IT314

## **Pulse Transformer with Double Secondary Winding** 

Galvanic separation of drive and power circuit 

Approvals & Compliances pe 

~~J~~ VoltaIgnition current uge resistance up to 1 Ap to 4 kV Turns ratio up to 3:1:1 

## **Features and Benefits** 

Galvanic separation with secondary winding Voltage resistance up to 4 kV ~~Sn~~ Allows high potential difference voltage scaling Vacuum potting ~~oS~~ Very low partial discharge effects PCB through hole mounting Custom-specific versions on request 

## **Typical Applications** 

## **Technical Specifications** 

|**Nominal operating voltage**|Up to 500 V|
|---|---|
|**Operating frequency**|40 kHz max.|
||500 kHz max. for data transmission|
||DC to 40000 Hz|
|**Ignition currents**|0.025 to 1 A @ 40°C|
|**Rise time**|0.4 to 4 µs|
|**Test voltage**|Up/50 Hz/2 s max. according to VDE 110b|
|**Max. partial discharge voltage**|1.5 x Unom|
|**Temperature range (operation and storage)**|-25°C to +70°C (25/70/21)|
|**Flammability corresponding to**|UL 94 V-0 listed materials|



Gate drive circuit Power supplies Power converters Frequency converters Switching applications DC/DC converters Line coupling transformers in high-speed data transmission 

2 Pulse Transformers 

**Schaffner Group DATA** SHEET 15. Jun 2022 

## **Pulse Transformer Selection Table** 

|**Pulse transformer**|**Turns ratio**|**Ignition**|**Voltage**|**Voltage**|**Voltage**|**Rise**|**Inductance ***|**Inductance ***|**Resistance**|**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: 

- 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). 

## **Mechanical Data** 

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IT 213 IT 243, IT 244, IT 249, IT 253<br>tL a A<br>Hyry |[> 4 7\ | G A S , E || | : H emi 6 5 L i<br>\ 5 6, /y ! , Oo m—o 6% J o a 3 8<br>>. L/ \ 6° 5 /4 Ky<br>T= ! | — I i i<br>HH F j__& |<br>ee<br>¢ _ i<br>IT 242 IT 143, IT 154, IT 233, IT 234<br>**----- End of picture text -----**<br>


3 Pulse Transformers 

**Schaffner Group DATA** SHEET 15. Jun 2022 

## 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 visit www.schaffner.com to find more details on filter connectors. 

4 Pulse Transformers 

**Schaffner Group DATA** SHEET 15. Jun 2022 

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