Product Detail
- Packages: SMA, SMB, SMC.
- Current range: 1A-5A.
- Voltage classes: 20V-200V.
- Use case: SMT power boards.
Product Description
This SMA SMB SMC Schottky Diode page helps you choose a surface-mount package before the PCB, thermal budget or purchasing backup list becomes fixed. You can compare SS14 in SMA, SS24 in SMB, SS34 in SMC and related DO-214 Schottky options by pad size, current class, reverse voltage, heat spreading, polarity mark and reel supply. The useful decision is often not the highest rating; it is the smallest package that still gives your board enough margin. Lian Tuo helps you approve samples with fewer footprint surprises.
Our SMA SMB SMC Schottky Diode Options
| SMA Schottky Diode | Compact DO-214AC body for 1A class rails, slim boards and automated placement lines. |
| SMB Schottky Diode | Larger DO-214AA package for more copper contact, stronger surge margin and moderate heat. |
| SMC Schottky Diode | DO-214AB direction for higher current paths where the board can afford more footprint. |
| SS14 SMA Schottky Diode | Common 1A 40V SMD option for low-voltage output rails and compact converter boards. |
| SS34 SMC Schottky Diode | 3A SMD choice for warmer power paths and higher output current in SMT production. |
Feature Box
- Package ScalingSMA, SMB and SMC support different power margins.
- SMT FriendlyReel packing and polarity marks suit automated placement.
- Thermal ChoicePad area and copper spreading can be compared early.
- Footprint BackupEquivalent choices stay tied to the approved land pattern.
Scale Without Guessing
A SMA SMB SMC Schottky Diode selection gives you a clear package ladder for SMT power boards. SMA keeps the layout small, SMB adds pad area, and SMC gives more thermal room. Start from current and board heat so the package step is chosen for a reason. It also makes alternate approval easier when the same board stays in production.
Protect The Footprint
Once a PCB footprint is released, package changes become expensive. A SMA SMB SMC Schottky Diode replacement should match the land pattern, body height and polarity mark before it is treated as equivalent. That check keeps purchasing flexibility from turning into an assembly problem. That keeps the package decision visible to both engineering and purchasing.
Use Copper Wisely
SMD Schottky parts depend heavily on copper area for heat spreading. A larger package only helps if the board can use that area properly. Share pad design, load current and nearby hot parts so the SMA SMB SMC Schottky Diode choice fits the real layout. It also makes alternate approval easier when the same board stays in production.
Keep Reel Supply Clean
Automated lines care about package consistency, reel orientation, marking and moisture handling. Lian Tuo can compare SMA, SMB and SMC Schottky options with those production details in mind. That helps your team approve not only the diode, but the way it arrives. That keeps the package decision visible to both engineering and purchasing.
Vertical Product Applications
Adapter Output Boards
Use a SMA SMB SMC Schottky Diode in adapter output boards when the design needs low loss and repeatable SMT assembly. SMA may suit thin adapters, while SMB or SMC can improve heat margin. Confirm output current and copper area before samples. It also makes alternate approval easier when the same board stays in production.
LED Driver SMT Lines
LED driver SMT lines need Schottky packages that place cleanly and survive warm housings. A SMA SMB SMC Schottky Diode path lets you scale package size as current rises. This keeps the BOM easier to manage across several driver boards. That keeps the package decision visible to both engineering and purchasing.
Converter Module Layouts
Converter modules often have tight routing around inductors and output capacitors. A SMA SMB SMC Schottky Diode should match both electrical stress and land pattern. Choosing the package early helps your layout stay compact without starving the diode of heat path. It also makes alternate approval easier when the same board stays in production.
FAQ
How do I choose between SMA, SMB and SMC?
Start with the fixed footprint if the PCB already exists. For new layouts, compare current, voltage, surge, board temperature and available copper. SMA is compact, SMB gives more area, and SMC supports stronger thermal margin. It also makes alternate approval easier when the same board stays in production.
Can SMA, SMB and SMC be interchanged?
Not directly unless the PCB supports the alternate footprint. These packages have different body sizes, pad dimensions and heat behavior. Always check the land pattern and height before using one SMA SMB SMC Schottky Diode package as a replacement. That keeps the package decision visible to both engineering and purchasing.
Is SS14 always an SMA Schottky diode?
SS14 is commonly supplied in an SMA-style package, but buyers should still confirm the datasheet, marking and reel format. Different suppliers may present similar part numbers with details that matter during production approval. It also makes alternate approval easier when the same board stays in production.
When should I move up to SMC?
Move to SMC when current, surge or board temperature pushes smaller SMA or SMB parts too hard. SMC needs more board space, so it should be chosen when the layout can use the larger pad area effectively. That keeps the package decision visible to both engineering and purchasing.
What data helps quote SMD Schottky packages?
Send package target, voltage, current, reel quantity, footprint limits, target model and operating temperature. A PCB pad drawing or old part photo helps us avoid recommending a package that does not fit. It also makes alternate approval easier when the same board stays in production.
Can one package family cover several products?
Yes, if each board has compatible current, voltage and thermal conditions. Many buyers use a package ladder across products, but each rail should still be checked so one part is not forced into a hotter position. That keeps the package decision visible to both engineering and purchasing.
Can Lian Tuo support SMT package equivalents?
Yes. We can compare SMA, SMB and SMC Schottky options by footprint, rating, marking and packing. This helps your team approve backup parts without creating extra layout or assembly risk. It also makes alternate approval easier when the same board stays in production.
