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Vishay General Semiconductor - Diodes Division SMA6J8.0A-M3/5A
- Part No.:
- SMA6J8.0A-M3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA6J8.0A-M3/5A.pdf
- Description:
- TVS DIODE 8VWM 12.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,906
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Product details
Overview
SMA6J8.0A-M3/5A from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping transient overvoltages 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 at 48.0 A (10/1000 μs), 600 W peak pulse power rating, and operates across –55 °C to +150 °C junction temperature range - used to protect MOSFETs, ICs, and sensor signal lines in industrial power supplies.
For engineers reviewing the SMA6J8.0A-M3/5A datasheet, SMA6J8.0A-M3/5A pinout, SMA6J8.0A-M3/5A application, or SMA6J8.0A-M3/5A equivalent, key selection criteria include clamping voltage at rated surge current, unidirectional polarity, MSL level 1 compliance, halogen-free RoHS status (M3 suffix), and thermal resistance (RθJA = 120 °C/W) for PCB-level transient protection design.
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 reverse voltage exceeds VBR (8.89–9.83 V), limiting transient energy with dynamic resistance of 0.056 Ω. Its 600 W (10/1000 μs) and 4000 W (8/20 μs) pulse power ratings reflect dual waveform capability for both slow inductive-switching and fast lightning-induced transients.
The device uses planar junction construction in an SMA (DO-214AC) package with matte tin-plated leads, rated for 260 °C reflow per J-STD-020 MSL level 1, and achieves thermal resistance of 120 °C/W (junction-to-ambient) on standard 5.0 mm × 5.0 mm copper pads - enabling robust surge handling without external heatsinking in space-constrained layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.0 V - Maximum continuous reverse operating voltage before significant leakage; sets upper limit for protected circuit DC rail. |
| VBR (min/max) | 8.89 V / 9.83 V at 1 mA - Confirmed avalanche onset range; ensures reliable triggering above nominal system voltage. |
| VC @ IPP | 12.5 V at 48.0 A (10/1000 μs) - Clamped voltage during worst-case surge; defines maximum stress on downstream components. |
| PPPM (10/1000 μs) | 600 W - Sustained transient energy absorption capacity; validates protection against inductive load switching events. |
| IFSM | 50 A (8.3 ms half-sine) - Surge current tolerance during AC line faults or hot-swap events without failure. |
| TJ max. | +150 °C - Maximum junction temperature; supports operation in enclosed industrial enclosures without derating. |
| RθJA | 120 °C/W - Thermal resistance on standard PCB pad layout; determines required copper area for thermal management. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, unidirectional polarity with cathode band marking. Dimensions: 4.50 mm × 2.79 mm × 2.20 mm (L × W × H); weight 0.064 g; RoHS-compliant and halogen-free (M3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / low-side reference | Connected to ground or lower-potential node; completes clamping path during transient events. |
| Cathode | Reverse-biased input / protected line connection | Connected to power rail or signal line being protected; avalanche conduction occurs here during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional polarity | Enables precise clamping only on negative transients relative to cathode; avoids forward conduction interference in DC-biased lines. |
| MSL level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking; simplifies SMT assembly logistics for high-volume production. |
| Halogen-free & RoHS-compliant (M3) | Meets IPC-1752A environmental compliance requirements for industrial and telecom equipment shipped globally. |
| Low dynamic resistance (0.056 Ω) | Minimizes voltage overshoot during fast transients by reducing I×R drop across the diode during clamping. |
| 120 °C/W RθJA on 5 mm × 5 mm pads | Validates thermal performance using standard PCB copper area - no custom thermal vias or footprints required. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of gate drivers and microcontroller I/O lines from inductive kickback during relay or solenoid switching in PLC cabinets. IC Role / Device Role / Timing Role: Shunt clamping device placed directly at MOSFET gate or MCU pin to clamp sub-100 ns spikes below 12.5 V. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic interfaces while maintaining signal integrity during 50 A coil de-energization. |
Use Scenario: Safeguarding LIN bus transceivers and sensor inputs (e.g., door lock actuators) against battery dump and load-dump transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 12 V supply rail feeding BCUs; activated within <1 ns of transient onset. Use Value: Ensures uninterrupted communication during ISO 7637-2 Pulse 5a (75 V/500 ms) events without resetting microcontrollers or corrupting EEPROM. |
| Telecom Power Supplies | Consumer IoT Sensor Nodes |
Use Scenario: Input-stage surge suppression on 48 V DC-DC converters powering base station radios and remote PHY units. IC Role / Device Role / Timing Role: First-line defense against lightning-induced surges on primary side; coordinated with upstream MOVs. Use Value: Limits let-through voltage to <15 V during 4000 W (8/20 μs) transients, preserving SiC FET gate oxide integrity and feedback optocoupler reliability. |
Use Scenario: ESD and EFT protection on analog sensor inputs (e.g., temperature, humidity) in battery-powered smart home devices. IC Role / Device Role / Timing Role: Low-capacitance (typ. 100 pF at 0 V) shunt element on 3.3 V ADC reference and signal paths. Use Value: Suppresses IEC 61000-4-2 ±8 kV contact discharge without distorting mV-level sensor signals or increasing noise floor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J8.0A-E3/5A | Same electrical specs; RoHS-compliant but not halogen-free (E3 vs. M3 suffix); JESD 201 class 2 whisker test passed for both. | No difference in protection function; E3 variant used where halogen-free requirement is not mandated (e.g., non-EU consumer goods). | Select SMA6J8.0A-M3/5A when compliance with IEC 61249-2-21 or JEDEC J-STD-020 MSL level 1 + halogen-free is contractually required. |
| SMCJ8.0A-M3 | Same VWM/VBR, but SMC (DO-214AB) package: larger footprint (7.11 mm × 6.22 mm), higher PPPM (1500 W @ 10/1000 μs), RθJA = 35 °C/W. | Used where higher surge margin or lower thermal resistance is needed; requires PCB redesign due to larger pad layout. | Choose SMCJ8.0A-M3 only if system-level testing shows 600 W insufficient - e.g., in outdoor telecom cabinets exposed to direct lightning coupling. |
Compared with SMA6J8.0A-E3/5A, the M3 variant adds halogen-free compliance without performance trade-offs; versus SMCJ8.0A-M3, SMA6J8.0A-M3/5A offers identical clamping behavior in 40 % smaller board area - critical for compact power modules and multi-rail sensor hubs.
