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Frequently used components

The following are frequently used commercial off-the-shelf (COTS) electronic components. These lists are not endorsements of the corresponding products and are provided exclusively for information purposes.

Transistor Cross Reference

Here are some popular transistors used in low-noise preamplifiers and their equivalents from alternate manufacturers.

Manufacturer Part Number Manufacturer Part Number
Broadcom/Avago/Agilent/HP ATF-33143*   Mini-Circuits SAV-331+
Broadcom/Avago/Agilent/HP ATF-54143*   Mini-Circuits SAV-541+
Broadcom/Avago/Agilent/HP ATF-55143*   Mini-Circuits SAV-551+
Broadcom/Avago/Agilent/HP ATF-58143*   Mini-Circuits SAV-581+

* now obsolete according to this notice

Nonmagnetic Inductors

These are some inductors known to have a non-ferromagnetic core and otherwise negligible ferromagnetic materials. Measured self-resonant frequency (SRF) is reported where available. The SRF is important when the inductor is used as an RF choke because at the SRF the series impedance of the inductor is maximal.

It is also common also to use self-wound inductors when the required inductance values are modest (e.g., below 100 nH).

Coilcraft

Supplier of numerous air-core and other nonmagnetic inductors. Tunable versions can be ordered with aluminum core instead of ferrite.

1008CS Series

Non-magnetic core.

1008HS Series

Non-magnetic core.

Part number Nominal Inductance (nH) Measured SRF (MHz)
1008HS-102T 1000 360

Panasonic

ELJ series

Non-magnetic core and otherwise no measurable magnetism.

Part number Nominal Inductance (nH) Measured SRF (MHz)
ELJNAR22 220 320
ELJNAR27 270 300
ELJNAR47 470 220

Vishay

IMC-1812 Series

Non-magnetic core up to 0.82uH.

IM-6-RFCS-40 Series

Non-magnetic core up to 2.2uH.

Nonmagnetic Capacitors

These are some capacitors known to contain negligible ferromagnetic materials.

Panasonic

ECC and ECK Series

Radial ceramic disk capacitors with leads, high voltage rating. Confirmed nonmagnetic (various part numbers beginning with ECCNVS).

TDK

CC45 Series

Radial ceramic disk capacitors with leads, high voltage (kV range) rating. Confirmed very small magnetic attraction (CC45SL3AD821JYNNA, 820pF).

Vishay

F Series

Radial ceramic disk capacitors with leads, high voltage (kV range) rating. Confirmed nonmagnetic (F102K43Y5RP6UK5R, 1000pF).