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Vishay General Semiconductor - Diodes Division SMA5J16HE3/5A
- Part No.:
- SMA5J16HE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J16HE3/5A.pdf
- Description:
- TVS DIODE 16VWM 28.8VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,980
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Product details
Overview
SMA5J16HE3/5A from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, designed for high-energy surge protection on power and signal lines. It features a 16 V stand-off voltage (VWM), 17.8–19.7 V breakdown voltage (VBR), 26.0 V clamping voltage (VC) at 19.2 A peak pulse current, and 500 W peak pulse power rating with 10/1000 µs waveform - used in automotive power rail and industrial sensor interface protection.
For engineers reviewing the SMA5J16HE3/5A datasheet, SMA5J16HE3/5A pinout, SMA5J16HE3/5A application, or SMA5J16HE3/5A equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 150 °C max junction temperature, RoHS-compliant matte tin plating, and compatibility with automated SMT placement on standard 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 µA leakage at 16 V), then rapidly avalanches to clamp transients above ~17.8 V. Its glass-passivated junction ensures stable breakdown and low incremental surge resistance, critical for repeatable clamping performance during repetitive ESD or load-dump events.
Designed for surface-mount use in space-constrained automotive and industrial PCBs, the device meets MSL Level 1 per J-STD-020 (260 °C peak reflow), supports 40 A non-repetitive forward surge (8.3 ms half-sine), and delivers thermal resistance of 25 °C/W junction-to-lead - enabling effective heat dissipation when mounted per recommended pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - maximum continuous reverse operating voltage before conduction begins; defines safe operating margin for 12 V nominal systems. |
| VBR (min/max) | 17.8 V / 19.7 V at 1 mA - guaranteed avalanche onset range; ensures predictable turn-on across temperature and unit variation. |
| VC @ IPPM | 26.0 V at 19.2 A - clamped voltage during 500 W transient; limits downstream IC stress below 26 V under worst-case surge. |
| PPPM | 500 W - peak pulse power handling with 10/1000 µs waveform; sufficient for ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 3 surges. |
| TJ max | +150 °C - maximum junction temperature; enables operation in under-hood automotive environments and high-ambient industrial enclosures. |
| Qualification | AEC-Q101 qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness. |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, molded plastic case with matte tin-plated leads. Cathode indicated by band on one end; polarity critical for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or return path; completes clamping path during overvoltage event. |
| Cathode (banded end) | High-side connection point | Connected to protected line (e.g., 12 V rail); avalanche conduction occurs from cathode to anode when VWM exceeded. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable, low-drift breakdown voltage and long-term reliability under thermal cycling and humidity exposure. |
| MSL Level 1 rating | Supports lead-free reflow up to 260 °C peak without popcorn effect or delamination - eliminates pre-bake requirements. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ESD), improving clamping precision and system immunity. |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body electronics, and ADAS modules requiring zero-failure field performance. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between power input and chassis ground. Use Value: Clamps transients to ≤26.0 V while absorbing 500 W pulses - preventing damage to LDOs, microcontrollers, and CAN transceivers. | Use Scenario: Safeguarding analog inputs of pressure/temperature sensors in PLC I/O modules exposed to motor switching noise. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF) unidirectional clamp on signal line referenced to local ground. Use Value: Sub-26 V clamping preserves ADC reference integrity and avoids false triggering in 0–5 V or 4–20 mA front-end circuits. |
| Telecom DC Power Input | Consumer Appliance Motor Drive |
Use Scenario: Surge suppression on 24 V DC input of PoE-powered network switches subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Primary-level TVS on bulk DC input before DC-DC converter stage. Use Value: Withstands 19.2 A peak pulse at 26.0 V clamp, meeting IEC 61000-4-5 Level 3 (1 kV/2 kV) requirements without derating. | Use Scenario: Protecting gate drivers and MCU I/O in washing machine motor control boards from inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS across MOSFET source-drain or driver supply rails. Use Value: Fast response time and low Rsurge limit voltage overshoot during 40 A 8.3 ms surge - preserving gate oxide integrity and logic-level stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J16A-E3/5A | Same electrical specs but commercial-grade (non-AEC-Q101); identical DO-214AC package and pinout. | Lacks automotive qualification; suitable for industrial/commercial designs where AEC-Q101 is not mandated. | Select when cost sensitivity outweighs automotive reliability requirements and full qualification documentation is unnecessary. |
| SMC5J16AHE3/5A | Higher 1500 W PPPM, larger DO-214AB (SMC) package; same VWM/VC ratings and AEC-Q101 qualification. | Requires larger PCB footprint and different pad layout; better suited for higher-energy surge environments (e.g., heavy-duty vehicle systems). | Choose when system-level surge testing exceeds 500 W capability and board space permits SMC footprint. |
Compared with SMA5J16A-E3/5A, the SMA5J16HE3/5A adds AEC-Q101 validation for automotive use; compared with SMC5J16AHE3/5A, it trades 1000 W headroom for 40% smaller DO-214AC footprint - optimizing space-constrained automotive modules needing certified reliability.
