Single Secondary Winding Pulse Transformers TE Schaffner IT155 Designed for Isolation in Drive Circuits
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, ensuring negligible delays and the possibility of voltage scaling. Available with single or double secondary windings, these transformers offer rapid availability as 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] |
| IT 155 | 1:1 | 0.1 | 500 | 4 | 480 | 1 | 5 | 85 | 1.2 | 1.2 | 6 | 13 |
| IT 245 | 1:1 | 0.1 | 750 | 4 | 500 | 1.2 | 8 | 100 | 1.48 | 1.48 | 10 | 6 |
| IT 237 | 1:1 | 0.25 | 500 | 2.5 | 1100 | 1 | 25 | 35 | 1.9 | 2.2 | 50 | 14 |
| IT 239 | 1:1 | 0.25 | 1000 | 6 | 300 | 2.3 | 3 | 80 | 0.9 | 0.9 | 5 | 13 |
| IT 255 | 1:1 | 0.25 | 750 | 4 | 250 | 1.1 | 2.2 | 40 | 0.8 | 0.8 | 8 | 6 |
| IT 258 | 1:1 | 1 | 750 | 3.2 | 250 | 0.25 | 2.5 | 3 | 0.62 | 0.75 | 80 | 6 |
| IT 370 | 1:1 | 1 | 1000 | 5 | 4000 | 0.6 | 0.3 | 6 | 0.16 | 0.18 | 40 | 71 |
| IT 364** | 1:1 | 3 | 3000 | 8 | 5000 | 1.7 | 1.5 | 10 | 0.16 | 0.14 | 35 | 220 |
| IT 246 | 2:1 | 0.1 | 750 | 4 | 200 | 0.4 | 7 | 35 | 2.1 | 1.1 | 7 | 6 |
| IT 248 | 2:1 | 0.25 | 750 | 3.2 | 350 | 2.2 | 17 | 80 | 3.2 | 1.6 | 9 | 6 |
| IT 260 | 3:1 | 0.1 | 500 | 3.2 | 200 | 0.3 | 12 | 30 | 2 | 0.8 | 8 | 6 |
Key Technical Specifications:
Nominal operating voltage: Up to 3000 V
Operating frequency: 40 kHz max. / 500 kHz max. for data transmission
DC to 40000 Hz
Ignition currents: 0.1 to 3 A @ 40C
Rise time: 0.3 to 2.3 s
Test voltage: Up/50 Hz/2 s max. according to VDE 110b
Max. partial discharge voltage: 1.5 x Unom
Temperature range (operation and storage): -25C to +70C (25/70/21)
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
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