Microdot S-50

Female Body

Male Body


50 Ω

Maximum Operating Frequency

2.00 GHz

Coupling Mechanism

Microdot S-50 is a proprietary coaxial connector interface developed by Microdot (now Tyco Electronics). While Microdot manufactured a range of connectors, the screw-on S-50 design was the only to gain relative popularity. The connector features a compact form factor using a 10-32 (0.190-32 UNF2B) thread, and performance up to 2 GHz.

As the connector is not industry standard its usage is limited. The connector can be found in a range of small low frequency electronic devices such as accelerometers, sensors, and small microphones.

Male Dimensions Female Dimensions
Microdot male plug RF connector
Courtesy of Rosenberger


Microdot female socket RF connector CAD interface drawing
Courtesy of Rosenberger


Code Min (mm) Max (mm) Code Min (mm) Max (mm)
A Ø 1.10 nom. - A 1.10 nom. -
B Ø 0.85 nom. - B resilient -
C Ø 4.00 nom. - C 0.00 0.40
D 6 HEX - D 0.10 0.30
E 10-32 UNF-2B - E 10-32 UNF-2B -
F 3.60 nom. - F - -
G 2.50 nom. - G - -