DATASHEET Pulse Transformers IT series with double secondary winding Pulse Transformer with Double Secondary Winding Galvanic separation of drive and power circuit Approvals Voltage resistance up to 4 kV Ignition current up to 1 A Turns ratio up to 3:1:1 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 Technical specifications Typical applications Nominal operating voltage Up to 500 V Operating frequency 40 kHz max. Gate drive circuit 500 kHz max. for data transmission Power supplies DC to 40000 Hz Power converters Ignition currents 0.025 to 1 A @ 40°C Frequency converters Rise time 0.4 to 4 µs Switching applications Test voltage Up/50 Hz/2 s max. according to VDE 110b Max. partial discharge voltage 1.5 x Unom DC/DC converters Line coupling transformers in high-speed data Temperature range (operation and storage) -25°C to +70°C (25/70/21) transmission Flammability corresponding to UL 94 V-0 listed materials

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 143 1:1:1 0.025 500 4 800 0.6 15 200 3 3 10 02 14 IT 242 1:1:1 0.1 500 3.2 250 0.9 2.5 75 0.75 0.75 7 02 6 IT 243 1:1:1 0.1 500 3.2 250 1 2.5 85 0.8 0.8 7 02 6 IT 213 1:1:1 0.25 380 2.5 450 0.4 6.5 20 1.4 1.4 40 02 9 IT 233 1:1:1 0.25 500 4 300 1.3 3 45 0.8 0.8 7 02 13 IT 253 1:1:1 0.25 500 3.2 160 1.3 1.1 45 0.55 0.55 6 02 6 IT 312 1:1:1 0.25 380 2.5 1200 1 21 35 2.4 2.7 30 02 24 IT 313 1:1:1 1 380 2.5 450 0.6 3 6 0.33 0.4 27 02 24 IT 249 2:1:1 0.25 500 3.2 330 4 17 140 3.1 1.5 9 02 6 IT 244 3:1:1 0.1 500 3.2 200 0.7 15 70 2.8 0.9 9 02 6 IT 234 3:1:1 0.25 500 4 280 1 17 40 2 0.7 9 02 13 IT 314 3:1:1 1 380 2.5 500 1 35 20 1.6 0.7 30 02 25 * Tolerance: +50%; -30% Explanations: – trrise time at given load resistor R and 70% of the output pulse height. – Lpprimary inductance measured at 1 kHz (secondary coile open). – Lstrstray 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). Mechanical data IT 213 IT 243, IT 244, IT 249, IT 253 IT 242 IT 143, IT 154, IT 233, IT 234

3 EMC/EMI Products Schaffner Group Datasheets 11 Oct 2018 IT 312, IT 313, IT 314 Dimensions IT 213 IT 243 IT 244 IT 249 IT 253 IT 242 IT 143 IT 154 IT 233 IT 234 IT 312 IT 313 IT 314 Tol. A Ø19 17.6 17.6 17.6 17.6 17.6 27* 27* 27* 27* 25.5* 25.5* 25.5* ±0.1 B 16.7 16.7 16.7 16.7 16.7 22.5* 22.5* 22.5* 22.5* 25.5* 25.5* 25.5* ±0.1 C 20 11.3 11.3 11.3 11.3 11.3 13.7 13.7 13.7 13.7 25* 25* 25* ±0.1 D 5 5 5 5 5 5 5 5 5 5 5 5 5 +1/-0 E 0.45 0.42 0.42 0.42 0.42 0.42 0.45 0.45 0.45 0.45 0.5 0.5 0.5 F 1 0.4 0.4 0.4 0.4 0.4 0.7 0.7 0.7 0.7 0.5 0.5 0.5 G 10 15.3 15.3 15.3 15.3 15.3 20 20 20 20 15 15 15 H 5 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5 ±0.2 I 2.1 2.1 2.1 2.1 2.1 3.75 3.75 3.75 3.75 5.25 5.25 5.25 ±0.2 K 5 5 5 5 5 5 5 5 ±0.2 L 2 2 2 2 2 2.5 2.5 2.5 2.5 3 3 3 * Tolerance is ±0.2 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 filter connectors.

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