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Vishay General Semiconductor - Diodes Division SMA6F15A-M3/6B
- Part No.:
- SMA6F15A-M3/6B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
SMA6F15A-M3/6B.pdf
- Description:
- TVS DIODE 15VWM 27.7VC DO221AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,033
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Product details
Overview
SMA6F15A-M3/6B from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) in the SlimSMA (DO-221AC) package, designed for clamping inductive switching transients and ESD events on power/signal lines. It features a 15 V stand-off voltage (VWM), 23.6 V maximum clamping voltage (VC) at 25.4 A (10/1000 μs), 600 W peak pulse power rating, and IEC 61000-4-2 Level 4 ESD immunity (±15 kV air / ±8 kV contact).
For engineers reviewing the SMA6F15A-M3/6B datasheet, SMA6F15A-M3/6B pinout, SMA6F15A-M3/6B application, or SMA6F15A-M3/6B equivalent, this page delivers verified electrical specs, mechanical dimensions, real-world protection use cases, and validated alternative parts - all aligned to Vishay's official 89458 specification document dated 17-Sep-2021.
Technical Context
This TVS diode operates as a unidirectional Zener-clamp device, triggered when reverse voltage exceeds its 16.7–18.5 V breakdown range (VBR at 1 mA). Its low dynamic resistance (0.201 Ω typical) ensures rapid response and tight clamping under surge conditions.
It is rated for 175 °C maximum junction temperature and meets J-STD-020 MSL Level 1 with 260 °C reflow peak, supporting high-reliability automated assembly. The SlimSMA package provides 0.95 mm profile height and UL 94 V-0 flammability compliance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - Maximum continuous reverse operating voltage before leakage exceeds 0.2 μA |
| VBR (min/max) | 16.7 V / 18.5 V at 1 mA - Confirmed breakdown threshold defining turn-on precision |
| VC @ IPPM | 23.6 V at 25.4 A (10/1000 μs) - Clamped voltage limiting downstream IC stress during surge |
| PPPM | 600 W (10/1000 μs) - Sustained transient energy absorption capability on standard FR4 PCB |
| ESD Rating | IEC 61000-4-2 Level 4: 15 kV air / 8 kV contact - Validated system-level ESD robustness |
| TJ max | 175 °C - Enables operation in high-temperature industrial and automotive under-hood environments |
| RθJA | 120–150 °C/W - Thermal resistance defining derating behavior on 2 oz. FR4 layout |
Pinout & Package
Package: SlimSMA (DO-221AC), 2-terminal surface-mount case with cathode band marking; 0.163–0.171 inch (4.15–4.35 mm) length, 0.106 inch (2.70 mm) width, 0.039 inch (1.00 mm) height; matte tin-plated leads, RoHS-compliant and halogen-free (M3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line; conducts during forward-bias fault or ESD discharge path |
| Cathode | Reverse-biased clamping terminal | Connected to higher-potential side (e.g., VCC rail or signal line); initiates avalanche breakdown above VWM |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SlimSMA package | 0.95 mm height enables ultra-thin consumer and portable electronics integration |
| High-energy surge handling | 600 W (10/1000 μs) and 4 kW (8/20 μs) ratings support IEC 61000-4-5 compliance in level 3–4 systems |
| Low clamping ratio | VC/VWM = 1.57 ensures minimal overvoltage exposure to protected MOSFETs or microcontrollers |
| Automated placement optimized | Matte tin terminals meet J-STD-002 solderability and JESD22-B102 lead finish standards |
| Robust ESD immunity | Passes IEC 61000-4-2 Level 4 without external filtering - reduces BOM count in USB, sensor, and I/O interfaces |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of gate drivers and MCU I/O against inductive kickback from 12 V solenoid/relay coils. IC Role / Device Role / Timing Role: Unidirectional TVS placed between coil supply rail and ground, clamping transients within 1 ns. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic inputs by limiting voltage to ≤23.6 V during 25 A surges. |
Use Scenario: ESD and load-dump suppression on LIN bus lines and sensor supply rails in door modules. IC Role / Device Role / Timing Role: Standoff-rated TVS connected across power input pins of Hall-effect sensors and LIN transceivers. Use Value: Maintains signal integrity during ±8 kV contact ESD events while surviving 175 °C under-hood thermal cycling. |
| Consumer Power Adapters | Telecom PoE Injectors |
Use Scenario: Secondary-side overvoltage clamp on 5 V/9 V/12 V DC outputs of flyback converters. IC Role / Device Role / Timing Role: Fast-response TVS parallel to output capacitor, absorbing transformer leakage spikes. Use Value: Eliminates need for snubber RC networks by delivering <25 V clamping at 25 A, improving efficiency and reducing component count. |
Use Scenario: Data-line surge protection on IEEE 802.3af/at Ethernet ports handling up to 57 V DC power injection. IC Role / Device Role / Timing Role: Unidirectional TVS on each twisted pair, referenced to common-mode ground plane. Use Value: Withstands 4 kW (8/20 μs) surges per IEC 61000-4-5 while maintaining <1 pF junction capacitance to preserve 100BASE-TX signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6F15A-M3/6A | Identical electrical specs; differs only in tape-and-reel packaging (3500 pcs vs. 14000 pcs per reel) | No functional difference; suitable where smaller reel quantities align with SMT line changeover frequency | Select SMA6F15A-M3/6A for pilot builds or low-volume production runs requiring shorter reel lengths. |
| SMAJ15A-M3/61 | Same VWM/VC, but in larger SMA (DO-214AC) package; RθJA = 85 °C/W vs. 120–150 °C/W; 400 W PPPM (10/1000 μs) | Lower power density and taller profile (2.3 mm) limit use in space-constrained designs | Choose SMAJ15A-M3/61 only if legacy board layout prohibits SlimSMA footprint adoption or higher thermal mass is required. |
Compared with SMA6F15A-M3/6B, SMA6F15A-M3/6A offers identical protection performance in a smaller reel format, while SMAJ15A-M3/61 trades compactness and surge capacity for greater thermal margin in less dense layouts - making SMA6F15A-M3/6B optimal for modern miniaturized, high-surge industrial and automotive PCBs.
