DATASHEET Pulse Transformers IT series with single secondary winding Pulse Transformer with Single Secondary Winding Galvanic separation of drive and power circuit Approvals Voltage resistance up to 8 kV Ignition current up to 3 A Turns ratio up to 3:1 IT pulse transformers are designed to offer you galvanic isolation for transformer coupled gate drives. The IT series provides negligible delays and the possibility of voltage scaling. They are available with single or double secondary winding for multiple gate drives. Choosing the IT product line brings you the rapid availability of a standard gate drive transformer. A wide selection on turns ratio, ignition current and voltages are designed to offer you the desired standard product. Technical specifications Features and benefits Nominal operating voltage Up to 3000 V Galvanic separation Operating frequency 40 kHz max. 500 kHz max. for data transmission Voltage resistance up to 8 kV DC to 40000 Hz Allows high potential difference voltage scaling Ignition currents 0.1 to 3 A @ 40°C Optional grounded shields Rise time 0.3 to 2.3 µs Vacuum potting Test voltage Up/50 Hz/2 s max. according to VDE 110b Very low partial discharge effects Max. partial discharge voltage 1.5 x Unom PCB through hole mounting or faston types Temperature range (operation and storage) -25°C to +70°C (25/70/21) Custom-specific versions on request Flammability corresponding to UL 94 V-0 listed materials Typical applications Gate drive circuit Power supplies Power converters Frequency converters Switching applications DC/DC converters Line coupling transformers in high-speed data transmission

2 EMC/EMI Products Schaffner Group Datasheets 11 Oct 2018 Pulse transformer selection table Pulse transformer Turns ratio Ignition Voltage Voltage Rise Inductance* Resistance Coupling Input/ Output Weight current time area time capacitance connections Iign Unom Up V0t tr Lp Lstr Rp Rs Ck [A] [V] [kV] [Vμs] [μs] [mH] [μH] [Ω] [Ω] [pF] [g] IT 155 1:1 0.1 500 4 480 1 5 85 1.2 1.2 6 02 13 IT 245 1:1 0.1 750 4 500 1.2 8 100 1.48 1.48 10 02 6 IT 237 1:1 0.25 500 2.5 1100 1 25 35 1.9 2.2 50 02 14 IT 239 1:1 0.25 1000 6 300 2.3 3 80 0.9 0.9 5 02 13 IT 255 1:1 0.25 750 4 250 1.1 2.2 40 0.8 0.8 8 02 6 IT 258 1:1 1 750 3.2 250 0.25 2.5 3 0.62 0.75 80 02 6 IT 370 1:1 1 1000 5 4000 0.6 0.3 6 0.16 0.18 40 02 71 IT 364** 1:1 3 3000 8 5000 1.7 1.5 10 0.16 0.14 35 05 220 IT 246 2:1 0.1 750 4 200 0.4 7 35 2.1 1.1 7 02 6 IT 248 2:1 0.25 750 3.2 350 2.2 17 80 3.2 1.6 9 02 6 IT 260 3:1 0.1 500 3.2 200 0.3 12 30 2 0.8 8 02 6 * Tolerance: +50%; -30% ** 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 coile 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).

3 EMC/EMI Products Schaffner Group Datasheets 11 Oct 2018 Mechanical data IT 245, IT 246, IT 248, IT 255, IT 258, IT 260 IT 239 IT 155, IT 237 IT 364 IT 370 Dimensions IT 245 IT 246 IT 248 IT 255 IT 258 IT 260 IT 239 IT 155 IT 237 IT 364 IT 370 Tol. A 17.6* 17.6* 17.6* 17.6* 17.6* 17.6* 27 27 27 50 27 ±0.2 B 16.7* 16.7* 16.7* 16.7* 16.7* 16.7* 22.5 22.5 22.5 50 32.2 ±0.2 C 11.3* 11.3* 11.3* 11.3* 11.3* 11.3* 13.7 13.7 13.7 60 23.7 ±0.2 D 5 5 5 5 5 5 5 5 5 10* 5.5 +1/-0 E 0.42 0.42 0.42 0.42 0.42 0.42 0.45 0.45 0.45 Ø0.8 F 0.4 0.4 0.4 0.4 0.4 0.4 0.7 0.7 0.7 3.5 G 15.3 15.3 15.3 15.3 15.3 15.3 20 20 20 42 20 ±0.2 H 12.5 12.5 12.5 12.5 12.5 12.5 15 7.5 7.5 42 10 ±0.2 I 3.5 3.5 ±0.2 L 2 2 2 2 2 2 2.5 2.5 2.5 M 25 ±0.2 N Ø4.2 * Tolerance is ±0.1 All dimensions in mm; 1 inch = 25.4 mm Tolerances according: ISO 2768-m/EN 22768-m Please visitwww.schaffner.comto find more details on connectors.

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