AliExpress Ferrite toroid information and Shops

Informatie over enkele ALI ontstoor ringkernen, meestal groen. Vele Philips e.a. ook erbij ter vergelijk.
De L in de tabel hieronder is gemeten met de Mastech LCR meter met N = 10. AL is dan 10x de gemeten uH waarde.
AL is in nH/winding of mH/1000 windingen
Met DL5SWB software is daaruit de materiaal ui waarde berekend.

Na de ontdekking van de rekenkundige truc met N = 10 en een RCL meter om een direct aanwijsbare ferriet AL meter te verkrijgen, is dit gemeld aan de redactie van Elektor die er direct een artikel aan besteed heeft.
De lage meet frequentie bij zo'n RCL-meter - 1 kHz, 10 kHz en soms voor lage AL ook 100 kHz - is ideaal om te meten in het "rechte" aanvangs deel van de ui karakteristiek.
Het is absoluut FOUT om ferriet kernen te meten met een HF oscillator of aan een dipper, zoals anderen deden!!!
In dit artikel kun je het Eureka-moment van PE1ABR in Elektor nalezen, voor meer achtergrond info over een direct aanwijzende AL meter. Ook beschikbaar in PDF in de internationale Elektor versies!!   UK,   FrankrijkDuitsland.

====================

Information about some ALI interference suppression toroids, usually green. Lots of Philips et al. for comparison.
Dutch decimal is used. The L in the table below is measured with the Mastech LCR meter with N = 10. AL = 10x measured uH value.
AL is in nH/turn or mH/1000 turns
The material ui value was calculated from this using DL5SWB software.

After discovering the arithmetic trick using N = 10 and an RCL meter to obtain a directly identifiable ferrite AL meter, this was reported to the editors of Elektor, who immediately wrote an article about it.
The low measuring frequency of such an RCL meter - 1 kHz, 10 kHz and sometimes for low AL also 100 kHz - is ideal for measuring in the "straight" initial part of the ui characteristic.
It is absolutely WRONG to measure ferrite cores with an HF oscillator or on a dipper, as others did!!!
In this Dutch article you can read the Eureka moment of PE1ABR in Elektor for more background information about a direct indicating AL meter. PDF also available in the international Elektor versions!!   UK version,   French,  and in German.


maat / dimensions
in mm

Shop link
AL @ 1 kHz

Q
AL @ 10 kHz

Q
AL @ 100 kHz

Q
average / gemiddelde ui
na de top / after peak
inzakkende Q ==> uii gaat omhoog
collapsing Q ==> uii goes up
80x51x20,5

Shop link expensive!
3395

29
3387

125
3407

71
1882 @ AL=3390
64x37x26

Shop link expensive!
12310

13,8
12256

92,3
12793

14,6
+/- 4400 (@ AL=12250)
51x30x20,5

Shop link expensive!
3769

34
3771

136
3768

93
+/- 1785
36x23x15
3C11

Philips-Ferroxcube
6195

60
6189

115
6311

34
+/- 4820 (@ 10 kHz)
36x23x15,5
ali clone 3C11

Shop link
5542

52
5544

119
5560

43
+/- 4181
ali clone 3C11
Huge second order
same shop as above
5898

68
5881

110
5983

28,4
+/- 4444
10x6x5,5

Shop 2017 tool store
sold out
1981

30
1994

38,6
1989

20,6
+/- 4100

usable as a 3C11 clone
Q ok !
22,5x13,5x8,5

Shop link
2947

42
2970

70
2969

33
+/- 3672
25x14,5x14

Shop link
14560

39
14392

21
13050

2,88
+/- 9700 (@ AL=14000)
lossy
25x14,5x14

second order
14518

28,9
14268

14,6
11303

2
+/- 9700 (@ AL=14000)
lossy
18x10x7,5

Shop link
23350

4,41
18038

3,4
6705

0,9
+/- 22142
very lossy
10x5,5x5

Shop link
12670

2,78
9960

2,57
4896

1,5
+/- 19222 (@ AL=10000)
very lossy
8,5x3,5x3

Shop link
10670

2,8
9234

2,35
4478

1,65
+/- 22100 (@ AL=10000)
very lossy
-
-
-
-
-
38x18,8x12,7 type F
NO coating
Magnetics 43813-TC
Shop Quackelstein
2017 Ferrite Catalog
5382

