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Vishay General Semiconductor - Diodes Division SMA6J22A-E3/61
- Part No.:
- SMA6J22A-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA6J22A-E3/61.pdf
- Description:
- TVS DIODE 22VWM 40.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,319
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Product details
Overview
SMA6J22A-E3/61 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features a 22 V stand-off voltage (VWM), 24.4–26.9 V breakdown voltage (VBR at IT = 1 mA), 34.5 V maximum clamping voltage at 17.4 A (10/1000 μs), 600 W peak pulse power rating, and operates across –55 °C to +150 °C junction temperature range. It protects MOSFETs, ICs, and sensor signal lines in industrial power supplies.
For engineers reviewing the SMA6J22A-E3/61 datasheet, SMA6J22A-E3/61 pinout, SMA6J22A-E3/61 application, or SMA6J22A-E3/61 equivalent, key selection criteria include clamping voltage at specified surge current, unidirectional polarity requirement, thermal resistance (RθJA = 120 °C/W), RoHS-compliant matte tin plating, and compatibility with automated SMT placement on PCBs with 5.0 mm × 5.0 mm copper pads per terminal.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal bias it presents high impedance (<0.2 μA leakage at 22 V), then rapidly avalanches when reverse voltage exceeds VBR (24.4–26.9 V), limiting transient energy via low dynamic resistance (RD = 0.437 Ω). Its 10/1000 μs waveform rating of 600 W and 8/20 μs rating of 4000 W reflect dual-use capability for slower inductive switching surges and faster lightning-induced transients.
Thermally, it relies on PCB copper pad area for heat dissipation-rated at 4 W power dissipation at TA = 50 °C with derating above that temperature-and achieves MSL level 1 moisture sensitivity with 260 °C lead-free reflow compatibility. The cathode band denotes polarity, and its DO-214AC outline ensures standard SMA footprint compatibility.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - Maximum continuous reverse operating voltage before significant leakage; defines safe DC or AC RMS working limit. |
| VBR (min/max) | 24.4 V / 26.9 V at IT = 1 mA - Breakdown onset range; determines minimum clamping threshold under surge conditions. |
| VC at IPPM | 34.5 V at 17.4 A (10/1000 μs) - Clamped voltage seen by protected circuit during standardized surge; must be below IC absolute maximum rating. |
| PPPM (10/1000 μs) | 600 W - Peak transient energy handling capacity for slow surges (e.g., inductive load turn-off); defines protection margin for 1 ms events. |
| RθJA | 120 °C/W - Junction-to-ambient thermal resistance on standard PCB layout; used to calculate max allowable power at given ambient temperature. |
| Polarity | Unidirectional - Blocks reverse voltage only; requires correct orientation relative to protected line's DC bias direction. |
| Package | SMA (DO-214AC) - Industry-standard surface-mount outline; compatible with automated pick-and-place and reflow soldering. |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case meeting UL 94 V-0 flammability rating; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102; cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line; conducts during forward-biased ESD or fault events. |
| Cathode | Reverse-biased clamping terminal | Connected to higher-potential side; avalanche conduction initiates here during overvoltage transients. |
Key Features
| Feature | Design Value |
|---|---|
| Clamping performance | 34.5 V VC at 17.4 A (10/1000 μs) enables robust protection of 24 V systems without exceeding downstream IC voltage limits. |
| Thermal reliability | Rated for TJ up to +150 °C and MSL level 1, supporting high-reliability industrial operation and lead-free reflow assembly. |
| Automated assembly support | Low-profile SMA package with J-STD-020 compliance ensures consistent placement yield in high-speed SMT lines. |
| Leakage control | ≤0.2 μA ID at VWM = 22 V minimizes standby power loss and avoids false triggering in precision analog or battery-powered circuits. |
Applications
| Industrial Motor Drive Protection | 24 V Power Rail Surge Suppression |
|---|---|
Use Scenario: Protecting gate drivers and logic ICs from flyback voltage spikes generated by relay or solenoid coil de-energization in PLC I/O modules. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed across DC supply input to clamp transients before they reach downstream regulators and controllers. Use Value: Limits spike amplitude to ≤34.5 V, preventing latch-up or permanent damage to 3.3 V/5 V logic powered from regulated 24 V rails. |
Use Scenario: Safeguarding 24 V input stage of programmable logic controllers against lightning-induced surges on field wiring. IC Role / Device Role / Timing Role: Primary front-end transient suppressor mounted at connector entry point, coordinated with upstream fusing and filtering. Use Value: Handles 4000 W (8/20 μs) surges typical of telecom-grade lightning tests while maintaining low leakage for stable system monitoring. |
| Automotive Body Control Module Inputs | Sensor Signal Line ESD Protection |
Use Scenario: Shielding LIN bus interface pins and switch inputs in BCMs from load dump and ISO 7637-2 pulse 1/2a transients. IC Role / Device Role / Timing Role: Secondary-level TVS on 24 V auxiliary rail feeding microcontroller peripherals, sized for repetitive surge endurance. Use Value: Withstands ≥50 A IFSM (8.3 ms half-sine), enabling resilience against repeated inductive switching events in vehicle subsystems. |
Use Scenario: Guarding analog outputs of pressure or temperature sensors connected to microcontrollers in HVAC control units. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS placed directly at sensor connector, minimizing signal distortion on 0–5 V output lines. Use Value: Dynamic resistance of 0.437 Ω ensures fast response and minimal overshoot during sub-100 ns ESD events per IEC 61000-4-2 Level 4. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J22A-M3/61 | Halogen-free molding compound; identical electrical specs and package; same RoHS compliance. | Required where halogen-free material specification applies (e.g., certain automotive OEM standards). | Select SMA6J22A-M3/61 only if halogen-free certification is mandated; otherwise SMA6J22A-E3/61 satisfies general industrial requirements. |
| SMCJ22A-E3/73 | Same VWM/VBR/VC ratings but in larger SMC (DO-214AB) package; higher RθJA (85 °C/W) and 1500 W PPPM (10/1000 μs). | Better thermal performance and higher surge capacity; suited for higher-power or less space-constrained designs. | Choose SMCJ22A-E3/73 when board layout allows larger footprint and >600 W surge margin is needed; SMA6J22A-E3/61 prioritizes compactness and cost in space-limited applications. |
Compared with SMA6J22A-M3/61, the SMA6J22A-E3/61 offers identical protection performance with standard RoHS compliance, while SMCJ22A-E3/73 delivers enhanced thermal and surge capability at the cost of increased board area-making SMA6J22A-E3/61 optimal for miniaturized 24 V industrial interfaces where footprint and assembly compatibility are critical.
