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Vishay General Semiconductor - Diodes Division SMA6F30A-M3/H
- Part No.:
- SMA6F30A-M3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
SMA6F30A-M3/H.pdf
- Description:
- 600W,30V 5%,UNIDIR,SLIM SMA TVS
- Quantity:
- Payment:
- Shipping:
Inventory:8,995
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Product details
Overview
SMA6F30A-M3/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) in SlimSMA (DO-221AC) package, designed for clamping voltage transients on power and signal lines. It features 30 V stand-off voltage (VWM), 33.3–36.8 V breakdown voltage (VBR) at 1 mA, 48.4 V maximum clamping voltage (VC) at 12.4 A (10/1000 μs), 600 W peak pulse power, and IEC 61000-4-2 Level 4 ESD protection (15 kV air / 8 kV contact). It protects MOSFETs and ICs in industrial sensor interfaces.
For engineers reviewing the SMA6F30A-M3/H datasheet, SMA6F30A-M3/H pinout, SMA6F30A-M3/H application, or SMA6F30A-M3/H equivalent, key selection criteria include clamping voltage margin relative to protected IC's absolute maximum rating, thermal derating on FR4 PCB, unidirectional polarity alignment with DC bias, and M3 halogen-free RoHS-compliant industrial-grade qualification.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal bias below 30 V, it presents <0.2 μA leakage; during transient overvoltage exceeding 33.3 V, it avalanches to clamp the line at ≤48.4 V. Its dynamic resistance of 0.935 Ω enables rapid response to 10/1000 μs surges up to 12.4 A.
The device uses silicon avalanche junction technology in a low-profile SlimSMA package (max height 0.95 mm), optimized for automated SMT placement and high-density layouts. It meets J-STD-020 MSL Level 1 and JESD201 Class 2 whisker resistance, with operating junction temperature range from –55 °C to +175 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - Maximum continuous reverse working voltage before conduction begins; must exceed system DC rail or signal swing. |
| VBR (min/max) | 33.3 V / 36.8 V at 1 mA - Breakdown onset range; defines minimum overvoltage threshold for clamping activation. |
| VC @ IPP | 48.4 V at 12.4 A (10/1000 μs) - Clamped voltage seen by protected circuit during standard surge; determines safe margin vs. IC abs max rating. |
| PPPM (10/1000 μs) | 600 W - Peak transient energy handling capability; used to size protection for inductive switch-off spikes. |
| ID @ VWM | ≤0.2 μA - Reverse leakage at rated stand-off voltage; negligible loading on low-power sensor or logic lines. |
| TJ max. | +175 °C - Maximum junction temperature; supports operation in high-ambient industrial environments without derating. |
| ESD Rating | IEC 61000-4-2 Level 4: 15 kV air / 8 kV contact - Validates robustness against human-body ESD events in end-user handling. |
Pinout & Package
Package: SlimSMA (DO-221AC), surface-mount, low-profile (0.95 mm typical height), matte tin-plated leads, cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry during forward conduction; connected to lower-potential side of protected line | When used in unidirectional configuration, anode ties to ground or return path; critical for correct polarity orientation. |
| Cathode | Current exit during avalanche clamping; connected to higher-potential side of protected line | Marked by color band; connects to supply rail or signal line needing protection; reverse-biased during normal operation. |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SlimSMA package | 0.95 mm typical height enables use in space-constrained consumer and portable electronics. |
| High peak pulse power | 600 W (10/1000 μs) and 4 kW (8/20 μs) handles both slow inductive spikes and fast lightning surges. |
| Industrial-grade M3 suffix | Halogen-free, RoHS-compliant, JESD201 Class 2 whisker-resistant, qualified per J-STD-020 MSL Level 1. |
| Low clamping ratio | VC/VWM = 48.4 V / 30 V ≈ 1.61 - Tight clamping margin preserves headroom for downstream ICs with 50 V abs max ratings. |
| ESD-hardened construction | Validated to IEC 61000-4-2 Level 4 ensures reliability in field-deployed equipment subject to frequent user contact. |
Applications
| Industrial Sensor Interface | Automotive Body Control Module |
|---|---|
Use Scenario: Protecting analog output lines (e.g., 4–20 mA current loop) from load dump and relay coil flyback in factory automation sensors. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between signal line and ground, clamping transients within 1 ns. Use Value: Prevents latch-up or gate oxide damage in op-amps and ADC drivers by limiting voltage to ≤48.4 V during 10/1000 μs surges up to 12.4 A. | Use Scenario: Safeguarding LIN bus transceivers and microcontroller I/O pins from battery voltage transients during jump-start or alternator load dump. IC Role / Device Role / Timing Role: Standoff-rated TVS on LIN data line (VWM = 30 V > nominal 12 V system), cathode to line, anode to chassis ground. Use Value: Maintains signal integrity by clamping spikes to 48.4 V while adding <0.2 μA leakage-no impact on LIN bus timing or voltage thresholds. |
| Power Supply Input Protection | Consumer USB-C Port ESD Clamp |
Use Scenario: Secondary-side transient suppression on 24 V DC input rails feeding industrial PLC modules exposed to motor drive noise. IC Role / Device Role / Timing Role: Unidirectional TVS across input rail and ground, sized for 600 W 10/1000 μs pulses per IEC 61000-4-4. Use Value: Enables compliance with industrial immunity standards without requiring additional series impedance or filtering components. | Use Scenario: Board-level ESD protection on USB-C CC and VCONN lines in portable audio devices, where height <1 mm is mandatory. IC Role / Device Role / Timing Role: Low-capacitance TVS (CJ not specified but typical for DO-221AC <100 pF) placed directly at connector, cathode to line. Use Value: Provides 15 kV air-gap ESD immunity per IEC 61000-4-2 Level 4 while meeting mechanical envelope constraints of ultra-thin enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6F30A-M3/6B | Same electrical specs; differs only in tape-and-reel packaging code (6B = 14,000 pcs/reel, H = 3,500 pcs/reel); identical SlimSMA package and M3 qualification. | No functional difference; suited for high-volume automated assembly where larger reel quantities reduce changeover frequency. | Select SMA6F30A-M3/6B when optimizing for SMT line efficiency in mass production; SMA6F30A-M3/H remains preferred for prototyping or low-MOQ orders. |
| SMAJ30A-M3 | Higher clamping voltage (VC = 48.4 V → 49.3 V at same IPP), same VWM/VBR, but in larger SMA (DO-214AC) package (1.75 mm height vs. 0.95 mm). | Less suitable for ultra-low-profile designs; thermal resistance RθJA ~140 °C/W (vs. 120–150 °C/W for SlimSMA) limits power handling on small pads. | Choose SMAJ30A-M3 only if existing PCB footprint uses SMA; otherwise SMA6F30A-M3/H delivers superior height and thermal performance in new designs. |
Compared with SMA6F30A-M3/6B, the H-suffix offers smaller reel quantity for flexibility; versus SMAJ30A-M3, SMA6F30A-M3/H provides 46% lower profile and tighter clamping-critical for modern compact industrial and automotive modules.
