{"id":13351,"date":"2025-05-03T16:12:22","date_gmt":"2025-05-03T06:12:22","guid":{"rendered":"https:\/\/amateurradiosupplies.com.au\/?post_type=product&#038;p=13351"},"modified":"2026-02-11T15:06:31","modified_gmt":"2026-02-11T04:06:31","slug":"fair-rite-ft240-77-ferrite-toroid-ui2000","status":"publish","type":"product","link":"https:\/\/amateurradiosupplies.com.au\/index.php\/product\/fair-rite-ft240-77-ferrite-toroid-ui2000\/","title":{"rendered":"Fair Rite FT240-77 Ferrite Toroid ui=2000"},"content":{"rendered":"<p><strong>NOTE: SOLD OUT ON BACK ORDER<\/strong><\/p>\n<p>FT240-77: Ferrite toroid&#8217;s can be used as common mode choke, impedance transformer or balun<\/p>\n<p>Common mode choke:<br \/>\n77 Material is a good wide band common mode suppression solution in the low frequency range from 100 kHz up to 10 MHz. If you use multiple cable turns around the ring core, the suppression will increase while the frequency will decrees. Single turn frequency range 1 MHz \u2013 10 MHz. Multiple turns 100 kHz \u2013 5 MHz.<\/p>\n<p>Wide band transformer:<br \/>\nYou can make excellent impedance transformers in the frequency range from 0,5 up to 8 MHz. Typical applications are 160 \u2013 40 meter impedance transformers or 1:1 Balun\u2019s in the same low frequency range.<\/p>\n<p>Specifications:<br \/>\nInitial Permeability: \u00b5i 2000<br \/>\nFlux Density @ Field strength:\tB (H) \/\t5100 (5) Gauss Oersted<br \/>\nAL: 2590nH \u00b1 25%<br \/>\nFrequency range: 0.1 \u2013 10 MHz (wideband transformer, depends on the application)<br \/>\nMaximum RF power: 100-200W (2-30 MHz Bal-Un transformer)<br \/>\nCurie temperature: &gt;200\u00b0C<br \/>\nMaterial number: 77<br \/>\nInside diameter: (ID) 35.5mm<br \/>\nOutside diameter: (OD) 61mm<br \/>\nHeight: 12.7mm<br \/>\nMaterial color code: black \/ grey<br \/>\nTemperature Coefficient of Initial Permeability: (20 -70\u00b0C) 1.2\t\/ %\/\u00b0C<br \/>\nResistivity: \u03c1 \/ 100 \/\tOhm-cm<br \/>\nWeight:\t107 g<br \/>\nDimensions: 6,1 x 3,55 x 1,27 cm<\/p>\n<p>Usable frequency ranges, depending on the application:<br \/>\n1:1 transformers (Balun): 0.5 \u2013 8 MHz<br \/>\nRFI \/ EMI \/ CMC suppression: 100 KHz to 10 MHz<\/p>\n<p>Suitable for high power balun up to 1 kW:<br \/>\nEMI\/RFI suppression: &lt;10 MHz<br \/>\nInductive: &lt;1.5 MHz<br \/>\nPower magnetics: 0.1 MHz<\/p>\n","protected":false},"excerpt":{"rendered":"<p>NOTE: SOLD OUT ON BACK ORDER FT240-77: Ferrite toroid&#8217;s can be used as common mode choke, impedance transformer or balun [&hellip;]<\/p>\n","protected":false},"featured_media":13389,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[15],"product_tag":[],"class_list":{"0":"post-13351","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-uncategorized","8":"first","9":"instock","10":"shipping-taxable","11":"purchasable","12":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/amateurradiosupplies.com.au\/index.php\/wp-json\/wp\/v2\/product\/13351","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/amateurradiosupplies.com.au\/index.php\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/amateurradiosupplies.com.au\/index.php\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/amateurradiosupplies.com.au\/index.php\/wp-json\/wp\/v2\/comments?post=13351"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/amateurradiosupplies.com.au\/index.php\/wp-json\/wp\/v2\/media\/13389"}],"wp:attachment":[{"href":"https:\/\/amateurradiosupplies.com.au\/index.php\/wp-json\/wp\/v2\/media?parent=13351"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/amateurradiosupplies.com.au\/index.php\/wp-json\/wp\/v2\/product_brand?post=13351"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/amateurradiosupplies.com.au\/index.php\/wp-json\/wp\/v2\/product_cat?post=13351"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/amateurradiosupplies.com.au\/index.php\/wp-json\/wp\/v2\/product_tag?post=13351"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}