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Vishay General Semiconductor - Diodes Division SMA5J17CAHE3/61
- Part No.:
- SMA5J17CAHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J17CAHE3/61.pdf
- Description:
- TVS DIODE 17VWM 27.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,972
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Product details
Overview
SMA5J17CAHE3/61 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection on signal and power lines. It features a 17 V standoff voltage (VWM), 18.9–20.9 V breakdown range (VBR), 500 W peak pulse power (10/1000 µs), clamping voltage of 27.6 V at 18.1 A, and operates from –55 °C to +150 °C - used in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMA5J17CAHE3/61 datasheet, SMA5J17CAHE3/61 pinout, SMA5J17CAHE3/61 application, or SMA5J17CAHE3/61 equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, 500 W surge rating, low thermal resistance (RθJA = 80 °C/W), and compatibility with automated SMT assembly on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device functions as a voltage-clamped crowbar during transient events, responding within picoseconds to divert surge current away from protected circuitry. Its bidirectional symmetry ensures identical clamping behavior in both polarities, with no polarity marking required on the SMA package.
It employs a glass-passivated silicon junction for stable breakdown characteristics and low incremental surge resistance, meeting MSL Level 1 (260 °C reflow) and rated for repetitive operation under derated conditions above 25 °C ambient per Fig. 2 of the datasheet.
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 breakdown occurs within this range at 1 mA test current |
| VC @ IPPM | 27.6 V - clamps transients to ≤27.6 V when subjected to 18.1 A peak pulse (10/1000 µs) |
| PPPM | 500 W - peak surge power handling capacity under standardized waveform |
| IPPM | 18.1 A - maximum non-repetitive surge current it can safely shunt |
| TJ range | –55 °C to +150 °C - enables use in under-hood automotive and industrial environments |
| Package | SMA (DO-214AC) - surface-mount, low-profile package compatible with J-STD-002 soldering |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads; meets UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance. Bidirectional construction means no cathode band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient current path | Both terminals function identically; bidirectional conduction allows placement without orientation check |
| Case (body) | Thermal and mechanical interface | Plastic body provides electrical isolation; thermal path relies on PCB copper pad area (5.0 mm × 5.0 mm per terminal) |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity constraints |
| AEC-Q101 qualification | Validated for automotive applications including engine control modules and ADAS sensor interfaces |
| 500 W peak pulse power | Supports IEC 61000-4-5 Level 4 (4 kV line-to-line, 2 Ω source impedance) compliance with margin |
| Glass-passivated junction | Ensures long-term stability of VBR and low leakage (<1 μA at VWM) across temperature and life cycle |
| MSL Level 1 rating | Permits standard SMT reflow without pre-baking, reducing manufacturing complexity |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: TVS diode placed at connector entry point to clamp fast transients before reaching signal conditioning ICs. Use Value: Prevents latch-up or permanent damage to downstream ASICs by limiting voltage to ≤27.6 V during 18.1 A surges. | Use Scenario: Shielding digital input/output channels on programmable logic controllers from field-induced surges in factory automation. IC Role / Device Role / Timing Role: Standoff-rated protector on 24 V DC I/O lines, absorbing energy from relay coil flyback and lightning-induced coupling. Use Value: Maintains system uptime by eliminating false triggering and component failure due to >1 kV transients. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Safeguarding Ethernet PHY front-ends and PoE injectors against induced surges on twisted-pair cabling. IC Role / Device Role / Timing Role: Bidirectional clamping element across differential pairs to suppress common-mode transients without distorting signal integrity. Use Value: Enables robust 10/100/1000BASE-T operation in unshielded environments with <10 ns response time. | Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters after rectification, protecting switching controllers and optocouplers. IC Role / Device Role / Timing Role: Clamp device across bulk capacitor to absorb residual spikes from transformer leakage inductance. Use Value: Reduces need for oversized capacitors and improves reliability under repeated surge stress (e.g., EN 61000-4-5). |
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-M3/61 | Halogen-free, RoHS-compliant variant; identical electrical specs and AEC-Q101 qualification | No functional difference; selected where halogen-free materials are mandated by OEM or regional regulation | Choose SMA5J17CA-M3/61 when environmental compliance requires halogen-free packaging. |
| SMA6J17CAHE3/61 | 600 W peak pulse power (vs. 500 W), same VWM/VBR/VC, larger thermal mass | Better suited for higher-energy threats (e.g., ISO 7637-2 Pulse 5a); requires same footprint but higher board-level thermal design margin | Choose SMA6J17CAHE3/61 when system-level testing reveals marginal margin with 500 W rating. |
Compared with SMA5J17CAHE3/61, the SMA5J17CA-M3/61 offers identical protection performance with halogen-free construction, while the SMA6J17CAHE3/61 delivers 20 % higher surge power handling at the cost of slightly larger package volume and increased thermal demand on PCB layout.
