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Vishay General Semiconductor - Diodes Division SMA5J17HE3/5A
- Part No.:
- SMA5J17HE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J17HE3/5A.pdf
- Description:
- TVS DIODE 17VWM 30.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,362
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Product details
Overview
SMA5J17HE3/5A from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, designed for high-energy surge protection on DC power rails and signal lines. It features 17 V standoff voltage (VWM), 18.9–20.9 V breakdown voltage (VBR), 27.6 V clamping voltage at 18.1 A peak pulse current, and 500 W peak pulse power rating with 10/1000 µs waveform - used in automotive power supply input stages to protect downstream MOSFETs and microcontrollers.
For engineers reviewing the SMA5J17HE3/5A datasheet, SMA5J17HE3/5A pinout, SMA5J17HE3/5A application, or SMA5J17HE3/5A equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 150 °C max junction temperature, RoHS-compliant matte tin leads, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a clamping device that remains non-conductive below 17 V reverse standoff voltage and rapidly avalanches above its 18.9–20.9 V breakdown threshold to limit transient overvoltages. Its low incremental surge resistance and fast response time ensure effective suppression of inductive switching spikes and ESD events.
The device is rated for 500 W peak pulse power under 10/1000 µs waveform, derated linearly above 25 °C ambient per Fig. 2, and supports up to 40 A non-repetitive forward surge current (8.3 ms half-sine). Thermal resistance is 80 °C/W junction-to-ambient when mounted on minimum recommended pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - maximum continuous reverse operating voltage before conduction begins |
| VBR min/max | 18.9 V / 20.9 V - guaranteed avalanche onset range at 1 mA test current |
| VC @ IPPM | 27.6 V at 18.1 A - clamped voltage during full-rated 500 W transient event |
| PPPM | 500 W - peak surge energy handling capability with 10/1000 µs waveform |
| TJ max | +150 °C - maximum allowable junction temperature for reliable operation |
| Package | DO-214AC (SMA) - surface-mount package with 5.28 mm × 4.50 mm footprint and 2.29 mm height |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling and HTRB |
Pinout & Package
DO-214AC (SMA) package: molded plastic case with two coplanar leads; cathode indicated by band at one end; terminals are matte tin plated, solderable per J-STD-002 and JESD 22-B102; meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / reverse voltage reference | Connected to system ground or lower-potential rail in unidirectional configuration |
| Cathode (banded end) | Avalanche conduction terminal | Connected to protected line (e.g., 12 V battery rail); clamps transients to ground via anode |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable, repeatable avalanche characteristics and long-term reliability under repeated surge stress |
| AEC-Q101 qualification | Validated for automotive applications including engine control units and body electronics modules |
| MSL Level 1 (260 °C) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns |
| Low profile DO-214AC | 0.208" × 0.177" footprint enables compact PCB layout in space-constrained automotive modules |
| Junction capacitance < 100 pF | Minimizes signal distortion on data lines such as LIN bus or sensor analog outputs |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: 12 V battery feed to infotainment head unit exposed to load dump and jump-start surges. IC Role / Device Role: Unidirectional TVS placed between battery rail and input filter capacitor. Use Value: Clamps 100 V/100 ms load dump transients to ≤27.6 V, preventing damage to LDO regulators and MCU power pins. | Use Scenario: Analog output line from pressure sensor in hydraulic control valve subjected to ESD and cable discharge. IC Role / Device Role: TVS connected between signal line and ground, upstream of op-amp buffer. Use Value: Limits ESD pulses (IEC 61000-4-2 ±8 kV contact) to sub-30 V levels, preserving ADC accuracy and sensor linearity. |
| DC Motor Driver Gate Protection | Telecom Power Supply Surge Suppression |
Use Scenario: High-side N-channel MOSFET gate drive circuit in power seat actuator experiencing inductive kickback. IC Role / Device Role: TVS across gate-source terminals to clamp Miller-induced overshoot. Use Value: Suppresses >40 V transients within nanoseconds, avoiding unintended turn-on and gate oxide stress. | Use Scenario: -48 V telecom rectifier output feeding backplane distribution, subject to lightning-induced surges. IC Role / Device Role: TVS installed at PSE interface to absorb differential-mode surges before DC/DC converters. Use Value: Handles 500 W peak power without degradation, maintaining system uptime during outdoor cabinet surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J17A-E3/5A | Same electrical specs but commercial-grade (non-AEC-Q101 qualified); identical DO-214AC package and pinout | Lacks automotive qualification testing; suitable for industrial/commercial power supplies only | Select when AEC-Q101 is not required and cost optimization is prioritized |
| SMC5J17A | Higher 1500 W PPPM rating in larger DO-214AB (SMC) package; same VWM/VBR/VC values | Requires larger PCB area and higher thermal mass; better for sustained surge environments | Choose when system-level surge tests exceed 500 W or board layout allows larger footprint |
Compared with SMA5J17HE3/5A, SMA5J17A-E3/5A offers identical protection performance without automotive qualification, while SMC5J17A delivers triple the surge power handling in a physically larger package - enabling trade-offs between qualification assurance, board space, and robustness.
