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Vishay General Semiconductor - Diodes Division SMA5J17A-E3/61
- Part No.:
- SMA5J17A-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J17A-E3/61.pdf
- Description:
- TVS DIODE 17VWM 27.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMA5J17A-E3/61 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for robust overvoltage protection of sensitive electronics. It features a 17 V stand-off voltage (VWM), 18.9–20.9 V breakdown voltage (VBR) at 1 mA, 27.6 V clamping voltage (VC) at 18.1 A peak pulse current (IPPM), and 500 W peak pulse power (PPPM) with 10/1000 μs waveform - used to safeguard MOSFETs, ICs, and sensor signal lines in automotive and industrial power supplies.
For engineers reviewing the SMA5J17A-E3/61 datasheet, SMA5J17A-E3/61 pinout, SMA5J17A-E3/61 application, or SMA5J17A-E3/61 equivalent, key selection criteria include clamping performance under 10/1000 μs surge, thermal resistance (RθJA = 80 °C/W), RoHS-compliant matte tin plating, AEC-Q101 qualification eligibility (via HE3 suffix), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, leveraging glass-passivated junction technology for stable breakdown and low incremental surge resistance. Its response time is sub-nanosecond, enabling effective suppression of fast transients from inductive switching or ESD events.
The device is rated for -55 °C to +150 °C operating junction temperature, with thermal resistance of 80 °C/W (junction-to-ambient) and 25 °C/W (junction-to-lead), and meets MSL Level 1 per J-STD-020 at 260 °C peak reflow temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - maximum reverse working voltage before conduction; defines safe operating range for continuous DC bias |
| VBR min/max | 18.9 V / 20.9 V at 1 mA - guaranteed avalanche initiation window; ensures predictable turn-on under surge |
| VC @ IPPM | 27.6 V at 18.1 A - clamped voltage during 10/1000 μs surge; determines protected circuit's maximum stress level |
| PPPM | 500 W - peak pulse power handling capability; sets energy absorption limit for transient events |
| RθJA | 80 °C/W - junction-to-ambient thermal resistance; informs PCB pad layout and derating above 25 °C |
| Polarity | Unidirectional - cathode marked by band; enables DC-biased protection without reverse leakage concerns |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry (reverse-biased during clamping) | Connected to protected line side; carries surge current into cathode during overvoltage event |
| Cathode | Clamping reference node | Connected to ground or low-impedance return path; defines clamping voltage relative to system reference |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable, repeatable avalanche characteristics and long-term reliability under repeated surge stress |
| Low profile SMA package | Enables high-density PCB layouts and compatibility with standard SMT pick-and-place equipment |
| MSL Level 1 rating | Supports lead-free reflow up to 260 °C peak without moisture-induced damage |
| AEC-Q101 qualification option | Available in HE3/HM3 variants for automotive-grade reliability validation in harsh environments |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges above 17 V. Use Value: Limits voltage seen by downstream regulators and microcontrollers to ≤27.6 V during 500 W transients, preventing latch-up or oxide damage. | Use Scenario: Shielding analog output lines of pressure/temperature sensors in factory automation systems. IC Role / Device Role / Timing Role: TVS connected across differential signal pair to suppress ESD and inductive coupling. Use Value: Sub-nanosecond response and low clamping voltage preserve signal integrity while meeting IEC 61000-4-2 Level 4 (15 kV air) requirements. |
| Consumer Power Adapter Input Stage | Telecom DC Power Interface |
Use Scenario: Safeguarding AC-DC converter primary-side rectifier and controller ICs from line surges. IC Role / Device Role / Timing Role: Mounted across bulk capacitor input to absorb 10/1000 μs line transients per IEC 61000-4-5. Use Value: 500 W PPPM rating handles repetitive surges without degradation; RoHS-compliant E3 suffix supports global compliance. | Use Scenario: Protecting PoE-powered equipment front-end from induced lightning surges on Ethernet cables. IC Role / Device Role / Timing Role: Unidirectional clamp on DC bias line (e.g., 48 V PSE output) referenced to local ground. Use Value: 27.6 V clamping ensures powered devices remain within safe operating area during 10/1000 μs common-mode 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 |
|---|---|---|---|
| SMA5J17CA-E3/61 | Bidirectional variant; symmetric clamping in both polarities; VBR min/max = 18.9–20.9 V same, but ID doubled for VWM ≤10 V (not applicable here) | Required where AC-coupled or floating signal lines need protection without polarity constraints | Select SMA5J17CA-E3/61 only if bidirectional clamping is needed; SMA5J17A-E3/61 is optimal for DC-biased rails with defined ground reference. |
| SMC5J17A-E3/5A | Same electrical specs but larger SMC (DO-214AB) package; RθJA = 35 °C/W vs. 80 °C/W; higher IFSM (100 A vs. 40 A) | Better thermal performance and surge endurance in high-power or high-temperature ambient designs | Choose SMC5J17A-E3/5A when board space allows and thermal derating or 8.3 ms surge margin is critical; SMA5J17A-E3/61 prioritizes compactness and cost. |
Compared with SMA5J17CA-E3/61 and SMC5J17A-E3/5A, the SMA5J17A-E3/61 delivers optimal balance of size, cost, and clamping performance for unidirectional DC protection in space-constrained automotive and industrial modules - without sacrificing reliability or RoHS compliance.
