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Vishay General Semiconductor - Diodes Division 1.5KE16AHE3/51
- Part No.:
- 1.5KE16AHE3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE16AHE3/51.pdf
- Description:
- TVS DIODE 13.6VWM 22.5VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:3,007
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Product details
Overview
1.5KE16AHE3/51 from Vishay General Semiconductor is a uni-directional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection in DC power rails and signal lines. It features a 15.2 V minimum breakdown voltage (VBR), 13.6 V maximum stand-off voltage (VWM), 22.5 V clamping voltage (VC) at 66.7 A peak pulse current, 1500 W peak pulse power rating (10/1000 µs), and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the 1.5KE16AHE3/51 datasheet, 1.5KE16AHE3/51 pinout, 1.5KE16AHE3/51 application, or 1.5KE16AHE3/51 equivalent, this device is selected for robust ESD and surge protection in automotive body control modules, industrial PLC I/O circuits, and telecom power supply front-ends where fast clamping (<1 ns), low leakage (<1 µA at VWM), and high surge current handling are critical.
Technical Context
The 1.5KE16AHE3/51 operates as a uni-directional avalanche diode with glass-passivated junction construction, enabling stable breakdown behavior under repetitive transient stress. Its 10/1000 µs waveform response delivers 66.7 A peak pulse current while maintaining 22.5 V clamping - critical for protecting downstream MOSFETs and ICs rated for ≤24 V operation.
Thermally, it exhibits 15.4 °C/W junction-to-lead thermal resistance and supports continuous power dissipation of 6.5 W on an infinite heatsink at 75 °C lead temperature. The device is RoHS-compliant, matte tin-plated, and qualified to JESD 201 Class 2 whisker test standards via the HE3 suffix.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 15.2 V / 16.8 V - defines guaranteed avalanche conduction onset range under 1 mA test current |
| VWM | 13.6 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | 22.5 V at 66.7 A - clamped voltage during 1500 W transient, limiting stress on protected circuitry |
| PPPM | 1500 W - peak pulse power handling capability per 10/1000 µs waveform, defining surge robustness |
| IFSM | 200 A - non-repetitive forward surge current rating (8.3 ms half-sine), supporting inrush tolerance |
| TJ max. | +175 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| Leakage @ VWM | <1 µA - ensures minimal standby power loss and signal integrity in high-impedance circuits |
Pinout & Package
Package: Case Style 1.5KE - axial-leaded DO-201AD molded epoxy package with matte tin-plated leads, UL 94 V-0 rated, 0.375" (9.5 mm) lead length standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / cathode-referenced clamp node | Connected to ground or low-side reference; enables uni-directional clamping from VWM to VC when cathode is biased positive |
| Cathode | Reverse-biased terminal / clamping output | Connected to protected line (e.g., 12 V rail); conducts avalanche current to anode during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable, repeatable breakdown voltage and long-term reliability under thermal cycling |
| 1500 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity without external series impedance |
| AEC-Q101 qualified | Validated for automotive applications including engine control units and infotainment power supplies |
| Low incremental surge resistance | Minimizes VC overshoot during fast transients, improving protection margin for 24 V logic interfaces |
| JESD 201 Class 2 whisker resistance | Prevents tin whisker growth in high-reliability industrial and automotive assemblies over 15+ year lifetimes |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input |
|---|---|
Use Scenario: Protecting microcontroller GPIO and CAN transceiver power pins from load dump and inductive switching spikes in 12 V vehicle networks. IC Role / Device Role / Timing Role: Uni-directional TVS placed between 12 V supply rail and chassis ground to clamp transients above 13.6 V. Use Value: Limits clamped voltage to 22.5 V during 66.7 A surges, preventing damage to 24 V-tolerant MCUs and ensuring ASIL-B system integrity. | Use Scenario: Safeguarding 24 V digital input channels against field-wiring induced surges and electrostatic discharge in factory automation systems. IC Role / Device Role / Timing Role: Primary overvoltage clamp on the input side of optocoupler isolation stages. Use Value: Fast <1 ns response and 1500 W rating enable compliance with IEC 61000-4-4 (EFT) and IEC 61000-4-5 (surge) without derating. |
| Telecom Power Supply Front-End | Consumer Appliance Motor Drive |
Use Scenario: Secondary surge protection on +48 V DC distribution lines feeding base station RF modules and backhaul interfaces. IC Role / Device Role / Timing Role: Standoff-rated TVS in parallel with bulk capacitance to absorb line-induced lightning surges. Use Value: 13.6 V VWM allows use on 48 V systems with appropriate series impedance; 22.5 V VC prevents latch-up in downstream DC/DC controllers. | Use Scenario: Overvoltage suppression on brushed DC motor H-bridge supply rails exposed to commutation spikes in white goods. IC Role / Device Role / Timing Role: Uni-directional clamp referenced to ground, absorbing inductive kickback during MOSFET turn-off. Use Value: 200 A IFSM rating withstands repeated motor stall currents; AEC-Q101 qualification ensures lifetime reliability in high-vibration environments. |
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 | DO-214AA package (SMB), lower PPPM = 600 W, same VBR range (15.2–16.8 V), higher VC = 26.0 V | Suitable for space-constrained PCBs but requires layout review for thermal derating due to smaller case | Select when board area is limited and peak surge energy is ≤600 W; verify thermal performance under 10/1000 µs pulses. |
| 1.5KE16CA | Bi-directional variant (CA suffix), identical VBR/VC specs, same 1500 W rating, no polarity marking | Required for AC-coupled or bidirectional signal lines (e.g., RS-485, USB D+/D−) where reverse polarity transients occur | Choose only when protecting symmetric differential or AC signals; not interchangeable with 1.5KE16AHE3/51 in DC rail applications. |
Compared with SMBJ16A and 1.5KE16CA, the 1.5KE16AHE3/51 offers superior surge energy handling (1500 W vs. 600 W) and lower clamping voltage (22.5 V vs. 26.0 V) in a through-hole package optimized for high-power dissipation and mechanical robustness - making it preferred for industrial and automotive power rail protection where thermal mass and reliability outweigh footprint constraints.