Availability
SMA6F30A-M3/H is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body control modules, and power supply input protection requiring stable component supply, halogen-free compliance, and MSL Level 1 moisture sensitivity handling.
Supply support for SMA6F30A-M3/H 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 SMA6F series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in space-constrained, high-reliability industrial and automotive systems using low-profile surface-mount packages.
FAQ
What is the maximum clamping voltage of the SMA6F30A-M3/H under a 10/1000 μs surge?
The SMA6F30A-M3/H has a maximum clamping voltage (VC) of 48.4 V when subjected to a 12.4 A peak pulse current with a 10/1000 μs waveform. This value is measured per the conditions defined in the Vishay datasheet Document Number 89458 and represents the upper limit of voltage seen by the protected circuit during such a transient event. The SMA6F30A-M3/H maintains this clamping performance across its specified operating temperature range.
Is the SMA6F30A-M3/H suitable for bidirectional signal line protection?
No, the SMA6F30A-M3/H is a unidirectional TVS diode and is not suitable for bidirectional signal line protection. Its electrical characteristics-including breakdown voltage, clamping behavior, and polarity marking-are defined only for reverse-biased operation. For AC or bidirectional lines (e.g., RS-485, USB D+/D−), a bidirectional variant such as SMA6F30CA-M3/H must be used. The SMA6F30A-M3/H requires correct anode-to-ground/cathode-to-line orientation to function.
What does the "M3" suffix indicate for the SMA6F30A-M3/H?
The "M3" suffix on the SMA6F30A-M3/H denotes Vishay's industrial-grade qualification: halogen-free molding compound, full RoHS compliance, and passing JESD201 Class 2 whisker testing. It also confirms compliance with J-STD-020 Moisture Sensitivity Level 1 (peak reflow temperature 260 °C). These attributes make the SMA6F30A-M3/H appropriate for long-life, high-reliability applications in industrial and automotive environments.
Can the SMA6F30A-M3/H replace SMAJ30A in an existing design?
The SMA6F30A-M3/H is not a direct drop-in replacement for SMAJ30A due to package differences: SMA6F30A-M3/H uses SlimSMA (DO-221AC), while SMAJ30A uses SMA (DO-214AC). The SlimSMA is significantly lower (0.95 mm vs. 1.75 mm) and has different pad layout dimensions. Electrical parameters are closely matched, but PCB redesign is required. The SMA6F30A-M3/H offers improved thermal performance and height reduction-but only with layout adaptation.
What is the leakage current specification for the SMA6F30A-M3/H at its stand-off voltage?
The SMA6F30A-M3/H exhibits a maximum reverse leakage current (ID) of 0.2 μA when biased at its 30 V stand-off voltage (VWM) and tested at 25 °C. This ultra-low leakage ensures minimal loading on high-impedance sensor outputs or battery-powered circuits. The value is confirmed in the Vishay datasheet Table "ELECTRICAL CHARACTERISTICS" for device SMA6F30A and applies identically to the SMA6F30A-M3/H variant.
SMA6F30A-M3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-221AC, SMA Flat Leads
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 30V
- Voltage - Breakdown (Min):
- 33.3V
- Voltage - Clamping (Max) @ Ipp:
- 48.4V
- Current - Peak Pulse (10/1000µs):
- 12.4A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-221AC (SlimSMA)
SMA6F30A-M3/H FAQ
1.How can I place an order for SMA6F30A-M3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6F30A-M3/H 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 SMA6F30A-M3/H reliable?
The price and inventory of SMA6F30A-M3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA6F30A-M3/H is usually 5 days.
3.What payment methods are accepted for SMA6F30A-M3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6F30A-M3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6F30A-M3/H?
SMA6F30A-M3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6F30A-M3/H 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 SMA6F30A-M3/H?
For technical support, including SMA6F30A-M3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6F30A-M3/H requirements.
6.How does Aetrix verify that SMA6F30A-M3/H is sourced from the original manufacturer or authorized distributors?
All SMA6F30A-M3/H 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 SMA6F30A-M3/H meets industry standards.
7.What is the process for return or replacement of SMA6F30A-M3/H?
All SMA6F30A-M3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMA6F30A-M3/H, 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 SMA6F30A-M3/H part is unused and in its original packaging.
Return procedure for SMA6F30A-M3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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