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Vishay General Semiconductor - Diodes Division SMA6J8.0A-M3/61
- Part No.:
- SMA6J8.0A-M3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA6J8.0A-M3/61.pdf
- Description:
- TVS DIODE 8VWM 12.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMA6J8.0A-M3/61 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, with 8.0 V stand-off voltage (VWM), 8.89–9.83 V breakdown voltage (VBR at IT = 1 mA), and 12.5 V maximum clamping voltage (VC) at 48.0 A peak pulse current (IPP) under 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor signal lines against inductive switching transients in industrial power supplies.
For engineers reviewing the SMA6J8.0A-M3/61 datasheet, SMA6J8.0A-M3/61 pinout, SMA6J8.0A-M3/61 application, or SMA6J8.0A-M3/61 equivalent, key selection criteria include clamping performance at 48 A, thermal resistance (RθJA = 120 °C/W), unidirectional polarity, halogen-free RoHS compliance (M3 suffix), and compatibility with automated SMT placement on PCBs with 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR (8.89–9.83 V), it avalanches to limit transient energy by diverting surge current away from downstream components. Its dynamic resistance (RD = 0.056 Ω) ensures low clamping overshoot during fast 10/1000 μs surges.
Designed for single-polarity protection only, SMA6J8.0A-M3/61 features MSL Level 1 moisture sensitivity, matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and a cathode band marking - requiring correct orientation during layout to avoid reverse-bias failure in DC-coupled circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.0 V - maximum continuous reverse operating voltage before conduction begins; sets upper limit for normal circuit operation. |
| VBR (min/max) | 8.89 V / 9.83 V at IT = 1 mA - defines reliable avalanche onset range; used to verify margin over VWM. |
| VC at IPP | 12.5 V at 48.0 A (10/1000 μs) - clamping voltage seen by protected device during worst-case surge; must be below downstream IC's absolute max rating. |
| PPPM (10/1000 μs) | 600 W - peak pulse power handling capacity; determines survivability of common lightning/inductive transients. |
| ID at VWM | ≤ 20 μA - leakage current at rated stand-off voltage; critical for low-power sensor or battery-backed circuits. |
| TJ max. | +150 °C - maximum junction temperature; enables use in high-ambient industrial environments with proper pad thermal design. |
| RθJA | 120 °C/W - thermal resistance junction-to-ambient; requires ≥5.0 mm × 5.0 mm Cu pads per terminal to achieve rated PD = 4 W at TA = 50 °C. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, halogen-free, RoHS-compliant (M3 suffix), with cathode indicated by color band. Dimensions: 4.50 mm × 2.79 mm × 2.20 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction; tied to system ground or low-side reference in unidirectional TVS configuration | Must connect to lowest potential node in protected path; incorrect anode/cathode routing disables clamping function. |
| Cathode | Current exit point during reverse avalanche; connected to line being protected (e.g., VCC rail or signal trace) | Marked by visible band; reverse-biased during transient events - clamps voltage between cathode and anode to VC. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional polarity | Enables precise DC-biased line protection without forward-conduction interference; avoids false triggering on positive signal swings. |
| Low-profile SMA package | 0.208" × 0.110" footprint supports high-density PCB layouts and automated pick-and-place with standard SMT feeders. |
| Clamping voltage ≤12.5 V at 48 A | Provides tight voltage limiting for 3.3 V/5 V logic rails and automotive microcontrollers with 16 V absolute max ratings. |
| MSL Level 1 rating | Allows unlimited floor life and reflow at 260 °C peak - eliminates baking requirements and simplifies manufacturing flow. |
| Halogen-free & RoHS-compliant (M3) | Meets IPC-1752A material declaration standards and EU Directive 2015/863 for restricted substances in industrial electronics. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of gate drivers and current-sense amplifiers against flyback voltage spikes from brushed DC motor commutation. IC Role / Device Role / Timing Role: Shunt clamping element placed across motor driver output or sense resistor terminals. Use Value: Limits transient voltage to ≤12.5 V during 48 A inductive kick, preventing latch-up or oxide breakdown in 5 V-rated op-amps and half-bridge drivers. | Use Scenario: Safeguarding LIN bus transceivers and microcontroller I/O pins from load-dump and jump-start surges in door module PCBs. IC Role / Device Role / Timing Role: Standoff-connected TVS on LIN data line and VBAT-supply input, referenced to chassis ground. Use Value: Withstands 600 W 10/1000 μs pulses while maintaining <20 μA leakage at 8.0 V - preserving bus idle voltage integrity and sleep-mode current budgets. |
| Consumer Power Adapters | Industrial Sensor Signal Conditioning |
Use Scenario: Secondary-side overvoltage suppression on 5 V/12 V DC outputs of flyback converters powering USB peripherals and displays. IC Role / Device Role / Timing Role: Parallel-connected transient absorber between output rail and GND, downstream of output capacitor. Use Value: Clamps 100 V+ transients to <13 V within 1 ns, preventing damage to LDO regulators and USB interface ICs with 6 V absolute max ratings. | Use Scenario: ESD and EFT protection on analog output lines (e.g., 4–20 mA current loop or 0–10 V DAC outputs) in factory-floor pressure/temperature transmitters. IC Role / Device Role / Timing Role: Low-leakage shunt device on signal line, with cathode tied to signal and anode to system ground. Use Value: Delivers <20 μA leakage at 8.0 V and 12.5 V clamping at 48 A - ensuring signal accuracy remains unaffected while surviving IEC 61000-4-2 ±8 kV contact discharge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J8.0A-E3/61 | Same electrical specs, but RoHS-compliant with lead finish containing trace halogens (E3 suffix); RθJA identical; same MSL Level 1 | No functional difference in protection performance; differs only in material compliance reporting and whisker test class (E3 = Class 1, M3 = Class 2) | Select SMA6J8.0A-E3/61 if halogen content is unrestricted and cost is prioritized; choose SMA6J8.0A-M3/61 for full halogen-free compliance in green electronics programs. |
| SMCJ8.0A-M3 | Higher PPPM (1500 W vs. 600 W), larger SMC (DO-214AB) package, same VWM/VBR/VC specs, RθJA = 35 °C/W (superior thermal performance) | Requires larger PCB area and different pad layout; better suited for higher-energy surges where 600 W is insufficient | Choose SMCJ8.0A-M3 when surge energy exceeds 600 W capability or when board space allows larger package for improved thermal derating. |
Compared with SMA6J8.0A-E3/61, the M3 variant adds halogen-free assurance without sacrificing clamping or thermal behavior; versus SMCJ8.0A-M3, SMA6J8.0A-M3/61 trades power handling for compactness - making it optimal for space-constrained 5–12 V rail protection where 600 W surge immunity suffices.
