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Vishay General Semiconductor - Diodes Division 1.5KA10AHE3/51
- Part No.:
- 1.5KA10AHE3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KA10AHE3/51.pdf
- Description:
- TVS DIODE 8.55VWM 14.5VC 1.5KA
- Quantity:
- Payment:
- Shipping:
Inventory:5,751
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Product details
Overview
1.5KA10AHE3/51 from Vishay General Semiconductor is a unidirectional automotive-grade transient voltage suppressor (TVS) diode designed for high-reliability overvoltage protection in harsh environments. It delivers 1500 W peak pulse power (10/1000 µs), clamps at ≤14.5 V under 103 A surge, and operates up to +185 °C junction temperature. It is AEC-Q101 qualified and used to protect MOSFETs and sensor signal lines in automotive powertrain control modules.
For engineers reviewing the 1.5KA10AHE3/51 datasheet, 1.5KA10AHE3/51 pinout, 1.5KA10AHE3/51 application, or 1.5KA10AHE3/51 equivalent, key selection criteria include its 9.5–10.5 V breakdown range, 8.55 V stand-off voltage, 20 µA max reverse leakage at VWM, 1500 W surge rating, and RoHS-compliant HE3 packaging with JESD201 Class 2 whisker resistance.
Technical Context
This TVS diode employs Vishay's patented PAR® construction for stable clamping under repetitive transients and high-temperature operation. Its unidirectional polarity enables precise anode-to-ground placement in DC supply rails, and its low incremental surge resistance ensures minimal voltage overshoot during fast 10/1000 µs surges.
The device is characterized for automotive-grade reliability: it meets AEC-Q101 stress tests, supports soldering at 260 °C for 40 s, and maintains performance across −65 °C to +185 °C junction temperature range - critical for under-hood electronics exposed to thermal cycling and load dump events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VBR) | 9.5 V min / 10.5 V max at 1.0 mA - defines reliable conduction onset without premature triggering |
| Stand-off Voltage (VWM) | 8.55 V - maximum continuous DC or RMS voltage before leakage exceeds 20 µA |
| Clamping Voltage (VC) | ≤14.5 V at 103 A IPPM - limits protected circuit voltage during worst-case surge |
| Peak Pulse Power (PPPM) | 1500 W (10/1000 µs) - sustains automotive load dump and ISO 7637-2 pulse 5a energy |
| Junction Temperature Range | −65 °C to +185 °C - enables deployment in engine control units and transmission ECUs |
| Surge Current (IPPM) | 103 A (10/1000 µs) - withstands high-current transients without parametric shift |
| Reverse Leakage (ID) | ≤20 µA at VWM, ≤200 µA at TJ = 150 °C - ensures low standby power loss in always-on systems |
Pinout & Package
Case Style 1.5KA: molded epoxy body with matte tin-plated leads; cathode denoted by color band; compliant with UL 94 V-0 flammability rating. Lead length 0.375" (9.5 mm); diameter 0.042" (1.07 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to ground or low-impedance return path in unidirectional TVS configuration |
| Cathode | Current exit point; marked by color band | Connected to protected line (e.g., 12 V rail or sensor output) to clamp positive transients |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Enables stable VBR and low dynamic impedance across temperature and lifetime |
| AEC-Q101 qualification | Validated for automotive under-hood use including temperature cycling, HTRB, and surge endurance |
| 1500 W peak pulse power | Meets ISO 7637-2 Pulse 5a (load dump) requirements for 12 V systems |
| HE3 RoHS-compliant packaging | Matte tin plating passes JESD201 Class 2 whisker test and J-STD-002 solderability |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage stress on downstream ICs while maintaining margin to system max rating |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive Interface |
|---|---|
Use Scenario: Protects microcontroller I/O and CAN transceiver power rails from alternator load dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 12 V supply and ground to clamp positive transients before they reach LDOs or interface ICs. Use Value: Clamps to ≤14.5 V at 103 A, preventing latch-up or gate oxide damage in 5 V/3.3 V logic powered from buck converters. | Use Scenario: Shields encoder feedback lines and gate driver supplies in variable-frequency drives exposed to switching noise and relay bounce. IC Role / Device Role / Timing Role: Mounted at connector entry point to absorb 10/1000 µs surges induced by contactor switching and regenerative braking. Use Value: 185 °C max junction temperature allows direct PCB mounting near heat-generating IGBT modules without derating. |
| Automotive Body Control Module (BCM) | Telecom Power Supply Input Stage |
Use Scenario: Safeguards LIN bus transceivers and window lift motor drivers against battery reversal and jump-start transients. IC Role / Device Role / Timing Role: Placed on 12 V input rail upstream of DC/DC converter to limit surge energy entering the power tree. Use Value: 20 µA max reverse leakage at 8.55 V ensures minimal quiescent current draw in always-on sleep modes. | Use Scenario: Protects AC-DC front-end rectifiers and PFC controllers from lightning-induced surges on -48 V telecom distribution lines. IC Role / Device Role / Timing Role: Used as secondary clamping device after MOVs to handle residual fast-rising edges (<100 ns) that bypass bulk suppression. Use Value: 10/1000 µs waveform rating aligns with IEC 61000-4-5 Combination Wave Generator test profiles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ10AHE3/52 | Same VBR range (9.5–10.5 V), lower PPPM (600 W), SMB package (smaller footprint, lower thermal mass) | Suitable for space-constrained consumer or industrial boards where full 1500 W surge is not required | Select when board area is limited and peak surge energy is below 150 mJ |
| 1.5KE10A | Same electrical specs but TO-204AA (DO-41) package; no AEC-Q101 qualification; higher lead inductance | Acceptable for non-automotive industrial use where qualification and thermal robustness are secondary | Choose only for cost-sensitive, non-automotive designs with relaxed reliability requirements |
Compared with SMBJ10AHE3/52 and 1.5KE10A, the 1.5KA10AHE3/51 provides superior thermal robustness (185 °C TJ), automotive qualification, and higher surge capacity - making it the sole choice for AEC-Q101-compliant 12 V power rail protection where sustained reliability under thermal stress is mandatory.
