TF
TF
128GB TF CardGreat for storing a large number of high-resolution photos, full HD videos, apps, and games. A popular choice for smartphones and cameras.
The 128GB TF card marks a decisive performance leap: as the entry point of the MicroSDXC standard, it unlocks U3 write speeds, V30 Video Speed Class, and A1 random read performance simultaneously—making it the default specification demanded by drone brands, action camera OEMs, and professional-grade security hardware integrators worldwide.
At Jiangsu Ruixin Microelectronics, every 128GB TF card we produce is manufactured in our own Yangzhou facility using rigorously sourced NAND flash, assembled on automated SMT lines, and verified through full-capacity write testing before shipment. No intermediaries. No rebranded unknowns. Just factory-traceable memory with the performance ratings your product requires.
Whether you are building a consumer drone, a body-worn camera, a multi-channel NVR system, or an A1-optimized Android device, our 128GB TF card is engineered to deliver the sustained throughput that separates reliable products from RMA disasters.
The 128GB TF card occupies the high-performance sweet spot that separates entry-level consumer products from market-competitive professional ones. Our validated application scenarios:
Consumer & Professional DronesSustained U3 / V30 write speeds prevent dropped frames during 4K aerial footage capture—critical for DJI-ecosystem-compatible and white-label drone products. The 128GB capacity handles 2–4 hours of 4K flight footage without mid-session card swaps.
Action Cameras & Body-Worn CamerasOur 128GB TF card meets the minimum write speed requirements of GoPro-class and independent-brand action cameras shooting 4K/60fps. A1 IOPS support also enables fast thumbnail generation and in-camera editing on devices with Android-based OS layers.
Multi-Channel IP Surveillance & NVR Systems128GB supports 7–10 days of edge-stored 1080p footage across a typical 4-channel security system, or approximately 3–4 days of 4K single-channel local recording. Ideal for standalone NVRs, PTZ cameras, and AI-inference edge nodes requiring onboard buffer storage.
Android Smartphones & Tablets (OEM Pre-Install)A1-rated random I/O performance makes this card suitable for app storage expansion and pre-installed content delivery in Android devices. Faster cold launch times versus non-A1 cards improve the end-user experience on budget-to-mid-range handsets.
Embedded Systems & Industrial IoT (Extended Use Case)For Raspberry Pi 4/5 deployments, industrial HMI panels, and edge-AI modules, the 128GB capacity provides ample headroom for OS images, model weights, and continuous data logs. Our industrial-grade variant adds extended temperature tolerance for outdoor or in-vehicle deployments.
Portable Gaming & Multimedia DevicesNintendo Switch-compatible (FAT32 / exFAT), handheld Android consoles, e-book readers, and multi-media players benefit from the 128GB capacity for large game libraries and offline media collections.
Vertically Integrated Factory in Jiangsu, China
Our manufacturing base in Yangzhou covers NAND flash sourcing, card assembly, automated testing, and packaging under one roof. Factory-direct pricing, no trading company markups, and full supply chain visibility from wafer lot to finished goods.
Zero-Defect Production Protocol
Our quality control process for every 128GB TF card batch includes:
Full-capacity write verification — eliminates fake-capacity product entirely
Sustained write speed validation — confirms U3/V30 rating under real-world sequential workloads
A1 IOPS testing — random read/write performance validated at the card level
Thermal cycling — cards exposed to operating temperature extremes before shipment
ESD and vibration durability testing
Compliance Documentation
CE (Europe), RoHS (hazardous substances), FCC (USA) — standard inclusion
Additional certifications available on project basis: KC (Korea), PSE (Japan), BIS (India), BSCI
Sample → Mass Production Pipeline
Engineering samples dispatched within 5–7 business days. Mass production lead time: 15–25 days for standard configurations; 20–30 days for full custom OEM with branded packaging.
Q: What is the difference between U1 and U3 on a 128GB TF card?
A:Both are UHS Speed Class ratings under the UHS-I interface. U1 guarantees a minimum sustained write speed of 10 MB/s — sufficient for 1080p video. U3 guarantees a minimum 30 MB/s sustained write speed, which is the threshold required for 4K UHD video recording. Our standard 128GB TF card ships at U3/V30 rating. U1 variants are available for cost-sensitive OEM applications where 4K recording is not required.
Q: What is the V30 designation, and is it different from U3?
A:V30 (Video Speed Class 30) is a newer classification system specifically designed for video recording applications, guaranteeing a minimum 30 MB/s write speed. It effectively overlaps with U3 but provides a more meaningful guarantee for video workloads specifically. For card sourcing, U3 and V30 are functionally equivalent for 4K recording purposes; V30 labeling is preferred for consumer-facing products targeting action cameras and drone users.
Q: What is A1 rating, and does my application need it?
A:A1 (Application Performance Class 1) guarantees a minimum of 1,500 IOPS random read and 500 IOPS random write. This matters for devices that run applications directly from the card—Android phones using the card as adoptable storage, embedded Linux systems launching services from the card, or gaming handhelds loading game assets. If your product only performs sequential read/write tasks (video recording, photo storage), A1 is not a functional requirement but adds a quality tier signal.
Q: Is a 128GB TF card compatible with devices that have microSD slots?
A:Yes. TF card and microSD are the same physical and electrical standard. Our 128GB TF card is MicroSDXC format (the standard for capacities 64GB and above), which requires exFAT file system support. Any device designed for microSD cards manufactured after 2010 will support MicroSDXC. Devices that only support MicroSDHC (typically those designed for ≤32GB) will not recognize the card—this is a device limitation, not a card defect.
Q: What is the actual usable storage after formatting?
A:Due to the binary (1GB = 1,073,741,824 bytes) vs. decimal (1GB = 1,000,000,000 bytes) difference between card manufacturers and operating systems, a 128GB card will display as approximately 110–120GB on your device. This is consistent across the industry and is not a capacity defect.
Q: Can you supply 128GB TF cards pre-formatted with a specific file system or pre-loaded content?
A:Yes. We support custom pre-formatting (FAT32, exFAT, ext4), volume labeling, and pre-loaded digital content (firmware files, media content, software installers). This is particularly useful for OEM partners who distribute devices with pre-installed content or require specific partition configurations. Please discuss your requirements during the sample stage.
Q: My application requires 4K recording for more than 10 hours continuously. Should I consider a higher capacity?
A:For 24/7 continuous 4K loop recording or very long single-session recordings, we recommend exploring our 256GB TF Card or 512GB TF Card, which are purpose-designed for high-endurance, high-capacity applications such as professional NVR systems, dashcam fleets, and extended-deployment security cameras.
Our 128GB TF card is available in standard consumer grade and upgraded industrial grade. Share your project details and we will respond within 24 business hours with pricing, lead times, and sample availability.
When inquiring, please specify:
Order quantity (MOQ negotiable; volume pricing tiers available)
Speed grade required (U1 / U3+V30 / U3+V30+A1 / Industrial)
OEM branding scope (card printing / retail packaging / pre-loaded content)
Target device / application (helps our engineers confirm spec compatibility)
Destination country (for logistics planning and certification requirements
