The UDZS20B is Zener Diodes 20 Volt 200mW 5%, that includes Reel Packaging, they are designed to operate with a RR Part Aliases, Configuration is shown on datasheet note for use in a Single.
UDZS2.7B with user guide manufactured by ROHM. The UDZS2.7B is available in SOD-323 Package, is part of the IC Chips.
UDZS2.7B/UDZSNPTE-172.7B with circuit diagram manufactured by ROHM. The UDZS2.7B/UDZSNPTE-172.7B is available in SOD323 Package, is part of the IC Chips.
The UDZS20B RR is Diode Zener Single 20V 2% 200mW 2-Pin SOD-323F manufactured by TSC. The UDZS20B RR is available in SOD-323 Package, is part of the IC Chips, , and with support for Diode Zener Single 20V 2% 200mW 2-Pin SOD-323F.