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Vishay General Semiconductor - Diodes Division SA16HE3/73
- Part No.:
- SA16HE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA16HE3/73.pdf
- Description:
- TVS DIODE 16VWM 28.8VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,066
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Product details
Overview
SA16HE3/73 from Vishay General Semiconductor is a uni-directional TransZORB® transient voltage suppressor (TVS) diode in DO-204AC (DO-15) package, designed for primary overvoltage protection of DC power rails and signal lines. It features a 16 V stand-off voltage (VWM), 17.8–19.7 V breakdown voltage (VBR) at 1.0 mA, 500 W peak pulse power (10/1000 µs), clamping voltage of 26.0 V at 19.2 A, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SA16HE3/73 datasheet, SA16HE3/73 pinout, SA16HE3/73 application, or SA16HE3/73 equivalent, this part serves as a robust, RoHS-compliant, high-surge-capability TVS for protecting sensitive MOSFETs, microcontrollers, and sensor interfaces against inductive switching transients and ESD in automotive and industrial control systems.
Technical Context
This uni-directional TVS operates with a glass-passivated junction and exhibits low incremental surge resistance, enabling fast response (<1 ps) to transient events while maintaining stable clamping performance across temperature. Its 175 °C maximum junction temperature and 70 A IFSM rating support high-reliability operation under repetitive surge conditions.
The device complies with AEC-Q101 stress testing requirements and uses matte tin-plated leads qualified per J-STD-002 and JESD 22-B102. The HE3 suffix denotes AEC-Q101 qualification and JESD 201 Class 2 whisker resistance - critical for automotive under-hood and body electronics applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 12 V automotive systems. |
| VBR (min/max) | 17.8 V / 19.7 V at 1.0 mA - Confirmed breakdown range ensures consistent turn-on behavior across production lots and temperature. |
| VC @ IPPM | 26.0 V at 19.2 A - Clamping voltage limits downstream IC stress during 500 W transient events; enables robust protection of 24 V logic interfaces. |
| PPPM | 500 W (10/1000 µs waveform) - Sustains high-energy surges common in motor drive and relay coil suppression without degradation. |
| IFSM | 70 A (8.3 ms half-sine) - Withstands repeated inrush and fault currents in power supply input stages and battery-connected circuits. |
| TJ max | 175 °C - Supports operation in high-ambient environments such as engine control units and power distribution modules. |
| Package | DO-204AC (DO-15) - Industry-standard axial leaded package with UL 94 V-0 molded epoxy; compatible with automated through-hole assembly. |
Pinout & Package
DO-204AC (DO-15) package with axial leads; cathode denoted by color band on one end. Matte tin-plated leads meet J-STD-002 solderability and JESD 22-B102 thermal shock requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to ground or low-impedance return node; forms clamping loop with cathode during positive transients. |
| Cathode | Protected line connection / transient sink | Connected to the line being protected (e.g., 12 V rail); conducts surge current to anode when VAK exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enables stable leakage performance (<1.0 µA at VWM) and long-term reliability under thermal cycling and humidity stress. |
| AEC-Q101 qualification (HE3 suffix) | Validated for automotive applications including engine management, body control modules, and ADAS sensor interfaces. |
| 500 W peak pulse power (10/1000 µs) | Provides immunity to ISO 7637-2 Pulse 1, 2a, 3a/b, and IEC 61000-4-5 Level 3 surges without derating. |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes voltage overshoot during clamping - critical for safeguarding 20 V absolute maximum-rated ICs like CAN transceivers. |
| JESD 201 Class 2 whisker resistance | Prevents tin whisker growth under high-temperature/humidity bias, eliminating latent field failures in sealed automotive enclosures. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Primary shunt clamping device placed at power entry point before LDOs and microcontrollers. Use Value: Limits transient excursions to ≤26.0 V, preventing latch-up or gate oxide damage in downstream 3.3 V/5 V logic powered from buck converters. |
Use Scenario: Safeguarding analog outputs and digital I/O of pressure/temperature sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Line-side TVS on 4–20 mA current loop or RS-485 bus termination points. Use Value: Absorbs induced surges from nearby motor contactors without affecting 0.1% measurement accuracy or communication integrity. |
| Motor Drive Gate Driver Protection | Consumer Appliance Control Board |
Use Scenario: Shielding high-side N-channel MOSFET gate drivers from Miller-induced voltage spikes during PWM switching. IC Role / Device Role / Timing Role: Clamp placed between gate and source to suppress dv/dt-induced false turn-on. Use Value: Responds in <1 ps to limit gate-source voltage to ≤26.0 V, preserving driver IC SOA and preventing shoot-through faults. |
Use Scenario: Overvoltage protection on AC/DC adapter input and microcontroller reset line in smart home appliances. IC Role / Device Role / Timing Role: Secondary-level TVS on internal 5 V/3.3 V rails after primary fuse and MOV stage. Use Value: Adds precise, low-leakage (≤1.0 µA) clamping to meet IEC 61000-4-2 Level 4 ESD immunity without loading regulated supplies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ16A-E3/5A (Vishay) | Same VWM (16 V), but SMC (DO-214AB) surface-mount package; 400 W PPPM; slightly higher VC (26.5 V). | Designed for space-constrained PCB layouts requiring reflow assembly; lacks AEC-Q101 qualification in base E3 version. | Select SMAJ16A-E3/5A only if board real estate is limited and automotive qualification is not required. |
| 1.5KE16A (Littelfuse) | Same VWM (16 V), DO-201AD package; 1500 W PPPM; higher VC (25.5 V); no AEC-Q101 or JESD 201 Class 2 certification. | Higher energy handling suits heavy-industrial surge environments but lacks automotive process controls and traceability. | Choose 1.5KE16A where extreme surge robustness outweighs automotive compliance and long-term whisker risk mitigation. |
Compared with SMAJ16A-E3/5A and 1.5KE16A, SA16HE3/73 delivers guaranteed AEC-Q101 qualification, JESD 201 Class 2 whisker resistance, and optimized clamping for 12 V system protection - making it the preferred choice for automotive OEM and Tier 1 production programs requiring full PPAP documentation and zero-defect reliability.
