--- product_id: 170028338 title: "20sets EE25 with 4+4pin Bobbin Electronics Inductor Ferrite Core Transformer Core Chokes Ferrite Bead MnZn PC40" brand: "hondark" price: "£17.74" currency: GBP in_stock: true reviews_count: 3 category: "Hondark" url: https://www.desertcart.co.uk/products/170028338-20sets-ee25-with-4-4pin-bobbin-electronics-inductor-ferrite-core store_origin: GB region: United Kingdom --- # 1A saturation current standard, 9A air-gapped Precision 25.7x20.3x6.3mm core size 105µH inductance at 9 turns 20sets EE25 with 4+4pin Bobbin Electronics Inductor Ferrite Core Transformer Core Chokes Ferrite Bead MnZn PC40 **Brand:** hondark **Price:** £17.74 **Availability:** ✅ In Stock ## Summary > ⚙️ Elevate your electronics with precision cores that mean business ## Quick Answers - **What is this?** 20sets EE25 with 4+4pin Bobbin Electronics Inductor Ferrite Core Transformer Core Chokes Ferrite Bead MnZn PC40 by hondark - **How much does it cost?** £17.74 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/170028338-20sets-ee25-with-4-4pin-bobbin-electronics-inductor-ferrite-core) ## Best For - hondark enthusiasts ## Why This Product - Trusted hondark brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact Powerhouse:** Optimized EE25 ferrite core fits perfectly in tight PCB layouts - • **Tailored Inductance:** Customizable inductance from 17µH to 400µH by adjusting coil turns - • **Bulk Pack Convenience:** 20 individually wrapped sets for seamless prototyping and production - • **High Saturation Threshold:** Handles up to 9A with air-gapped design for demanding circuits - • **Premium MnZn PC40 Material:** Ensures low core loss and high magnetic permeability for efficiency ## Overview The 20sets EE25 with 4+4pin Bobbin Electronics Inductor Ferrite Core Transformer Core Chokes Ferrite Bead MnZn PC40 is a high-quality, rectangular ferrite core designed for through-hole mounting. Measuring 25.7 x 20.3 x 6.3mm, it features a 6.2 x 6.2mm core center area and supports inductance values from 17µH to 400µH depending on coil turns. Made from premium MnZn PC40 ferrite material, it offers low core loss and high saturation currents up to 9A with air-gapping, making it ideal for efficient, compact, and reliable inductors in professional electronic applications. Each pack includes 20 individually wrapped sets, perfect for prototyping or production runs. ## Description inductor ferrite core /isolator ferrite /chokes ferrite bead Review: Arrived with no broken pieces, well packaged - 20 sets, each wrapped individually. Core without bobbin measured at: (L x W x H) 25.7 x 20.3 x 6.3mm Core center is 6.2 x 6.2mm (Area 38mm^2) Electrical measurement for reference if you want to wound your own coil: 9 turns of wire: 105uH, saturation at 1A 9 turns of wire, air gapped at 0.15mm (About two paper thickness): 17uH, saturation 9A Note, double of turns causes square of inductance. Thus, for example, 18 turns of wire will result in an inductor of 400uH and half of the saturation current (0.5A). Review: Transformer core - The item was just as I expected ; THANKS ## Features - 1.Model:inductor ferrite core /chokes ferrite bead - 2.Part number : EE25 with 4+4pin vertical bobbin - 3.Size:width=25mm - 4.Material: MnZn PC40 - 5.Package:20sets each pack ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07PTSDYG3 | | Best Sellers Rank | #442,567 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #79 in Industrial Electrical Inductors | | Brand | Hondark | | Brand Name | Hondark | | Customer Reviews | 4.8 out of 5 stars 7 Reviews | | Item Shape | Rectangular | | Manufacturer | Hondark HK Limited | | Material | ferrite | | Material Type | ferrite | | Mounting Type | Through-Hole Mount | | Shape | Rectangular | | UPC | 303621183931 | | Unit Count | 20.0 Count | ## Product Details - **Brand:** Hondark - **Manufacturer:** Hondark HK Limited - **Material:** ferrite - **Mounting Type:** Through-Hole Mount - **Shape:** Rectangular ## Images ![20sets EE25 with 4+4pin Bobbin Electronics Inductor Ferrite Core Transformer Core Chokes Ferrite Bead MnZn PC40 - Image 1](https://m.media-amazon.com/images/I/41APcoMW-DL.jpg) ![20sets EE25 with 4+4pin Bobbin Electronics Inductor Ferrite Core Transformer Core Chokes Ferrite Bead MnZn PC40 - Image 2](https://m.media-amazon.com/images/I/41gr3+h8DNL.jpg) ![20sets EE25 with 4+4pin Bobbin Electronics Inductor Ferrite Core Transformer Core Chokes Ferrite Bead MnZn PC40 - Image 3](https://m.media-amazon.com/images/I/41RudwYu8fL.jpg) ![20sets EE25 with 4+4pin Bobbin Electronics Inductor Ferrite Core Transformer Core Chokes Ferrite Bead MnZn PC40 - Image 4](https://m.media-amazon.com/images/I/41HZ80NAQbL.jpg) ![20sets EE25 with 4+4pin Bobbin Electronics Inductor Ferrite Core Transformer Core Chokes Ferrite Bead MnZn PC40 - Image 5](https://m.media-amazon.com/images/I/41c2UoFSgDL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Arrived with no broken pieces, well packaged *by R***. on November 13, 2020* 20 sets, each wrapped individually. Core without bobbin measured at: (L x W x H) 25.7 x 20.3 x 6.3mm Core center is 6.2 x 6.2mm (Area 38mm^2) Electrical measurement for reference if you want to wound your own coil: 9 turns of wire: 105uH, saturation at 1A 9 turns of wire, air gapped at 0.15mm (About two paper thickness): 17uH, saturation 9A Note, double of turns causes square of inductance. Thus, for example, 18 turns of wire will result in an inductor of 400uH and half of the saturation current (0.5A). ### ⭐⭐⭐⭐ Transformer core *by M***S on June 10, 2020* The item was just as I expected ; THANKS ### ⭐⭐⭐⭐⭐ Good seller *by A***A on July 10, 2020* Haven't tested yet, but appear to be of good quality. excellent packaging. All 20 arrived in one piece where other sellers would arrive damaged from transit. ## Frequently Bought Together - 20sets EE25 with 4+4pin Bobbin Electronics Inductor Ferrite Core Transformer Core Chokes Ferrite Bead MnZn PC40 - BNTECHGO 30 AWG Magnet Wire - Enameled Copper Wire - Enameled Magnet Winding Wire - 4 oz - 0.0098" Diameter 1 Spool Coil Red Temperature Rating 155℃ Widely Used for Transformers Inductors --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/170028338-20sets-ee25-with-4-4pin-bobbin-electronics-inductor-ferrite-core](https://www.desertcart.co.uk/products/170028338-20sets-ee25-with-4-4pin-bobbin-electronics-inductor-ferrite-core) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-07-05*