Product Overview
The Schaffner 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. Designed for transformer-coupled gate drives, they feature negligible delays and voltage scaling capabilities. Available with single or double secondary windings, these transformers ensure rapid availability of standard gate drive solutions with a wide selection of turns ratios, ignition currents, and voltages.
Product Attributes
- Brand: Schaffner
- Series: IT
- Certifications: UL 94 V-0 listed materials
- Mounting: PCB through hole mounting or faston types
- Customization: Custom-specific versions on request
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] | Primary Resistance (Rp) [] | Secondary 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 |
* Tolerance: +50%; -30% for Inductance (Lp).
** Not suitable for PCB-mounting.
Explanations:
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 the 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).
2411272239_TE---Schaffner-IT260_C6968832.pdf
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