Availability
SMA6J22A-E3/61 is available at Aetrix Electronics and suitable for industrial motor drives, 24 V power rail surge suppression, and sensor signal line ESD protection requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMA6J22A-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 devices, and optoelectronics with emphasis on reliability and application-specific performance.
The SMA6JxxA series is part of Vishay's Transient Voltage Suppressor family, engineered for robust, surface-mount surge protection in harsh industrial and automotive environments where repeatable clamping and thermal stability are essential.
FAQ
What is the maximum clamping voltage of the SMA6J22A-E3/61 under a 10/1000 μs surge?
The SMA6J22A-E3/61 has a maximum clamping voltage (VC) of 34.5 V at a peak pulse current (IPPM) of 17.4 A for a 10/1000 μs waveform. This value is measured under standard test conditions with 5.0 mm × 5.0 mm copper pads per terminal and represents the upper voltage limit imposed on the protected circuit during such a transient event. The SMA6J22A-E3/61 maintains this clamping performance consistently across its qualified operating temperature range.
Is the SMA6J22A-E3/61 suitable for bidirectional transient protection?
No, the SMA6J22A-E3/61 is a unidirectional TVS diode and is not rated for bidirectional operation. Its electrical characteristics-including breakdown voltage, clamping behavior, and leakage-are specified only for reverse-bias (cathode-positive) conditions. For bidirectional protection, a dedicated bidirectional device such as the SMA6J22CA-E3/61 must be used. The SMA6J22A-E3/61 must be oriented correctly on the PCB with the cathode band aligned to the higher-potential side of the protected line.
What is the thermal resistance and how does it affect PCB layout for the SMA6J22A-E3/61?
The SMA6J22A-E3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on PCBs with 5.0 mm × 5.0 mm copper pads per terminal. This value assumes no additional heatsinking and defines how much the junction temperature rises per watt of dissipated power. To maintain safe operation at elevated ambient temperatures, designers must ensure adequate copper area and avoid excessive power cycling. The SMA6J22A-E3/61 datasheet specifies this pad layout as the minimum recommended for rated performance.
Does the SMA6J22A-E3/61 meet lead-free reflow requirements?
Yes, the SMA6J22A-E3/61 meets lead-free reflow requirements with a maximum peak temperature of 260 °C, complying with J-STD-020 MSL level 1. Its matte tin-plated terminals are solderable per J-STD-002 and JESD 22-B102, and it passes JESD 201 class 2 whisker testing. These qualifications confirm suitability for standard Pb-free reflow profiles used in modern SMT assembly lines without risk of delamination or intermetallic degradation. The SMA6J22A-E3/61 is fully RoHS-compliant.
How does the leakage current of the SMA6J22A-E3/61 impact low-power sensor circuits?
The SMA6J22A-E3/61 exhibits ≤0.2 μA reverse leakage current (ID) at its 22 V stand-off voltage (VWM), measured at 25 °C. This ultra-low leakage ensures negligible loading on high-impedance sensor signal paths or battery-backed monitoring circuits, avoiding measurement drift or premature battery depletion. At elevated temperatures (e.g., 85 °C), leakage remains well below 1 μA, preserving accuracy in thermally demanding environments. The SMA6J22A-E3/61 thus supports precision analog integrity without compromising protection function.
SMA6J22A-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):
- 22V
- Voltage - Breakdown (Min):
- 24.4V
- Voltage - Clamping (Max) @ Ipp:
- 40.4V
- Current - Peak Pulse (10/1000µs):
- 89A (8/20µs)
- Power - Peak Pulse:
- 4000W (4kW)
- 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)
SMA6J22A-E3/61 FAQ
1.How can I place an order for SMA6J22A-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6J22A-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 SMA6J22A-E3/61 reliable?
The price and inventory of SMA6J22A-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 SMA6J22A-E3/61 is usually 5 days.
3.What payment methods are accepted for SMA6J22A-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6J22A-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6J22A-E3/61?
SMA6J22A-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6J22A-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 SMA6J22A-E3/61?
For technical support, including SMA6J22A-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6J22A-E3/61 requirements.
6.How does Aetrix verify that SMA6J22A-E3/61 is sourced from the original manufacturer or authorized distributors?
All SMA6J22A-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 SMA6J22A-E3/61 meets industry standards.
7.What is the process for return or replacement of SMA6J22A-E3/61?
All SMA6J22A-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA6J22A-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 SMA6J22A-E3/61 part is unused and in its original packaging.
Return procedure for SMA6J22A-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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