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Vishay General Semiconductor - Diodes Division 1.5KA18A7000HE3/54
- Part No.:
- 1.5KA18A7000HE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KA18A7000HE3/54.pdf
- Description:
- TVS DIODE 15.3VWM 25.2VC 1.5KA
- Quantity:
- Payment:
- Shipping:
Inventory:8,377
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Product details
Overview
1.5KA18A7000HE3/54 from Vishay General Semiconductor is an automotive-grade unidirectional 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 25.2 V under 59.5 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 1.5KA18A7000HE3/54 datasheet, 1.5KA18A7000HE3/54 pinout, 1.5KA18A7000HE3/54 application, or 1.5KA18A7000HE3/54 equivalent, key selection criteria include its AEC-Q101 qualification, 17.1 V stand-off voltage, 0.088 %/°C VBR temperature coefficient, and HE3 suffix confirming JESD201 Class 2 whisker resistance and RoHS compliance.
Technical Context
This TVS diode employs Vishay's patented PAR® construction for stable clamping under repeated surge stress and exhibits low incremental surge resistance to minimize voltage overshoot during fast transients. Its unidirectional polarity enables integration into DC-biased circuits without reverse leakage concerns at 17.1 V stand-off.
Rated for 200 A non-repetitive forward surge (8.3 ms half-sine), it maintains reliable operation across -65 °C to +185 °C with 3.5 V max forward voltage at 100 A - supporting robust protection in high-temperature under-hood automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 µs) | 1500 W - sustains single high-energy surges per ISO 7637-2 Pulse 5a without degradation |
| Breakdown Voltage VBR | 17.1–18.9 V at 1 mA - ensures precise clamping onset above normal 12 V system operating range |
| Stand-off Voltage VWM | 17.1 V - blocks normal system voltage while remaining fully off until transient exceeds threshold |
| Clamping Voltage VC | 25.2 V at 59.5 A - limits downstream voltage to safe levels for 30 V-rated ICs and MOSFETs |
| Junction Temperature Range | -65 °C to +185 °C - validated for under-hood automotive placement per AEC-Q101 stress testing |
| Surge Current IPPM | 59.5 A (10/1000 µs) - matches typical load-dump and inductive-switching surge magnitudes |
| Temperature Coefficient of VBR | 0.088 %/°C - enables predictable clamping shift over temperature for accurate system margining |
Pinout & Package
Case Style 1.5KA: axial-leaded, molded epoxy package with matte tin-plated leads; cathode indicated by color band; UL 94 V-0 rated compound; lead length 9.5 mm (0.375"); compliant with J-STD-002 and JESD22-B102 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | DC return path / ground reference | Connected to system ground or low-side return; carries full surge current during clamping |
| Cathode | Protected line input / positive rail connection | Connected to line being protected (e.g., battery feed); voltage referenced to anode during clamping |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Enables consistent clamping performance across >1000 surge events without parameter drift |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive use including temperature cycling, humidity bias, and mechanical shock |
| JESD201 Class 2 whisker resistance | Prevents tin whisker growth under thermal stress, eliminating latent short-circuit risk in long-life modules |
| 1500 W peak pulse rating | Meets ISO 7637-2 Pulse 5a (load dump) requirements for 12 V systems without derating |
| Low clamping ratio (VC/VBR = 1.47) | Minimizes let-through energy to sensitive downstream components during surge events |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive Power Input |
|---|---|
Use Scenario: Protects microcontroller power supply and CAN transceiver inputs against load dump and alternator ripple in gasoline/diesel ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and local regulator input to clamp transients before LDO stage. Use Value: Withstands 185 °C ambient and clamps to 25.2 V, preserving 30 V-rated regulators and 5 V logic without derating. |
Use Scenario: Shields gate drivers and current-sense amplifiers from inductive kickback during IGBT switching in HVAC compressors. IC Role / Device Role / Timing Role: Mounted across DC bus input to absorb stored energy from motor windings during turn-off. Use Value: 1500 W rating handles repetitive 50–100 A surges; 0.088 %/°C VBR ensures stable clamping across -40 °C to +125 °C operating range. |
| Automotive Sensor Hub Interface | Telecom Power Supply Input |
Use Scenario: Safeguards LIN bus transceivers and analog front-end ICs in body control modules exposed to wiring harness ESD and relay bounce. IC Role / Device Role / Timing Role: Placed on each sensor line (e.g., temperature, pressure) before ESD protection diodes and signal conditioning. Use Value: 17.1 V stand-off avoids false triggering during 12 V nominal operation; 25.2 V clamping protects 24 V-tolerant receivers. |
Use Scenario: Guards AC/DC adapter outputs and PoE injectors against lightning-induced surges on telecom infrastructure equipment. IC Role / Device Role / Timing Role: Installed on secondary-side DC output to limit voltage excursion during primary-side MOV failure or grid transients. Use Value: 200 A IFSM rating supports coordination with upstream fuses; RoHS-compliant HE3 finish ensures reliability in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ18AHE3/52 | Lower peak pulse power (600 W), smaller SMB package (3.5 mm × 4.6 mm), same 17.1 V VWM | Suitable for space-constrained PCBs but requires parallel devices for 1500 W load-dump compliance | Select when board area is critical and surge energy is ≤600 W; verify thermal dissipation in confined layouts |
| 1.5KE18A-E3/54 | Same 1.5 kW rating and 17.1 V VWM, but standard industrial grade (not AEC-Q101), no HE3 whisker test | Lacks automotive qualification; not approved for safety-critical vehicle subsystems | Acceptable for industrial controls or consumer power supplies where AEC-Q101 is not mandated |
Compared with SMBJ18AHE3/52 and 1.5KE18A-E3/54, the 1.5KA18A7000HE3/54 uniquely combines AEC-Q101 qualification, JESD201 Class 2 whisker resistance, and axial-leaded 1.5KA package optimized for high-current lead-to-lead mounting - making it the only choice for production automotive power rail protection requiring zero field failures.