Availability
SMA5J16HE3/5A is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and telecom DC power inputs requiring stable component supply, AEC-Q101 compliance, and high-power transient suppression in compact SMT packages.
Supply support for SMA5J16HE3/5A 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, power density, and automotive-grade qualification.
The SMA5J series is engineered for high-energy transient suppression in space-constrained automotive and industrial applications - delivering 500 W surge capability in the industry-standard DO-214AC (SMA) footprint with AEC-Q101 validation.
FAQ
What is the clamping voltage of the SMA5J16HE3/5A under peak pulse conditions?
The SMA5J16HE3/5A has a maximum clamping voltage (VC) of 26.0 V at 19.2 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured per JEDEC standards and guarantees that downstream circuitry remains protected below 26.0 V during standardized surge events. The SMA5J16HE3/5A maintains this clamping performance across its rated junction temperature range of –55 °C to +150 °C.
Is the SMA5J16HE3/5A suitable for automotive applications?
Yes, the SMA5J16HE3/5A is AEC-Q101 qualified and explicitly designed for automotive use. Its qualification covers temperature cycling, highly accelerated life testing (HALT), and ESD robustness per automotive reliability standards. The SMA5J16HE3/5A is commonly deployed in engine control units, body control modules, and ADAS power supplies where sustained operation at 150 °C and immunity to load-dump transients are required.
What does the "HE3" suffix indicate in SMA5J16HE3/5A?
The "HE3" suffix in SMA5J16HE3/5A denotes two key attributes: "H" indicates AEC-Q101 qualification, and "E3" signifies RoHS-compliant, matte tin-plated leads meeting JESD 201 Class 2 whisker resistance. This distinguishes it from commercial-grade variants like SMA5J16A-E3/5A (no "H") and confirms its suitability for automotive and high-reliability industrial applications.
How does the SMA5J16HE3/5A differ from bi-directional TVS diodes like SMA5J16CA?
The SMA5J16HE3/5A is unidirectional and functions only in reverse-bias avalanche mode, requiring correct polarity placement (cathode toward protected line). In contrast, SMA5J16CA is bi-directional with symmetrical clamping in both directions and no polarity marking. The SMA5J16HE3/5A offers lower leakage and tighter VBR tolerance for DC-coupled protection, whereas SMA5J16CA suits AC or floating signal lines.
What is the thermal resistance specification for the SMA5J16HE3/5A?
The SMA5J16HE3/5A has a typical junction-to-lead thermal resistance (RθJL) of 25 °C/W and junction-to-ambient (RθJA) of 80 °C/W when mounted on 0.2" × 0.2" copper pads per Vishay's recommended layout. These values enable accurate thermal modeling for high-duty-cycle surge environments and confirm the device can sustain repeated 500 W pulses without exceeding its 150 °C TJ limit when properly heatsinked.
SMA5J16HE3/5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- 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 ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA5J16HE3/5A FAQ
1.How can I place an order for SMA5J16HE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J16HE3/5A 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 SMA5J16HE3/5A reliable?
The price and inventory of SMA5J16HE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J16HE3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J16HE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J16HE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J16HE3/5A?
SMA5J16HE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J16HE3/5A 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 SMA5J16HE3/5A?
For technical support, including SMA5J16HE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J16HE3/5A requirements.
6.How does Aetrix verify that SMA5J16HE3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J16HE3/5A 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 SMA5J16HE3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J16HE3/5A?
All SMA5J16HE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J16HE3/5A, 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 SMA5J16HE3/5A part is unused and in its original packaging.
Return procedure for SMA5J16HE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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