Features:
1.Supply high voltage and withstand voltage
2.Operation frequency range from 40 to 80 KHz
3.Deliver Output Power from 1.5 to 25 watts
4.Slim or low profile Type easily built in your design
5.Available in through-hole and SMT recess or gull wing type
6.Operate in Royer , direct IC drive and other topologies
» APPLICATIONS: Mag
Applicable to light up cold cathodes fluorescent lamp of display.
Such as PCB, DSC, PDA, Scanner, Car Navigation, Notebook PC, LCD monitor and LCD TV
Feature of er28 transformer
1) Export power range from 0.5W -- 50W
2) High efficiency and low temperature rising
3) High frequency
4) Great power densities
5) Serious technology
6) Effective insulation
er28 transformer type and size (example)
| P/N | Bobbin | Shape Size | P/N | Bobbin | Shape Size | |
| RM4 | (3+3PIN)2S | 12.6/10.8/10.4 | EI10 | 4+4PIN | 2.50/8.00 | |
| RM14 | 6+6PIN | 42/41.5/30.1 | EI40 | 6+6PIN | 5.00/22.50 | |
| P/N | Bobbin | Shape Size | EE08 | 2+2PIN | 5.00/6.75 | |
| EFD15 | 4+4PIN | 3.75/13.80 | EE55 | 7+7PIN | 5.00/39.40 | |
| EFD40 | 8+8PIN | 5.00/35.00 | ER28 | 6+6PIN | 5.00/17.50 | |
| EPC13 | (5+5PIN)4S | 2.50/10.50 | ER42 | 8+8PIN | 5.00/35.00 | |
| EPC46.5 | (9+9PIN) | 5.00/35.00 | EE12.6 | SMD(10PIN) | 2.50/17.70 | |
| PQ2016 | 6+8PIN | 2.50/3.80/20.60 | EE19 | SMD(10PIN)6S | 2.50/14.30 | |
| PQ4040 | 6+6PIN | 5.08/15.20/38.10 | EEL18 | SMD(10PIN) | 23.30/50.40 | |
| EL16 | 4+6PIN | 2.70/3.50/12.00 | EEL22 | SMD(3PIN) | 12.50/14.40 | |
| EEL19 | 4+6PIN | 2.70/3.50/12.00 | EFD12 | SMD(8PIN) | 3.00/20.00 | |
| ETD29 | 6+6PIN | 5.00/25.80 | EFD30 | SMD(11PIN) | 3.02/8.05/44.32 | |
| ETD59 | 13+13PIN | 5.08/20.80 | EPC13 | SMD(10PIN) | 2.50/19.60 | |
| EF12 | 5+5PIN | 2.50/10.20 | EPC25 | SMD(12PIN)5S | 3.75/29.70 | |
| EF30 | 6+6PIN | 5.00/25.00 | ER11.5 | SMD(10PIN) | 2.00/12.00 | |
| EF25 | 5+5PIN | 5.00/20.00 | ER14.5 | SMD(10PIN) | 2.50/16.00 |
Specification limit of er28 transformer cores
er28 transformer Material characteristics-R2.0K
| Low Power Loss Mn-Zn Ferrites Series | ||||||||||||||||
| Material Characteristics | Unit | R2.5K | R2.3K | R3K | R2K | |||||||||||
| Initial Permeability | 2500 ±25% | 2300 ±25% | 3000 ±25% | 2000 ±25% | ||||||||||||
| Bs Saturation Magnetic Flux Density @ H=1194A/m | 23°C | mT | 510 | 510 | 470 | 400 | ||||||||||
| 100°C | mT | 400 | 390 | 370 | 300 | |||||||||||
| Br Remanence Fulx Density | 23°C | mT | 117 | 95 | 120 | 130 | ||||||||||
| 100°C | mT | — | — | 85 | 60 | |||||||||||
| Hc Effective Coercivity | 23°C | A/m | 12 | 14.3 | 12 | 18 | ||||||||||
| 100°C | A/m | — | — | 7 | 10 | |||||||||||
| Tanδ/μi Relative Loss Factor@f=100KHZ | ×10-6 | — | — | — | ||||||||||||
| Tc Curie Temperature | °C | >220 | >220 | >190 | >220 | |||||||||||
| ρ Electrical Resistivity | Ω.m | 10 | 6.5 | 3 | 6.4 | |||||||||||
| d Density | Kg/m3 | 4.8 | 4.8 | 4.8 | 4.7 | |||||||||||
| Pc Power Loss | 25KHZ 200mT pcv | 25°C | KW/m3 | 130 | 110 | 160 | ||||||||||
| 60°C | 90 | 75 | — | |||||||||||||
| 100°C | 100 | 70 | 160 | |||||||||||||
| 100KHZ 200mT pcv | 25°C | KW/m3 | 700 | 600 | — | 750 | ||||||||||
| 60°C | 500 | 500 | — | |||||||||||||
| 100°C | 600 | 410 | — | 850 | ||||||||||||
| 120°C | — | 500 | — | |||||||||||||
| 300KHZ 100mT pcv | 25°C | KW/m3 | 660 | — | — | |||||||||||
| 60°C | — | — | — | |||||||||||||
| 100°C | 430 | — | — | |||||||||||||
| 120°C | — | — | — | |||||||||||||
| 500KHZ 50mT pcv | 25°C | KW/m3 | — | — | — | 220 | ||||||||||
| 60°C | — | — | — | |||||||||||||
| 100°C | — | — | — | 250 | ||||||||||||
| 120°C | — | — | — | |||||||||||||
er28 transformer Application
Game machiines,Copy machine,Vcrs.
