page 2RF iron powder toroids

Order code: T68-6

Micrometals T68-6

Iron powder toroid core, 3 - 40 MHz, OD 17.5 mm

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Stock: 12472 pcs

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Order code: T68-6A

Micrometals T68-6A

Iron powder toroid core, 3 - 40 MHz, OD 17.5 mm

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Stock: 0 pcs

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Order code: T94-26

Micrometals T94-26

Iron powder toroid core T94-26

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Order code: T80-0

Micrometals T80-0

Non-magnetic phenolic material toroid core, 50 - 350 MHz, OD 20.2 mm

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Stock: 2412 pcs

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€0,890
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Order code: T80-1

Micrometals T80-1

Iron powder toroid core, 0.15 - 3 MHz, OD 20.2 mm

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Stock: 769 pcs

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€1,310
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Order code: T80-10

Micrometals T80-10

Iron powder toroid core, 15 - 100 MHz, OD 20.2 mm

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Stock: 2148 pcs

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€1,73
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Order code: T80-17

Micrometals T80-17

Iron powder toroid core, 20 - 200 MHz, OD 20.2 mm

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Stock: 3878 pcs

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€1,51
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Order code: T80-2

Micrometals T80-2

Iron powder toroid core, 0.25 - 20 MHz, OD 20.2 mm

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Stock: 1032 pcs On order: 4000

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€0,880
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Order code: T80-3

Micrometals T80-3

Iron powder toroid core, 0.02 - 1 MHz, OD 20.2 mm

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Stock: 963 pcs

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€1,330
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Order code: T80-6

Micrometals T80-6

Iron powder toroid core, 3 - 40 MHz, OD 20.2 mm

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Stock: 1442 pcs

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€1,79
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Order code: T94-0

Micrometals T94-0

Non-magnetic phenolic material toroid core, 50 - 350 MHz, OD 23.9 mm

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Stock: 974 pcs

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€1,050
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Order code: T94-1

Micrometals T94-1

Iron powder toroid core, 0.15 - 3 MHz, OD 23.9 mm

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Stock: 45 pcs

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€2,33
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Order code: T94-10

Micrometals T94-10

Iron powder toroid core, 15 - 100 MHz, OD 23.9 mm

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Stock: 1221 pcs

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€3,02
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Order code: T94-17

Micrometals T94-17

Iron powder toroid core, 20 - 200 MHz, OD 23.9 mm

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Stock: 841 pcs

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€2,53
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Order code: T94-2

Micrometals T94-2

Iron powder toroid core, 0.25 - 20 MHz, OD 23.9 mm

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Stock: 1058 pcs

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€1,440
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Order code: T94-3

Micrometals T94-3

Iron powder toroid core, 0.02 - 1 MHz, OD 23.9 mm

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Stock: 186 pcs

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€2,26
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Order code: T94-6

Micrometals T94-6

Iron powder toroid core, 3 - 40 MHz, OD 23.9 mm

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Stock: 1756 pcs

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€2,61
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Order code: T106-0

Micrometals T106-0

Non-magnetic phenolic material toroid core, 50 - 350 MHz, OD 26.9 mm

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Stock: 1555 pcs

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€1,44
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Order code: T106-17

Micrometals T106-17

Iron powder toroid core, 20 - 200 MHz, OD 26.9 mm

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Stock: 924 pcs

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€3,57
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Order code: T106-2

Micrometals T106-2

Iron powder toroid core, 0.25 - 20 MHz, OD 26.9 mm

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Stock: 2118 pcs

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€1,88
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Order code: T106-3

Micrometals T106-3

Iron powder toroid core, 0.02 - 1 MHz, OD 26.9 mm

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Stock: 144 pcs

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€3,06
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Order code: T106-6

Micrometals T106-6

Iron powder toroid core, 3 - 40 MHz, OD 26.9 mm

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Stock: 517 pcs On order: 2100

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€4,29
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Order code: T130-0

Micrometals T130-0

Non-magnetic phenolic material toroid core, 50 - 350 MHz, OD 33 mm

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Stock: 432 pcs

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€1,72
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Order code: T130-17

Micrometals T130-17

Iron powder toroid core, 20 - 200 MHz, OD 33 mm

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Stock: 388 pcs On order: 1000

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€4,89
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Order code: T130-2

Micrometals T130-2

Iron powder toroid core, 0.25 - 20 MHz, OD 33 mm

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Stock: 525 pcs On order: 1000

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€2,49
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Order code: T130-3

Micrometals T130-3

Iron powder toroid core, 0.02 - 1 MHz, OD 33 mm

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Stock: 597 pcs

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€3,44
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Order code: T130-6

Micrometals T130-6

Iron powder toroid core, 3 - 40 MHz, OD 33 mm

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Stock: 733 pcs

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€4,73
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Order code: T157-0

Micrometals T157-0

Non-magnetic phenolic material toroid core, 50 - 350 MHz, OD 39.9 mm

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Stock: 232 pcs

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€3,33
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Order code: T157-17

