.

Ferrite Core Transformer for DC-DC Converters

Name:

Ee High Frequency Transformer for PCB Circuits
EE type Transformer Parameters


BrandName;
GREWINTransformer Corestructure; lamination Coilnumber; Autotransformer
PlaceofOrigin; China CoilMaterial; ferrite Coilstructure; toroidal
Usage; HighFrequency Model: EE Phase; single
Application; High-frequencyswitchingpowersupplyandHigh-frequencyinverterpowertransformer.PBX
Delivertime; Within10workingdays Package; Customizedstandardcartons
ATTENTION; YOUCANCUSTOMIZEDALLSERIERSACCORDINGTOYOURREQUERMENT


Type
Core"E"Dimension
A(mm) B(mm) C(mm) D(mm) E(mm) F(mm)
EE13 12.6 6.5 4.5 3.7 8.9 3.7
EE14 14.3 7.8 5.2 4.3 10.5 4.5
EE16 16.0 8.2 5.7 4.7 11.3 4.7
EE20 20.4 10.1 7.0 5.9 14.1 5.9
EE25 25.0 12.8 8.7 7.5 17.5 7.5
EE30 30.0 15.2 9.7 7.2 19.5 7.3
EE32 32.0 16.4 11.2 9.5 22.7 9.5
EE36 36.0 18.0 12.0 10.2 24.5 11.5
EE42 42.0 21.0 14.8 17.2 29.5 15.2
EE55 55.0 27.8 18.5 17.2 37.5 21.0
EE65 65.0 32.8 22.2 20.0 44.2 27.4
EE70 70.5 33.2 21.9 22.0 48.0 32.0



1).Features:
Has a strong anti-interference, distributed capacitance, impedance, attenuation of low transmission, firm
structure,can fine-tune the inductance, etc., are widely used in fax
machines, PBX.


2). Applicable frequency range: 20 to 100kHz :
Operating frequency: higher than 200kHz
High magnetic flux and low loss magnetic materials
With low leakage inductance and high efficiency .


3).Applications:


PCB circuits, computer, TV, monitor, scanner, duplicator, mobile adapters, printer and other equipments and
instruments.
UL insulation system for Class B (130), F (155), H (180)


4). Can make other customized Ferrite transformers:
Power range: core type using N67 grade material
<5: RM4, P11/7, EF12.6 and U10
5 to 10: E (F) 16, RM5 and P14/8
10 to 20: RM6, E (F) 20, P18, U15 and EFD15
20 to 50: RM8, P22, RM10 ETD29, E25 and EFD20
50 to 100: ETD29, ETD34, RM12, P30 and EFD25
100 to 200: ETD34, ETD39, ETD44, P36, E30, E42 and EFD30
200 to 500: ETD44, ETD49 and E55
>500: ETD54, ETD59 and E65



Other Related High Frequency Transformer Parameters:

Table1: EFD type Transformer Parameters

Model Pin Dimension
A B C D E
EFD-12 8 6 17 20 3.0 13.5
EFD-15 10 7.3 18.2 21.35 2.5 15
EFD-15 10 7.5 19.3 22.6 3.0 16.7
EFD-20 10 9.4 25.3 27.7 3.75 21.7
EFD-20 12 9.7 24 26.8 3 20
EFD-25 10 13.4 29.7 35.4 5 25
EFD-25 10 12.6 29.7 31.5 5 25
EFD-30 12 12.6 31.6 35.5 5 30


Table2:EPC type Transformer Parameters


Model
Dimension (mm) VA Weight
A B C f=50KHz f=100KHz g
EPC-9.5 10 5.5 10 1.1 2.5 9
EPC-13 14 9 14 5 8 11
EPC-17 19 11 18 14 20 18
EPC-19 20 13 21 18 27 21
EPC-25 27 17 26 36 59 29
EPC-27 29 17 36 52 75 35


Table3: ER type Transformer Parameters

ERTransformerSpecification
Model PIN Dimension
A B C+/-0.5 D+/-0.5 E F
ER25.5 8 19.5 19.7 12.5 4 5 25.5
ER28 12 30.5 23 17.5 4 5 31
ER28 12 23.1 28.2 25 4 5 29.1
ER28 12 36 27 20 4 5 30
ER28 12 26.3 37.1 30 4 5 30.2
ER33 14 37.5 28 22.5 4 5 36
ER35 14 43.5 28 22.5 4 5 35.5
ER35 16 29.1 40.3 35.4 4 5 40.3
ER39 16 46 31.1 25 4 5 43.1
ER39 16 33 41.5 30.85 4 7.5 42.3
ER40 16 48 31.1 25 4 5 43.1
ER4215 14 45.5 30 25 4 5 42
ER4220 14 44 37.5 36 4 5 42


Table4: PQ type Transformer Parameters

COILFORMERDIMENSIONS(mm)

TYPE

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

PQ20/16

23.15

17.35

23.15

20.3

2.5

9

3.8

5.1

17.9

9.7

7.82

10.8

2.4

0.6

7.35

PQ20/20

23.15

17.35

23.15

20.3

2.5

9

3.8

5.1

22

13.85

12

10.8

2.4

0.6

7.35

PQ26/20

26.6

21.85

29.75

25.4

-

12.3

3.8

7.6

21.5

11.05

9

14.2

2.4

0.65

7.2

PQ26/25

26.6

21.85

29.75

25.4

-

12.3

3.8

7.6

26.05

15.65

13.55

14.2

2.4

0.65

7.2

PQ32/20

32.15

26.7

34.3

30.5

-

13.85

5.1

7.6

22.35

11.05

8.9

15.9

2.8

0.75

7.2

PQ32/30

32.15

26.7

34.3

30.5

-

13.85

5.1

7.6

32.15

20.85

18.7

15.9

2.8

0.75

7.2

PQ35/35

35.00

31.0

39.0

-

-

15

-

-

37.4

-

22.4

16.9

-

1

5





5)Advantage:
1.UL, CUL, CE, ISO9001:2008
2.We offer custom-made transformers, OEM and ODM are welcome
3.We deliver the quality you expect at consistently competitive prices
4.Transformer quality lifetime:10 Years.
5.Specialty Sales service:5 -10 Years
6.Transformers Test: 100% test before the shipment


About us:

1). Tianjin Grewin Technology Co.,ltd. has always laying great emphasis on our core business philosophy "Quality and Honesty First ".



2).Terms of Shipment:
Within 10 working days after received related prepayment or L/C.


3).Payment terms:
(1). T/T 100% or 50% deposit by T/T in advance, balance amount to be paid 7 days before
delivery.
(2). By irrevocable L/C at sight, to be issued immediately against confirmed order.
(3). Payment by T/T, if order amount is less than USD 20,000.

4).Flow chart of trading activities:


NO

Step

Days need

1

Request for quotation

1 day

2

Making quotations

1 day

3

Offer and counter offer

3 days

4

Sending and receiving samples

3-10 days

5

Sample confirmation

3 days

6

Placing a firm order

1 day

7

Paying and receiving the down payment

1-4 day

8

Factory production & Quality inspection

15-20 days

9

Paying and receiving the balance

4 days

10

Delivery of goods

1 days





PLZ Contact us:



Amy
Tianjin Grewin Technology Co.,Ltd.
Tel:
Mobile:
Website:


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