Power Transformer, High Frequency Transformer, Efd Core Transformer for Audio

Name:

Power Transformer,High Frequency Transformer,EFD Core Transformer for Audio



EFD type Transformer Parameters

Brand Name;	GREWIN Transformer	Core structure;	lamination	Coil number;	Autotransformer
Place of Origin;	China	Coil Material;	ferrite	Coil Structure;	toroidal
Usage;	High Frequency	Model ;	EFD049	Phase;	single
Application;	High-frequency switching power supply and High-frequency inverter power transformer. PBX
Deliver time;	Within 15 working days		Package;	Customized standard cartons
ATTENTION;	YOU CAN CUSTOMIZED ALL SERIERS ACCORDING TO YOUR REQUERMENT

 

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

 
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: EE type Transformer Parameters

EE type transformer
Part No.	Terminal   Pins	Dimension mm			Type	Electrical parameter
		A	B	C		Inductance	Output power(W)
EE-8.3	6	8.0	8.0	8.3	V	100.0uH	0.2-3.0
EE-10	8	11.5	10.2	10.2	V	80.0uH	0.5-5.0
EE-13	10	12.0	12.5	13.0	V	120.0uH	0.5-8.0
EE-16-1	6	14.8	13.3	16.0	V	90.0uH	1.0-10.0
EEL-16	10	28.5	16.0	21.9	V	600.0uH	2.0-15.0
EE-19-1	8	17.6	16.0	19.0	V	800.0uH	3.0-30.0
EEL19	10	31.5	16.0	21.1	V	1200.0uH	3.0-30.0
EE-25-1	6	20.0	18.2	25.2	V	2000.0uH	3.0-45.0
EEL25	8	35.3	17.5	25.2	V	2800.0uH	3.0-45.0
EE-30	10	21.0	29.2	30.0	H	900.0uH	3.0-50.0
EE-40	14	27.6	30.5	40.0	H	1500.0uH	3.0-55.0
EE-42/15-1	12	33.8	44.0	42.0	H	2000.0uH	3.0-80.0
EE-42/20-1	12	45.0	39.8	42.0	V	1900.0uH	3.0-90.0
EE-55	20	50.0	50.0	55.0	H	3000.0uH	3.0-150.0
EE-65	16	55.2	51.8	65.0	H	4500.0uH	3.0-300.0

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

ER Transformer Specification
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

COILFORMER DIMENSIONS (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)product procedure:

The following picture showed you about GREWIN and production line and
electronic exhibition :






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


4).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.

5).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:

Cathy Tianjin Grewin Technology Co.,Ltd. Tel: 86-22-84943756 MT:86-15127622290 Website: http://www.grewin-tech.com http://grewin-tech.en.alibaba.com