TN36/23/15-3R1

Philips Components 

## Ferrite ring cores (toroids) 

## TN36/23/15 

## **RING CORES (TOROIDS)** 

## **Effective core parameters** 

|**SYMBOL**|**PARAMETER**|**VALUE**|**UNIT**|
|---|---|---|---|
|Σ(I/A)|core factor (C1)|0.935|mm−1|
|Ve|effective volume|8600|mm3|
|Ie|effective length|89.6|mm|
|Ae|effective area|95.9|mm2|
|m|mass of core|≈42|g|



## **Coating** 

The cores are coated with polyamide 11 (PA11), flame retardant in accordance with “UL 94V-2”. 

## **Isolation voltage** 

DC isolation voltage: 2000 V. 

Contacts are applied on the edge of the ring core, which is also the critical point for the winding operation. 

**==> picture [242 x 256] intentionally omitted <==**

**----- Start of picture text -----**<br>
36.9 ±0.9<br>handbook, halfpage<br>21.9 ±0.7<br>(≈0.3) coating PA11<br>����<br>15.7<br>±0.6<br>����<br>CBW300<br>Dimensions in mm.<br>Fig.1  TN36/23/15 ring core.<br>**----- End of picture text -----**<br>


## **Ring core data** 

|**GRADE**|**AL**<br>**(nH)**|µ**i**|**COLOUR CODE**|**TYPE NUMBER**|
|---|---|---|---|---|
|4C65|170±25%|≈125|violet|TN36/23/15-4C65|
|4A11|940±25%|≈700|uncoated|T36/23/15-4A11(1)|
|3R1|−|≈800|black|TN36/23/15-3R1(2)|
|3S4|2285±25%|≈1700|uncoated|T36/23/15-3S4(1)|
|3F3|2420±25%|≈1800|blue|TN36/23/15-3F3|
|3C85|2700±25%|≈2000|red|TN36/23/15-3C85|
|3C11|5800±25%|≈4300|white|TN36/23/15-3C11|
|3E25|7390±25%|≈5500|orange|TN36/23/15-3E25|
|3E5|11400±30%|≈8500|yellow/white|TL36/23/15-3E5(3)|



## **Notes** 

1. Uncoated ring cores have the following dimensions: outer dimension = 36 ±0.7 mm; inner dimension = 25 ±0.5 mm; height = 15 ±0.3 mm. 

2. Due to the rectangular BH-loop of grade 3R1, inductance values strongly depend on the magnetic state of the ring core and measuring conditions. Therefore no AL value is specified. For the application in magnetic amplifiers AL is not a critical parameter. 

3. Ring cores in grade 3E5 are lacquered (polyurethane) and have different dimensions: Outside diameter = 36.25 ±0.9 mm; inside diameter = 22.75 ±0.7 mm; height = 15.25 ±0.6 mm. 

## **WARNING** 

Do not use grade 3R1 cores close to their mechanical resonant frequency. For more information refer to “3R1” material specification in this data handbook. 

1997 Nov 21 

734 

Philips Components 

## Ferrite ring cores (toroids) 

## TN36/23/15 

## **Properties of cores under power conditions** 

|**GRADE**|**B (mT) at**|**CORE LOSS (W) at**|**CORE LOSS (W) at**|**CORE LOSS (W) at**|
|---|---|---|---|---|
||**H = 250 A/m;**<br>**f = 25 kHz;**<br>**T = 100**°**C**|**f = 25 kHz;**<br>**= 200 mT;**<br>**T = 100**°**C**<br>**B**ˆ|**f = 100 kHz;**<br>**= 100 mT;**<br>**T = 100**°**C**<br>**B**ˆ|**f = 400 kHz;**<br>**= 50 mT;**<br>**T = 100**°**C**<br>**B**ˆ|
|3C85|≥320|≤1.4|≤1.6|−|
|3F3|≥320|−|≤0.95|≤1.7|



1997 Nov 21 

735