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Vishay General Semiconductor - Diodes Division 1.5KA10HE3/51
- Part No.:
- 1.5KA10HE3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KA10HE3/51.pdf
- Description:
- TVS DIODE 8.1VWM 15VC 1.5KA
- Quantity:
- Payment:
- Shipping:
Inventory:5,632
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Product details
Overview
1.5KA10HE3/51 from Vishay General Semiconductor is a unidirectional automotive-grade transient voltage suppressor (TVS) diode designed for clamping inductive switching surges and lightning-induced transients on power rails and signal lines. It delivers 1500 W peak pulse power (10/1000 µs), has a breakdown voltage of 9.0–11.0 V, clamps to ≤15.0 V at 100 A, and operates up to +185 °C junction temperature - deployed in engine control units and automotive sensor interfaces.
For engineers reviewing the 1.5KA10HE3/51 datasheet, 1.5KA10HE3/51 pinout, 1.5KA10HE3/51 application, or 1.5KA10HE3/51 equivalent, key selection criteria include AEC-Q101 qualification, 100 A peak pulse current rating, low clamping voltage under surge, high-temperature reliability, and RoHS-compliant HE3 packaging with JESD201 Class 2 whisker resistance.
Technical Context
This TVS diode uses patented PAR® construction for stable clamping under repetitive surge stress and features a molded epoxy case rated UL 94 V-0. Its unidirectional polarity enables DC rail protection with cathode-anode orientation aligned to forward-biased system grounding.
Designed for automotive environments, it supports operation from –65 °C to +185 °C, maintains <20 µA reverse leakage at 8.1 V stand-off voltage (VWM), and exhibits a +0.073 %/°C temperature coefficient of breakdown voltage - ensuring predictable voltage margin across thermal extremes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 µs) | 1500 W - sustains single high-energy transients without failure in automotive load-dump or ISO 7637-2 scenarios |
| Breakdown Voltage (VBR) | 9.0–11.0 V at 1.0 mA - defines precise clamping onset threshold for 12 V system rail protection |
| Clamping Voltage (VC) | ≤15.0 V at 100 A IPPM - limits downstream IC voltage stress during worst-case surge events |
| Stand-off Voltage (VWM) | 8.10 V - ensures no conduction during normal 12 V nominal operation, minimizing standby leakage |
| Operating Temperature Range | –65 °C to +185 °C - validated for under-hood placement per AEC-Q101 stress testing |
| Surge Current (IFSM) | 200 A (8.3 ms half-sine) - withstands repeated motor commutation or relay coil de-energization surges |
| RoHS & Reliability | RoHS-compliant HE3 suffix; passes JESD201 Class 2 whisker test and AEC-Q101 qualification |
Pinout & Package
Case Style 1.5KA: axial-leaded DO-201AD package with matte tin-plated leads, 0.375" (9.5 mm) lead length, UL 94 V-0 molded epoxy body, cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference node for unidirectional clamping | Connected to ground or low-side return path; defines forward conduction direction during surge |
| Cathode | Protected line connection point | Connected to protected 12 V rail or signal line; conducts when transient exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Enables consistent clamping performance over 1000+ surge cycles without parameter drift |
| AEC-Q101 qualification | Validated for automotive under-hood use including temperature cycling, humidity bias, and mechanical shock |
| 1500 W peak pulse rating | Meets ISO 7637-2 Pulse 5a (load dump) energy requirements for 12 V systems |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., inductive kick from solenoids) |
| JESD201 Class 2 whisker resistance | Prevents tin whisker growth in high-reliability automotive modules operating >10 years |
Applications
| Engine Control Unit (ECU) Power Input | Automotive Sensor Signal Line Protection |
|---|---|
Use Scenario: Protects ECU main 12 V supply against alternator load dump and battery disconnect transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamps positive-going surges above 9.0 V while remaining non-conductive during normal operation. Use Value: Limits input voltage to ≤15.0 V during 100 A surge, preventing damage to LDOs, microcontrollers, and CAN transceivers. | Use Scenario: Shields analog outputs of pressure/temperature sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Fast-response TVS shunts sub-100 ns ESD pulses before they reach precision ADC front-ends. Use Value: Clamps transients to <15 V within nanoseconds, preserving sensor accuracy and avoiding latch-up in signal conditioning ICs. |
| Body Control Module (BCM) Relay Driver Output | Infotainment System USB/UART Interface |
Use Scenario: Suppresses inductive kickback from door lock actuators and window motor drivers. IC Role / Device Role / Timing Role: Absorbs 200 A 8.3 ms half-sine surges generated by relay coil de-energization. Use Value: Prevents voltage reversal and cross-talk into adjacent MCU I/O pins, maintaining functional safety integrity. | Use Scenario: Guards UART lines between head unit and display module against hot-plug transients and board-level ESD. IC Role / Device Role / Timing Role: Low-capacitance unidirectional clamping protects 3.3 V logic-level serial interfaces without signal distortion. Use Value: Maintains <20 µA leakage at 3.3 V operation while clamping 1500 W surges to safe levels for transceiver ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ10A | 600 W peak power, 10.0–11.1 V VBR, DO-214AA package, lower surge rating | Rated for consumer/industrial use only; not AEC-Q101 qualified | Select when cost sensitivity outweighs automotive qualification and surge margin requirements |
| 1.5KE10A | Same 1500 W rating but TO-277 package, no HE3 whisker compliance, 175 °C max TJ | Lacks JESD201 Class 2 qualification; used in non-critical under-dash modules | Choose where PCB space allows surface-mount and long-term whisker risk is acceptable |
Compared with SMBJ10A and 1.5KE10A, the 1.5KA10HE3/51 uniquely combines AEC-Q101 qualification, JESD201 Class 2 whisker resistance, and 185 °C junction rating - making it the only option qualified for direct engine compartment deployment with zero derating at 150 °C ambient.