Availability
SMA5J17A-E3/61 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface design, and telecom DC power interface applications requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMA5J17A-E3/61 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, MOSFETs, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The SMA5J series is engineered for high-energy transient suppression in demanding environments - targeting automotive, industrial, and telecom systems where robustness, AEC-Q101 readiness, and consistent clamping performance are essential.
FAQ
What is the clamping voltage of the SMA5J17A-E3/61 under a 10/1000 μs surge?
The SMA5J17A-E3/61 has a maximum clamping voltage (VC) of 27.6 V at 18.1 A peak pulse current (IPPM), measured with a 10/1000 μs waveform. This value is specified in the Vishay datasheet (Document Number: 88875, Rev. 09-Jan-2024) and reflects the voltage seen across the device during standardized surge testing - critical for ensuring downstream components remain within safe operating limits. The SMA5J17A-E3/61 maintains this clamping performance consistently due to its glass-passivated junction and low incremental surge resistance.
Is the SMA5J17A-E3/61 RoHS-compliant and halogen-free?
Yes, the SMA5J17A-E3/61 is RoHS-compliant (per EU Directive 2011/65/EU) and uses matte tin-plated leads. However, it is not halogen-free; the "E3" suffix denotes commercial-grade RoHS compliance only. For halogen-free and RoHS-compliant versions, the "M3" suffix (e.g., SMA5J17A-M3/61) must be selected. Both E3 and M3 variants meet JESD 201 Class 2 whisker resistance requirements and are rated for MSL Level 1 reflow.
Does the SMA5J17A-E3/61 have AEC-Q101 qualification?
The SMA5J17A-E3/61 itself is not AEC-Q101 qualified; qualification applies only to variants with "HE3" or "HM3" suffixes (e.g., SMA5J17AHE3_A/H). These automotive-grade versions undergo additional stress testing per AEC-Q101 and are marked with revision codes. The E3/61 version is commercial-grade and suitable for non-automotive applications where AEC-Q101 is not mandated - though its construction (glass passivation, MSL Level 1, 150 °C TJ max) supports robust operation in many industrial settings.
What is the thermal resistance of the SMA5J17A-E3/61, and how does it affect layout?
The SMA5J17A-E3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value directly impacts PCB thermal design: larger copper areas or internal planes reduce effective RθJA, allowing higher sustained power dissipation. Derating curves in Figure 2 of the datasheet show >50 % power reduction above 25 °C ambient - so thermal management is essential for repeated surge duty cycles. The SMA5J17A-E3/61's RθJL of 25 °C/W also supports efficient heat transfer to PCB traces.
How does the SMA5J17A-E3/61 differ from the SMA5J17CA-E3/61?
The SMA5J17A-E3/61 is unidirectional, with polarity marked by a cathode band and optimized for DC-biased protection; the SMA5J17CA-E3/61 is bidirectional, with no polarity marking and symmetric clamping in both directions. Electrically, both share identical VBR (18.9–20.9 V), VC (27.6 V), and PPPM (500 W), but the CA version allows use on AC or floating nodes. The SMA5J17A-E3/61 offers lower reverse leakage at VWM (1.0 μA vs. 1.0 μA for CA at same VWM), making it preferable for low-power standby circuits.
SMA5J17A-E3/61 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 17V
- Voltage - Breakdown (Min):
- 18.9V
- Voltage - Clamping (Max) @ Ipp:
- 27.6V
- Current - Peak Pulse (10/1000µs):
- 18.1A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA5J17A-E3/61 FAQ
1.How can I place an order for SMA5J17A-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J17A-E3/61 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 SMA5J17A-E3/61 reliable?
The price and inventory of SMA5J17A-E3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J17A-E3/61 is usually 5 days.
3.What payment methods are accepted for SMA5J17A-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J17A-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J17A-E3/61?
SMA5J17A-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J17A-E3/61 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 SMA5J17A-E3/61?
For technical support, including SMA5J17A-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J17A-E3/61 requirements.
6.How does Aetrix verify that SMA5J17A-E3/61 is sourced from the original manufacturer or authorized distributors?
All SMA5J17A-E3/61 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 SMA5J17A-E3/61 meets industry standards.
7.What is the process for return or replacement of SMA5J17A-E3/61?
All SMA5J17A-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J17A-E3/61, 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 SMA5J17A-E3/61 part is unused and in its original packaging.
Return procedure for SMA5J17A-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA5J17A-E3/61 Tags
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