Printers,Terminals,TV sets,Microcomputer equipments.
Power Module,Switch Power and Adapter.
Telephone Communication Control equipments.
Chargers for Tablets, Mobile phone,Electric Toys .
UPS,DVD,VCD Players,Audio and Vedio equipments.
Various types of transformers available, CI, UI, EFD,EP, ER, EPC, POT, RM, EE
High Frequency transformer suitable for EL/CCFL Inverter or DC/DC converter
Customer's designs are welcome
EC28 EC35 EC41 EC42 EC52 EC70 transformer Core type
Ve
(mm3)Ae
(mm2)Mass
(g)Brand EC35
6530
84.3
19
HT EC41
10800
121
30
HT EC52
18800
180
56
HT EC70
40100
279
127
HT 
Characteristics &Application Rang:
ER series feature low loss, high output power, high operating frequency, low temperature and stable performance. They are widely used in power supplies of TV sets, displays, switching supplies and navigation.
PART NO. & DIMENSIONS LINE:
| Part NO. | THRMINAL PINS | Dimensions in mm(inches) | TYPE | |||||
| A | B | C±0.5 | D±0.5 | E±0.5 | F | |||
| HT-EER25.5 | 8 | 19.5 | 19.7 | 12.5 | 4 | 5 | 25.5 | V |
| HT-EER28 | 12 | 30.5 | 23 | 17.5 | 4 | 5 | 31 | V |
| HT-EER28 | 12 | 23.1 | 28.2 | 25 | 4 | 5 | 29.1 | H |
| HT-EER28 | 12 | 36 | 27 | 20 | 4 | 5 | 30 | V |
| HT-EER28 | 12 | 26.3 | 37.1 | 30 | 4 | 5 | 30.2 | H |
| HT-EER33 | 14 | 37.5 | 28 | 22.5 | 4 | 5 | 36 | V |
| HT-EER35 | 14 | 43.5 | 28 | 22.5 | 4 | 5 | 35.5 | V |
| HT-EER35 | 16 | 29.1 | 40.3 | 35.4 | 4 | 5 | 40.3 | H |
| HT-EER39 | 16 | 46 | 31.1 | 25 | 4 | 5 | 43.1 | V |
| HT-EER39 | 16 | 33 | 41.5 | 30.85 | 4 | 7.5 | 42.3 | H |
| HT-EER40 | 16 | 48 | 31.1 | 25 | 4 | 5 | 43.1 | V |
| HT-EER4215 | 14 | 45.5 | 30 | 25 | 5 | 5 | 42 | V |
| HT-EER4220 | 14 | 44 | 37.5 | 36 | 5 | 5 | 42 | V |
Product Culture
Payment & Shipping TermsSupply Capacity
| Unit Price: | 0.24~0.55 USD | Production Capacity: | 10000/day |
| Payment Term: | T/T | Packing: | CASE |
| MOQ: | 1000 Pack/Packs | Delivery Date: | 15-30day |
| Means of Transport: | Land, Ocean, Air |
EC28 EC35 EC39 EC41 EC42 EC52 EC70 transformer
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ER14.5 ER20 ER25 EC25 ER28 EC28 ER33 ER35 ERL35 ER39 ERL39 ER40 ER42 ER49 ER54 ER59 ER59 High frequency transformer:
ER14.5 ER20 ER25 EC25 ER28 EC28 ER33 ER35 ERL35 ER39 ERL39 ER40 ER42 ER49 ER54 ER59 ER59 High frequency transformer,hf transformer features:
