Pulse Transformers IT series with single secondary winding
The IT series pulse transformers provide galvanic isolation between drive and power circuits, offering voltage resistance up to 8 kV and ignition currents up to 3 A. They are designed for transformer-coupled gate drives, featuring negligible delays and voltage scaling capabilities. Available with single or double secondary windings for multiple gate drives, the IT product line ensures rapid availability of standard gate drive transformers with a wide selection of turns ratios, ignition currents, and voltages.
Product Attributes
- Brand: Schaffner
- Certifications: UL 94 V-0 listed materials
Technical Specifications
| Model | Turns Ratio | Ignition Current (Iign) [A] | Nominal Voltage (Unom) [V] | Test Voltage (Up) [kV] | Voltage Rise (V0t) [Vs] | Rise Time (tr) [s] | Primary Inductance (Lp) [mH] | Stray Inductance (Lstr) [H] | Resistance (Rp) [] | Resistance (Rs) [] | Capacitance (Ck) [pF] | Weight [g] | Connections |
| IT 155 | 1:1 | 0.1 | 500 | 4 | 480 | 1 | 5 | 85 | 1.2 | 1.2 | 6 | 13 | 02 |
| IT 245 | 1:1 | 0.1 | 750 | 4 | 500 | 1.2 | 8 | 100 | 1.48 | 1.48 | 10 | 6 | 02 |
| IT 237 | 1:1 | 0.25 | 500 | 2.5 | 1100 | 1 | 25 | 35 | 1.9 | 2.2 | 50 | 14 | 02 |
| IT 239 | 1:1 | 0.25 | 1000 | 6 | 300 | 2.3 | 3 | 80 | 0.9 | 0.9 | 5 | 13 | 02 |
| IT 255 | 1:1 | 0.25 | 750 | 4 | 250 | 1.1 | 2.2 | 40 | 0.8 | 0.8 | 8 | 6 | 02 |
| IT 258 | 1:1 | 1 | 750 | 3.2 | 250 | 0.25 | 2.5 | 3 | 0.62 | 0.75 | 80 | 6 | 02 |
| IT 370 | 1:1 | 1 | 1000 | 5 | 4000 | 0.6 | 0.3 | 6 | 0.16 | 0.18 | 40 | 71 | 02 |
| IT 364** | 1:1 | 3 | 3000 | 8 | 5000 | 1.7 | 1.5 | 10 | 0.16 | 0.14 | 35 | 220 | 05 |
| IT 246 | 2:1 | 0.1 | 750 | 4 | 200 | 0.4 | 7 | 35 | 2.1 | 1.1 | 7 | 6 | 02 |
| IT 248 | 2:1 | 0.25 | 750 | 3.2 | 350 | 2.2 | 17 | 80 | 3.2 | 1.6 | 9 | 6 | 02 |
| IT 260 | 3:1 | 0.1 | 500 | 3.2 | 200 | 0.3 | 12 | 30 | 2 | 0.8 | 8 | 6 | 02 |
Explanations:
* Lp tolerance: +50%; -30%
** IT 364 not suitable for PCB-mounting.
tr: rise time at given load resistor R and 70% of the output pulse height.
Lp: primary inductance measured at 1 kHz (secondary coil open).
Lstr: stray inductance measured at the secondary side, short circuit at the primary side. If there are several secondary coils, only one at a time is connected (measuring frequency 10 kHz).
The ignition current is a set peak value where the voltage drop over the coil resistance is still insignificant (mostly below 1 V).
Features and Benefits
- Galvanic separation
- Voltage resistance up to 8 kV
- Allows high potential difference
- Voltage scaling
- Optional grounded shields
- Vacuum potting
- Very low partial discharge effects
- PCB through hole mounting or faston types
- Custom-specific versions on request
Typical Applications
- Gate drive circuit
- Power supplies
- Power converters
- Frequency converters
- Switching applications
- DC/DC converters
- Line coupling transformers in high-speed data transmission
2411272239_TE---Schaffner-IT255_C6968831.pdf
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