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Vishay General Semiconductor - Diodes Division SMA5J17CA-M3/5A
- Part No.:
- SMA5J17CA-M3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J17CA-M3/5A.pdf
- Description:
- TVS DIODE 17VWM 27.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,092
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Product details
Overview
SMA5J17CA-M3/5A from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on signal and power lines. It features a 17 V standoff voltage (VWM), 18.9–20.9 V breakdown range (VBR), 27.6 V maximum clamping voltage (VC) at 18.1 A peak pulse current, and 500 W peak pulse power (10/1000 μs waveform), used in automotive sensor protection and industrial I/O interface surge suppression.
For engineers reviewing the SMA5J17CA-M3/5A datasheet, SMA5J17CA-M3/5A pinout, SMA5J17CA-M3/5A application, or SMA5J17CA-M3/5A equivalent, key selection criteria include bidirectional clamping capability, 500 W surge rating, halogen-free RoHS compliance (M3 suffix), junction temperature range (−55 °C to +150 °C), and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling protection of AC-coupled or differential signal lines without polarity sensitivity. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at VWM), while the low incremental surge resistance supports consistent clamping performance under repetitive transients.
The device meets J-STD-020 MSL Level 1 (peak reflow 260 °C) and is rated for 150 °C maximum junction temperature. Thermal resistance is 80 °C/W (junction-to-ambient, mounted on 5.0 mm × 5.0 mm copper pads), making it suitable for high-density layouts where localized heating must be managed during surge events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working margin for 12 V nominal systems. |
| VBR min/max | 18.9 V / 20.9 V - Measured at 1 mA test current; ensures predictable turn-on threshold across production lot. |
| VC @ IPPM | 27.6 V - Clamped voltage at 18.1 A peak pulse current (10/1000 μs); limits downstream IC stress during ESD or load dump. |
| PPPM | 500 W - Peak pulse power handling capacity; supports IEC 61000-4-5 Level 4 (4 kV/2 Ω) surge testing when properly laid out. |
| IPPM | 18.1 A - Peak pulse current corresponding to VC; determines minimum trace width and pad thermal mass required. |
| TJ range | −55 °C to +150 °C - Full operational junction temperature range; validated for under-hood automotive and industrial environments. |
| Package | SMA (DO-214AC) - Surface-mount package with 5.28 mm × 4.50 mm footprint and 2.29 mm height; compatible with standard pick-and-place feeders. |
Pinout & Package
Package: SMA (DO-214AC), bidirectional configuration - no polarity marking; both terminals are electrically symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Either terminal conducts during positive or negative overvoltage event; no cathode band marking required for bidirectional types. |
| Case (body) | Thermal and mechanical interface | Plastic-molded body provides UL 94 V-0 flammability rating; solderable matte tin leads meet J-STD-002 and JESD 22-B102. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., RS-485), or ungrounded power rails without polarity constraints. |
| 500 W peak pulse power | Supports robust immunity to IEC 61000-4-5 surges up to 4 kV in 2 Ω/12 Ω source impedance configurations with proper PCB layout. |
| Halogen-free, RoHS-compliant (M3) | Meets environmental compliance requirements for automotive and industrial OEMs; avoids brominated flame retardants in molding compound. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and direct placement into reflow ovens without baking; simplifies manufacturing logistics. |
| Low leakage (<1.0 μA at VWM) | Minimizes standby power loss and prevents false triggering in high-impedance sensor bias networks. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between signal line and ground, responding within <1 ns to limit transient excursions. Use Value: Maintains signal integrity below 27.6 V clamping level during 100 V/50 ms load dump events, preventing latch-up in downstream ASICs. |
Use Scenario: Safeguarding PLC digital input modules against field-wiring induced surges from relay coil switching or lightning-induced coupling. IC Role / Device Role / Timing Role: Primary surge suppression element on 24 V DC input channels, shunting energy before reaching optocoupler or MCU GPIO. Use Value: Withstands 500 W pulses without degradation, enabling >100,000 surge cycles per IEC 61000-4-5 endurance testing. |
| Consumer Power Adapter Input | Telecom Line Card Protection |
Use Scenario: Secondary-side overvoltage suppression in USB-C PD adapters and AC/DC wall adapters exposed to mains-borne transients. IC Role / Device Role / Timing Role: Fast-response clamp across output rails (e.g., 5 V, 9 V, 15 V, 20 V), activated before linear regulator or USB controller damage occurs. Use Value: 17 V VWM aligns with 20 V PD profiles; 27.6 V VC stays below absolute maximum ratings of common USB PD controllers. |
Use Scenario: Protecting Ethernet PHY interfaces and POTS line drivers in DSLAMs and VoIP gateways from induced surges on twisted-pair cabling. IC Role / Device Role / Timing Role: Differential-mode TVS pair (two SMA5J17CA-M3/5A devices) across tip/ring or MDI/MDIX pairs. Use Value: Symmetrical clamping ensures balanced protection without skew; low capacitance (<100 pF at 0 V) preserves 100BASE-TX signal integrity. |
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-E3/5A | Same electrical specs; RoHS-compliant but not halogen-free (uses brominated flame retardant). | Acceptable for commercial-grade industrial designs where halogen-free requirement is not mandated. | Select when cost sensitivity outweighs halogen-free compliance; identical footprint and assembly process. |
| SMA5J17CAHM3_A/I | AEC-Q101 qualified variant; same M3 halogen-free construction plus automotive reliability validation. | Required for automotive ECUs, ADAS sensors, or any application requiring AEC-Q101 certification. | Choose for automotive programs needing qualification evidence; same thermal and electrical behavior, higher traceability. |
Compared with SMA5J17CA-M3/5A, the E3/5A offers identical surge performance at lower cost for non-automotive use, while the HM3_A/I adds AEC-Q101 qualification for mission-critical vehicle systems-neither is pin-compatible in the sense of drop-in replacement without documentation review, but all share identical SMA (DO-214AC) package and bidirectional functionality.
