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Specifications
Turns Ratio:
1:1:1
Width:
16.7mm
Length:
17.6mm
Operating Temperature:
-25℃~+70℃
Mfr. Part #:
IT243
Package:
Through Hole,17.6x16.7mm
Key Attributes
Model Number:
IT243
Product Description
Pulse Transformers IT Series with Double Secondary Winding
The Schaffner IT series pulse transformers provide galvanic isolation between drive and power circuits. They offer high voltage resistance up to 4 kV and ignition currents up to 1 A, with turns ratios up to 3:1:1. These transformers are designed for applications requiring robust isolation and precise pulse shaping, featuring vacuum potting for very low partial discharge effects and PCB through-hole mounting. Custom-specific versions are available upon request.
Features and Benefits
- 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 circuits
- Power supplies
- Power converters
- Frequency converters
- Switching applications
- DC/DC converters
- Line coupling transformers in high-speed data transmission
Technical Specifications
| Model | Turns ratio | Ignition current Iign [A] | Nominal operating 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 143 | 1:1:1 | 0.025 | 500 | 4 | 800 | 0.6 | 15 | 200 | 3 | 3 | 10 | 2 |
| IT 242 | 1:1:1 | 0.1 | 500 | 3.2 | 250 | 0.9 | 2.5 | 75 | 0.75 | 0.75 | 7 | 6 |
| IT 243 | 1:1:1 | 0.1 | 500 | 3.2 | 250 | 1 | 2.5 | 85 | 0.8 | 0.8 | 7 | 6 |
| IT 213 | 1:1:1 | 0.25 | 380 | 2.5 | 450 | 0.4 | 6.5 | 20 | 1.4 | 1.4 | 40 | 9 |
| IT 233 | 1:1:1 | 0.25 | 500 | 4 | 300 | 1.3 | 3 | 45 | 0.8 | 0.8 | 7 | 13 |
| IT 253 | 1:1:1 | 0.25 | 500 | 3.2 | 160 | 1.3 | 1.1 | 45 | 0.55 | 0.55 | 6 | 6 |
| IT 312 | 1:1:1 | 0.25 | 380 | 2.5 | 1200 | 1 | 21 | 35 | 2.4 | 2.7 | 30 | 24 |
| IT 313 | 1:1:1 | 1 | 380 | 2.5 | 450 | 0.6 | 3 | 6 | 0.33 | 0.4 | 27 | 24 |
| IT 249 | 2:1:1 | 0.25 | 500 | 3.2 | 330 | 4 | 17 | 140 | 3.1 | 1.5 | 9 | 6 |
| IT 244 | 3:1:1 | 0.1 | 500 | 3.2 | 200 | 0.7 | 15 | 70 | 2.8 | 0.9 | 9 | 6 |
| IT 234 | 3:1:1 | 0.25 | 500 | 4 | 280 | 1 | 17 | 40 | 2 | 0.7 | 9 | 13 |
| IT 314 | 3:1:1 | 1 | 380 | 2.5 | 500 | 1 | 35 | 20 | 1.6 | 0.7 | 30 | 25 |
Mechanical Data
| Model | A [mm] | B [mm] | C [mm] | D [mm] | E [mm] | F [mm] | G [mm] | H [mm] | I [mm] | K [mm] | L [mm] |
| IT 213 | 17.6 | 16.7 | 20 | 5 | 0.45 | 1 | 10 | 5 | 2.1 | 5 | 2 |
| IT 243, IT 244, IT 249, IT 253 | 17.6 | 16.7 | 11.3 | 5 | 0.42 | 0.4 | 15.3 | 7.5 | 2.1 | 5 | 2 |
| IT 242 | 27* | 22.5* | 13.7 | 5 | 0.45 | 0.7 | 20 | 7.5 | 3.75 | 5 | 2.5 |
| IT 143, IT 154, IT 233, IT 234 | 27* | 22.5* | 13.7 | 5 | 0.45 | 0.7 | 20 | 7.5 | 3.75 | 5 | 2.5 |
| IT 312, IT 313, IT 314 | 25.5* | 25.5* | 25* | 5 | 0.5 | 0.5 | 15 | 7.5 | 5.25 | 5 | 3 |
* Tolerance is 0.2. All dimensions in mm; 1 inch = 25.4 mm. Tolerances according: ISO 2768-m/EN 22768-m.
2411272239_TE---Schaffner-IT243_C5772910.pdf
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