I did a small temperature measurement test.
With the ambient temperature around 30’C, the Ultra Fit temperature is as high as 68’C during files were copied into it and the copy process looks like “intermittent” while the transfer speed dropped to around 18 MB/s (while usually it could reach up to 45 MB/s or higher).
When I put a fan continuously blowing directly to the Ultra Fit (at approx. 8 cm distance), the temperature dropped to 46’C.
The temperature was measured with Infrared Thermometer which has 1.5’C accuracy tolerance.
The Ultra Fit specification as stated in Sandisk portal is:
https://www.sandisk.com/home/usb-flash/ultra-fit-usb
| Available capacity: | 16GB, 32GB, 64GB and 128 GB |
| Performance/Speed: | Up to 130MB/s read; write speeds lower |
| Dimensions: | 19.1 x 15.9 x 8.8 mm; 0.75 x 0.63 x 0.35 in (LxWxH) – without cap |
| Operating Temperature: | 0 C to 45 C |
| Storage Temperature: | -10 C to 70 C |
| Compatibility: | USB 3.0 (backward compatible with USB 2.0) |
Does this mean my Ultra Fit temperature during file transfer (WRITE) at 68’C has way surpassed the specified max Operating Temperature (which is 45’C)? Would anyone kind enough to shed-the-light?
