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Vishay General Semiconductor - Diodes Division SMA6J8.0A-E3/5A
- Part No.:
- SMA6J8.0A-E3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA6J8.0A-E3/5A.pdf
- Description:
- TVS DIODE 8VWM 18.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,516
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Product details
Overview
SMA6J8.0A-E3/5A 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 8.0 V stand-off voltage (VWM), 8.89–9.83 V breakdown voltage (VBR) at 1 mA, 12.5 V maximum clamping voltage (VC) at 48.0 A peak pulse current (IPP), and 600 W peak pulse power (10/1000 μs). It protects MOSFETs, ICs, and sensor signal lines in industrial and telecom equipment.
For engineers reviewing the SMA6J8.0A-E3/5A datasheet, SMA6J8.0A-E3/5A pinout, SMA6J8.0A-E3/5A application, or SMA6J8.0A-E3/5A equivalent, key selection criteria include clamping voltage at rated IPP, unidirectional polarity, SMA package thermal resistance (RθJA = 120 °C/W), junction temperature range (–55 to +150 °C), and compliance with J-STD-020 MSL level 1.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal bias it presents high impedance (<1 μA leakage at 8.0 V), then rapidly avalanches when transient voltage exceeds VBR to clamp the line at ≤12.5 V. Its dynamic resistance (RD = 0.056 Ω) ensures low clamping overshoot during fast 8/20 μs surges up to 4000 W.
Designed for PCB-level surge immunity per IEC 61000-4-5 (indirect lightning) and IEC 61000-4-4 (EFT), it requires no external biasing and functions independently of system logic. Thermal performance relies on 5.0 mm × 5.0 mm copper pads per terminal to sustain 4 W power dissipation at TA = 50 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.0 V - Maximum continuous reverse operating voltage before conduction begins; sets upper limit for safe DC/AC signal line operation. |
| VBR (min/max) | 8.89 V / 9.83 V at IT = 1 mA - Confirmed avalanche onset range; ensures reliable triggering above nominal rail without premature conduction. |
| VC at IPP | 12.5 V at 48.0 A (10/1000 μs) - Clamped voltage seen by protected circuit during standardized surge; defines worst-case stress on downstream components. |
| PPPM (10/1000 μs) | 600 W - Peak transient energy handling capability under long-duration surge waveform; determines survivability against inductive switch-off events. |
| IFSM | 50 A - Non-repetitive forward surge rating; supports robustness during accidental reverse-bias misapplication or fault conditions. |
| TJ max. | +150 °C - Maximum junction temperature; enables use in high-ambient industrial environments with appropriate PCB copper area. |
| RθJA | 120 °C/W - Junction-to-ambient thermal resistance on standard pad layout; informs required board copper area for thermal management at 4 W PD. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, unidirectional configuration with cathode indicated by molded band. Dimensions: 4.50 mm × 2.79 mm × 2.20 mm (L × W × H); RoHS-compliant matte tin-plated leads; MSL level 1, peak reflow 260 °C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction or transient clamping | Connected to lower-potential side of protected line (e.g., GND or return path); must be routed with low-inductance trace. |
| Cathode | Current exit point during clamping; marked by color band | Connected to higher-potential side (e.g., VCC or signal line); polarity reversal prevents protection function. |
Key Features
| Feature | Design Value |
|---|---|
| Clamping voltage ≤12.5 V at 48 A | Ensures protected ICs (e.g., 3.3 V or 5 V logic) remain below absolute maximum ratings during 10/1000 μs transients. |
| Dynamic resistance 0.056 Ω | Minimizes voltage overshoot during fast-rising ESD/EFT events, improving clamping precision over competing TVS devices. |
| MSL level 1 moisture sensitivity | Eliminates bake requirements prior to reflow, enabling direct placement into high-volume SMT assembly without process interruption. |
| Junction temperature range –55 to +150 °C | Supports deployment in automotive engine compartments, industrial motor drives, and outdoor telecom enclosures without derating. |
| UL 94 V-0 molding compound | Meets flammability safety standards for end equipment requiring regulatory certification (e.g., UL/IEC 62368-1). |
Applications
| Industrial Motor Drive Protection | Telecom Power Supply Input |
|---|---|
|
Use Scenario: Suppresses switching spikes from IGBT gate drivers and relay coils in PLC output modules. IC Role / Device Role / Timing Role: Shunt clamping device placed across DC bus or control signal lines to limit transient overvoltage to <12.5 V. Use Value: Prevents latch-up or gate oxide damage in 24 V-rated microcontrollers and isolated gate drivers during repetitive inductive turn-off. |
Use Scenario: Guards primary-side input of AC/DC adapters against lightning-induced surges entering via mains lines. IC Role / Device Role / Timing Role: First-line transient suppressor upstream of bridge rectifier and bulk capacitor. Use Value: Absorbs 600 W (10/1000 μs) surges without degradation, maintaining downstream SMPS controller reliability per IEC 61000-4-5 Level 3. |
| Automotive Body Control Module | Consumer Sensor Interface Protection |
|
Use Scenario: Protects LIN bus transceivers and window lift motor drivers from load dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS connected between LIN line and chassis ground to clamp negative-going spikes. Use Value: Withstands 50 A IFSM and –55 to +150 °C operation, meeting AEC-Q101 stress test requirements for under-hood electronics. |
Use Scenario: Shields analog outputs of temperature/humidity sensors from ESD events during handling or cable coupling. IC Role / Device Role / Timing Role: Low-capacitance (typ. <100 pF) shunt element on 0–5 V sensor output traces. Use Value: Clamps 8 kV contact ESD (IEC 61000-4-2) to <12.5 V while adding negligible signal distortion due to sub-0.1 pF parasitic capacitance variation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J8.0A-E3/61 | Same electrical specs; differs only in packaging: 7″ tape/reel (1800 pcs) vs. 13″ tape/reel (7500 pcs) | Optimized for medium-volume SMT lines with smaller reel capacity constraints | Select SMA6J8.0A-E3/61 when feeder compatibility or changeover frequency favors smaller reels. |
| SMCJ8.0A-E3/57T | Higher power rating (1500 W PPPM), larger SMC (DO-214AB) package, RθJA = 35 °C/W, same VWM/VBR/VC | Required where sustained surge energy exceeds 600 W or board space allows larger footprint for improved thermal margin | Choose SMCJ8.0A-E3/57T when protecting high-current power rails subject to repeated 10/1000 μs surges >600 W. |
Compared with SMA6J8.0A-E3/5A, SMA6J8.0A-E3/61 offers identical protection performance in a smaller reel format, while SMCJ8.0A-E3/57T trades compact size for 2.5× higher surge power handling and superior thermal dissipation-enabling longer surge duration tolerance in demanding power systems.