50
5376

107
5412

34
3008 (@ 10 kHz)

22,6x13,3x12,8 type F
Magnetics ZF-42212-TC grey
Shop Rosmalen
2022 Ferrite Catalog
3502

45
3494

135
3495

84
2749 (@ 10 kHz)

-
-
-
-
-
25,5x15x21 new
Conrad dual core 534480
Shop link wrong image
10695

56
10636

69
10605

25
5018 (@ 10 kHz)

nieuwe vormgeving / new model
26x13,5x20
Conrad single core 534480 with plastic jacket
Shop link old version
11850

42
11750

22,5
10411

3,15
4482 (@ 10 kHz)

old model
Lots of Philips/Ferroxcube toroids

Catalog for ALL Ferroxcube materials
-
-
-
PSG Product selection guide for ALL Ferroxcube materials, one page is missing!

missing page from previous PSG
TN 25x15x10
3E5 yellow-white
Philips-Ferroxcube
8857

51
8824

51
8925

7,5
+/- 8190
36x22,5x15
3E25 orange
Philips-Ferroxcube
Shop link
7557

66
7549

100
7748

19,4
+/- 5599
36x23x15
3C11

Philips-Ferroxcube
6195

60
6189

115
6311

34
+/- 4820 (@ 10 kHz)

copy from above
36,5x22x15,5
3E1 groen/green

Philips-Ferroxcube
3386

38
3382

120
3388

48
+/- 2246 (@ AL=3380)
36x23x15
sold as 3S1, but is 3S4 !
Philips-Ferroxcube
NO coating
2516

42
2507

54
2465

24
+/- 1860

This value complies to 3S4,
and NOT 3S1
33x19x13
3F3 blue
Philips-Ferroxcube
Shop link
1902

24
1904

130
1895

135
+/- 1387

compatible with FTxx-77
24x13,3x7,7 = TN23/14/7
4A11 pink
Philips-Ferroxcube
504

29
498

67
492

71
+/- 648

factory ui = 700, AL=485

compatible with FTxx-43
28,7x19x7,5 = TN29/19/7,5
4S2 uncoated
Philips-Ferroxcube
406

15,8
401

45
393

38
+/- 648

factory ui = 850, AL=?
36x22,5x15,5
4C65 violet
Philips-Ferroxcube
Shop link
161

2,04
158,7

17,7
158

84
+/- 113

compatible with FTxx-61
28x16x13 4C6 clone
TDK HF40 - T28x13x16
from Brigatti shop
189

2,5
188

23
188

100
+/- 129


compatible with FTxx-61
High loss (damping) metal powder cores for DC PSU
-
-
-
-
33x20x11 (+/- T130)
Magnetics 55548-A2
grey PSU inductor
2020 powder core Catalog
127

1,8
128

17,5
127

31
+/- 121

NO ferrite ==> metal powder
79% Ni, 17% Fe, 4% Mo
27x14,5x11,5
Micrometals T106-52
pale green-blue
PSU inductor
2007 powder core Catalog
91

1,5
92

13,5
91

32
+/- 67
factory ui = 75, AL=95
NO ferrite ==> metal powder
Very low loss RF iron (Amidon) powder cores
Micrometals Txx-2 RF toroids Catalog or 2007 link above
-
-
-
And for ALL Fair-Rite (Amidon) FTxx-y ferrite toroids here the backup manual
20,5x12,5x6,5

T80-2
7

0,17
6,8

1,6
6,8

14

11,5

factory ui=10, AL = 5,5
24,5x14x8,4

T94-2
11

0,22
11

2,2
11

18

12,3

factory ui=10, AL = 8,4
33,5x19,5x11,5

T130-2
12

0,19
12

1,9
12

19

10,1

factory ui=10, AL = 11
40,5x24x15

T157-2
15

0,19
15

1,8
15

18

9,9

factory ui=10, AL = 14

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