25LC128
TDK5100 (2)TDK510 (4)TDK51 (9)TDK (28)

Infineon Technologies

TDK5100

RF Transmitter ASK, FSK 433 ~ 435MHz; 866 ~ 870MHz 3.2dBm 20 kbps PCB, Surface Mount Antenna 16-TSSOP (0.173", 4.40mm Width)
Infineon Technologies

TDK5100F

RF Transmitter ASK, FSK 434MHz 3.2dBm 20 kbps PCB, Surface Mount Antenna 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)

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