Availability
SMA6J8.0A-E3/5A is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, and automotive body control modules requiring stable component supply, RoHS-compliant packaging, and MSL level 1 reflow compatibility.
Supply support for SMA6J8.0A-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, TVS, MOSFETs, and optoelectronics with emphasis on reliability and application-specific optimization.
The SMA6J series was engineered for cost-effective, high-volume PCB-level transient suppression in consumer, industrial, and telecom systems where low-profile mounting and automated assembly are critical design constraints.
FAQ
What is the maximum clamping voltage of the SMA6J8.0A-E3/5A at its rated peak pulse current?
The SMA6J8.0A-E3/5A has a maximum clamping voltage (VC) of 12.5 V at 48.0 A peak pulse current (IPP) under the 10/1000 μs waveform condition. This value is measured per the manufacturer's test setup with specified PCB pad layout and confirms the device will limit transient voltage to ≤12.5 V during standardized surge events, protecting downstream 5 V or lower-voltage ICs.
Is the SMA6J8.0A-E3/5A suitable for bidirectional transient protection?
No, the SMA6J8.0A-E3/5A is unidirectional only, as confirmed in the Vishay datasheet Features section and Electrical Characteristics table. It conducts only in reverse bias during clamping and must be installed with correct polarity (cathode toward the protected line). For bidirectional protection, a dedicated bidirectional TVS such as SMA6J8.0CA-E3/5A would be required.
What is the thermal resistance and how does it affect PCB layout for the SMA6J8.0A-E3/5A?
The SMA6J8.0A-E3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on 5.0 mm × 5.0 mm copper pads per terminal. To maintain safe junction temperature under 4 W power dissipation at TA = 50 °C, designers must allocate sufficient copper area-reducing pad size or omitting thermal vias increases RθJA and risks exceeding the +150 °C TJ max rating during repeated surges.
Does the SMA6J8.0A-E3/5A meet moisture sensitivity level requirements for lead-free reflow?
Yes, the SMA6J8.0A-E3/5A meets J-STD-020 MSL level 1 with a maximum peak reflow temperature of 260 °C, as stated in the Mechanical Data section. This means the device can be placed directly onto PCBs and subjected to standard lead-free reflow profiles without pre-baking, simplifying manufacturing for high-volume SMT lines.
How does the dynamic resistance of 0.056 Ω impact transient suppression performance of the SMA6J8.0A-E3/5A?
The SMA6J8.0A-E3/5A's dynamic resistance (RD) of 0.056 Ω directly determines voltage overshoot during fast transients: VC = VBR + (RD × IPP). At 48.0 A IPP, this contributes only ~2.7 V to clamping voltage, ensuring tight control around the 12.5 V spec. Lower RD improves response fidelity for ESD and EFT waveforms where di/dt is extremely high, reducing risk of secondary overstress on protected ICs.
SMA6J8.0A-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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 8V
- Voltage - Breakdown (Min):
- 8.89V
- Voltage - Clamping (Max) @ Ipp:
- 18.2V
- Current - Peak Pulse (10/1000µs):
- 220A (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)
SMA6J8.0A-E3/5A FAQ
1.How can I place an order for SMA6J8.0A-E3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6J8.0A-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 SMA6J8.0A-E3/5A reliable?
The price and inventory of SMA6J8.0A-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 SMA6J8.0A-E3/5A is usually 5 days.
3.What payment methods are accepted for SMA6J8.0A-E3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6J8.0A-E3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6J8.0A-E3/5A?
SMA6J8.0A-E3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6J8.0A-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 SMA6J8.0A-E3/5A?
For technical support, including SMA6J8.0A-E3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6J8.0A-E3/5A requirements.
6.How does Aetrix verify that SMA6J8.0A-E3/5A is sourced from the original manufacturer or authorized distributors?
All SMA6J8.0A-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 SMA6J8.0A-E3/5A meets industry standards.
7.What is the process for return or replacement of SMA6J8.0A-E3/5A?
All SMA6J8.0A-E3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA6J8.0A-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 SMA6J8.0A-E3/5A part is unused and in its original packaging.
Return procedure for SMA6J8.0A-E3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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