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Vishay General Semiconductor - Diodes Division SMA5J30CA-E3/5A
- Part No.:
- SMA5J30CA-E3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J30CA-E3/5A.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,102
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Product details
Overview
SMA5J30CA-E3/5A 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 30 V stand-off voltage (VWM), 48.4 V maximum clamping voltage (VC) at 10.3 A peak pulse current (IPPM), and 500 W peak pulse power (10/1000 μs waveform), used to safeguard MOSFETs and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the SMA5J30CA-E3/5A datasheet, SMA5J30CA-E3/5A pinout, SMA5J30CA-E3/5A application, or SMA5J30CA-E3/5A equivalent, key selection criteria include bidirectional clamping capability, low incremental surge resistance, AEC-Q101 qualification eligibility, RoHS-compliant matte tin plating, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with breakdown voltage (VBR) specified between 33.3 V and 36.8 V at 1 mA test current. Its clamping behavior under 10/1000 μs transients ensures predictable voltage limiting during ESD and load-switching events.
Thermal performance is defined by junction-to-ambient thermal resistance (RθJA) of 80 °C/W and junction-to-lead (RθJL) of 25 °C/W, enabling reliable operation up to 150 °C junction temperature. The device meets MSL Level 1 per J-STD-020 with 260 °C reflow peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 33.3 V / 36.8 V - Breakdown occurs within this range at 1 mA, defining turn-on threshold |
| VC @ IPPM | 48.4 V - Clamped voltage seen by protected circuit during 10.3 A 10/1000 μs surge |
| PPPM | 500 W - Peak transient power dissipation capability under standardized surge waveform |
| IPPM | 10.3 A - Maximum non-repetitive surge current the device safely clamps without failure |
| TJ max. | +150 °C - Maximum allowable junction temperature for continuous operation |
| Package | SMA (DO-214AC) - Surface-mount package with 5.28 mm × 4.50 mm outline and 2.54 mm lead pitch |
Pinout & Package
SMA5J30CA-E3/5A uses a two-terminal SMA (DO-214AC) package with no polarity marking-consistent with bidirectional construction. Terminals are matte tin plated and solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Either terminal serves as anode or cathode depending on instantaneous polarity; no fixed polarity |
| Case (body) | Non-electrical mechanical interface | Plastic-molded body provides insulation and mechanical mounting; no electrical connection |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving protection margin for downstream ICs |
| MSL Level 1 rating | Supports standard Pb-free reflow profiles up to 260 °C peak without preconditioning |
| Glass passivated junction | Enhances long-term reliability and stability of breakdown characteristics under thermal cycling |
| RoHS-compliant, halogen-free option available | E3 suffix denotes commercial-grade RoHS compliance; M3 suffix adds halogen-free certification |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN transceiver signal lines and analog sensor inputs (e.g., pressure, temperature) from load-dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential pair or single-ended line to limit transient excursions. Use Value: Maintains signal integrity below 48.4 V during 10.3 A surges, preventing latch-up or damage to 3.3 V/5 V sensor interface ICs. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to relay coil flyback and motor drive noise. IC Role / Device Role / Timing Role: Parallel-connected transient suppressor on 24 V DC input terminals to shunt inductive energy. Use Value: Absorbs 500 W surge energy without degradation, enabling robust operation in harsh factory environments. |
| Telecom Line Interface | Consumer Power Adapter Output |
Use Scenario: Secondary-side surge protection on Ethernet PHY magnetics or RS-485 bus lines in network equipment. IC Role / Device Role / Timing Role: Fast-response clamp suppressing EFT/burst and lightning-induced common-mode transients. Use Value: Sub-1 ns response time limits voltage rise before protection ICs activate, reducing system-level failure risk. |
Use Scenario: Output rail protection in USB-C PD adapters and wall chargers against output short-circuit transients. IC Role / Device Role / Timing Role: Final-stage overvoltage limiter placed after DC-DC converter to protect connected devices. Use Value: Clamps to 48.4 V during fault conditions, ensuring compliance with IEC/UL 62368-1 secondary circuit limits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J30CA-M3/5A | Halogen-free, RoHS-compliant variant with identical electrical specs and package | Required where halogen-free material compliance is mandated (e.g., EU public infrastructure projects) | Select when environmental compliance exceeds standard RoHS requirements |
| SMA5J30AHE3_A/I | AEC-Q101 qualified version; same VWM, VC, PPPM, but validated for automotive temperature cycling and humidity testing | Approved for under-hood and ADAS module use; not rated for commercial-only applications | Choose for automotive OEM or Tier-1 designs requiring formal qualification evidence |
Compared with SMA5J30CA-E3/5A, the M3/5A offers halogen-free construction without performance trade-offs, while the HE3_A/I variant adds AEC-Q101 validation for automotive deployment-neither is pin-compatible drop-in replacements due to differing qualification scope and material declarations.
