How many Diodes Incorporated Diodes Incorporated FCX4 Series part numbers are listed?

3 Diodes Incorporated Diodes Incorporated FCX4 Series part numbers are listed, each with specifications and a datasheet where available.

Diodes Incorporated FCX4 Series

3 variants · Diodes Incorporated

About the Diodes Incorporated Diodes Incorporated FCX4 Series series

The Diodes Incorporated Diodes Incorporated FCX4 Series series groups 3 related part numbers, each listed with full specifications, a datasheet where available, and an RFQ option. The listed variants share a common case of TO-243AA, current - collector cutoff of 100nA and mounting type of Surface Mount. Variants differ by current - collector (Ic), DC current gain (hFE) (Min) @ ic, vce and frequency, so you can match the exact current - collector (Ic) your application requires using the selection guide below.

Select a variant by

Current - collector (Ic): 1 A · 225 mA
DC current gain (hFE) (Min) @ ic, vce: 100 @ 50mA, 10V · 300 @ 500mA, 5V
Frequency: 50MHz · 150MHz
Vce saturation (Max) @ ib, ic: 500mV @ 6mA, 50mA · 500mV @ 100mA, 1A
Voltage - collector emitter breakdown: 40 V · 400 V

Variant comparison

Parameter	FCX458TA	FCX491ATA
Current - collector (Ic)	225 mA	1 A
DC current gain (hFE) (Min) @ ic, vce	100 @ 50mA, 10V	300 @ 500mA, 5V
Frequency	50MHz	150MHz
Vce saturation (Max) @ ib, ic	500mV @ 6mA, 50mA	500mV @ 100mA, 1A
Voltage - collector emitter breakdown	400 V	40 V

Shared specifications

Case: TO-243AA
Current - collector cutoff: 100nA
Mounting type: Surface Mount
Operating temperature: -65°C ~ 150°C (TJ)
Package: Tape & Reel (TR); Cut Tape (CT)
Power - max: 1 W
Transistor type: NPN

Request a quote on any Diodes Incorporated FCX4 Series part number and we confirm price, availability and lead time per line — including end-of-life and allocation-constrained variants.

Frequently asked questions

How do the Diodes Incorporated Diodes Incorporated FCX4 Series variants differ?: Diodes Incorporated FCX4 Series part numbers differ by current - collector (Ic), DC current gain (hFE) (Min) @ ic, vce, frequency and vce saturation (Max) @ ib, ic. Use the selection guide above to pick by current - collector (Ic).
How many Diodes Incorporated Diodes Incorporated FCX4 Series part numbers are listed?: 3 Diodes Incorporated Diodes Incorporated FCX4 Series part numbers are listed, each with specifications and a datasheet where available.
How do I get pricing and lead time for Diodes Incorporated Diodes Incorporated FCX4 Series?: Request a quote (RFQ) for any Diodes Incorporated FCX4 Series part number and we confirm price, availability and lead time per line — including end-of-life and hard-to-find variants.