Availability
1.5KA10HE3/51 is available at Aetrix Electronics and suitable for automotive ECUs, body control modules, sensor interface designs, and infotainment subsystems requiring stable component supply under extended temperature and high-reliability conditions.
Supply support for 1.5KA10HE3/51 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 automotive, industrial, and computing markets.
The 1.5KA series is part of Vishay's automotive TVS portfolio, engineered specifically for AEC-Q101 compliance and under-hood transient immunity - targeting robust protection in 12 V and 24 V vehicle electrical architectures.
FAQ
What is the maximum clamping voltage of the 1.5KA10HE3/51 under a 100 A surge?
The 1.5KA10HE3/51 has a maximum clamping voltage (VC) of 15.0 V when subjected to a 100 A peak pulse current with a 10/1000 µs waveform. This value is guaranteed per the Vishay datasheet Document Number 88300 and ensures downstream components remain within safe operating voltage limits during standardized surge events such as ISO 7637-2 Pulse 5a. The 1.5KA10HE3/51 achieves this with low incremental surge resistance and stable PAR® junction design.
Is the 1.5KA10HE3/51 qualified for automotive applications?
Yes, the 1.5KA10HE3/51 is AEC-Q101 qualified and designated as an automotive-grade component. Its HE3 suffix confirms compliance with JESD201 Class 2 whisker testing and RoHS Directive 2002/95/EC. The device is rated for operation from –65 °C to +185 °C and is explicitly intended for under-hood and engine bay use in vehicles. The 1.5KA10HE3/51 meets all stress test requirements defined in the AEC-Q101 standard for transient voltage suppressors.
What does the "HE3" suffix mean in 1.5KA10HE3/51?
The "HE3" suffix in 1.5KA10HE3/51 indicates a high-reliability, RoHS-compliant variant with matte tin-plated leads that pass JESD201 Class 2 whisker testing. It also signifies qualification to AEC-Q101 for automotive use and compliance with UL 94 V-0 flammability standards for the epoxy molding compound. The 1.5KA10HE3/51 is not a generic industrial part - the HE3 designation ties directly to its suitability for long-life, mission-critical automotive modules.
How does the 1.5KA10HE3/51 differ from the 1.5KA10A variant?
The 1.5KA10HE3/51 and 1.5KA10A share identical electrical characteristics - including VBR (9.5–10.5 V), VWM (8.55 V), and VC (14.5 V) - but differ in packaging and qualification. The 1.5KA10HE3/51 carries the HE3 suffix denoting JESD201 Class 2 whisker resistance and AEC-Q101 qualification, whereas 1.5KA10A lacks the HE3-specific reliability testing. The 1.5KA10HE3/51 is therefore approved for direct engine compartment use, while 1.5KA10A is typically used in less demanding locations.
What is the stand-off voltage (VWM) and why is it critical for the 1.5KA10HE3/51?
The stand-off voltage (VWM) of the 1.5KA10HE3/51 is 8.10 V, meaning it remains non-conductive up to this DC voltage level - essential for compatibility with nominal 12 V automotive systems where normal operating voltage ranges from ~9 V (cranking) to ~14.5 V (charging). Exceeding VWM risks leakage current and thermal runaway; the 1.5KA10HE3/51's 8.10 V VWM provides a safe margin below typical minimum battery voltage while enabling reliable clamping onset just above system noise floor.
1.5KA10HE3/51 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- PAR®
- Packaging:
- Bulk
- 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:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KA
1.5KA10HE3/51 FAQ
1.How can I place an order for 1.5KA10HE3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KA10HE3/51 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 1.5KA10HE3/51 reliable?
The price and inventory of 1.5KA10HE3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KA10HE3/51 is usually 5 days.
3.What payment methods are accepted for 1.5KA10HE3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KA10HE3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KA10HE3/51?
1.5KA10HE3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KA10HE3/51 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 1.5KA10HE3/51?
For technical support, including 1.5KA10HE3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KA10HE3/51 requirements.
6.How does Aetrix verify that 1.5KA10HE3/51 is sourced from the original manufacturer or authorized distributors?
All 1.5KA10HE3/51 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 1.5KA10HE3/51 meets industry standards.
7.What is the process for return or replacement of 1.5KA10HE3/51?
All 1.5KA10HE3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KA10HE3/51, 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 1.5KA10HE3/51 part is unused and in its original packaging.
Return procedure for 1.5KA10HE3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KA10HE3/51 Tags
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