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About

About

Based and operated entirely out of Southern California for over 40 years, we design and manufacture high-performance RF power transistors and RF amplifier modules with a focus on exceptional customer service.

Image and Text Content

Sets of transistor chips

Our experienced engineering team supports your project every step of the way—from initial concept through high-volume production. We offer evaluation amplifiers, expert design input, and fast, reliable technical support to keep your development moving forward.

Our long product life cycles reflect a deep commitment to lasting partnerships. When you work with us, you gain a reliable supplier whose components help keep your products in production for decades.

Polyfet RF Devices Timeline

1971-1976

SK Leong is Engineering Manager at Intel; sets up Fab 2 at growing Intel which produced Intel's bipolar & CMOS products.

1976

SK Leong starts and operates a wafer fab called Polycore Electronics

1984

SK Leong founds Polycore RF

1985

Polycore RF develops and releases F series - world’s first gold metalized 1 GHz VDMOS RF transistors

1989

SK Leong renames Polycore RF to Polyfet RF Devices (“Polyfet” = Polysilicon field-effect transistor)

1996

Polyfet introduces its first LDMOS RF transistors

1997

S series VDMOS transistors released

1999

Polyfet releases its first RF power module PCM001

2010

Polyfet introduces its line of GaN RF transistors

2012

Polyfet releases second gen LDMOS transistors with higher performance

2016

Polyfet deepens its commitment to quality by obtaining ISO9001 certification

2023

Polyfet releases 2kW LDMOS transistor