Availability
SMA6J8.0A-M3/61 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and consumer power adapters requiring stable component supply with halogen-free compliance and automated SMT placement support.
Supply support for SMA6J8.0A-M3/61 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, MOSFETs, and protection devices with emphasis on reliability, precision, and industrial-grade qualification.
The SMA6J series is designed specifically for robust, low-profile transient suppression in high-volume SMT applications - targeting cost-sensitive yet mission-critical protection needs in power supplies, automotive subsystems, and industrial controls.
FAQ
What is the maximum clamping voltage of the SMA6J8.0A-M3/61 under a 10/1000 μs surge?
The SMA6J8.0A-M3/61 has a maximum clamping voltage (VC) of 12.5 V at 48.0 A peak pulse current under the 10/1000 μs waveform. This value is measured per the standard test condition specified in Vishay's datasheet document 89460 and reflects the voltage seen across the device during worst-case transient events - critical for ensuring protected ICs remain within their absolute maximum voltage ratings. The SMA6J8.0A-M3/61 achieves this with a dynamic resistance of 0.056 Ω.
Does the SMA6J8.0A-M3/61 support bidirectional transient suppression?
No, the SMA6J8.0A-M3/61 is a unidirectional TVS diode and does not provide bidirectional protection. It conducts only during reverse-biased overvoltage events - meaning it protects against positive transients on the cathode side relative to the anode. For AC or bipolar signal lines, a separate bidirectional device such as SMBJ8.0CA-M3 would be required. The SMA6J8.0A-M3/61 datasheet explicitly states "Available in unidirectional polarity only".
What is the thermal resistance and recommended PCB layout for the SMA6J8.0A-M3/61?
The SMA6J8.0A-M3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W, achievable only when mounted on PCBs with minimum 5.0 mm × 5.0 mm copper pads per terminal. This layout is mandatory to sustain its 4 W power dissipation rating at TA = 50 °C. Smaller pads increase thermal impedance, risking premature thermal runaway during repeated surges. The SMA6J8.0A-M3/61 package outline and pad recommendations are detailed in Figure "Mounting Pad Layout" on page 4 of datasheet 89460.
How does the M3 suffix differ from E3 in the SMA6J8.0A-M3/61 part number?
The M3 suffix indicates halogen-free, RoHS-compliant construction with JESD 201 Class 2 whisker resistance, whereas E3 denotes RoHS compliance with trace halogens permitted and JESD 201 Class 1. Electrically and thermally, SMA6J8.0A-M3/61 and SMA6J8.0A-E3/61 are identical - same VWM, VBR, VC, PPPM, and RθJA. The distinction lies solely in material composition and compliance reporting, making SMA6J8.0A-M3/61 suitable for strict green electronics mandates.
Can the SMA6J8.0A-M3/61 be used to protect a 3.3 V logic rail?
Yes, the SMA6J8.0A-M3/61 can protect a 3.3 V logic rail - but only when placed on the power supply side (e.g., VDD input) rather than directly on signal lines. Its 8.0 V stand-off voltage (VWM) ensures no conduction during normal operation, while its 12.5 V clamping voltage safely limits transients well above the 3.3 V rail but below the 16 V absolute maximum rating typical of many 3.3 V ICs. For signal-line protection, lower-VWM devices like SMAJ5.0A-M3 would be more appropriate.
SMA6J8.0A-M3/61 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):
- 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-M3/61 FAQ
1.How can I place an order for SMA6J8.0A-M3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6J8.0A-M3/61 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 SMA6J8.0A-M3/61 reliable?
The price and inventory of SMA6J8.0A-M3/61 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-M3/61 is usually 5 days.
3.What payment methods are accepted for SMA6J8.0A-M3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6J8.0A-M3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6J8.0A-M3/61?
SMA6J8.0A-M3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6J8.0A-M3/61 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 SMA6J8.0A-M3/61?
For technical support, including SMA6J8.0A-M3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6J8.0A-M3/61 requirements.
6.How does Aetrix verify that SMA6J8.0A-M3/61 is sourced from the original manufacturer or authorized distributors?
All SMA6J8.0A-M3/61 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 SMA6J8.0A-M3/61 meets industry standards.
7.What is the process for return or replacement of SMA6J8.0A-M3/61?
All SMA6J8.0A-M3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA6J8.0A-M3/61, 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 SMA6J8.0A-M3/61 part is unused and in its original packaging.
Return procedure for SMA6J8.0A-M3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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