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Vishay General Semiconductor - Diodes Division 1.5KE10HE3/73
- Part No.:
- 1.5KE10HE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE10HE3/73.pdf
- Description:
- TVS DIODE 8.1VWM 15VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:3,152
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Product details
Overview
1.5KE10HE3/73 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection on DC power rails and signal lines. It features a 10 V standoff voltage (VWM), 9.5–10.5 V breakdown voltage (VBR) at 1 mA, 14.5 V clamping voltage (VC) at 103 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - used in automotive power supply inputs and industrial sensor interfaces.
For engineers reviewing the 1.5KE10HE3/73 datasheet, 1.5KE10HE3/73 pinout, 1.5KE10HE3/73 application, or 1.5KE10HE3/73 equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), lead-free RoHS compliance (HE3 suffix), and design-meaningful clamping performance data for surge immunity validation.
Technical Context
The 1.5KE10HE3/73 employs a glass-passivated silicon junction optimized for fast transient response (<1 ns) and low incremental surge resistance. Its unidirectional polarity uses a cathode band marking and supports DC-biased protection where reverse conduction must be blocked during normal operation.
Rated for 175 °C maximum junction temperature and 200 A non-repetitive forward surge current (8.3 ms half-sine), it operates across –55 °C to +175 °C and is qualified to AEC-Q101 for automotive under-hood applications - confirmed for HE3 suffix variants per Document 88301, Note (2).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 8.55 V - maximum continuous reverse voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 9.5–10.5 V at 1 mA - precise voltage threshold triggering avalanche conduction during transients. |
| VC (Clamping Voltage) | 14.5 V at 103 A (10/1000 µs) - limits downstream voltage stress during worst-case surge events. |
| PPPM (Peak Pulse Power) | 1500 W - sustains high-energy lightning-induced surges (IEC 61000-4-5 Level 4) without failure. |
| RθJA | 75 °C/W - determines required PCB copper area or heatsinking for thermal management at 6.5 W steady-state dissipation. |
| IFSM | 200 A (8.3 ms half-sine) - withstands motor-switching or relay-coil turn-off surges without bond-wire fusing. |
| TJ Range | –55 °C to +175 °C - enables deployment in engine control units, industrial PLCs, and outdoor telecom equipment. |
Pinout & Package
Package: Case Style 1.5KE - axial-leaded DO-201AD molded epoxy package with matte tin-plated leads, UL 94 V-0 rated, 0.375" (9.5 mm) lead length standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to system ground or low-side reference; completes clamping loop during positive transients. |
| Cathode | Protected line connection / Clamping node | Connected to the line being protected (e.g., 12 V rail); color band identifies this terminal for correct orientation. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable, repeatable avalanche characteristics over lifetime and temperature - critical for automotive reliability. |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive-grade production use including under-hood environments with extended temperature cycling. |
| 1500 W peak pulse power (10/1000 µs) | Meets IEC 61000-4-5 surge immunity requirements for industrial and automotive power inputs without derating. |
| Clamping response time <1 ns | Protects sensitive ICs (e.g., CAN transceivers, microcontrollers) before voltage overshoot exceeds safe thresholds. |
| RoHS-compliant, JESD 201 Class 2 whisker resistant | Ensures long-term solder joint integrity in high-reliability assemblies with no tin whisker risk. |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: 12 V battery feed to body control module exposed to load dump (ISO 7637-2 Pulse 5a) and alternator transients. IC Role / Device Role / Timing Role: Primary clamping device placed directly at connector entry point to limit voltage seen by LDOs and MCU power pins. Use Value: Clamps to 14.5 V at 103 A, preventing damage to 16 V-rated input stages while surviving repeated 1500 W surges. |
Use Scenario: 4–20 mA current loop interface in factory automation sensors subjected to ESD and inductive switching noise. IC Role / Device Role / Timing Role: Bidirectional-capable variant not applicable; this unidirectional part protects only the powered side (e.g., supply rail to op-amp front-end). Use Value: Sub-1 ns response ensures analog signal integrity remains intact during 8 kV contact ESD events per IEC 61000-4-2. |
| Telecom DC Power Feeds | Consumer Appliance Motor Drive Inputs |
Use Scenario: –48 V DC power input to remote radio head in cellular base station infrastructure. IC Role / Device Role / Timing Role: Unidirectional TVS on negative rail to suppress lightning-induced surges entering via outdoor cabling. Use Value: Withstands 1500 W pulses and operates up to +175 °C ambient - suitable for sealed, fanless enclosures. |
Use Scenario: AC/DC adapter output feeding BLDC motor driver in smart HVAC systems. IC Role / Device Role / Timing Role: Front-end overvoltage clamp on 24 V DC bus to protect gate drivers and current sense amplifiers. Use Value: 200 A surge rating handles commutation spikes from motor back-EMF without degradation over 100,000 cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ10A | Lower PPPM (600 W), smaller SMB package (lower RθJA = 40 °C/W), same VWM/VBR range | Better suited for space-constrained PCBs with moderate surge exposure (IEC 61000-4-5 Level 2) | Select SMBJ10A when board area is limited and full 1500 W capability is unnecessary. |
| 1.5KE10A-E3/54 | Same electrical specs, but commercial-grade (non-AEC-Q101), E3 suffix (JESD 201 Class 1A whisker test) | Approved for consumer and industrial use; not qualified for automotive production | Choose 1.5KE10A-E3/54 for cost-sensitive non-automotive designs requiring identical clamping performance. |
Compared with 1.5KE10HE3/73, SMBJ10A trades peak power for compactness and thermal efficiency, while 1.5KE10A-E3/54 retains identical protection capability but omits automotive qualification - enabling selection based on environmental rigor and mechanical constraints.
