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Vishay General Semiconductor - Diodes Division SMA6F16A-M3/6B
- Part No.:
- SMA6F16A-M3/6B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
SMA6F16A-M3/6B.pdf
- Description:
- TVS DIODE 16VWM 29.5VC DO221AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,038
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Product details
Overview
SMA6F16A-M3/6B 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 16 V stand-off voltage (VWM), 17.8–19.7 V breakdown voltage (VBR at 1 mA), 25.2 V maximum clamping voltage at 10/1000 μs 14.3 A pulse, 600 W peak pulse power, and ESD immunity per IEC 61000-4-2 level 4 (15 kV air / 8 kV contact). It protects MOSFETs and ICs in industrial sensor interfaces.
For engineers reviewing the SMA6F16A-M3/6B datasheet, SMA6F16A-M3/6B pinout, SMA6F16A-M3/6B application, or SMA6F16A-M3/6B equivalent, key selection criteria include unidirectional polarity, SlimSMA footprint compatibility, clamping performance under 10/1000 μs and 8/20 μs surges, thermal derating above 25 °C, and compliance with J-STD-020 MSL level 1 reflow profile.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR (17.8–19.7 V), it avalanches to limit transient energy across protected circuit nodes. Its low dynamic resistance (0.229 Ω typical) ensures rapid response and minimal voltage overshoot during fast transients like ESD or inductive switching spikes.
Designed for automated SMT placement, it uses matte tin-plated leads compliant with J-STD-002 and JESD22-B102, meets UL 94 V-0 flammability rating, and supports junction temperatures from –55 °C to +175 °C. The cathode band denotes polarity, and its SlimSMA package enables high-density PCB layouts with 0.95 mm typical height.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - maximum continuous reverse operating voltage before conduction begins |
| VBR min/max | 17.8 V / 19.7 V at 1 mA - guaranteed avalanche initiation range for reliable clamping threshold |
| VC @ IPPM (10/1000 μs) | 25.2 V at 14.3 A - maximum clamped voltage seen by protected circuit during standard surge test |
| PPPM (10/1000 μs) | 600 W - surge energy handling capacity for long-duration transients like load dump |
| PPPM (8/20 μs) | 4000 W - higher short-duration surge capability for lightning-induced events |
| ID @ VWM | 0.2 μA max - negligible leakage current ensuring minimal standby power loss |
| TJ max | +175 °C - extended thermal margin enabling use in high-temperature industrial environments |
Pinout & Package
Package: SlimSMA (DO-221AC), surface-mount, unidirectional, cathode indicated by color band. Dimensions: 4.35 mm × 2.70 mm × 0.95 mm (L × W × H), MSL level 1, halogen-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to lower-potential side of protected line; defines unidirectional clamping direction |
| Cathode | Current exit terminal during reverse avalanche | Marked with color band; connected to higher-potential side (e.g., VCC or signal line) to shunt transients to ground |
Key Features
| Feature | Design Value |
|---|---|
| Very low profile | 0.95 mm typical height enables use in space-constrained consumer and portable electronics |
| ESD immunity | IEC 61000-4-2 level 4 (15 kV air / 8 kV contact) provides robust system-level ESD protection without external shielding |
| Automated placement compatibility | Matte tin-plated leads meet J-STD-002 solderability and JESD201 class 2 whisker resistance for high-yield SMT assembly |
| High surge capability | 4 kW peak pulse power (8/20 μs) handles lightning-induced surges in telecom and industrial fieldbus interfaces |
| Thermal reliability | Rated for +175 °C junction temperature and MSL level 1 reflow ensures long-term stability in automotive under-hood and industrial control applications |
Applications
| Industrial Sensor Interface | Power Supply Input Protection |
|---|---|
Use Scenario: Protecting analog output lines (e.g., 4–20 mA, 0–10 V) of pressure/temperature sensors exposed to motor drive noise and relay switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and ground to clamp induced spikes before they reach ADC input or op-amp buffer. Use Value: Prevents sensor output corruption and microcontroller reset events caused by >1 kV transients, maintaining measurement integrity in factory automation systems. | Use Scenario: Safeguarding DC input stage of industrial PLC power supplies against load dump and back-EMF from solenoid de-energization. IC Role / Device Role / Timing Role: Shunt protector mounted directly at connector entry point to divert surge energy away from upstream rectifier and bulk capacitor. Use Value: Limits input rail overvoltage to ≤25.2 V during 600 W transients, avoiding damage to 36 V-rated input regulators and enabling compliance with IEC 61000-4-5 level 3. |
| Telecom Line Card Protection | Automotive Body Control Module |
Use Scenario: Securing RS-485/RS-232 data lines in base station remote units subjected to lightning-induced common-mode surges on outdoor cabling. IC Role / Device Role / Timing Role: Paired unidirectional TVS devices on differential pairs, referenced to local ground, to suppress asymmetric transients without disrupting signal integrity. Use Value: Clamps 8/20 μs surges up to 4 kW while maintaining <10 pF junction capacitance, preserving signal rise time and minimizing bit error rate in 10 Mbps links. | Use Scenario: Shielding LIN bus transceivers and window motor drivers in door modules from battery reverse polarity and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS on VBAT-supplied rails and LIN signal lines to absorb 100 V/50 ms load dump pulses and ESD events from user contact. Use Value: Ensures uninterrupted operation during ISO 7637-2 pulse 5a (load dump) testing and meets OEM ESD requirements per ISO 10605 (30 kV air). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6F16A-M3/6A | Identical electrical specs and SlimSMA package; differs only in tape-and-reel packaging (3500 pcs vs. 14000 pcs per reel) | No functional difference; suitable for same PCB designs and reflow profiles | Select based on production volume and pick-and-place feeder compatibility |
| SMAJ16A-M3/61 | Same VWM (16 V), but larger SMA (DO-214AC) package (4.5 mm × 2.79 mm × 2.3 mm); 600 W PPPM, 25.2 V VC, but higher RθJA (150 °C/W vs. 120 °C/W) | Requires larger PCB footprint and has reduced thermal performance; less suitable for high-density or thermally constrained layouts | Choose SMA6F16A-M3/6B for space-critical or high-temperature applications where SlimSMA's lower profile and better thermal resistance matter |
Compared with SMA6F16A-M3/6A, the -M3/6B offers identical protection performance with higher reel quantity for high-volume SMT lines; compared with SMAJ16A-M3/61, it delivers equal clamping and surge ratings in a 60 % lower-profile package with superior thermal resistance-critical for compact industrial and automotive modules.
