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Vishay General Semiconductor - Diodes Division 1.5KA15HE3/51
- Part No.:
- 1.5KA15HE3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KA15HE3/51.pdf
- Description:
- TVS DIODE 12.1VWM 22VC 1.5KA
- Quantity:
- Payment:
- Shipping:
Inventory:3,584
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Product details
Overview
1.5KA15HE3/51 from Vishay General Semiconductor is a unidirectional automotive-grade transient voltage suppressor (TVS) diode designed for high-energy surge protection in power rails and signal lines. It delivers 1500 W peak pulse power (10/1000 µs), clamps at 22.0 V under 68.2 A peak pulse current, and operates up to +185 °C junction temperature - ideal for protecting MOSFETs and sensor interfaces in automotive engine control units.
For engineers reviewing the 1.5KA15HE3/51 datasheet, 1.5KA15HE3/51 pinout, 1.5KA15HE3/51 application, or 1.5KA15HE3/51 equivalent, key selection criteria include its AEC-Q101 qualification, 13.5–16.3 V breakdown range, low 0.084 %/°C VBR tempco, and RoHS-compliant HE3 packaging with matte tin leads rated for J-STD-002 solderability.
Technical Context
This TVS diode employs Vishay's patented PAR® construction for stable clamping under repeated surge stress and maintains performance across -65 °C to +185 °C operating range. Its unidirectional polarity and 12.1 V stand-off voltage enable direct placement on DC supply lines without reverse-bias leakage concerns.
The device sustains 200 A non-repetitive forward surge (8.3 ms half-sine) and exhibits 3.5 V max forward voltage at 100 A, supporting robust overcurrent handling during load dump events. Its 6.5 W power dissipation rating applies at 75 °C lead temperature with infinite heatsink conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500 W (10/1000 µs waveform; defines maximum transient energy absorption capability) |
| Breakdown Voltage VBR | 13.5–16.3 V at 1.0 mA (ensures reliable triggering above normal 12 V rail noise) |
| Clamping Voltage VC | 22.0 V at 68.2 A IPPM (limits protected circuit voltage during worst-case surge) |
| Stand-off Voltage VWM | 12.1 V (maximum continuous reverse voltage before leakage exceeds 1 µA) |
| Junction Temperature Range | -65 °C to +185 °C (supports under-hood automotive deployment without derating) |
| Surge Current IPPM | 68.2 A (10/1000 µs; quantifies surge-handling capacity for ISO 7637-2 Pulse 5a) |
| Tempco of VBR | 0.084 %/°C (predictable voltage shift over temperature; critical for precision clamp design) |
Pinout & Package
Package: Case Style 1.5KA - molded epoxy body with UL 94 V-0 flammability rating; matte tin-plated axial leads (0.042" diameter), cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connects to lower-potential side (e.g., ground or return path) in unidirectional configuration |
| Cathode | Reverse-biased clamping terminal | Connects to protected line (e.g., 12 V rail); color band identifies this end for correct orientation |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Enables consistent clamping performance and long-term reliability under thermal cycling and repetitive surges |
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces |
| 1500 W peak pulse power | Meets ISO 7637-2 and SAE J1113-11 surge immunity requirements for 12 V systems |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., inductive switch-off spikes) |
| RoHS-compliant HE3 suffix | Meets JESD201 Class 2 whisker resistance and J-STD-002 solderability standards |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive Power Supply |
|---|---|
Use Scenario: Protection of 12 V microcontroller power input against load dump and alternator ripple. IC Role / Device Role: Primary clamping element on main VCC rail upstream of LDO regulators. Use Value: Clamps transients to ≤22.0 V while sustaining 1500 W pulses, preventing MCU brownout or latch-up. |
Use Scenario: Guarding gate driver IC supply against inductive kickback from IGBT switching. IC Role / Device Role: Fast-acting shunt protector on isolated 15 V auxiliary supply rail. Use Value: Responds in <1 ps to limit voltage excursions below 25 V, preserving driver IC integrity. |
| Automotive Sensor Interface Module | Telecom Power Feeding Circuit |
Use Scenario: Shielding LIN bus transceiver inputs from ESD and cable discharge events. IC Role / Device Role: Secondary-level protection placed after common-mode choke but before transceiver pins. Use Value: Limits clamped voltage to 22.0 V at 68.2 A, ensuring transceiver survives ISO 10605 30 kV contact discharge. |
Use Scenario: Safeguarding PoE midspan injector outputs against lightning-induced surges on Ethernet pairs. IC Role / Device Role: Line-side TVS on DC feed path prior to isolation transformer. Use Value: Absorbs 1500 W surges without degradation, maintaining >1000 h lifetime under telecom environmental stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15A-E3/52 | Bidirectional; 15 V nominal VWM; 24.4 V clamping at 62.3 A; DO-214AA package | Supports AC-coupled or bidirectional signal lines; not AEC-Q101 qualified | Select when bidirectional protection is required and automotive qualification is not mandatory |
| 1.5KE15A | Same 15 V VWM and 22.5 V clamping; higher 1.5 kW rating; DO-201AD package; no HE3 suffix or AEC-Q101 | Lacks automotive qualification and JESD201 whisker resistance; suited for industrial/commercial use only | Choose for cost-sensitive non-automotive designs where extended temperature operation is not required |
Compared with 1.5KA15HE3/51, SMBJ15A-E3/52 offers bidirectional capability but sacrifices automotive reliability, while 1.5KE15A matches electrical specs but omits AEC-Q101 validation and high-reliability plating - making 1.5KA15HE3/51 the sole choice for under-hood automotive deployments requiring full compliance.
