Chip Inductor for Critical Applications

Just a little recap, an inductor is a passive electronic component that stores energy in the form of a magnetic field. Coilcraft's chip inductors deliver high performance in the smallest possible size, with high reliability in harsh environment. The first post we discussed about a series of outgassing complaint Coilcraft chip inductors. Now we will discuss about Chip Inductors for Critical Application.

Coilcraft's ST235RAA is a series of 0402 size chip inductor. Just like the AE235RAA series, ST235RAA series has: an exceptionally high Q-factors, especially at use frequency; outstanding self-resonant frequency; tight inductance tolerance; and excellent batch-to-batch consistency. It has: a ceramic core material; ambient temperature of -40°C to 125°C with Imax, 125°C to 260°C with derated current; and temperature coefficient of inductance of 25 to 155 ppm/°C.

Figure 1 shows the graph that presents inductance (nH) versus frequency (MHz). Figure 2 shows the graph the presents Q-factor versus frequency (MHz).

FIGURE 1: Typical L vs Frequency

FIGURE 2: Typical Q vs Frequency

ST235AAA series comes in 48 different part numbers that have their distinct specifications. Specifications such as: inductance (nH); percent tolerance; Q min; SRF min (GHz); DCR max (Ω); and Imax (mA). For example, ST235RAA1N0JLZ has:

• Inductance = 1.0 nH
• Percent tolerance = 5
• Q min = 20
• SRF min = >5.00 GHz
• DCR max = 0.045 Ω
• Imax = 600 mA

So if you want to know more of ST235RAA Chip Inductors, click on the link below:
Chip Inductor Series for Critical Applications