clamping element placed between battery rail and DC-DC converter input. Use Value: Limits transient voltage to ≤15.6 V, preventing damage to downstream regulators and MCU power supplies. |
Use Scenario: 4–20 mA current loop sensors in factory automation subject to cable ESD and field wiring surges. IC Role / Device Role / Timing Role: Low-capacitance TVS on analog input path, shunting surge energy before op-amp front-end. Use Value: Clamps 1 kV/1 A IEC 61000-4-5 surges within 1 ns while adding <0.5 pF parasitic capacitance. |
| Consumer Power Adapter Output Protection | Telecom DC Feeder Protection |
Use Scenario: USB-C PD adapters with 5–20 V output rails vulnerable to hot-plug and ground bounce. IC Role / Device Role / Timing Role: Unidirectional suppressor on VBUS line, referenced to common-mode ground. Use Value: Maintains 9.40 V stand-off during normal operation and clamps to 15.6 V during 10/1000 µs surges. |
Use Scenario: Central office DSLAM power feeds subjected to lightning-induced longitudinal surges on twisted-pair lines. IC Role / Device Role / Timing Role: Paired unidirectional TVS devices on tip/ring relative to shield, providing differential-mode surge suppression. Use Value: Handles 1500 W pulses without parametric shift, supporting GR-1089-CORE Level 3 surge immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11A | DO-214AA package; 11.1 V VBR min; 17.0 V VC @ 87.7 A; 600 W PPPM | Lower power rating and higher clamping voltage; suited for space-constrained consumer boards | Select SMBJ11A only if surge energy is limited to ≤600 W and board layout cannot accommodate axial 1.5KE footprint. |
| 1.5KE11CA | Bidirectional variant; same VBR/VC specs but symmetrical clamping; no polarity marking | Required for AC-coupled or floating signal lines where polarity reversal occurs (e.g., RS-485, Ethernet PHY) | Choose 1.5KE11CA only when bidirectional protection is mandated; unidirectional 1.5KE11HE3/73 offers lower leakage and tighter VWM margin for DC rails. |
Compared with SMBJ11A, 1.5KE11HE3/73 delivers 2.5× higher surge power handling and 1.4 V lower clamping voltage - critical for protecting 12 V automotive systems. Against 1.5KE11CA, it provides superior DC blocking (5 µA leakage vs. 10 µA) and avoids unnecessary bidirectional complexity on single-polarity rails.
Availability
1.5KE11HE3/73 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, telecom power feeders, and consumer power adapter designs requiring stable component supply with AEC-Q101 assurance and long-lifecycle support.
Supply support for 1.5KE11HE3/73 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, power efficiency, and automotive-grade qualification.
The 1.5KE series was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where failure due to voltage surges must be eliminated by robust, standardized, and qualification-backed components.
FAQ
What is the clamping voltage of the 1.5KE11HE3/73 under maximum surge conditions?
The 1.5KE11HE3/73 exhibits a maximum clamping voltage (VC) of 15.6 V when subjected to its rated peak pulse current of 96.2 A using the standard 10/1000 µs waveform. This value is measured per JEDEC test conditions and represents the highest voltage seen across the device during full-power transient suppression - directly defining the overvoltage stress imposed on downstream circuitry protected by the 1.5KE11HE3/73.
Is the 1.5KE11HE3/73 qualified for automotive applications?
Yes, the 1.5KE11HE3/73 carries the HE3 suffix, which denotes AEC-Q101 qualification per Vishay's documentation (Document Number 88301, Revision 09-Aug-2022). This certification covers stress tests including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing - validating its use in automotive power distribution modules, body control units, and infotainment power supplies.
How does the 1.5KE11HE3/73 differ from the standard 1.5KE11A part?
The 1.5KE11HE3/73 differs from the base 1.5KE11A in three key ways: it is RoHS-compliant (E3), AEC-Q101 qualified (H prefix), and supplied in tape-and-reel packaging (73 suffix denotes 13" reel, 1400 pcs). Electrically and thermally, it matches the 1.5KE11A specification - including VBR = 10.5–11.6 V, VWM = 9.40 V, and VC = 15.6 V - but adds automotive-grade reliability assurance and automated assembly compatibility.
What is the maximum operating temperature for the 1.5KE11HE3/73?
The 1.5KE11HE3/73 has a maximum junction temperature (TJ) rating of +175 °C and a storage temperature range of –55 °C to +175 °C. This allows deployment in under-hood automotive locations, industrial motor drives, and outdoor telecom equipment where ambient temperatures exceed 105 °C - provided PCB copper area and lead thermal paths maintain junction temperature below this limit during surge events.
Does the 1.5KE11HE3/73 have polarity marking, and how is it oriented in circuit?
Yes, the 1.5KE11HE3/73 is unidirectional and features a color band (typically black or dark gray) on the cathode end. In circuit, the banded (cathode) lead connects to the line being protected (e.g., 12 V rail), while the anode connects to ground or the lower-potential reference. This orientation ensures avalanche conduction only during positive transients on the protected line - essential for correct DC rail clamping behavior of the 1.5KE11HE3/73.
1.5KE11HE3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- 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
1.5KE11HE3/73 FAQ
1.How can I place an order for 1.5KE11HE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE11HE3/73 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 1.5KE11HE3/73 reliable?
The price and inventory of 1.5KE11HE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE11HE3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KE11HE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE11HE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE11HE3/73?
1.5KE11HE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE11HE3/73 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 1.5KE11HE3/73?
For technical support, including 1.5KE11HE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE11HE3/73 requirements.
6.How does Aetrix verify that 1.5KE11HE3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE11HE3/73 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 1.5KE11HE3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE11HE3/73?
All 1.5KE11HE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE11HE3/73, 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 1.5KE11HE3/73 part is unused and in its original packaging.
Return procedure for 1.5KE11HE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE11HE3/73 Tags
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