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Vishay General Semiconductor - Diodes Division SMA6F64A-M3/H
- Part No.:
- SMA6F64A-M3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
SMA6F64A-M3/H.pdf
- Description:
- 600W,64V 5%,UNIDIR,SLIM SMA TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,890
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Product details
Overview
SMA6F64A-M3/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SlimSMA (DO-221AC) package, designed for clamping voltage transients on power and signal lines. It features 64 V stand-off voltage (VWM), 71.1–78.6 V breakdown voltage (VBR) at 1 mA, 103 V maximum clamping voltage (VC) at 5.8 A (10/1000 μs), 600 W peak pulse power rating, and IEC 61000-4-2 Level 4 ESD protection (15 kV air / 8 kV contact). It is used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies and telecom line cards.
For engineers reviewing the SMA6F64A-M3/H datasheet, SMA6F64A-M3/H pinout, SMA6F64A-M3/H application, or SMA6F64A-M3/H equivalent, key selection criteria include clamping performance under 10/1000 μs surge, thermal resistance (RθJA = 120–150 °C/W), unidirectional polarity, M3 halogen-free RoHS-compliant construction, and SlimSMA footprint compatibility with automated SMT placement.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VWM (64 V), it avalanches at VBR (min. 71.1 V), limiting transient energy via low dynamic resistance (RD = 4.21 Ω) to hold VC ≤ 103 V at 5.8 A. Its unidirectional architecture blocks only reverse surges, preserving forward-biased circuit operation.
Thermally, it supports junction temperatures from –55 °C to +175 °C, with power derating above TA = 25 °C per JEDEC 51-2A (FR4 PCB, 2 oz. copper). The SlimSMA package enables low-profile mounting (0.95 mm typical height) and meets MSL level 1 reflow requirements (260 °C peak).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 64 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR (min/max) | 71.1 V / 78.6 V at 1 mA - Ensures reliable avalanche turn-on within defined tolerance band |
| VC @ IPPM | 103 V at 5.8 A (10/1000 μs) - Limits worst-case transient voltage seen by protected downstream IC |
| PPPM (10/1000 μs) | 600 W - Sustains standardized lightning-surge energy without failure |
| ESD Rating | IEC 61000-4-2 Level 4: 15 kV air / 8 kV contact - Validates robustness against human-body ESD events |
| RθJA | 120–150 °C/W - Determines required PCB copper area and ambient temperature margin for thermal reliability |
| Package | SlimSMA (DO-221AC) - 0.95 mm profile enables high-density layout; matte tin leads ensure J-STD-002 solderability |
Pinout & Package
SlimSMA (DO-221AC) package: surface-mount, unidirectional, cathode indicated by color band. Dimensions: 4.15–4.35 mm length × 2.50–2.70 mm width × 0.95 mm height. Matte tin-plated terminals meet J-STD-002 and JESD22-B102 solderability standards; M3 suffix confirms JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current path terminal | Connected to lower-potential side of protected line; defines unidirectional conduction direction |
| Cathode | Avalanche clamping terminal | Marked with color band; connected to higher-potential side; conducts during overvoltage to clamp to VC |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SlimSMA package | 0.95 mm typical height enables use in space-constrained consumer and telecom modules |
| High-energy clamping | 600 W (10/1000 μs) and 4 kW (8/20 μs) ratings support IEC 61000-4-5 surge immunity compliance |
| ESD-hardened construction | Passes IEC 61000-4-2 Level 4 - eliminates need for additional discrete ESD protection on exposed ports |
| M3 qualification | Halogen-free, RoHS-compliant, and JESD201 Class 2 whisker-resistant - ensures long-term reliability in industrial environments |
| MSL Level 1 | Reflow-compatible up to 260 °C peak - supports standard lead-free assembly without moisture sensitivity concerns |
Applications
| Industrial Power Supply Protection | Telecom Line Card Surge Suppression |
|---|---|
