Printed wiring board manufacturer's recognition mark
Consists of a unique UL recognized manufacturer's logo, along with a flammability rating (V-0 or 94V-0).
Lead - Free Certification
Pb-free certification markings are per the JEDEC spec.
Pb-free symbol - PB_FREE_SILK
e1 symbol (specifies the compositiion of the solder paste) - E1_SILK
2ND Level Interconnect (used until a board is considered Pb-free per the RoHS definition - This must follow the Pb-free symbol. It is abbreviated per spec) - 2ND_LVL_INTCT_SILK
260 °C (specifies maximum safe processing temperature) - 260C_SILK