Availability
SMA6F16A-M3/6B is available at Aetrix Electronics and suitable for industrial sensor interfaces, telecom line card protection, and automotive body control modules requiring stable component supply and long-term lifecycle support.
Supply support for SMA6F16A-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, MOSFETs, and optoelectronics with emphasis on reliability, precision, and application-specific optimization.
The SMA6F series belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-efficiency, low-profile transient suppression in space- and thermally-constrained industrial, automotive, and communications equipment.
FAQ
What is the maximum clamping voltage of the SMA6F16A-M3/6B under a 10/1000 μs surge?
The SMA6F16A-M3/6B has a maximum clamping voltage (VC) of 25.2 V when subjected to a 10/1000 μs waveform at its rated peak pulse current of 14.3 A. This value is measured per JEDEC standards and ensures protected circuits remain below critical overvoltage thresholds during sustained transients such as inductive switching events. The SMA6F16A-M3/6B maintains this clamping performance across its full operating temperature range.
Is the SMA6F16A-M3/6B suitable for automotive applications?
Yes, the SMA6F16A-M3/6B is suitable for automotive body electronics applications including LIN bus protection and window motor driver inputs. It meets ISO 10605 ESD requirements (8 kV contact / 15 kV air) and withstands junction temperatures up to +175 °C. While not AEC-Q200 qualified out-of-box, its robust construction, MSL level 1 reflow rating, and proven performance in load-dump-like conditions make it widely deployed in non-safety-critical automotive modules. Always validate SMA6F16A-M3/6B in final system-level testing per OEM specifications.
What does the "/6B" suffix indicate in SMA6F16A-M3/6B?
Within the SMA6F5.0A–SMA6F20A family, the "/6B" suffix denotes the preferred packaging configuration: 14,000 pieces per 13-inch diameter plastic tape-and-reel. It shares identical electrical, thermal, and mechanical characteristics with the /6A variant (3,500 pieces per 7-inch reel). Both use the SlimSMA (DO-221AC) package and M3 halogen-free, RoHS-compliant construction. The SMA6F16A-M3/6B is optimized for high-volume SMT production lines requiring longer reel life and fewer changeovers.
How does the SMA6F16A-M3/6B compare to bidirectional TVS diodes?
The SMA6F16A-M3/6B is unidirectional and intended for DC-biased lines where polarity is fixed-such as power rails or single-ended signal paths referenced to ground. Unlike bidirectional TVS diodes, it does not protect against reverse-voltage transients; its cathode must be connected toward the higher potential. This design yields lower leakage (<0.2 μA) and tighter VBR tolerance than equivalent bidirectional parts. For AC or floating lines, a bidirectional device would be required-but the SMA6F16A-M3/6B delivers superior performance where unidirectional clamping suffices.
What is the thermal resistance junction-to-ambient (RθJA) for the SMA6F16A-M3/6B?
The SMA6F16A-M3/6B has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on a standard FR4 PCB with 2 oz. copper and the recommended pad layout. Maximum RθJA is specified as 150 °C/W. This value enables accurate thermal derating: at 55 °C ambient, its power dissipation drops to 8 W (per datasheet), and at 100 °C ambient, it falls to ~4.5 W. Proper heatsinking or adjacent copper pour improves thermal performance, and the SMA6F16A-M3/6B's SlimSMA package contributes to lower RθJA versus legacy SMA packages.
SMA6F16A-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):
- 16V
- Voltage - Breakdown (Min):
- 17.8V
- Voltage - Clamping (Max) @ Ipp:
- 29.5V
- Current - Peak Pulse (10/1000µs):
- 119A (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)
SMA6F16A-M3/6B FAQ
1.How can I place an order for SMA6F16A-M3/6B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6F16A-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 SMA6F16A-M3/6B reliable?
The price and inventory of SMA6F16A-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 SMA6F16A-M3/6B is usually 5 days.
3.What payment methods are accepted for SMA6F16A-M3/6B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6F16A-M3/6B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6F16A-M3/6B?
SMA6F16A-M3/6B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6F16A-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 SMA6F16A-M3/6B?
For technical support, including SMA6F16A-M3/6B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6F16A-M3/6B requirements.
6.How does Aetrix verify that SMA6F16A-M3/6B is sourced from the original manufacturer or authorized distributors?
All SMA6F16A-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 SMA6F16A-M3/6B meets industry standards.
7.What is the process for return or replacement of SMA6F16A-M3/6B?
All SMA6F16A-M3/6B units undergo pre-shipment inspection (PSI). If there is an issue with SMA6F16A-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 SMA6F16A-M3/6B part is unused and in its original packaging.
Return procedure for SMA6F16A-M3/6B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA6F16A-M3/6B Tags
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