Value
A switching transformer is a type of transformer used in switching power supply circuits and operates at high frequencies.
Compared to conventional commercial frequency transformers, it is characterized by its small size, light weight, and high efficiency.
主な特徴
High-frequency operation
Because they are used in switching power supplies, they can operate at high frequencies ranging from several kHz to several hundred kHz (and in some cases, MHz).
Smaller size and lighter weight are possible
By using a small ferrite core with a high operating frequency, it is possible to achieve a smaller size and lighter weight compared to commercial frequency transformers.
It has an insulation function
Because it insulates the primary and secondary sides, it offers high safety and contributes to preventing electric shock and isolating noise in power supply circuits.
High power conversion efficiency
By using appropriate core materials and winding designs, losses are reduced, and power conversion efficiency of over 80% is achievable.
Multiple outputs are possible
By providing multiple secondary windings in a single transformer, multiple voltages can be generated.
Product specifications & line up
| Type | Appearance | WxHxD (mm) | Bobbin terminal specifications P1(mm) | Bobbin terminal specifications P2(mm) | Bobbin terminal specifications Terminal | d(mm) | Max at 100kHz （VA) | Spec. Sheet |
| EE type |  | 9.0x9.0x8.5 ～36.0x32.5x30.0 | 6.0～28.0 | 2.5～5.0 | 3x3 ～ 7x7 | Φ0.5 ～Φ0.8 | 3 ～ 206 |  |
| ER type |  | 27.5x22.5x21.0 ～57.0x54.5x42.0 | 15.0～41.0 | 3.8～5.0 | 6x6 ～ 10x10 | Φ0.8 ～Φ1.0 | 68 ～ 1000 | |
| PQ type |  | 25.0x22.0x25.5 ～53.0ｘ53.5ｘ54.0 | 20.2～46.0 | 3.8～7.5 | 6x4 ～ 6x6 | Φ0.6 ～Φ1.2 | 39 ～ 780 | |
| EPC type |  | 13.0x7.5x13.0 ～32.0x17.5x38.0 | 2.5～5.0 | 2.5～9.0 | 5x2 ～ 6x6 | Φ0.5 ～Φ1.0 | 2 ～80 | |
| SMD EP type |  | 11.0x9.5x8.6 ～14.0x12.7x13.0 | 9.4～15 | 2.5 | 4x4 ～ 5x5 | 0.6 ～0.7 | 3 ～ 13 | |
| SMD EFD type |  | 17.5x16.0x8.5 ～27.0ｘ29.0x13.7 | 16.9～29.7 | 2.5～4.0 | 5x5 ～ 6x6 | 0.7 ～1.1 | 13 ～ 45 | |