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Vishay General Semiconductor - Diodes Division 1.5KA16HE3/54
- Part No.:
- 1.5KA16HE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KA16HE3/54.pdf
- Description:
- TVS DIODE 12.9VWM 23.5VC 1.5KA
- Quantity:
- Payment:
- Shipping:
Inventory:3,587
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Product details
Overview
1.5KA16HE3/54 from Vishay General Semiconductor is a unidirectional automotive-grade transient voltage suppressor (TVS) diode designed for high-energy surge protection in harsh environments. It delivers 1500 W peak pulse power (10/1000 µs), clamps at 23.5 V under 63.8 A peak pulse current, 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 1.5KA16HE3/54 datasheet, 1.5KA16HE3/54 pinout, 1.5KA16HE3/54 application, or 1.5KA16HE3/54 equivalent, key selection criteria include its 14.4–17.6 V breakdown range, 12.9 V standoff voltage, 1.0 µA leakage at VWM, RoHS-compliant HE3 packaging, and validated performance under high-temperature transients per ISO 7637-2.
Technical Context
This TVS diode employs Vishay's patented PAR® construction for stable clamping under repetitive surge stress and exhibits low incremental surge resistance for consistent voltage limiting during fast transients. Its unidirectional polarity and 10/1000 µs waveform response align with ISO 7637-2 Pulse 1, 2a, and 5a test profiles.
The device features a molded epoxy case rated UL 94 V-0, matte tin-plated leads compliant with J-STD-002 and JESD22-B102, and passes JESD201 Class 2 whisker testing - all confirming suitability for automotive under-hood applications requiring long-term reliability at elevated temperatures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 µs) | 1500 W - sustains automotive load-dump surges without degradation |
| Breakdown Voltage (VBR) | 14.4–17.6 V at 1.0 mA - defines precise overvoltage triggering threshold |
| Standoff Voltage (VWM) | 12.9 V - ensures no conduction during normal 12 V system operation |
| Clamping Voltage (VC) | 23.5 V at 63.8 A - limits downstream IC voltage to safe level during surge |
| Operating Temperature | -65 °C to +185 °C - supports under-hood placement near engines or inverters |
| AEC-Q101 Qualified | Yes - certified for automotive electronic systems per stress test requirements |
| RoHS & WEEE Compliant | Yes - HE3 suffix denotes high-reliability, lead-free, whisker-resistant finish |
Pinout & Package
Package: Case Style 1.5KA - axial-leaded, molded epoxy body with cathode band marking; dimensions: 1.0" (25.4 mm) min length × 0.210" (5.3 mm) max diameter; UL 94 V-0 rated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to ground or low-side reference in unidirectional clamp configuration |
| Cathode | Current exit point; marked by color band | Connected to protected line (e.g., sensor supply or gate drive) - clamps to anode when VAK > VBR |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Enables stable VBR and low dynamic impedance across 1000+ surge cycles |
| 1500 W peak pulse rating (10/1000 µs) | Meets ISO 7637-2 Pulse 5a (load dump) energy requirements for 12 V systems |
| Low clamping ratio (VC/VBR ≈ 1.5) | Minimizes overvoltage stress on protected MOSFET gates and IC inputs |
| JESD201 Class 2 whisker resistance | Prevents tin whisker growth in high-humidity, high-temperature automotive environments |
| Solder dip 260 °C / 40 s | Supports standard reflow and wave soldering without parameter shift or delamination |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive Gate Protection |
|---|---|
Use Scenario: Protects microcontroller I/O and injector driver outputs from inductive kickback during solenoid switching in 12 V engine management systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between MCU output pin and ground to clamp negative transients below -0.7 V and positive surges above VBR. Use Value: Prevents latch-up and gate oxide damage in 3.3 V/5 V logic interfaces exposed to ISO 7637-2 Pulse 2a (inductive switch-off). |
Use Scenario: Shields IGBT gate drivers from Miller-induced voltage spikes during high-di/dt switching in HVAC compressors and pumps. IC Role / Device Role / Timing Role: Clamps gate-source voltage to ≤23.5 V during turn-off transients, maintaining safe VGS margin below 30 V absolute maximum. Use Value: Eliminates need for external Zener + resistor networks while sustaining 185 °C junction temperature during continuous thermal cycling. |
| Automotive ADAS Camera Power Line | Telecom DC Power Input Stage |
Use Scenario: Guards 12 V input of rear-view camera module against load dump and jump-start surges in vehicle infotainment harnesses. IC Role / Device Role / Timing Role: Primary front-end clamp ahead of DC/DC converter, absorbing >90 % of 1500 W surge energy before downstream regulation. Use Value: Enables single-stage protection architecture with <1 µs response time, reducing BOM count versus multi-stage TVS + MOV solutions. |
Use Scenario: Protects PoE-powered network switches from lightning-induced surges on 48 V DC input rails. IC Role / Device Role / Timing Role: Standoff-rated TVS placed across input terminals to shunt common-mode transients exceeding 12.9 V. Use Value: Maintains 1.0 µA leakage at 12.9 V, minimizing standby power loss while meeting IEC 61000-4-5 Level 4 immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ16A-E3/52 | Lower PPPM (600 W), smaller SMB package, bidirectional option available | Limited to lower-energy transients (e.g., ESD, data-line surges); not AEC-Q101 qualified | Select when space-constrained PCB layout prioritizes footprint over automotive qualification and 1500 W capability |
| 1.5KE16A | Same VBR range but legacy DO-201 package, non-automotive grade, no HE3 whisker rating | Approved only for industrial/commercial use; lacks AEC-Q101 validation and high-temp derating curves | Choose only for cost-sensitive non-automotive designs where 185 °C operation and JESD201 compliance are unnecessary |
Compared with SMBJ16A-E3/52 and 1.5KE16A, the 1.5KA16HE3/54 uniquely combines AEC-Q101 qualification, 1500 W pulse handling, 185 °C operation, and JESD201 Class 2 whisker resistance - making it the sole option for under-hood automotive TVS applications demanding full ISO 7637-2 compliance and long-term thermal reliability.