Use Scenario: Protecting DC-DC converter inputs and outputs against load-dump and inductive switching transients in factory automation controllers. IC Role / Device Role / Timing Role: Shunt clamping device placed across input rail or MOSFET drain-source to limit voltage excursions during fault conditions. Use Value: Prevents latch-up or gate oxide damage in 65 V-rated power MOSFETs by clamping transients to ≤103 V at 5.8 A. |
Use Scenario: Safeguarding Ethernet PHY interface power rails and data lines from lightning-induced surges in outdoor base station line cards. IC Role / Device Role / Timing Role: Primary transient suppressor on 48 V bias rail and secondary protection on differential signal pairs. Use Value: Enables compliance with IEC 61000-4-5 Level 3 (1 kV line-earth) while maintaining signal integrity due to low junction capacitance. |
| Automotive Body Control Module (BCM) | Consumer Sensor Interface Protection |
Use Scenario: Securing LIN bus transceivers and microcontroller I/O pins against battery reverse-connection and load-dump events in BCM subassemblies. IC Role / Device Role / Timing Role: Unidirectional TVS placed between LIN line and ground to absorb negative-going transients without affecting normal communication. Use Value: Maintains functional safety by preventing false triggering or permanent damage during ISO 7637-2 Pulse 1/2a/5a events. |
Use Scenario: Shielding MEMS accelerometer and temperature sensor analog outputs from ESD and board-level coupling noise in smart home hubs. IC Role / Device Role / Timing Role: Localized clamping element mounted directly at sensor connector or ADC input pin. Use Value: Eliminates need for external RC filters by providing <1 ns response time and 8 kV contact ESD immunity per IEC 61000-4-2. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6F64A-M3/6B | Same electrical specs; differs only in tape-and-reel packaging (14,000 pcs/reel vs. 3,500 pcs/reel) and package code "6B" instead of "H" | No functional difference; "6B" variant intended for high-volume automated placement requiring larger reels | Select SMA6F64A-M3/H for medium-batch production or prototyping where 7" reel size aligns with SMT feeder constraints. |
| SMAJ64A-M3/5B | Higher RθJA (150 °C/W vs. 120–150 °C/W), same VWM/VBR/VC, but in larger SMA (DO-214AC) package (2.3 mm height) | Less suitable for ultra-thin designs; better thermal mass for sustained surge duty cycles | Choose SMAJ64A-M3/5B only if board layout allows taller profile and thermal management requires higher steady-state power dissipation. |
Compared with SMA6F64A-M3/H, the SMA6F64A-M3/6B offers identical protection performance in a different reel format, while SMAJ64A-M3/5B trades height for improved thermal handling-making SMA6F64A-M3/H optimal for space-constrained, high-density layouts needing verified 0.95 mm profile and MSL Level 1 compatibility.
Availability
SMA6F64A-M3/H is available at Aetrix Electronics and suitable for industrial power supplies, telecom line cards, automotive body control modules, and consumer sensor interfaces requiring stable component supply and consistent M3-grade material compliance.
Supply support for SMA6F64A-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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The SMA6F series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in compact surface-mount form factors across industrial, telecom, and automotive systems.
FAQ
What is the clamping voltage of SMA6F64A-M3/H under a 10/1000 μs surge?
The SMA6F64A-M3/H has a maximum clamping voltage (VC) of 103 V at 5.8 A under a 10/1000 μs waveform. This value is measured per standard test conditions (TA = 25 °C) and reflects the upper limit of voltage imposed on the protected circuit during that surge event. Designers must verify system margin relative to this VC using actual expected surge current levels and the device's RD (4.21 Ω) and VBR max (78.6 V) per the formula VC = RD × IPP + VBR max. The SMA6F64A-M3/H maintains this clamping performance across its qualified operating temperature range.
Is SMA6F64A-M3/H suitable for bidirectional transient protection?