Availability
SMA5J30CA-E3/5A is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer power adapter output rails requiring stable component supply and consistent surge performance across production batches.
Supply support for SMA5J30CA-E3/5A 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, power density, and application-specific qualification.
The SMA5J series was developed to deliver high-power-density transient suppression in compact surface-mount packages for automotive, industrial, and telecom systems where board space and surge robustness are critical constraints.
FAQ
What is the clamping voltage of the SMA5J30CA-E3/5A under a 10/1000 μs surge?
The SMA5J30CA-E3/5A clamps to a maximum of 48.4 V when subjected to its rated 10.3 A peak pulse current (IPPM) under the standardized 10/1000 μs waveform. This value is measured at the device terminals and defines the upper voltage limit imposed on the protected circuit during transient events. The SMA5J30CA-E3/5A maintains this clamping performance across its full operating temperature range from -55 °C to +150 °C.
Is the SMA5J30CA-E3/5A suitable for automotive applications?
The SMA5J30CA-E3/5A is RoHS-compliant and built on Vishay's qualified platform, but it is not AEC-Q101 certified. For automotive use, Vishay offers the SMA5J30CAHE3_A/I variant, which carries formal AEC-Q101 qualification. The SMA5J30CA-E3/5A may be used in non-safety-critical aftermarket or infotainment subsystems where qualification is not mandated-but the SMA5J30CA-E3/5A itself lacks the test documentation required for OEM-tier deployment.
How does the bidirectional design of the SMA5J30CA-E3/5A affect PCB layout?
The SMA5J30CA-E3/5A has no polarity marking and functions identically regardless of orientation, simplifying PCB layout and eliminating risk of reverse installation. Unlike unidirectional TVS diodes, it requires no attention to cathode band alignment-making it ideal for differential signal lines, AC-coupled interfaces, or space-constrained layouts where routing symmetry matters. The SMA5J30CA-E3/5A mounts using standard SMA footprint dimensions (5.28 mm × 4.50 mm).
What is the thermal resistance of the SMA5J30CA-E3/5A, and how does it impact power handling?
The SMA5J30CA-E3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W when mounted on 5.0 mm × 5.0 mm copper pads per terminal. This value determines steady-state temperature rise under DC leakage or repetitive surges. While the device handles 500 W peak pulses, sustained power must remain well below 1 W to avoid exceeding the 150 °C maximum junction temperature-the SMA5J30CA-E3/5A is optimized for transient, not continuous, dissipation.
Does the SMA5J30CA-E3/5A meet moisture sensitivity level requirements for lead-free reflow?
Yes-the SMA5J30CA-E3/5A meets MSL Level 1 per J-STD-020, meaning it can be stored indefinitely at ≤30 °C/85 % RH and withstand lead-free reflow profiles with a peak temperature of 260 °C without baking or special handling. This eliminates moisture-related popcorning risk and supports standard SMT assembly processes-the SMA5J30CA-E3/5A is fully compatible with automated placement and reflow in high-volume manufacturing.
SMA5J30CA-E3/5A 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):
- 30V
- Voltage - Breakdown (Min):
- 33.3V
- Voltage - Clamping (Max) @ Ipp:
- 48.4V
- Current - Peak Pulse (10/1000µs):
- 10.3A
- 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)
SMA5J30CA-E3/5A FAQ
1.How can I place an order for SMA5J30CA-E3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J30CA-E3/5A 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 SMA5J30CA-E3/5A reliable?
The price and inventory of SMA5J30CA-E3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J30CA-E3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J30CA-E3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J30CA-E3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J30CA-E3/5A?
SMA5J30CA-E3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J30CA-E3/5A 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 SMA5J30CA-E3/5A?
For technical support, including SMA5J30CA-E3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J30CA-E3/5A requirements.
6.How does Aetrix verify that SMA5J30CA-E3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J30CA-E3/5A 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 SMA5J30CA-E3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J30CA-E3/5A?
All SMA5J30CA-E3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J30CA-E3/5A, 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 SMA5J30CA-E3/5A part is unused and in its original packaging.
Return procedure for SMA5J30CA-E3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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