Availability
1.5KE16AHE3/51 is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and telecom infrastructure requiring stable component supply, AEC-Q101 qualification, and high-energy transient suppression.
Supply support for 1.5KE16AHE3/51 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 diodes, rectifiers, TVS devices, and power MOSFETs with emphasis on reliability, efficiency, and application-specific optimization.
The 1.5KE series was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where failure due to voltage surges must be eliminated through proven 1500 W pulse capability and AEC-Q101 validation.
FAQ
What is the clamping voltage of the 1.5KE16AHE3/51 under maximum rated surge current?
The 1.5KE16AHE3/51 has a maximum clamping voltage (VC) of 22.5 V when subjected to its rated peak pulse current of 66.7 A using the standardized 10/1000 µs waveform. This value is measured per JEDEC test conditions and guarantees that protected circuitry downstream will not experience voltages exceeding 22.5 V during such transient events - a critical parameter for ensuring compatibility with 24 V logic and power ICs. The 1.5KE16AHE3/51 maintains this clamping performance across its full operating temperature range.
Is the 1.5KE16AHE3/51 suitable for automotive applications?
Yes, the 1.5KE16AHE3/51 is explicitly AEC-Q101 qualified, as confirmed in Vishay's datasheet revision 11-Oct-16 (Document Number: 88301). This qualification covers stress testing for temperature cycling, humidity, mechanical shock, and surge endurance - validating its use in automotive body control modules, infotainment power supplies, and lighting drivers. The 1.5KE16AHE3/51 also meets JESD 201 Class 2 whisker resistance and RoHS compliance requirements mandated for modern vehicle platforms.
How does the HE3 suffix affect the 1.5KE16AHE3/51 specification?
The HE3 suffix on the 1.5KE16AHE3/51 indicates RoHS compliance plus AEC-Q101 qualification and JESD 201 Class 2 whisker resistance - distinguishing it from commercial-grade E3 variants. Per Vishay documentation, HE3 parts undergo additional reliability screening and are approved for automotive and high-reliability industrial use. The "51" denotes tape-and-reel packaging (13" diameter, 1400 units per reel), while electrical and thermal specifications remain identical to other 1.5KE16A variants within the same family.
What is the maximum operating temperature for the 1.5KE16AHE3/51?
The 1.5KE16AHE3/51 has a maximum junction temperature (TJ) rating of +175 °C, allowing reliable operation in under-hood automotive environments and high-temperature industrial enclosures. Its thermal resistance from junction to lead (RθJL) is 15.4 °C/W, meaning a 10 W power dissipation would raise the junction temperature by 154 °C above lead temperature - underscoring the need for proper lead heat sinking in high-duty-cycle applications. The 1.5KE16AHE3/51 remains fully functional across the full -55 °C to +175 °C range.
Can the 1.5KE16AHE3/51 be used in bi-directional signal protection?
No, the 1.5KE16AHE3/51 is a uni-directional TVS diode, identifiable by its cathode band marking and specified VBR/VWM parameters for reverse-bias operation only. For bi-directional protection - such as on RS-485, CAN, or AC-coupled analog lines - the bi-directional variant 1.5KE16CA must be used instead. Using the 1.5KE16AHE3/51 in bi-directional configurations risks forward conduction and failure during negative transients, as it lacks symmetrical breakdown characteristics. Always match device polarity to circuit topology.
1.5KE16AHE3/51 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 13.6V
- Voltage - Breakdown (Min):
- 15.2V
- Voltage - Clamping (Max) @ Ipp:
- 22.5V
- Current - Peak Pulse (10/1000µs):
- 66.7A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE16AHE3/51 FAQ
1.How can I place an order for 1.5KE16AHE3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE16AHE3/51 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 1.5KE16AHE3/51 reliable?
The price and inventory of 1.5KE16AHE3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE16AHE3/51 is usually 5 days.
3.What payment methods are accepted for 1.5KE16AHE3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE16AHE3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE16AHE3/51?
1.5KE16AHE3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE16AHE3/51 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 1.5KE16AHE3/51?
For technical support, including 1.5KE16AHE3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE16AHE3/51 requirements.
6.How does Aetrix verify that 1.5KE16AHE3/51 is sourced from the original manufacturer or authorized distributors?
All 1.5KE16AHE3/51 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 1.5KE16AHE3/51 meets industry standards.
7.What is the process for return or replacement of 1.5KE16AHE3/51?
All 1.5KE16AHE3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE16AHE3/51, 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 1.5KE16AHE3/51 part is unused and in its original packaging.
Return procedure for 1.5KE16AHE3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE16AHE3/51 Tags
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