| Model | Manufacturers | lot number | encapsulation | illustrate | 
| SP3232EEN | SIPEX | 16+ | DIP | INTERFACE TRANSCEIVERS | 
| SP3083EEN-L/TR | SIPEX | 10+ | SOP-14 | Advanced-Failsafe RS-485/RS-422 Transceivers 1/8th Unit Load, Slew-Rate Limited, 【15kV ESD-Protected | 
| SP3220ECA-L/TR | SIPEX | 10+ | TSSOP | +3.0V to +5.5V RS-232 Driver/Receiver Pair | 
| SPX-5205 | SIPEX | 2010+ | SOT23-5 | LDO regulator chip | 
| SP3243EEY-L | SIPEX | 10+11+ | TSSOP28 | Hong Kong spot, imported original | 
| SP3223EEY-L/TR | SIPEX | 10+11+ | TSSOP20 | Hong Kong spot, imported original | 
| SP3222EUCY | SIPEX | 10+11+ | TSSOP20 | Hong Kong spot, imported original | 
| SP3220ECY/TR | SIPEX | 10+11+ | TSSOP16 | Hong Kong spot, imported original | 
| SP3203ECY/TR | SIPEX | 10+11+ | TSSOP16 | Hong Kong spot, imported original | 
| SP3249ECA | SIPEX | 10+11+ | SSOP28 | Hong Kong spot, imported original | 
| SP3245EEA-L | SIPEX | 10+11+ | SSOP28 | Hong Kong spot, imported original | 
| SP3245ECA-L | SIPEX | 10+11+ | SSOP28 | Hong Kong spot, imported original | 
| SP3244EEA-L | SIPEX | 10+11+ | SSOP28 | Hong Kong spot, imported original | 
| SP3244ECA-L | SIPEX | 10+11+ | SSOP28 | Hong Kong spot, imported original | 
| SP3243EUCA | SIPEX | 10+11+ | SSOP28 | Hong Kong spot, imported original | 
| SP3239ECA/TR | SIPEX | 10+11+ | SSOP28 | Hong Kong spot, imported original | 
| SP3238CA | SIPEX | 10+11+ | SSOP28 | Hong Kong spot, imported original | 
| SP213EHCA-L/TR | SIPEX | 10+11+ | SSOP28 | Hong Kong spot, imported original | 
| SP211HCA | SIPEX | 10+11+ | SSOP28 | Hong Kong spot, imported original | 
| SP211EEA/TR | SIPEX | 10+11+ | SSOP28 | Hong Kong spot, imported original |