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Vishay General Semiconductor - Diodes Division 1.5KE16HE3/73
- Part No.:
- 1.5KE16HE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE16HE3/73.pdf
- Description:
- TVS DIODE 12.9VWM 23.5VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:5,984
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Product details
Overview
1.5KE16HE3/73 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection in DC power rails and signal lines. It features a 16 V breakdown voltage (VBR = 15.2–16.8 V at IT = 1.0 mA), 13.6 V maximum working voltage (VWM), 22.5 V clamping voltage (VC) at 66.7 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - used to safeguard MOSFETs, ICs, and sensor interfaces in industrial power supplies and automotive ECUs.
For engineers reviewing the 1.5KE16HE3/73 datasheet, 1.5KE16HE3/73 pinout, 1.5KE16HE3/73 application, or 1.5KE16HE3/73 equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), JEDEC 1.5KE package dimensions, and real-world clamping behavior under surge conditions - all critical for ESD/lightning transient design validation.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR, it avalanches into low-impedance conduction to divert surge current away from downstream circuitry. Its glass-passivated junction ensures stable breakdown and low leakage (<1.0 µA at VWM), while the 10/1000 µs waveform rating reflects standardized lightning-surge immunity testing per IEC 61000-4-5.
Thermal performance is defined by RθJL = 15.4 °C/W (junction-to-lead) and derating above TA = 25 °C per Fig. 2; maximum junction temperature is 175 °C. The device is rated for 200 A non-repetitive forward surge (8.3 ms half-sine) and exhibits VF = 3.5 V at 100 A - confirming suitability for high-energy transient suppression without forward conduction degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 15.2 V / 16.8 V at 1.0 mA test current - defines precise avalanche onset threshold for reliable overvoltage triggering |
| VWM | 13.6 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 22.5 V at 66.7 A - clamped voltage during 1500 W surge, limiting stress on protected ICs |
| PPPM | 1500 W - peak pulse power handling per 10/1000 µs waveform, aligned with IEC 61000-4-5 Level 4 |
| RθJA | 75 °C/W - thermal resistance from junction to ambient, requiring heatsinking for sustained surge duty |
| TJ max | +175 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: JEDEC Case Style 1.5KE - molded epoxy body with matte tin-plated leads, UL 94 V-0 rated, lead length 0.375" (9.5 mm). Dimensions: 5.6 mm × 5.2 mm × 9.5 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line; enables unidirectional clamping only during reverse overvoltage |
| Cathode | Avalanche conduction terminal | Marked with color band; connected to higher-potential rail (e.g., VCC) to shunt transients to ground |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR tolerance (±5 %) and <1.0 µA leakage at VWM across -55 °C to +175 °C |
| 1500 W peak pulse power | Supports single-event lightning surges up to 10/1000 µs without failure, per IEC 61000-4-5 |
| AEC-Q101 qualification | Validated for automotive applications including engine control units and body electronics |
| Low incremental surge resistance | Enables rapid clamping response (<1 ns) and minimal overshoot during fast transients |
| RoHS-compliant HE3 suffix | Meets JESD 201 Class 2 whisker resistance and J-STD-002 solderability standards |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting 12 V battery-fed microcontrollers and CAN transceivers from load-dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional shunt clamp placed between VBAT and ground, triggered within 1 ns upon exceeding 13.6 V. Use Value: Limits voltage to ≤22.5 V during 66.7 A surge, preventing latch-up or gate oxide damage in downstream ICs. | Use Scenario: Safeguarding analog front-ends of pressure/temperature sensors in PLC I/O modules exposed to inductive switching noise. IC Role / Device Role / Timing Role: Reverse-biased TVS on sensor supply line, clamping EFT bursts (IEC 61000-4-4) before reaching ADC input. Use Value: Maintains signal integrity by suppressing >1 kV transients while adding <0.5 pF capacitance - no bandwidth degradation. |
| DC-DC Converter Input Stage | Telecom Line Card Surge Protection |
Use Scenario: Input protection for 24 V input buck converters in factory automation drives. IC Role / Device Role / Timing Role: Primary overvoltage clamp upstream of input filter capacitor, absorbing energy from field-wiring faults. Use Value: Handles 1500 W pulses without thermal runaway, enabling single-device protection instead of multi-stage designs. | Use Scenario: Secondary-level surge protection on Ethernet PHY power rails in network switches. IC Role / Device Role / Timing Role: Standoff-rated TVS (13.6 V) placed after primary gas discharge tube, providing fine clamping for residual transients. Use Value: Reduces let-through voltage to <22.5 V, ensuring PHY ICs survive combined lightning + ESD events per GR-1089-CORE. |
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 | Lower PPPM (600 W), smaller SMB package (3.5 mm × 3.5 mm), VC = 26.0 V @ 24.3 A | Targeted at space-constrained PCBs with lower surge exposure (IEC 61000-4-2/4-4 only) | Select SMBJ16A only if board area is critical and surge energy does not exceed 600 W; 1.5KE16HE3/73 remains preferred for full IEC 61000-4-5 compliance. |
| 1.5KE16A-E3/54 | Same electrical specs and 1.5KE package, but commercial-grade (non-AEC-Q101), RoHS-compliant E3 suffix only | Acceptable for consumer or industrial equipment where automotive qualification is unnecessary | Choose 1.5KE16A-E3/54 for cost-sensitive non-automotive designs; 1.5KE16HE3/73 adds AEC-Q101 validation and enhanced whisker resistance (Class 2). |
Compared with SMBJ16A and 1.5KE16A-E3/54, the 1.5KE16HE3/73 uniquely combines 1500 W surge capability, AEC-Q101 qualification, and Class 2 whisker resistance - making it the only option qualified for under-hood automotive use with full lightning-surge immunity.
