Yes, tyhey do still make them. SLC based SSDs. ADATA has recently announced a new line of industrial-grade SSDs, the ISSS332 SLC. Available in capacities ranging from 8GB to 256GB, these slim 2.5-inch SSDs (7mm thick) are built with SLC NAND Flash memory chips, a SATA 6.0 Gbps interface, an MTBF of 2 million hours and an industrial operational temperature of -40-degree C to 90-degree C.

Designed for a plethora of scenarios, these industrial-grade SSDs utilize a full range of advanced technologies, including S.M.A.R.T (self-monitoring and reporting technology), NCQ and TRIM command for high-reliability data transfer.

ATA ISSS332 SATA III 6Gbps 2.5" solid state drives feature the best quality hardware components and ship with the most comprehensive internally-supported software, ensuring they fully comply with JEDEC specifications. They are purpose-made for military-grade notebooks, industrial PCs, and embedded applications, and take full advantage of ADATA proprietary A+ Testing Methodology. This guarantees drives meet the exacting requirements of industrial and enterprise applications. When it comes to SSD quality, ADATA A+ Testing Methodology delivers superior functionality and reliability. ISSS332 SSDs undergo the strictest quality controls to provide industrial systems with the best choice for reliability and rugged performance.

SATA III 6Gbps, SATA II 3Gbps backward compatible 
● Industry-standard 2.5" form factor 
● Wide range commercial operating temperature: -10°C to 80°C 
● Industrial operating temperature: -40°C to 90°C 
● High-speed MLC NAND Flash 
● S.M.A.R.T. function 
● NCQ and Windows TRIM command 
● Hardware power detector and Flash protection 
● High reliability and performance 
● Suitable for industrial computing, embedded applications, gaming, surveillance and general automation

Performance-wise, the ISSS332 SLC SSDs can deliver read/write speeds of up to 560/450 MB/s. Prices unannounced yet.