Availability
SMA5J17HE3/5A is available at Aetrix Electronics and suitable for automotive electronic control units, industrial motor drives, and telecom power systems requiring stable component supply with AEC-Q101 compliance and long-term lifecycle support.
Supply support for SMA5J17HE3/5A 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, and protection devices with emphasis on reliability and high-power density.
The SMA5J series is engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where robustness against load dump, ESD, and inductive switching is critical.
FAQ
What is the polarity configuration of SMA5J17HE3/5A?
SMA5J17HE3/5A is a unidirectional transient voltage suppressor diode, meaning it conducts only in reverse bias above its breakdown voltage. The banded end denotes the cathode and must be connected to the protected line; the anode connects to ground or the lower-potential reference. This configuration blocks forward current and clamps negative transients effectively.
Is SMA5J17HE3/5A suitable for automotive applications?
Yes, SMA5J17HE3/5A is AEC-Q101 qualified and explicitly rated for automotive use. Its construction includes glass-passivated junction, matte tin-plated leads compliant with JESD 201 Class 2 whisker testing, and operation up to +150 °C junction temperature - meeting requirements for engine bay and chassis-mounted ECUs.
What is the clamping voltage of SMA5J17HE3/5A at rated surge current?
The clamping voltage VC of SMA5J17HE3/5A is 27.6 V measured at 18.1 A peak pulse current (IPPM) under standardized 10/1000 µs waveform conditions. This value ensures protected circuits remain below critical voltage thresholds during worst-case transients while maintaining low let-through energy.
Does SMA5J17HE3/5A require special PCB layout considerations?
Yes - SMA5J17HE3/5A must be mounted on minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated 500 W pulse power dissipation. Smaller pads cause thermal derating; short, direct traces to ground minimize inductance and preserve clamping speed.
How does the HE3 suffix differ from E3 in SMA5J17HE3/5A?
The HE3 suffix in SMA5J17HE3/5A indicates RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance. In contrast, E3-only variants (e.g., SMA5J17A-E3/5A) are RoHS-compliant but lack automotive qualification and Class 2 whisker testing - making HE3 mandatory for automotive designs.
SMA5J17HE3/5A 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):
- 17V
- Voltage - Breakdown (Min):
- 18.9V
- Voltage - Clamping (Max) @ Ipp:
- 30.5V
- Current - Peak Pulse (10/1000µs):
- 16.4A
- 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)
SMA5J17HE3/5A FAQ
1.How can I place an order for SMA5J17HE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J17HE3/5A 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 SMA5J17HE3/5A reliable?
The price and inventory of SMA5J17HE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J17HE3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J17HE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J17HE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J17HE3/5A?
SMA5J17HE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J17HE3/5A 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 SMA5J17HE3/5A?
For technical support, including SMA5J17HE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J17HE3/5A requirements.
6.How does Aetrix verify that SMA5J17HE3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J17HE3/5A 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 SMA5J17HE3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J17HE3/5A?
All SMA5J17HE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J17HE3/5A, 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 SMA5J17HE3/5A part is unused and in its original packaging.
Return procedure for SMA5J17HE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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