Description
Wholesale Custom MicroSD Cards 8-256GB U1/U3/V30 Speed Class Bulk OEM Options
Premium MicroSD TF Cards with capacities ranging from 8GB to 256GB, engineered for high-performance storage across diverse devices. These cards support customizable speed classes (Class 6, Class 10, U1, U3, V30, A1) and incorporate advanced main control circuits and high-speed chips for unparalleled stability and durability . Rigorous quality control ensures long-term data integrity, making them ideal for professional and everyday use.
MicroSD cards Key Features & Benefits
Wide Capacity Range 🌐
Available in 8GB, 16GB, 32GB, 64GB, 128GB, and 256GB to suit varying storage needs. For video recording, 32GB or higher is recommended to handle high-resolution files efficiently .
High-Speed Performance ⚡
Supports multiple speed classes:
Class 6/Class 10: For standard HD video and photo storage.
U1/U3: Minimum write speeds of 10MB/s (U1) and 30MB/s (U3), ideal for 4K video .
V30: Optimized for continuous high-resolution recording (e.g., drones, action cameras).
A1: Ensures smooth app performance on smartphones and tablets .
Robust Design & Longevity 🔒
Stable main control circuit minimizes data corruption risk.
10,000 read/write cycles and a lifespan of up to 5 years under normal use.
Operates in extreme temperatures (-40°C to 85°C), suitable for industrial and outdoor applications .
Customization Options 🏷️
Custom logos accepted based on MOQ, perfect for branding and OEM partnerships.
Flexible packaging: PVC trays, blank MicroSD packages, or branded boxes with adapters.
Broad Compatibility 📱
Works seamlessly with cameras, smartphones, tablets, car DVRs, GPS devices, medical equipment, and laptops .
TF cards Technical Specifications
| Parameter | Details | |
|---|---|---|
| Capacities | 8GB, 16GB, 32GB, 64GB, 128GB, 256GB 512GB 1TB | |
| Speed Classes | C6, C10, U1, U3, V30, A1 | |
| Working Voltage | 2.6V – 3.6V | |
| Storage Temperature | -40°C to 85°C (-40°F to 185°F) | |
| Life Cycle | 10,000 cycles | Up to 5 years usage |
| Warranty | 1-year limited | |
| Product Size | 15mm x 11mm x 1mm (0.59″ x 0.43″ x 0.0039″) |
MicroSD cards Wholesale Packaging Options
- PVC Tray Bulk Package: Ideal for large-volume orders.
- Blank MicroSD Card Package: Simple, cost-effective option.
- Premium Package: Includes PP plastic box and MicroSD adapter for retail readiness.
- Customized Packaging: Available with MOQ requirements for branded presentations.







How can I customize my MicroSD Cards speed and capacity?
Customers select the best choice for them based on the situation they need.
- Class Low Speed – C4, C6 ( Up to 12M/S read, 4M/S -6M/S Write)
- Class Medium Speed – C10 (Up to 18M/S read, 10M/S write)
- High Speed Class – C10 U3 (60M/S – 90M/S read, 20M/S – 45M/S Wite)
So there would be like:
128GB C4= 128MB Class 4 (Read Speed Up to 12MB/s, Write Speed Up to 4MB/s)
4GB C6 = 4GB Class 6 ( Read Speed Up to 12MB/s, Write Speed Up to 6MB/s)
8GB C10= 8GB Class 10 ( Read Speed Up to 18MB/s, Write Speed Up to 10MB/s)
64GB C10 U3 = 32GB Class 10 UHS-3 ( Read Speed Up to 75MB/s, Write Speed Up to 30MB/s)
256GB C10 U3=256GB Class 10 UHS-3 ( Read Speed Up to 90MB/s, Write Speed Up to 45MB/s)
Capacity is the storage space. The more GB for the capacity, the more videos,photos or songs will be stored.
A MP3 song with 44K/320kbps would be like 2.4M.
8GB ≈ 27,000 Songs;
16GB ≈ 106,000 Songs;
32GB ≈ 426,000 Songs;
128GB ≈ 6,826,000 Songs.
It's fake when I found my TF Cards capacity less?
We do not manufacture or sell any fake ones. It would be less for the storage capacity, it is true.
TF Card 32G = 32* 1000 * 1000 * 1000 = 32000000000 bytes.
And, 1024bytes = 1KB, 1024KB = 1 MB, 1024MB = 1GB
so 32GB MicroSD card storage would be 32000000000 / 1024 /1024 / 1024 =29.8GB.
The system files inside the MicroSD card will also cost space.
Our TF Card Storage Capcity are as below:
16GB – approximately 14GB-15GB
32GB – approximately 28GB-30GB
64GB – approximately 58GB-60GB
128GB – approximately 115GB-119GB
256GB – approximately 230GB-238GB
TF Micro SD Cards Speed Class Reference