Availability
1.5KA16HE3/54 is available at Aetrix Electronics and suitable for automotive ECU protection, industrial motor drive gate circuits, ADAS camera power inputs, and telecom DC power stages requiring stable component supply across extended temperature and surge stress conditions.
Supply support for 1.5KA16HE3/54 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 is a global leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The 1.5KA series was engineered specifically for automotive transient suppression, emphasizing AEC-Q101 qualification, high-temperature stability, and robust PAR® junction design to replace older 1.5KE parts in next-generation vehicle electronics.
FAQ
What is the breakdown voltage range of the 1.5KA16HE3/54?
The 1.5KA16HE3/54 has a guaranteed breakdown voltage (VBR) range of 14.4 V to 17.6 V at 1.0 mA test current, measured per ANSI/IEEE C62.35 standards. This range ensures reliable triggering during overvoltage events while maintaining sufficient margin above nominal 12 V system voltage. The 1.5KA16HE3/54 achieves this specification using Vishay's patented PAR® construction for tight parametric control and thermal stability.
Is the 1.5KA16HE3/54 suitable for automotive under-hood applications?
Yes, the 1.5KA16HE3/54 is AEC-Q101 qualified and rated for operation from -65 °C to +185 °C junction temperature, making it fully suitable for under-hood automotive applications such as engine control units and transmission control modules. Its HE3 suffix confirms compliance with JESD201 Class 2 whisker testing and RoHS directives - critical for long-term reliability in high-humidity, high-temperature environments where the 1.5KA16HE3/54 is deployed.
What is the clamping voltage of the 1.5KA16HE3/54 at its rated peak pulse current?
The 1.5KA16HE3/54 clamps to a maximum of 23.5 V at its rated peak pulse current of 63.8 A (10/1000 µs waveform). This clamping voltage is measured under standardized surge conditions and reflects the device's ability to limit transient energy delivered to downstream circuitry. The low VC/VBR ratio (~1.5) of the 1.5KA16HE3/54 ensures effective protection of sensitive 24 V-tolerant ICs and MOSFETs without excessive voltage overshoot.
Does the 1.5KA16HE3/54 have unidirectional or bidirectional polarity?
The 1.5KA16HE3/54 is available in uni-directional polarity only, with the cathode identified by a color band on the molded epoxy body. This configuration enables efficient clamping of positive transients relative to ground while blocking reverse conduction - ideal for protecting DC power rails and signal lines referenced to system ground. Bidirectional variants are not offered in the 1.5KA16HE3/54 family.
What packaging format is used for the 1.5KA16HE3/54?
The 1.5KA16HE3/54 is supplied in 13" diameter paper tape and reel packaging (package code 54), with a base quantity of 1400 units per reel. The HE3 suffix indicates RoHS-compliant, high-reliability construction featuring matte tin-plated leads that meet J-STD-002 and JESD22-B102 solderability standards - ensuring robust assembly yield in automated SMT and through-hole processes for the 1.5KA16HE3/54.
1.5KA16HE3/54 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):
- 12.9V
- Voltage - Breakdown (Min):
- 14.4V
- Voltage - Clamping (Max) @ Ipp:
- 23.5V
- Current - Peak Pulse (10/1000µs):
- 63.8A
- 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
1.5KA16HE3/54 FAQ
1.How can I place an order for 1.5KA16HE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KA16HE3/54 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 1.5KA16HE3/54 reliable?
The price and inventory of 1.5KA16HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KA16HE3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KA16HE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KA16HE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KA16HE3/54?
1.5KA16HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KA16HE3/54 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 1.5KA16HE3/54?
For technical support, including 1.5KA16HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KA16HE3/54 requirements.
6.How does Aetrix verify that 1.5KA16HE3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KA16HE3/54 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 1.5KA16HE3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KA16HE3/54?
All 1.5KA16HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KA16HE3/54, 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 1.5KA16HE3/54 part is unused and in its original packaging.
Return procedure for 1.5KA16HE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KA16HE3/54 Tags
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