# CYLINDRICAL CORE, 9.95MM OD, 4.35MM ID

![Product image](https://novapart.co/image/farnell:3949152/)

**URL**: https://novapart.co/products/5976000221/cylindrical-core-995mm-od-435mm-id
**SKU**: 5976000221
**Manufacturer**: FAIR-RITE
**Category**: Transformers || Transformer Cores
**Price**: €0.9220
**Stock**: 10+
**Lead Time**: 158 days (indicative)

## Description

Core Type:Toroid; Core Size:9.95mm x 4.35mm x 3.55mm; Core Material Grade:76; For Use With:Power Input Filters, Ground Fault Interrupters, Common Mode Filters, 27AK3867

## Specifications

| Parameter | Value |
|---|---|
| Svhc | No SVHC (25-Jun-2025) |
| Core Size | 9.95mm x 4.35mm x 3.55mm |
| Core Type | Toroid |
| For Use With | Power Input Filters, Ground Fault Interrupters, Common Mode Filters, Pulse & Broadband Transformers |
| Product Range | - |
| Core Material Grade | 76 |
| Inductance Factor Al | 4.4µH |
| Effective Magnetic Path Length | 20.7mm |
| Ae Effective Cross Section Area | 7.3mm² |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:3949152/)

## Toroids (5976000221) 

Part Number: 5976000221 

76 TOROID PLASTIC COATED 

## Explanation of Part Numbers: 

– Digits 1 & 2 = Product Class 

– Digits 3 & 4 = Material Grade 

– 9th digit 1 = Parylene Coating, 2 = Thermo-Set Plastic Coating 

**A ring configuration provides the ultimate utilization of the intrinsic ferrite material properties. Toroidal cores are used in a wide variety of applications such as power input filters, ground-fault interrupters, common-mode filters and in pulse and broadband transformers.** 

All toroidal cores are supplied burnished to break sharp edges. 

## Coating Options: 

– Toroids with an outside diameter of 9.5 mm (0.375″) or smaller can be supplied Parylene C coated. The Parylene coating will increase the “A” and “C” dimensions and decrease the “B” dimension a maximum of 0.038 mm (0.0015″). The ninth digit of a Parylene coated toroid part number is a “1”. See reference tables for the material characteristics of Parylene C. Parylene C coating is RoHS compliant. 

– Toroids with an outside diameter of 9.5 mm (0.375″) or larger can be supplied with a uniform coating of thermo-set plastic coating. This coating will increase the “A” and “C” dimensions and decrease the “B” dimension a maximum of 0.5 mm (0.020″). The 9th digit of the thermo-set plastic coated toroid part number is a “2”. Thermo-set plastic coating is RoHS compliant. 

– Thermo-set plastic coated parts can withstand a minimum breakdown voltage of 1000 Vrms, uniformly applied across the “C” dimension of the toroid. 

**For any toroidal core requirement not listed in the catalog, please contact our customer service department for availability and pricing.** 

## Catalog Drawing 3D Model 

The C dimension may be modified to suit specific applications. 

## Weight: 0.83 (g) 

|Dim|mm|mm tol|nominal inch|inch misc.|
|---|---|---|---|---|
|A|9.95|Max|0.391|Max|
|B|4.35|Min|0.172|Min|
|C|3.55|Max|0.139|Max|



## **Chart Legend** 

Σl/A  :  Core Constant,    le :  Effective Path Length,    Ae :  Effective Cross-Sectional Area,    Ve :  Effective Core 

Volume 

AL :  Inductance Factor (i 

|Electrical Properties|Electrical Properties|
|---|---|
|AL(nH)|4400+30%, -35%|
|Ae(cm2)|0.073|
|Σl/A(cm-1)|28.6|
|le(cm)|2.07|
|Ve(cm3)|0.15|



Toroids are tested for AL values at 10 kHz. 

Fair-Rite Products Corp.   •   One Commercial Row, Wallkill, New York 12589-0288 888-324-7748   •   845-895-2055   •   Fax: 845-895-2629   •   ferrites@fair-rite.com   •   www.fair-rite.com 



## Links

- [View this product on Novapart](https://novapart.co/products/5976000221/cylindrical-core-995mm-od-435mm-id)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/fair-rite/5976000221/cylindrical-core-9-95mm-od-4-35mm/dp/3949152)
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