Availability
SMA5J17CAHE3/61 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, and telecom line interface designs requiring stable component supply, AEC-Q101 qualification, and consistent surge immunity performance.
Supply support for SMA5J17CAHE3/61 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific optimization.
The SMA5J series is engineered for high-power-density transient suppression in space-constrained, high-reliability systems - particularly targeting automotive, industrial, and communications infrastructure where AEC-Q101 validation and repeatable clamping performance are mandatory.
FAQ
What is the clamping voltage of the SMA5J17CAHE3/61 under maximum surge conditions?
The SMA5J17CAHE3/61 clamps to a maximum of 27.6 V when subjected to its rated peak pulse current of 18.1 A (10/1000 µs waveform). This value is measured at the device terminals under standardized test conditions with 5.0 mm × 5.0 mm copper pads per lead, and represents the upper limit of voltage seen by protected circuitry during worst-case surge events.
Is the SMA5J17CAHE3/61 suitable for automotive applications?
Yes, the SMA5J17CAHE3/61 is AEC-Q101 qualified and explicitly designated for automotive use via the "HE3" suffix. It supports under-hood and cabin applications including engine control units, ADAS sensors, and infotainment interfaces where robust transient immunity and long-term reliability under thermal cycling are required.
Does the SMA5J17CAHE3/61 have polarity markings on the package?
No, the SMA5J17CAHE3/61 is a bidirectional TVS diode and carries no cathode band or polarity marking on the SMA (DO-214AC) case. Its symmetrical construction allows installation in either orientation, simplifying PCB layout and automated assembly for AC-coupled or floating signal paths.
What is the maximum operating temperature for the SMA5J17CAHE3/61?
The SMA5J17CAHE3/61 has a specified operating junction and storage temperature range of –55 °C to +150 °C. This allows deployment in demanding environments such as automotive engine compartments, industrial motor drives, and outdoor telecom equipment without derating up to the full 150 °C limit.
How does the SMA5J17CAHE3/61 differ from unidirectional variants like SMA5J17AHE3/61?
The SMA5J17CAHE3/61 is bidirectional with symmetric clamping in both directions and no polarity marking, whereas SMA5J17AHE3/61 is unidirectional, features a cathode band, and conducts only in reverse bias. The "CA" version is used for AC signals or floating nodes; the "A" version suits DC rails where forward conduction must be blocked.
SMA5J17CAHE3/61 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA5J17CAHE3/61 FAQ
1.How can I place an order for SMA5J17CAHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J17CAHE3/61 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 SMA5J17CAHE3/61 reliable?
The price and inventory of SMA5J17CAHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J17CAHE3/61 is usually 5 days.
3.What payment methods are accepted for SMA5J17CAHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J17CAHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J17CAHE3/61?
SMA5J17CAHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J17CAHE3/61 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 SMA5J17CAHE3/61?
For technical support, including SMA5J17CAHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J17CAHE3/61 requirements.
6.How does Aetrix verify that SMA5J17CAHE3/61 is sourced from the original manufacturer or authorized distributors?
All SMA5J17CAHE3/61 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 SMA5J17CAHE3/61 meets industry standards.
7.What is the process for return or replacement of SMA5J17CAHE3/61?
All SMA5J17CAHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J17CAHE3/61, 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 SMA5J17CAHE3/61 part is unused and in its original packaging.
Return procedure for SMA5J17CAHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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