Speed
Mark
Minimum Sequential Write Speed
SD/Bus/Mode
Application
VSC*

90M/S
60M/S
30M/S
10M/S
6M/S
High Speed Class Video Recording
UHS**
Speed
Class

30M/S
10M/S
UHS-II/UHS-I
Speed
Class

10M/S
6M/S
4M/S
High Speed
Normal Speed
*VSC: Video Speed Class **UHS : Ultra High Speed

What is MicroSD TF Class A2?
MicroSD cards mark with A2-class. This means that the Micro SD card meet the particular standard for smart phones that need additional storange space for applications. Both of APP Performance A1(A1) and APP Performance A2(A2) are with minimum Sequential write speed 10M/S. Class A1 is with 1500 IOPS and 500 IOPS. Class A2 reaches 4000 IOPS and 2000 IOPS. A2 is much better for performance of smart phone APP.
MicroSD, Micro SD Difference
There is no physical or technical difference in the product itself. Both terms refer to the exact same tiny memory card. The difference is purely in naming convention and correctness.
microSD(with a lowercase ‘m’) is the official, standardized trademark as defined by the SD Association.Micro SD(with a capital ‘M’) is the common, informal spelling used colloquially and by many retailers and manufacturers.
Detailed Breakdown:
| Feature | microSD (Official) | Micro SD (Common) |
|---|---|---|
| Origin | The official trademark name set by the SD Association (SDA), the standards body that governs the technology. | A natural, capitalized English rendering of the term, widely adopted in common usage. |
| Capitalization | The “m” in “micro” is always lowercase in official documents and specifications. | Typically uses standard English capitalization rules (capital “M”). |
| Usage Context | Found in technical specifications, official product data sheets, and standards documents. It’s the legally correct trademark. | Used in everyday conversation, retail product titles, articles, and marketing because it reads more naturally in English. |
| Associated Formats | Used precisely for the card type’s full name: microSDHC, microSDXC, microSDUC. | Often written as Micro SD HC, Micro SD XC, etc., though this is less precise. |
| What it means | This is the “correct” way to refer to the card from a standardization perspective. | This is the “understood” way people see and write it. If you see this, you know it’s the same item. |
Practical Takeaway:
When searching or buying: Use either term. Online retailers and search engines understand they are the same. You will find the same products.
For technical accuracy: If you’re writing a manual, specification sheet, or want to be precise,
microSDis the formally correct term.In everyday life: It doesn’t matter. Saying or writing “Micro SD” is perfectly acceptable and everyone will know what you mean.
Analogy: It’s similar to the difference between iPhone (Apple’s official trademark) and someone writing I-Phone in a text message. They mean the same device; one is just the official styling.
Bottom Line: Don’t worry about the difference for general use. Just know that if you see microSD, Micro SD, or even MicroSD, they all point to that same small, rectangular memory card for your phone, camera, or drone.
High-quality wholesale Micro SD TF Cards 8GB-256GB with customizable speed classes (C6/C10/U1/U3/V30/A1). Features stable main control circuits, extended lifespan (10k cycles), and custom logo options. Ideal for cameras, smartphones, drones & medical devices. 1-year warranty. Bulk packaging available.
Our Micro SD TF cards are engineered for reliability and performance, backed by strict quality controls and tailored customization options. Whether for consumer electronics, industrial applications, or branding projects, we offer a balanced combination of capacity, speed, and durability. Explore our bulk pricing and customization options today!








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