No, SMA6F64A-M3/H is a unidirectional TVS diode and provides protection only against reverse-polarity transients. It does not suppress positive-going surges on grounded lines or AC-coupled signals. For bidirectional protection, a separate device such as SMA6F64CA-M3/H (center-tapped, bidirectional variant) or dual-series configuration would be required. The SMA6F64A-M3/H datasheet explicitly states "Unidirectional only" under FEATURES, and polarity is marked by a cathode band - confirming single-direction functionality. Using SMA6F64A-M3/H in bidirectional applications risks failure during forward surges.
What does the "H" suffix in SMA6F64A-M3/H indicate?
Per Vishay's ordering information, the "H" suffix in SMA6F64A-M3/H denotes the preferred package code for tape-and-reel delivery of SMA6F22A through SMA6F130A devices, specifying a 7-inch diameter plastic tape and reel containing 3,500 units. It is not a functional or electrical variant - all electrical, thermal, and mechanical specifications of SMA6F64A-M3/H match those of SMA6F64A-M3/6B or SMA6F64A-M3/I. The "H" identifies logistics formatting only; the SMA6F64A-M3/H remains functionally identical to other M3-suffixed variants in the same voltage grade.
Does SMA6F64A-M3/H meet automotive AEC-Q200 requirements?
No, SMA6F64A-M3/H is not AEC-Q200 qualified. It is specified for industrial, telecom, and consumer applications and carries no automotive qualification documentation. While its operating junction temperature range (–55 °C to +175 °C) overlaps with AEC-Q200 Grade 1 (–40 °C to +125 °C), qualification requires full stress testing including temperature cycling, humidity bias, and mechanical shock - none of which are claimed or documented for SMA6F64A-M3/H. For automotive use, designers must select an AEC-Q200-qualified alternative such as the Automotive Grade SMA6F64AHE3/5B, not the standard SMA6F64A-M3/H.
How does the SlimSMA (DO-221AC) package of SMA6F64A-M3/H compare thermally to standard SMA (DO-214AC)?
The SlimSMA (DO-221AC) package of SMA6F64A-M3/H exhibits higher thermal resistance than standard SMA (DO-214AC): RθJA is 120–150 °C/W versus ~100 °C/W for SMA-packaged equivalents like SMAJ64A-M3/5B. This results from reduced copper pad area and thinner mold compound in the low-profile design. Consequently, SMA6F64A-M3/H requires more aggressive PCB copper pour or lower ambient temperatures to maintain TJ ≤ 175 °C under sustained power dissipation. Its thermal advantage lies in reflow compatibility (MSL Level 1, 260 °C peak), not steady-state cooling - making SMA6F64A-M3/H ideal for space-limited, high-mix SMT lines rather than high-power continuous-duty roles.
SMA6F64A-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):
- 64V
- Voltage - Breakdown (Min):
- 71.1V
- Voltage - Clamping (Max) @ Ipp:
- 103V
- Current - Peak Pulse (10/1000µs):
- 5.8A
- 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)
SMA6F64A-M3/H FAQ
1.How can I place an order for SMA6F64A-M3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6F64A-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 SMA6F64A-M3/H reliable?
The price and inventory of SMA6F64A-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 SMA6F64A-M3/H is usually 5 days.
3.What payment methods are accepted for SMA6F64A-M3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6F64A-M3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6F64A-M3/H?
SMA6F64A-M3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6F64A-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 SMA6F64A-M3/H?
For technical support, including SMA6F64A-M3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6F64A-M3/H requirements.
6.How does Aetrix verify that SMA6F64A-M3/H is sourced from the original manufacturer or authorized distributors?
All SMA6F64A-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 SMA6F64A-M3/H meets industry standards.
7.What is the process for return or replacement of SMA6F64A-M3/H?
All SMA6F64A-M3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMA6F64A-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 SMA6F64A-M3/H part is unused and in its original packaging.
Return procedure for SMA6F64A-M3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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