Availability
1.5KA10AHE3/51 is available at Aetrix Electronics and suitable for automotive ECU design, industrial motor drive development, and telecom power supply validation requiring stable component supply and long-term lifecycle support.
Supply support for 1.5KA10AHE3/51 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 optoelectronics for demanding industrial and automotive applications.
The 1.5KA series was engineered specifically for AEC-Q101-compliant transient suppression in automotive power systems, emphasizing thermal stability, surge endurance, and process-controlled consistency across temperature extremes.
FAQ
What is the breakdown voltage tolerance of the 1.5KA10AHE3/51?
The 1.5KA10AHE3/51 has a specified breakdown voltage (VBR) range of 9.5 V minimum to 10.5 V maximum at 1.0 mA test current. This ±5% tolerance ensures consistent clamping behavior across production lots and supports reliable design margining against system overvoltage thresholds. The value is measured per ANSI/IEEE C62.35 standards using a square-wave pulse of 300 µs duration.
Is the 1.5KA10AHE3/51 suitable for bidirectional transient protection?
No, the 1.5KA10AHE3/51 is unidirectional only, as confirmed in the Vishay datasheet Document Number 88300. It protects against positive-going transients on a line referenced to ground. For bidirectional protection (e.g., data lines subject to ± surges), a dedicated bidirectional TVS such as the SMAJ10A must be selected - the 1.5KA10AHE3/51 lacks symmetrical breakdown characteristics and will not conduct on negative excursions.
What does the "HE3" suffix indicate on the 1.5KA10AHE3/51?
On the 1.5KA10AHE3/51, the "HE3" suffix denotes RoHS-compliant, high-reliability automotive-grade packaging: matte tin-plated leads meeting J-STD-002 solderability and JESD22-B102 solder dip requirements, plus JESD201 Class 2 whisker resistance. It confirms compliance with AEC-Q101 qualification and distinguishes this variant from non-automotive versions like 1.5KA10A.
How does the 1.5KA10AHE3/51 perform at elevated temperatures?
The 1.5KA10AHE3/51 maintains full functionality up to +185 °C junction temperature, with derated surge capability above 25 °C ambient per Figure 2 in the datasheet. At 150 °C, its reverse leakage remains ≤200 µA at VWM, and clamping voltage increases only marginally due to PAR® construction stability - enabling reliable operation in engine bay environments without external heatsinking.
Can the 1.5KA10AHE3/51 replace the 1.5KE10A in an existing design?
The 1.5KA10AHE3/51 is not a drop-in replacement for the 1.5KE10A: although both share identical VBR and PPPM ratings, the 1.5KA10AHE3/51 uses Case Style 1.5KA (larger than DO-41), requires different PCB footprint and thermal layout, and is AEC-Q101 qualified - whereas the 1.5KE10A is not. Migration requires mechanical and thermal revalidation.
1.5KA10AHE3/51 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):
- 8.55V
- Voltage - Breakdown (Min):
- 9.5V
- Voltage - Clamping (Max) @ Ipp:
- 14.5V
- Current - Peak Pulse (10/1000µs):
- 103A
- 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
1.5KA10AHE3/51 FAQ
1.How can I place an order for 1.5KA10AHE3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KA10AHE3/51 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 1.5KA10AHE3/51 reliable?
The price and inventory of 1.5KA10AHE3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KA10AHE3/51 is usually 5 days.
3.What payment methods are accepted for 1.5KA10AHE3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KA10AHE3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KA10AHE3/51?
1.5KA10AHE3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KA10AHE3/51 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 1.5KA10AHE3/51?
For technical support, including 1.5KA10AHE3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KA10AHE3/51 requirements.
6.How does Aetrix verify that 1.5KA10AHE3/51 is sourced from the original manufacturer or authorized distributors?
All 1.5KA10AHE3/51 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 1.5KA10AHE3/51 meets industry standards.
7.What is the process for return or replacement of 1.5KA10AHE3/51?
All 1.5KA10AHE3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KA10AHE3/51, 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 1.5KA10AHE3/51 part is unused and in its original packaging.
Return procedure for 1.5KA10AHE3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KA10AHE3/51 Tags
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