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Specifications
Turns Ratio:
2:1:1
Width:
16.7mm
Length:
17.6mm
Operating Temperature:
-25℃~+70℃
Mfr. Part #:
IT249
Package:
Through Hole,17.6x16.7mm
Key Attributes
Model Number:
IT249
Product Description
Pulse Transformers IT series with double secondary winding
The IT series pulse transformers offer galvanic isolation between drive and power circuits, providing voltage resistance up to 4 kV and ignition currents up to 1 A. With a turns ratio up to 3:1:1, these transformers are ideal for various switching applications, power supplies, and high-speed data transmission. Key advantages include high potential difference voltage scaling, vacuum potting for very low partial discharge effects, and PCB through-hole mounting. Custom-specific versions are available upon request.
Product Attributes
- Brand: Schaffner
- Certifications: UL 94 V-0 listed materials
Technical Specifications
| Model | Turns ratio | Ignition Current [A] | Nominal Operating Voltage [V] | Test Voltage [kV] | Voltage Rise Time [Vs] | Rise Time [s] | Primary Inductance [mH] | Stray Inductance [H] | Resistance [] | Capacitance [pF] | Weight [g] |
| IT 143 | 1:1:1 | 0.025 | 500 | 4 | 800 | 0.6 | 15 | 200 | 3 | 10 | 2 |
| IT 242 | 1:1:1 | 0.1 | 500 | 3.2 | 250 | 0.9 | 2.5 | 75 | 0.75 | 7 | 2 |
| IT 243 | 1:1:1 | 0.1 | 500 | 3.2 | 250 | 1 | 2.5 | 85 | 0.8 | 7 | 2 |
| IT 213 | 1:1:1 | 0.25 | 380 | 2.5 | 450 | 0.4 | 6.5 | 20 | 1.4 | 40 | 2 |
| IT 233 | 1:1:1 | 0.25 | 500 | 4 | 300 | 1.3 | 3 | 45 | 0.8 | 7 | 2 |
| IT 253 | 1:1:1 | 0.25 | 500 | 3.2 | 160 | 1.3 | 1.1 | 45 | 0.55 | 6 | 2 |
| IT 312 | 1:1:1 | 0.25 | 380 | 2.5 | 1200 | 1 | 21 | 35 | 2.4 | 30 | 2 |
| IT 313 | 1:1:1 | 1 | 380 | 2.5 | 450 | 0.6 | 3 | 6 | 0.33 | 27 | 2 |
| IT 249 | 2:1:1 | 0.25 | 500 | 3.2 | 330 | 4 | 17 | 140 | 3.1 | 9 | 2 |
| IT 244 | 3:1:1 | 0.1 | 500 | 3.2 | 200 | 0.7 | 15 | 70 | 2.8 | 9 | 2 |
| IT 234 | 3:1:1 | 0.25 | 500 | 4 | 280 | 1 | 17 | 40 | 2 | 9 | 2 |
| IT 314 | 3:1:1 | 1 | 380 | 2.5 | 500 | 1 | 35 | 20 | 1.6 | 30 | 2 |
Key Features
- Galvanic separation with secondary winding
- Voltage resistance up to 4 kV
- Allows high potential difference voltage scaling
- Vacuum potting
- Very low partial discharge effects
- PCB through hole mounting
- 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
General Specifications
| Parameter | Value |
| Nominal operating voltage | Up to 500 V |
| Operating frequency | 40 kHz max. / 500 kHz max. for data transmission |
| DC to | 40000 Hz |
| Temperature range (operation and storage) | -25C to +70C (25/70/21) |
2411272239_TE---Schaffner-IT249_C6884226.pdf
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