Availability
1.5KE16HE3/73 is available at Aetrix Electronics and suitable for automotive ECU designs, industrial PLC I/O modules, telecom line cards, and DC-DC converter input stages requiring stable component supply and long-term lifecycle support.
Supply support for 1.5KE16HE3/73 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, and protection devices with emphasis on reliability and application-specific performance.
The 1.5KE family was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where robustness against lightning, EFT, and load dump is mandatory.
FAQ
What is the clamping voltage of the 1.5KE16HE3/73 and how is it measured?
The 1.5KE16HE3/73 has a maximum clamping voltage (VC) of 22.5 V, measured at its peak pulse current (IPPM) of 66.7 A using a standardized 10/1000 µs double-exponential surge waveform. This value represents the upper limit of voltage seen by protected circuitry during a worst-case transient event and is guaranteed per the Vishay datasheet revision 09-Aug-2022. The 1.5KE16HE3/73 achieves this clamping performance due to its low incremental surge resistance and optimized junction design.
Is the 1.5KE16HE3/73 qualified for automotive applications?
Yes, the 1.5KE16HE3/73 is AEC-Q101 qualified per note (2) in the Vishay datasheet, covering devices from 1.5KE6.8AHE3_B to 1.5KE220AHE3_B. This qualification includes stress tests such as temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge (ESD), confirming suitability for automotive powertrain and body electronics. The 1.5KE16HE3/73 is explicitly listed in the qualified part range and carries the HE3 suffix denoting AEC-Q101 compliance.
How does the 1.5KE16HE3/73 differ from the standard 1.5KE16A-E3/54?
The 1.5KE16HE3/73 differs from 1.5KE16A-E3/54 in three key ways: it is AEC-Q101 qualified (vs. commercial grade), uses the HE3 suffix indicating JESD 201 Class 2 whisker resistance (vs. Class 1A for E3), and is supplied in tape-and-reel packaging with code "73" (vs. "54"). Electrically and dimensionally identical, the 1.5KE16HE3/73 is the automotive-qualified variant - meaning the 1.5KE16HE3/73 meets stricter reliability requirements for under-hood deployment where the 1.5KE16A-E3/54 does not.
What is the maximum operating temperature for the 1.5KE16HE3/73?
The 1.5KE16HE3/73 has a maximum junction temperature (TJ) of +175 °C and an operating junction/storage temperature range of -55 °C to +175 °C. This rating is confirmed in the "Maximum Ratings" table of the Vishay datasheet (Document Number: 88301). The high TJ enables use in under-hood automotive environments and industrial enclosures without forced cooling, provided thermal design accounts for RθJA = 75 °C/W and appropriate PCB copper area or heatsinking.
Can the 1.5KE16HE3/73 be used in bidirectional configurations?
No, the 1.5KE16HE3/73 is a unidirectional TVS diode, as indicated by the "A" suffix (e.g., 1.5KE16A) and absence of "CA" in its part number. Bidirectional variants in the same family use the "CA" suffix (e.g., 1.5KE16CA) and are only available up to 1.5KE220CA per the datasheet notes. Using the 1.5KE16HE3/73 in bidirectional circuits would result in forward conduction during negative transients - potentially damaging the device or failing to protect. For bidirectional protection, select 1.5KE16CAHE3/73 instead.
1.5KE16HE3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- 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:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE16HE3/73 FAQ
1.How can I place an order for 1.5KE16HE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE16HE3/73 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 1.5KE16HE3/73 reliable?
The price and inventory of 1.5KE16HE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE16HE3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KE16HE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE16HE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE16HE3/73?
1.5KE16HE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE16HE3/73 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 1.5KE16HE3/73?
For technical support, including 1.5KE16HE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE16HE3/73 requirements.
6.How does Aetrix verify that 1.5KE16HE3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE16HE3/73 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 1.5KE16HE3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE16HE3/73?
All 1.5KE16HE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE16HE3/73, 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 1.5KE16HE3/73 part is unused and in its original packaging.
Return procedure for 1.5KE16HE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE16HE3/73 Tags
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