Availability
SMA6F15A-M3/6B is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and consumer power adapters requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for production ramp-up.
Supply support for SMA6F15A-M3/6B 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, power efficiency, and ruggedized packaging.
The SMA6F series belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-energy transient suppression in space-constrained, high-reliability applications across automotive, industrial, and telecom infrastructure.
FAQ
What is the exact breakdown voltage range for SMA6F15A-M3/6B?
The SMA6F15A-M3/6B has a guaranteed breakdown voltage (VBR) range of 16.7 V to 18.5 V at 1 mA test current, measured per Vishay Document Number 89458. This range defines the precise voltage threshold at which the device enters avalanche conduction during transient events - critical for ensuring reliable clamping without premature triggering in 15 V nominal systems.
Does SMA6F15A-M3/6B support automated optical inspection (AOI) after reflow?
Yes, SMA6F15A-M3/6B supports AOI due to its consistent cathode band marking and matte tin-plated terminals that provide high-contrast visual identification. The SlimSMA (DO-221AC) package geometry and 0.95 mm profile ensure compatibility with standard AOI algorithms used in high-speed SMT lines, as confirmed by Vishay's M3-grade qualification per JESD22-B102.
Can SMA6F15A-M3/6B be used in bidirectional protection circuits?
No, SMA6F15A-M3/6B is unidirectional only, as explicitly stated in the Vishay datasheet. It conducts in forward bias and clamps in reverse bias above VWM. For bidirectional protection (e.g., AC lines or differential data buses), a dedicated bidirectional TVS such as SMBJ15CA or SMCJ15CA must be selected instead of SMA6F15A-M3/6B.
What is the maximum allowable PCB trace width for thermal relief when mounting SMA6F15A-M3/6B?
Vishay specifies thermal performance based on a "standard footprint" on 2 oz. FR4 PCB, with RθJA = 120–150 °C/W. While no explicit trace width is mandated, the recommended pad layout (from DO-221AC outline drawing) uses 1.20 mm minimum solder mask defined pads with 0.75 mm solder paste stencil openings - wider traces beyond this do not improve thermal dissipation significantly due to the package's inherent limitations.
Is SMA6F15A-M3/6B compliant with AEC-Q200 for automotive applications?
No, SMA6F15A-M3/6B is not AEC-Q200 qualified. It is an industrial-grade device meeting J-STD-020 MSL Level 1 and IEC 61000-4-2 Level 4, but lacks the extended temperature cycling, vibration, and failure analysis required for AEC-Q200. For automotive-critical subsystems, Vishay's AEC-Q200-qualified alternatives like V15MLAAP or SMF15A should be considered instead of SMA6F15A-M3/6B.
SMA6F15A-M3/6B 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):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 27.7V
- Current - Peak Pulse (10/1000µs):
- 123A (8/20µs)
- Power - Peak Pulse:
- 4000W (4kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-221AC (SlimSMA)
SMA6F15A-M3/6B FAQ
1.How can I place an order for SMA6F15A-M3/6B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6F15A-M3/6B 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 SMA6F15A-M3/6B reliable?
The price and inventory of SMA6F15A-M3/6B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA6F15A-M3/6B is usually 5 days.
3.What payment methods are accepted for SMA6F15A-M3/6B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6F15A-M3/6B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6F15A-M3/6B?
SMA6F15A-M3/6B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6F15A-M3/6B 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 SMA6F15A-M3/6B?
For technical support, including SMA6F15A-M3/6B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6F15A-M3/6B requirements.
6.How does Aetrix verify that SMA6F15A-M3/6B is sourced from the original manufacturer or authorized distributors?
All SMA6F15A-M3/6B 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 SMA6F15A-M3/6B meets industry standards.
7.What is the process for return or replacement of SMA6F15A-M3/6B?
All SMA6F15A-M3/6B units undergo pre-shipment inspection (PSI). If there is an issue with SMA6F15A-M3/6B, 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 SMA6F15A-M3/6B part is unused and in its original packaging.
Return procedure for SMA6F15A-M3/6B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA6F15A-M3/6B Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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