High-frequency transformers are mainly used as high-frequency switching power supply transformers in high-frequency switching power supplies, and are also used as high-frequency inverter power supply transformers in high-frequency inverter power supplies and high-frequency inverter welding machines. According to the working frequency, it can be divided into several frequency ranges: 10kHz-50kHz, 50kHz-100kHz, 100kHz~500kHz, 500kHz~1MHz, and above 1MHz. In the case of relatively large transmission power, power devices generally use IGBTs. Due to the tailing phenomenon of the turn-off current of the IGBT, the operating frequency is relatively low; if the transmission power is relatively small, MOSFETs can be used, and the operating frequency is relatively high.
ETD series high-frequency transformer for switching mode power supply
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Type | Structure | Dimension (mm) | PIN ROW 1(mm) | PIN ROW 2(mm) |
ROW Pitch
(mm) |
OD (PIN)
(mm) |
||||
A | B | C | PIN | PIN Pitch | PIN | PIN Pitch | ||||
ETD29-1 | Vertical | 37.0 | 26.0 | 43.0 | 6 | 5.0 | 6 | 5.0 | 20.3 | Φ0.6 |
ETD29-2 | Vertical | 37.0 | 25.0 | 37.0 | 7 | 5.0 | 7 | 5.0 | 17.5 | Φ0.6 |
ETD29-3 | Horizontal | 38.0 | 38.0 | 26.0 | 7 | 5.0 | 7 | 5.0 | 25.8 | Φ0.8 |
ETD29-4 | Horizontal | 38.0 | 38.0 | 26.0 | 6 | 5.0/10 | 7 | 5.0 | 25.8 | Φ0.8 |
ETD34-1 | Vertical | 36.0 | 31.0 | 40.0 | 6 | 5.0 | 6 | 5.0 | 25.0 | Φ0.8 |
ETD34-2 | Vertical | 43.0 | 32.0 | 41.0 | 8 | 5.0 | 8 | 5.0 | 25.2 | Φ1.0 |
ETD34-4 | Horizontal | 36.0 | 36.0 | 26.0 | 7 | 5.0 | 7 | 5.0 | 30.2 | Φ1.0 |
ETD34-5 | Horizontal | 41.0 | 41.0 | 30.0 | 15 | 2.5 | 15 | 2.5 | 30.0 | Φ1.0 |
ETD34-5 | Horizontal | 44.0 | 44.0 | 30.0 | 16 | 2.5 | 16 | 2.5 | 25.0 | Φ0.8 |
ETD34-6 | Horizontal | 41.0 | 41.0 | 33.0 | 7 | 5.0 | 7 | 5.0 | 25.0 | Φ0.8 |
ETD39 | Horizontal | 46.0 | 46.0 | 38.0 | 8 | 5.0 | 8 | 5.0 | 30.4 | Φ1.0 |
ETD44-1 | Vertical | 47.0 | 47.0 | 52.0 | 9 | 5.0 | 9 | 5.0 | 27.5 | Φ1.0 |
ETD44-2 | Horizontal | 50.0 | 50.0 | 40.5 | 9 | 5.0 | 9 | 5.0 | 36.5 | Φ1.0 |
ETD49-1 | Vertical | 55.0 | 55.0 | 58.5 | 9 | 5.0 | 9 | 5.0 | 27.5 | Φ1.0 |
ETD49-2 | Vertical | 56.0 | 56.0 | 58.5 | 10 | 5.0 | 10 | 5.0 | 30.5 | Φ1.0 |
ETD49-3 | Vertical | 56.5 | 56.5 | 58.5 | 11 | 5.0 | 11 | 5.0 | 27.5 | Φ1.0 |
ETD49-4 | Horizontal | 56.5 | 56.5 | 51.5 | 10 | 5.0 | 10 | 5.0 | 40.5 | Φ1.0 |
ETD49-5 | Horizontal | 58.5 | 58.5 | 50.0 | 11 | 5.0 | 11 | 5.0 | 40.0 | Φ1.0 |
ETD59-1 | Vertical | 75.0 | 75.0 | 73.0 | 12 | 5.1 | 12 | 5.1 | 35.6 | Φ1.0 |
ETD59-2 | Horizontal | 72.5 | 72.5 | 46.0 | 13 | 5.1 | 13 | 5.1 | 50.8 | Φ0.8 |
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