Micrometals T157-17

Iron powder toroid core, 20 - 200 MHz, OD 39.9 mm

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Stock: 673 pcs

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€6,86
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Order code: T157-2

Micrometals T157-2

Iron powder toroid core, 0.25 - 20 MHz, OD 39.9 mm

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Stock: 142 pcs On order: 480

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€4,71
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Order code: T157-6

Micrometals T157-6

Iron powder toroid core, 3 - 40 MHz, OD 39.9 mm

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Stock: 3405 pcs

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€8,68
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Order code: T184-2

Micrometals T184-2

Iron powder toroid core, 0.25 - 20 MHz, OD 46.7 mm

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Stock: 66 pcs On order: 560

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€8,56
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Order code: T184-6

Micrometals T184-6

Iron powder toroid core, 3 - 40 MHz, OD 46.7 mm

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Stock: 83 pcs

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€15,57
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Order code: T225-6

Micrometals T225-6

Iron powder toroid core, 3 - 40 MHz, OD 57.15 mm

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Stock: 39 pcs

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€14,90
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Order code: T200-2

Micrometals T200-2

Iron powder toroid core, 0.25 - 20 MHz, OD 50.8 mm

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Stock: 1377 pcs

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€6,79
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Order code: T200-2B

Micrometals T200-2B

Iron powder toroid core, 0.25 - 20 MHz, OD 50.8 mm

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Stock: 66 pcs

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€9,87
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Order code: T200-6

Micrometals T200-6

Iron powder toroid core, 3 - 40 MHz, OD 50.8 mm

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Stock: 1044 pcs

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€13,75
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Order code: T225-2B

Micrometals T225-2B

Iron powder toroid core, 0.25 - 20 MHz, OD 57.15 mm

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Stock: 55 pcs On order: 120

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€12,92
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Order code: T225-2

Micrometals T225-2

Iron powder toroid core, 0.25 - 20 MHz, OD 57.2 mm

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Stock: 530 pcs

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€7,19
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Order code: T300-2

Micrometals T300-2

Iron powder toroid core, 0.25 - 20 MHz, OD 77.2 mm

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Stock: 169 pcs

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€10,52
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Showing 41 - 80 of 83 results
More information

Micrometals Iron Powder Toroids – Selection Guide

Micrometals iron powder toroids are essential components for RF applications, filters, baluns, and inductors. This guide will help you choose the right model for your needs.

Comparison Infographic

Micrometals Iron Powder Toroids – Selection Guide

How to Choose the Right Toroid

  • Operating Frequency: Each mix is optimized for a specific frequency range.
  • Size: Indicated by the code (e.g., T50-2 = 0.50” diameter, mix #2).
  • AL Value: Useful for calculating the desired inductance.

Micrometals Materials Table

Material Reference
Permeability
Powder Type Temp Coefficient
of Perm (+ppm/°C)
Density
(g/cm³)
Max Frequency
(MHz)
Color Code
Toroid
-0 1 Phenolic N/A N/A N/A Tan/Tan
-1 20 Carbonyl Iron 280 6.4 10 Blue/Clear
-2 10 Carbonyl Iron 95 5.0 45 Red/Clear
-3 35 Carbonyl Iron 255 6.5 5.0 Gray/Clear
-5 5 Carbonyl Iron 280 5.0 10 Green/Clear
-6 8.5 Carbonyl Iron 35 5.0 55 Yellow/Clear
-7 9 Carbonyl Iron 30 5.0 50 White/Clear
-8 35 Carbonyl Iron 255 6.5 5.0 Yellow/Red
-10 6 Carbonyl Iron 150 4.9 83 Black/Clear
-15 25 Carbonyl Iron 190 6.4 7.0 Red/White
-17 4 Carbonyl Iron 50 4.8 170 Blue/Yellow

Materials ‑2, ‑5, ‑6, and ‑7

These are the most popular carbonyl iron mixes. They offer a high Q up to 40 MHz and are widely used in amateur radio and various communication applications. They are also suitable for moderate-band transformers operating in the 200 to 400 MHz frequency range.

Materials ‑1, ‑3, ‑8, and ‑15

These materials are annealed carbonyl irons with the highest permeability among carbonyl types. They are ideal for high Q applications below 1 MHz and for broadband transformers typically covering the 50 to 500 MHz range.

Materials ‑10 and ‑17

These are the highest frequency carbonyl iron materials . They provide a high Q up to 150 MHz and are commonly used in cable television applications . They are also suitable for moderate-band transformers operating between 400 and 700 MHz .

Material ‑0

This is a non-magnetic material used as a solid winding form for air-core coils. It offers excellent temperature stability and a high Q at the highest frequencies . It is also useful for moderate-band transformer applications typically covering the 600 MHz to 1 GHz range.

Example Products

  • T25-2: 0.25–20 MHz – ideal for HF baluns
  • T30-6: 3–40 MHz – great for RF filters
  • T37-17: 20–200 MHz – for VHF circuits

Inductance Calculation

Use the following formula to calculate inductance:

  L = AL × (N² / 100²)

Where L is the inductance in µH, AL is the toroid's AL value, and N is the number of turns.