EFD Series 4 sections THT and SMD high frequency transformer EFD25,
EFD30,35
>>> Features
1. Custom design available
2. 120°C Maximum operating temperature
3. Resistance to soldering heat
4. 16 pins horizontal transformer
>>> Quick Details
Place of Origin: Guangdong, China (Mainland)
Brand Name: Greenfair, GFE, GE
Model Number: EFD11, EFD12, EFD13, EFD15, EFD16, EFD17, EFD18,
EFD20, EFD21, EFD25, EFD30, EFD32, EFD35,EFD36, EFD40.
Usage: High Frequency
Phase: Single
Coil Structure: Toroidal
Coil Number: Autotransformer
Color: Yellow
Size: Horizontal
Type: EE,EI ,EC,PQ,EFD,EPC,UU,R,RH,DR, etc
Core Grade: PC40, 3C90,TP4
Bobbin Material: Phenolic
| NO. | MATERIAL SPEC. | MARGINAL TAPE | TUBE TYPE | S--F | TURNS | WINDING
FASHION | ISOLATION BETWEEN WINDING |
| PIN1--8 | PIN9--18 | S | F |
| N1 | TEX-Eφ0.3mm | | | | TFL | 7--8 | 18 | CLOSE | |
| N2 | TEX-Eφ0.2mm | | | | | 5--6 | 18 | CLOSE | 1Ts |
| N3 | 2UEWφ0.15mm | 3mm | 3.5mm | TFL | | 1--3 | 29 | CLOSE | 1Ts |
| N4 | 2UEWφ0.15mm | 3.5mm | 3.5mm | | | 3--2 | 7 | CLOSE | 3Ts |
| N5 | 2UEWφ0.2mm | 3.5mm | 1.5mm | | TFL | 15--16 | 29 | CLOSE | 1Ts |
| N6 | 2UEWφ0.15mm | 3.5mm | 3mm | TFL | | 16--14 | 7 | CLOSE | 1Ts |
| N7 | 2UEWφ0.15mm | 3.5mm | 3mm | | TFL | 10--9 | 29 | CLOSE | 1Ts |
| N8 | 2UEWφ0.15mm | 3.5mm | 3mm | TFL | | 9--11 | 7 | CLOSE | 2Ts |
| NO. | ITEM | MEASURE POINT | TECHNICAL DATA | REMARK |
| 1 | IND | N1 | 118uH±10% | 1KHz 0.1V |
| 2 | IND | N2 | 105uH±10% | 1KHz 0.1V |
| 3 | IND | N3/N5/N7 | 307uH±10% | 1KHz 0.1V |
| 4 | IND | N4/N6/N8 | 18uH±10% | 1KHz 0.1V |
| 5 | LK | N1 | 4uH MAX | 1KHz 0.1V |
| 6 | CP | N1 | 25 PF MAX | 100KHz 1V |
| 7 | DCR (25℃) | R(N2)≤678mΩ;R(N3)≤1178mΩ;R(N4)≤284mΩ;R(N5)≤663mΩ;R(N6)≤284mΩ;R(10-9)≤128.5mΩ;R(N7)≤1178mΩ;R(N8)≤284mΩ; |
| 8 | HI-POT | N5,N6--N3,N4 | 4KVDC | 5mA1S |
| 9 | HI-POT | PRI--SEC | 4KVDC | 5mA1S |
It is recommended that the temperature of the part does not exceed
+125°C under worst case conditions.General information:
Storage Temperature: -40°C to 85°C
Operating Temperature: -40°C to 125°C
Test conditions of Electrical Properties: 20°C, 33% RH if not
specified differently
| OPERATING TEMPERATURE RANGE, PACKAGE QUANTITY, PRODUCT WEIGHT |
| Temperature range | Humidity range | Standard test conditions |
| Operating temperature* | Storage temperature | Operating temperature** | Storage temperature** | Operating temperature** | Storage temperature** |
| ( ℃) | ( ℃) | ( % RH) | ( % RH) | ( ℃) | ( % RH) |
| -30 to +120 | -40 to +80 | 10 to +95 | 10 to +95 | 25 ± 10 | 25 to +75 |
* With self-heating
** Maximum wet-bulb temperature 38°C, without dewing
*** Without dewing