Availability
SMA5J17CA-M3/5A is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O interface hardening, and telecom line card surge suppression requiring stable component supply across multi-year production cycles.
Supply support for SMA5J17CA-M3/5A 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 protection devices with emphasis on reliability and application-specific optimization.
The SMA5J series is engineered for high-power-density transient suppression in space-constrained surface-mount applications, targeting automotive, industrial, and communications equipment where robustness and repeatability are critical.
FAQ
What is the clamping voltage of the SMA5J17CA-M3/5A under a 10/1000 μs surge?
The SMA5J17CA-M3/5A clamps to a maximum of 27.6 V when subjected to its rated peak pulse current of 18.1 A using the standardized 10/1000 μs waveform. This value is measured at the device terminals under specified test conditions (TA = 25 °C, mounted on 5.0 mm × 5.0 mm copper pads), and represents the upper bound of voltage seen by protected circuitry during surge events.
Is the SMA5J17CA-M3/5A suitable for automotive applications?
The SMA5J17CA-M3/5A itself is not AEC-Q101 qualified; however, it shares identical electrical and thermal specifications with the AEC-Q101 qualified variant SMA5J17CAHM3_A/I. For non-certified automotive subsystems (e.g., infotainment accessories), SMA5J17CA-M3/5A may be used subject to internal qualification-but full automotive ECUs require the HM3-suffixed qualified version.
Does the SMA5J17CA-M3/5A have polarity markings?
No. The SMA5J17CA-M3/5A is a bidirectional TVS diode and carries no cathode band or polarity marking on the SMA (DO-214AC) package body. Both terminals are functionally identical, allowing flexible PCB layout without orientation constraints-unlike unidirectional variants such as SMA5J17A.
What is the meaning of the "M3" suffix in SMA5J17CA-M3/5A?
The "M3" suffix indicates halogen-free, RoHS-compliant construction per Vishay's material categorization standard. It specifies that the molding compound contains no brominated or chlorinated flame retardants, meeting environmental requirements for consumer, industrial, and some automotive supply chains where halogen content is restricted.
How does the SMA5J17CA-M3/5A compare to SMA5J17A in terms of application use?
The SMA5J17CA-M3/5A is bidirectional and protects against voltage transients of either polarity, making it ideal for AC lines, differential buses, or floating grounds. In contrast, SMA5J17A is unidirectional and requires correct polarity alignment; it also supports forward surge current (IFSM = 40 A), which SMA5J17CA-M3/5A does not specify due to its symmetrical structure.
SMA5J17CA-M3/5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA5J17CA-M3/5A FAQ
1.How can I place an order for SMA5J17CA-M3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J17CA-M3/5A 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 SMA5J17CA-M3/5A reliable?
The price and inventory of SMA5J17CA-M3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J17CA-M3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J17CA-M3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J17CA-M3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J17CA-M3/5A?
SMA5J17CA-M3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J17CA-M3/5A 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 SMA5J17CA-M3/5A?
For technical support, including SMA5J17CA-M3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J17CA-M3/5A requirements.
6.How does Aetrix verify that SMA5J17CA-M3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J17CA-M3/5A 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 SMA5J17CA-M3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J17CA-M3/5A?
All SMA5J17CA-M3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J17CA-M3/5A, 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 SMA5J17CA-M3/5A part is unused and in its original packaging.
Return procedure for SMA5J17CA-M3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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