Availability
1.5KE10HE3/73 is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLC I/O modules, and telecom power supplies requiring stable component supply with AEC-Q101 assurance and long-lifecycle support.
Supply support for 1.5KE10HE3/73 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 and application-specific performance.
The 1.5KE series was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where robustness against lightning, ESD, and inductive switching is mandatory.
FAQ
What is the clamping voltage of the 1.5KE10HE3/73 at its rated peak pulse current?
The 1.5KE10HE3/73 has a maximum clamping voltage (VC) of 14.5 V at 103 A peak pulse current with a 10/1000 µs waveform. This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during worst-case surge events - a key parameter for ensuring downstream ICs remain within absolute maximum ratings.
Is the 1.5KE10HE3/73 qualified for automotive applications?
Yes, the 1.5KE10HE3/73 is AEC-Q101 qualified, as confirmed in Vishay Document 88301, Note (2), which explicitly lists "1.5KE6.8AHE3_B to 1.5KE220AHE3_B" as qualified variants. The HE3 suffix denotes RoHS compliance and JESD 201 Class 2 whisker resistance - both required for automotive production use.
What does the "HE3/73" suffix indicate in 1.5KE10HE3/73?
The "HE3" portion indicates RoHS compliance and AEC-Q101 qualification with JESD 201 Class 2 whisker resistance; "/73" is Vishay's packaging code denoting 750 pieces per 13" paper tape and reel. This differs from "/54" (1400 pcs/reel) and confirms the part is supplied in standard automotive logistics format.
How does the 1.5KE10HE3/73 compare to bidirectional TVS diodes like 1.5KE10CA?
The 1.5KE10HE3/73 is unidirectional and features a cathode band for polarity-sensitive placement on DC rails; 1.5KE10CA is bidirectional with symmetrical clamping in both directions and no polarity marking. Use 1.5KE10HE3/73 where reverse conduction must be blocked - e.g., protecting positive supply lines referenced to ground - and 1.5KE10CA for AC-coupled or floating signal paths.
What is the thermal resistance of the 1.5KE10HE3/73, and how does it affect layout?
The 1.5KE10HE3/73 has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W. To maintain TJ ≤ 175 °C at full 6.5 W steady-state dissipation, the PCB must provide ≥ 1.5 in² (10 cm²) of 2 oz copper pour connected to both leads - underscoring the need for generous copper land patterns and thermal vias in high-power or high-ambient designs.
1.5KE10HE3/73 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):
- 8.1V
- Voltage - Breakdown (Min):
- 9V
- Voltage - Clamping (Max) @ Ipp:
- 15V
- Current - Peak Pulse (10/1000µs):
- 100A
- 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
1.5KE10HE3/73 FAQ
1.How can I place an order for 1.5KE10HE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE10HE3/73 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 1.5KE10HE3/73 reliable?
The price and inventory of 1.5KE10HE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE10HE3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KE10HE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE10HE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE10HE3/73?
1.5KE10HE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE10HE3/73 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 1.5KE10HE3/73?
For technical support, including 1.5KE10HE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE10HE3/73 requirements.
6.How does Aetrix verify that 1.5KE10HE3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE10HE3/73 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 1.5KE10HE3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE10HE3/73?
All 1.5KE10HE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE10HE3/73, 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 1.5KE10HE3/73 part is unused and in its original packaging.
Return procedure for 1.5KE10HE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE10HE3/73 Tags
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