Availability
SMA6J8.0A-M3/5A is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and telecom power supplies requiring stable component supply, long-term lifecycle support, and halogen-free compliance.
Supply support for SMA6J8.0A-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, precision, and application-specific optimization.
The SMA6J series is part of Vishay's Transient Voltage Suppressor portfolio, engineered for high-energy surge immunity in space-constrained surface-mount applications across industrial, automotive, and communications infrastructure.
FAQ
What is the maximum clamping voltage of the SMA6J8.0A-M3/5A at its rated peak pulse current?
The SMA6J8.0A-M3/5A has a maximum clamping voltage (VC) of 12.5 V at 48.0 A peak pulse current with a 10/1000 μs waveform. This value is measured under standardized test conditions per JEDEC standards and defines the upper voltage limit imposed on protected circuits during surge events. The SMA6J8.0A-M3/5A maintains this clamping performance across its full operating temperature range.
Does the SMA6J8.0A-M3/5A support bidirectional transient suppression?
No, the SMA6J8.0A-M3/5A is a unidirectional TVS diode, meaning it provides clamping only for negative transients relative to its cathode terminal. It does not suppress positive-going transients on the anode side. For bidirectional protection, a separate device such as SMA6J8.0CA-M3/5A would be required. The SMA6J8.0A-M3/5A datasheet explicitly states "Available in unidirectional polarity only."
What does the "M3" suffix indicate in SMA6J8.0A-M3/5A?
"M3" denotes halogen-free, RoHS-compliant construction meeting IPC-1752A material declarations, with matte tin-plated leads qualified to JESD 201 class 2 whisker resistance. It also indicates packaging in 13-inch tape-and-reel (5A code) with 7500 units per reel. The SMA6J8.0A-M3/5A differs from E3-suffix variants solely in halogen content - all electrical and thermal specifications remain identical.
Can the SMA6J8.0A-M3/5A be used in automotive applications requiring AEC-Q200 qualification?
The SMA6J8.0A-M3/5A is not AEC-Q200 qualified. While it meets industrial-grade reliability and operates across –55 °C to +150 °C, Vishay does not list this part under its AEC-Q200-certified TVS portfolio. For automotive-critical systems, designers should select AEC-Q200-qualified alternatives such as the Automotive Grade SMA6J8.0AHE3/5A or consult Vishay's official automotive product matrix before finalizing the SMA6J8.0A-M3/5A in vehicle platforms.
What is the thermal resistance junction-to-ambient for SMA6J8.0A-M3/5A under standard mounting conditions?
The SMA6J8.0A-M3/5A 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, per Vishay Document Number 89460. This value assumes still-air conditions and is critical for estimating temperature rise during sustained power dissipation - for example, at 4 W continuous power, junction temperature rises ~480 °C above ambient, confirming the device is intended for transient-only duty, not steady-state dissipation.
SMA6J8.0A-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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 8V
- Voltage - Breakdown (Min):
- 8.89V
- Voltage - Clamping (Max) @ Ipp:
- 12.5V
- Current - Peak Pulse (10/1000µs):
- 48A
- Power - Peak Pulse:
- 600W
- 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-M3/5A FAQ
1.How can I place an order for SMA6J8.0A-M3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6J8.0A-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 SMA6J8.0A-M3/5A reliable?
The price and inventory of SMA6J8.0A-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 SMA6J8.0A-M3/5A is usually 5 days.
3.What payment methods are accepted for SMA6J8.0A-M3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6J8.0A-M3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6J8.0A-M3/5A?
SMA6J8.0A-M3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6J8.0A-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 SMA6J8.0A-M3/5A?
For technical support, including SMA6J8.0A-M3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6J8.0A-M3/5A requirements.
6.How does Aetrix verify that SMA6J8.0A-M3/5A is sourced from the original manufacturer or authorized distributors?
All SMA6J8.0A-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 SMA6J8.0A-M3/5A meets industry standards.
7.What is the process for return or replacement of SMA6J8.0A-M3/5A?
All SMA6J8.0A-M3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA6J8.0A-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 SMA6J8.0A-M3/5A part is unused and in its original packaging.
Return procedure for SMA6J8.0A-M3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA6J8.0A-M3/5A Tags
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