Availability
1.5KA15HE3/51 is available at Aetrix Electronics and suitable for automotive ECU designs, industrial motor drive power supplies, and telecom power feeding circuits requiring stable component supply, long-lifecycle support, and AEC-Q101 traceability.
Supply support for 1.5KA15HE3/51 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 demanding industrial and automotive environments.
The 1.5KA series was engineered specifically for automotive transient suppression, combining AEC-Q101 qualification, high-temperature stability, and patented PAR® construction to meet stringent ISO 7637-2 and SAE J1113-11 requirements.
FAQ
What is the clamping voltage of the 1.5KA15HE3/51 under peak surge conditions?
The 1.5KA15HE3/51 clamps at 22.0 V when subjected to its rated peak pulse current of 68.2 A using the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures protected downstream circuitry remains within safe voltage limits during ISO 7637-2 Pulse 5a load dump events. The 1.5KA15HE3/51 maintains this clamping performance across its full operating temperature range.
Is the 1.5KA15HE3/51 qualified for automotive applications?
Yes, the 1.5KA15HE3/51 is explicitly AEC-Q101 qualified and designated as high-reliability/automotive grade per its HE3 suffix. It meets all stress test requirements including temperature cycling, humidity bias, and mechanical shock - validated for under-hood deployment in engine control units, body control modules, and ADAS sensor interfaces. The 1.5KA15HE3/51 data sheet confirms compliance in the Mechanical Data section.
What does the HE3 suffix indicate on the 1.5KA15HE3/51 part number?
The HE3 suffix on the 1.5KA15HE3/51 denotes RoHS-compliant, high-reliability construction meeting JESD201 Class 2 whisker resistance and J-STD-002 solderability standards. It also signifies qualification to AEC-Q101 and use of matte tin-plated leads compatible with lead-free reflow processes. This suffix distinguishes the 1.5KA15HE3/51 from commercial-grade variants like 1.5KA15A without automotive validation.
How does the 1.5KA15HE3/51 differ from the 1.5KA15A variant?
The 1.5KA15HE3/51 adds AEC-Q101 qualification, JESD201 Class 2 whisker resistance, and enhanced process controls versus the 1.5KA15A. Both share identical electrical specs (13.5–16.3 V VBR, 22.0 V VC), but only the 1.5KA15HE3/51 carries automotive traceability and extended reliability testing. The 1.5KA15HE3/51 is packaged in 13" paper tape and reel (base quantity 1400), while 1.5KA15A uses different packaging codes.
What is the maximum operating temperature for the 1.5KA15HE3/51?
The 1.5KA15HE3/51 has a maximum junction temperature (TJ) of +185 °C and an operating storage range of -65 °C to +185 °C. This rating enables direct use in high-temperature automotive locations such as near engines or transmission control units without external heatsinking. Derating curves in the datasheet show usable power capability maintained up to 175 °C ambient when lead temperature is controlled.
1.5KA15HE3/51 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):
- 12.1V
- Voltage - Breakdown (Min):
- 13.5V
- Voltage - Clamping (Max) @ Ipp:
- 22V
- Current - Peak Pulse (10/1000µs):
- 68.2A
- 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
1.5KA15HE3/51 FAQ
1.How can I place an order for 1.5KA15HE3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KA15HE3/51 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 1.5KA15HE3/51 reliable?
The price and inventory of 1.5KA15HE3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KA15HE3/51 is usually 5 days.
3.What payment methods are accepted for 1.5KA15HE3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KA15HE3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KA15HE3/51?
1.5KA15HE3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KA15HE3/51 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 1.5KA15HE3/51?
For technical support, including 1.5KA15HE3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KA15HE3/51 requirements.
6.How does Aetrix verify that 1.5KA15HE3/51 is sourced from the original manufacturer or authorized distributors?
All 1.5KA15HE3/51 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 1.5KA15HE3/51 meets industry standards.
7.What is the process for return or replacement of 1.5KA15HE3/51?
All 1.5KA15HE3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KA15HE3/51, 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 1.5KA15HE3/51 part is unused and in its original packaging.
Return procedure for 1.5KA15HE3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KA15HE3/51 Tags
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