Availability
SA16HE3/73 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, motor drive gate protection, and consumer appliance control boards requiring stable component supply and full automotive-grade traceability.
Supply support for SA16HE3/73 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, MOSFETs, and TVS devices with emphasis on reliability, efficiency, and application-specific optimization.
The TransZORB® TVS family - including SA16HE3/73 - was engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom infrastructure where failure modes must be eliminated at the component level.
FAQ
What is the clamping voltage of SA16HE3/73 at its rated peak pulse current?
The SA16HE3/73 has a maximum clamping voltage (VC) of 26.0 V at its peak pulse current (IPPM) of 19.2 A, measured using the standard 10/1000 µs waveform. This value ensures that protected circuits remain within safe operating limits during surge events. The SA16HE3/73 maintains this clamping performance across its full operating temperature range and lifetime, validated under AEC-Q101 stress conditions.
Is SA16HE3/73 suitable for automotive applications?
Yes, SA16HE3/73 is AEC-Q101 qualified and carries the HE3 suffix indicating compliance with automotive stress testing, JESD 201 Class 2 whisker resistance, and full traceability. It is widely deployed in engine control modules, body electronics, and ADAS sensor interfaces where sustained reliability under thermal cycling and vibration is mandatory. The SA16HE3/73 meets all electrical and mechanical requirements for under-hood and cabin-mounted automotive subsystems.
What does the 'HE3' suffix mean in SA16HE3/73?
The 'HE3' suffix in SA16HE3/73 indicates two key qualifications: 'H' denotes AEC-Q101 qualification, and 'E3' specifies RoHS-compliant construction with JESD 201 Class 2 whisker resistance. This distinguishes it from commercial-grade 'E3' variants and confirms suitability for automotive production. The SA16HE3/73 is manufactured and tested to automotive process controls, including lot traceability, burn-in, and extended temperature life testing.
How does SA16HE3/73 compare to bi-directional TVS diodes like SA16CA?
SA16HE3/73 is uni-directional and intended for DC rail protection where polarity is fixed, offering lower forward voltage drop and tighter parameter control than bi-directional counterparts. In contrast, SA16CA provides symmetrical clamping for AC or floating signal lines but lacks the same AEC-Q101 validation depth in the HE3 variant. For 12 V automotive power rails, SA16HE3/73 delivers superior surge margin and qualification rigor compared to SA16CA.
What is the maximum operating temperature for SA16HE3/73?
The SA16HE3/73 has a maximum junction temperature (TJ) of +175 °C, enabling reliable operation in high-ambient environments such as engine compartments and industrial motor drives. Its thermal design supports continuous power dissipation up to 3.0 W on an infinite heatsink at 75 °C lead temperature, with derating per Figure 5 in the Vishay datasheet. This rating is fully validated under AEC-Q101 temperature cycling and high-temperature operating life tests.
SA16HE3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 16V
- Voltage - Breakdown (Min):
- 17.8V
- Voltage - Clamping (Max) @ Ipp:
- 28.8V
- Current - Peak Pulse (10/1000µs):
- 17.4A
- Power - Peak Pulse:
- 500W
- 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:
- DO-204AC (DO-15)
SA16HE3/73 FAQ
1.How can I place an order for SA16HE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA16HE3/73 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 SA16HE3/73 reliable?
The price and inventory of SA16HE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA16HE3/73 is usually 5 days.
3.What payment methods are accepted for SA16HE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA16HE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA16HE3/73?
SA16HE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA16HE3/73 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 SA16HE3/73?
For technical support, including SA16HE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA16HE3/73 requirements.
6.How does Aetrix verify that SA16HE3/73 is sourced from the original manufacturer or authorized distributors?
All SA16HE3/73 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 SA16HE3/73 meets industry standards.
7.What is the process for return or replacement of SA16HE3/73?
All SA16HE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with SA16HE3/73, 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 SA16HE3/73 part is unused and in its original packaging.
Return procedure for SA16HE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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