Availability
1.5KA18A7000HE3/54 is available at Aetrix Electronics and suitable for automotive engine control units, industrial motor drives, and telecom power supply inputs requiring stable component supply, long-term lifecycle support, and guaranteed AEC-Q101 conformance.
Supply support for 1.5KA18A7000HE3/54 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 designs and manufactures discrete semiconductors with emphasis on reliability, power handling, and automotive qualification - serving industrial, automotive, and computing markets since 1962.
The 1.5KA series was developed specifically for AEC-Q101-compliant transient suppression in harsh automotive environments, prioritizing high-temperature stability, surge endurance, and process-controlled whisker resistance.
FAQ
What is the maximum clamping voltage of the 1.5KA18A7000HE3/54 under specified surge conditions?
The 1.5KA18A7000HE3/54 has a maximum clamping voltage (VC) of 25.2 V at 59.5 A peak pulse current with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that downstream components see no more than 25.2 V during standardized surge events - critical for protecting 30 V-rated MOSFETs and regulators in automotive applications.
Is the 1.5KA18A7000HE3/54 qualified for automotive use, and what standards does it meet?
Yes, the 1.5KA18A7000HE3/54 is AEC-Q101 qualified for automotive applications, as confirmed by its HE3 suffix and documentation in Vishay's 88300 datasheet. It meets RoHS 2002/95/EC and WEEE 2002/96/EC directives, passes JESD201 Class 2 whisker testing, and is rated for operation from -65 °C to +185 °C - fulfilling requirements for under-hood ECU and sensor module deployment.
What does the "HE3/54" suffix indicate in the 1.5KA18A7000HE3/54 part number?
The "HE3" suffix in 1.5KA18A7000HE3/54 denotes RoHS-compliant, high-reliability automotive grade with JESD201 Class 2 whisker resistance; "54" specifies the preferred package code - 13-inch paper tape and reel with 1400 units per reel. This packaging format ensures automated assembly compatibility and traceable lot control for high-volume automotive production.
How does the temperature coefficient of VBR affect system design for the 1.5KA18A7000HE3/54?
The 1.5KA18A7000HE3/54 has a VBR temperature coefficient of 0.088 %/°C, meaning breakdown voltage increases predictably with junction temperature. At +125 °C, VBR rises ~8.8% - from 17.1–18.9 V to approximately 18.6–20.6 V. Designers must account for this shift when setting safety margins for downstream 24 V-tolerant ICs to avoid unintended clamping during hot operation.
Can the 1.5KA18A7000HE3/54 replace the 1.5KE18A in an existing design?
The 1.5KA18A7000HE3/54 is not a direct drop-in replacement for the 1.5KE18A due to differences in qualification and construction: it is AEC-Q101 qualified, uses PAR® technology, and features HE3 whisker-resistant plating, whereas the 1.5KE18A is industrial-grade only. Electrical parameters match closely, but automotive designs require validation of thermal layout and mechanical mounting per Case Style 1.5KA dimensions.
1.5KA18A7000HE3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 15.3V
- Voltage - Breakdown (Min):
- 17.1V
- Voltage - Clamping (Max) @ Ipp:
- 25.2V
- Current - Peak Pulse (10/1000µs):
- 59.5A
- 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
1.5KA18A7000HE3/54 FAQ
1.How can I place an order for 1.5KA18A7000HE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KA18A7000HE3/54 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 1.5KA18A7000HE3/54 reliable?
The price and inventory of 1.5KA18A7000HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KA18A7000HE3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KA18A7000HE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KA18A7000HE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
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1.5KA18A7000HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KA18A7000HE3/54 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 1.5KA18A7000HE3/54?
For technical support, including 1.5KA18A7000HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KA18A7000HE3/54 requirements.
6.How does Aetrix verify that 1.5KA18A7000HE3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KA18A7000HE3/54 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 1.5KA18A7000HE3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KA18A7000HE3/54?
All 1.5KA18A7000HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KA18A7000HE3/54, 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 1.5KA18A7000HE3/54 part is unused and in its original packaging.
Return procedure for 1.5KA18A7000HE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KA18A7000HE3/54 Tags
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Diodes Incorporated
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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