256GB PRO Endurance UHS-I microSDXC card
Samsung PRO Endurance 256GB MB-MJ256KA-APC microSDXC card with SD adapter
The Samsung PRO Endurance 256GB MB-MJ256KA-APC microSDXC card combines 256GB capacity, read speeds up to 100MB/s, Up to 40MB/s, U3, V30 and Class 10 ratings and an included SD adapter for always-on Full HD and 4K monitoring and recording devices.
- Capacity
- 256GB
- Read speed
- Up to 100MB/s
- Write speed
- Up to 40MB/s
- Speed class
- U3, V30 and Class 10
Maximum PRO Endurance capacity for long recording cycles
The Samsung PRO Endurance 256GB MB-MJ256KA-APC is designed for CCTV, dash cameras, body cameras and other always-on recording equipment. The exact capacity is rated for up to 140,160 hours of Full HD recording under Samsung's test conditions.
Up to 100MB/s read
The exact 256GB card is rated for sequential reads up to 100MB/s with a compatible host and Samsung reader.
40MB/s write performance
The exact 256GB model is rated for writes up to 40MB/s and carries U3, V30 and Class 10 ratings.
Defined speed classes
U3, V30 and Class 10 ratings help identify the card's verified application and video-performance class.
Compact microSDXC format
The 15 × 11 × 1 mm card includes a full-size SD adapter for supported host devices.
Six-proof durability
Samsung specifies water, temperature, X-ray, magnet, drop and wearout resistance under stated test conditions.
Capacity-specific endurance
Up to 140,160 hours of Full HD recording is specified for this exact capacity under Samsung's Full HD recording test.
Who is the Samsung PRO Endurance 256GB MB-MJ256KA-APC microSDXC card best for?
A strong choice for
- Long-duration surveillance recording
- Dash camera storage
- CCTV and home monitoring
- Body cameras
- High-capacity always-on recording
Consider another model if you need
- Your device cannot use 256GB media
- Your device does not support microSDXC
- Your required recording rate exceeds U3/V30
- You need removable storage outside the stated temperature range
Key specifications
- Model
- MB-MJ256KA-APC
- Family
- PRO Endurance
- Capacity
- 256GB
- Product type
- microSDXC memory card
- Interface
- UHS-I (SDR104)
- Read speed
- Up to 100MB/s
- Write speed
- Up to 40MB/s
- Speed class
- U3, V30 and Class 10
- Recording endurance
- Up to 140,160 hours of Full HD recording
- Dimensions
- 15 × 11 × 1 mm
- Weight
- Approximately 0.25 g
- Accessory
- SD adapter
- Warranty
- 5-year limited warranty; adapter 1 year
Full technical specifications
Capacity, interface and performance
| Model | MB-MJ256KA-APC |
|---|---|
| Family | PRO Endurance |
| Rated capacity | 256GB |
| Product category | microSDXC memory card |
| Interface | UHS-I (SDR104) |
| Sequential read | Up to 100MB/s |
| Sequential write | Up to 40MB/s |
| Speed class | U3, V30 and Class 10 |
| Operating voltage | 2.7–3.6 V |
Physical and environmental
| Dimensions | 15 × 11 × 1 mm |
|---|---|
| Weight | Approximately 0.25 g |
| Operating temperature | -25°C to 85°C |
| Non-operating / storage temperature | -40°C to 85°C |
| Durability | 10,000 mating or insertion/removal cycles |
| Water protection | Up to 72 hours in 1 metre of saltwater |
| Magnetic protection | Up to 15,000 gauss |
| X-ray protection | Up to 100 mGy |
| Drop protection | Up to 5 metres |
| EMC certifications | CE (UKCA), FCC, VCCI and RCM |
Application, endurance and warranty
| Positioning | Surveillance, dash camera, body camera and other always-on recording applications |
|---|---|
| Video support | Full HD and 4K support on compatible hosts |
| Recording endurance | Up to 140,160 hours of Full HD recording |
| Accessory | SD adapter included |
| Card warranty | 5-year limited warranty |
| SD adapter warranty | 1 year |
| Warranty limitation | Card warranty 5 years; adapter warranty 1 year |
Frequently asked questions about the Samsung PRO Endurance 256GB MB-MJ256KA-APC microSDXC card
What is the MB-MJ256KA-APC?
The MB-MJ256KA-APC is Samsung's 256GB PRO Endurance UHS-I microSDXC card supplied with an SD adapter.
What capacity does the MB-MJ256KA-APC provide?
The rated capacity is 256GB. Actual usable capacity is lower because some space is used for formatting and system functions.
What read speed does the MB-MJ256KA-APC support?
Samsung rates the MB-MJ256KA-APC for sequential reads up to 100MB/s with compatible equipment.
What write speed does the MB-MJ256KA-APC support?
Samsung rates the 256GB MB-MJ256KA-APC for writes up to 40MB/s.
Which speed classes apply to the MB-MJ256KA-APC?
The exact card is rated U3, V30 and Class 10.
What is the MB-MJ256KA-APC designed for?
It is designed for surveillance, dash camera, body camera and other continuous-recording applications.
Does the MB-MJ256KA-APC include an SD adapter?
Yes. Samsung lists a full-size SD adapter as the included accessory.
How durable is the MB-MJ256KA-APC?
Samsung specifies water, temperature, X-ray, magnet, drop and wearout resistance under defined laboratory conditions.
What are the dimensions of the MB-MJ256KA-APC?
The card measures 15 × 11 × 1 mm and weighs approximately 0.25 g.
What warranty applies to the MB-MJ256KA-APC?
The card has a five-year limited warranty and the included SD adapter has a one-year warranty.
- This exact model provides 256GB rated capacity.
- Recording endurance is based on Full HD video at 26Mbps; actual time varies.
- Confirm the camera's capacity and speed-class requirements.
- Samsung does not cover data-recovery costs or data loss.
